Rohde and Schwarz CMU200v10 Service Manual

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Test and Measurement Division

Service Manual Instrument

Universal Radio Communication Tester

CMU200/CMU300

Printed in the Federal Republic of Germany

1100.0008.02/1100.0008.03

1100.4903.82-04- 1

CMU Tabbed Divider Overview

Tabbed Divider Overview

Spare Parts Express Service List of R&S Representatives Safety Instructions

Contents

Contents of Manuals for Universal Radio Communication Tester CMU

Tabbed Divider

1 Chapter 1: Performance Test

Index

2 Chapter 2: Adjustment

3 Chapter 3: Repair

4 Chapter 4: Software Update /Installation of Options

5 Chapter 5: Documents

1100.4903.82 RE E-3

Spare Parts Express Service

Phone: +49 89 4129 - 2465

Fax: +49 89 41

29 - 3306

E-mail: werner.breidling@RSD.rsd.de

In case of urgent spare parts requirements for this Rohde & Schwarz unit, please contact our spare parts express service.

Outside business hours, please leave us a message or send a fax or e-mail. We shall contact you promptly.

1007.9016

CMU Contents

1 Performance Test................................................................................................1.1

General.............................................................................................................................................. 1.1

A) Calibration by an R&S Representative with an ACS Calibration System........ 1.1

B) Sending the Instrument to the Factory (Memmingen, Germany)..................... 1.1

Necessary Documents ............................................................................................................ 1.1

Measuring Instruments and Auxiliary Equipment........................................................................1.2

Test Setups ............................................................................................................................. 1.3

Reference Frequencies.................................................................................................1.3

TX Level Measurements ............................................................................................... 1.3

General TX measurements...........................................................................................1.4

RX Level measurements...............................................................................................1.4

General RX Measurements........................................................................................... 1.5

RX Demodulation Measurements................................................................................. 1.5

Tolerance Analysis .......................................................................................................................... 1.6

Manual Test Procedure ...................................................................................................................1.7

Selftest.....................................................................................................................................1.7

Interface Test...........................................................................................................................1.8

IEC-bus Interface .......................................................................................................... 1.8

RS–232 Interface .......................................................................................................... 1.8

Reference Frequencies ...........................................................................................................1.8

REF IN ......................................................................................................................... 1.8

REF OUT 1.................................................................................................................... 1.9

REF OUT 2.................................................................................................................... 1.9

TX Frequency Accuracy ........................................................................................................1.10

TX Frequency Settling Time.................................................................................................. 1.10

TX Level Error ....................................................................................................................... 1.10

VSWR....................................................................................................................................1.10

TX Level Settling Time ..........................................................................................................1.11

TX Harmonics........................................................................................................................ 1.11

TX Non Harmonics ................................................................................................................1.11

TX In-Band Spurious Signals ................................................................................................ 1.11

TX Fixed Spurious Signals ....................................................................................................1.12

TX SSB Phase Noise ............................................................................................................ 1.12

TX Residual FM..................................................................................................................... 1.12

TX Residual AM.....................................................................................................................1.12

TX Carrier/Sideband Suppression, Max. Distortion...............................................................1.13

RX Power Meter (Frequency-Selective)................................................................................ 1.13

1100.4903.82 3 E-4

Contents CMU

RX Power Meter (Wideband).................................................................................................1.13

RX Harmonics ....................................................................................................................... 1.13

RX Spurious Response / Image Rejection............................................................................1.14

RX SSB Phase Noise............................................................................................................ 1.14

RX Residual FM/AM.............................................................................................................. 1.15

RX Dynamic/ Average Noise Level........................................................................................ 1.15

Options for CMU200..............................................................................................................1.16

TX GSM Modulation....................................................................................................1.16

RX GSM Dem odulation.......................................................................................1.16

Function Test with Mobile Stations (CMU200) ......................................................................1.17

GSM mobile test.......................................................................................................... 1.17

CDMA mobile test ....................................................................................................... 1.17

IS136-mobile test ........................................................................................................ 1.17

AMPS-mobile test........................................................................................................1.17

Test Report.....................................................................................................................................1.18

2 Adjustment........................................................................................................... 2.1

Manual Adjustment..........................................................................................................................2.1

Measuring Instruments and Auxiliary Equipment.................................................................... 2.1

Preparing the Instrument......................................................................................................... 2.2

Adjusting the + 5 VDC Reference Voltage .............................................................................. 2.2

Adjusting the 10 MHz Reference Frequency........................................................................... 2.3

TCXO 2.3

OCXO REFERENCE OSC. CMU-B11..........................................................................2.3

OCXO REFERENCE OSC. CMU-B12..........................................................................2.3

Automatic Adjustment of Module Data.......................................................................................... 2.4

Preparing the adjustment ........................................................................................................2.4

Performing the adjustment ......................................................................................................2.4

3 Repair...................................................................................................................3.1

Instrument Design and Function Description............................................................................... 3.1

Block diagram..........................................................................................................................3.2

Instrument Frame ....................................................................................................................3.3

Rear of Instrument Frame ....................................................................................................... 3.3

Front of Instrument Frame.......................................................................................................3.3

Cooling the Instrument ............................................................................................................ 3.4

FRONT MODULE....................................................................................................................3.5

POWER SUPPLY....................................................................................................................3.6

MOTHERBOARD ....................................................................................................................3.7

REFERENCE BOARD.............................................................................................................3.8

1100.4903.82 4 E-4

CMU Contents

Option OCXO REFERENCE OSC. CMU-B11 or B12.............................................................3.9

RF FRONTEND....................................................................................................................... 3.9

RXTX BOARD1 .....................................................................................................................3.10

DIGITAL BOARD...................................................................................................................3.12

Option UNIVERSAL SIGNALLING UNIT CMU-B21.............................................................. 3.13

Option AUDIO-GEN. + ANA. CMU-B41 ................................................................................3.15

Option CDMA (IS95) Signalling Unit CMU-B81.....................................................................3.16

MODULE Replacement.................................................................................................................. 3.17

Replacing the FRONT MODULE........................................................................................... 3.17

Opening the instrument and removing the FRONT MODULE .......................3.17

Installing the new FRONT MODULE and completing the instrument............. 3.18

Putting into operation...................................................................................... 3.18

Replacing the FRONT MODULE CONTROLLER in the FRONT MODULE .........................3.19

Opening the instrument and removing the FRONT MODULE .......................3.19

Removing the FRONT MODULE CONTROLLER from the FRONT MODULE3.20

Installing the new FRONT MODULE CONTROLLER ....................................3.20

Installing the option again and completing the instruments............................3.20

Putting into operation...................................................................................... 3.21

Replacing the Lithium Battery in the FRONT MODULE........................................................ 3.22

Opening the instrument and removing the FRONT MODULE .......................3.22

Removing the lithium battery..........................................................................3.23

Installing the new battery and completing the instrument...............................3.24

Putting into operation...................................................................................... 3.24

Replacing the Hard Disk in the FRONT MODULE................................................................3.25

Opening the instrument and removing the FRONT MODULE .......................3.25

Removing the hard disk from the FRONT MODULE ..................................... 3.26

Installing the new hard disk ............................................................................3.26

Putting into operation...................................................................................... 3.27

Replacing the Memory Modules in the FRONT MODULE .................................................... 3.28

Opening the instrument and removing the FRONT MODULE .......................3.28

Making the memory modules accessible .......................................................3.29

Removing the memory module ......................................................................3.29

Installing the new memory module and completing the instrument................3.29

Putting into operation...................................................................................... 3.29

Replacing the LCD and/or DC/AC Converter in the FRONT MODULE................................. 3.30

Opening the instrument and removing the FRONT MODULE .......................3.30

Making the LCD accessible............................................................................3.31

Removing the LCD and/or DC/AC Converter.................................................3.31

Installing the new LCD and/or DC/AC converter and completing the instrument3.31

Putting into operation...................................................................................... 3.31

Replacing the Keyboard Membrane and/or Mat on the FRONT MODULE........................... 3.32

Opening the instrument and removing the FRONT MODULE .......................3.32

Removing the membrane............................................................................... 3.33

Installing the new membrane and completing the instrument ........................3.33

Putting into operation...................................................................................... 3.33

Replacing the Labeling Panel on the FRONT MODULE....................................................... 3.34

Removing the old labeling panel..................................................................... 3.34

Installing the new labeling panel and completing the instrument ...................3.34

Putting into operation...................................................................................... 3.34

Replacing the Options FLOPPY DISK DRIVE CMU-B61 or PCMCIA INTERFACE .............3.35

1100.4903.82 5 E-4

Contents CMU

Opening the instrument and removing the FRONT MODULE .......................3.35

Replacing the option....................................................................................... 3.36

Completing the instrument and putting into operation.................................... 3.36

Replacing the RF FRONTEND.............................................................................................. 3.37

Opening the instrument and removing the RF FRONTEND ..........................3.37

Installing the new RF FRONTEND MODULE and completing the instrument3.37

Automatic module data adjustment................................................................3.37

Replacing the REFERENCE BOARD....................................................................................3.38

Opening the instrument and removing the REFERENCE BOARD ................ 3.38

Installing the new REFERENCE BOARD and completing the instrument......3.38

Automatic module data adjustment................................................................3.38

Replacing the RXTX BOARD1 ..............................................................................................3.39

Opening the instrument and removing the RXTX BOARD1........................... 3.39

Installing the new RXTX BOARD1 and completing the instrument................ 3.39

Automatic module data adjustment................................................................3.39

Replacing the TR-CORRECTION MODULE in the RXTX BOARD1..................................... 3.40

Opening the instrument and removing the TR-CORRECTION MODULE .....3.40

Installing the new TR-CORRECTION BOARD and completing the instr. ...... 3.40

Automatic module data adjustment................................................................3.40

Replacing the DIGITAL BOARD............................................................................................ 3.41

Opening the instrument and removing the DIGITAL BOARD ........................ 3.41

Installing the new DIGITAL BOARD and completing the instrument..............3.41

Automatic module data adjustment................................................................3.41

Replacing the MODULES: ADC MODULE1, DDC MODULE1, TXDSP MODULE1, AUC

MODULE1 in the DIGITAL BOARD.......................................................................................3.42

Opening the instrument and removing the modules....................................... 3.42

Installing the new sandwich module and completing the instrument..............3.42

Automatic module data adjustment................................................................3.43

Replacing the Option OCXO REFERENCE OSC. CMU-B11 or CMU-B12...........................3.44

Opening the instrument and removing the OPTION OCXO REF. OSC......... 3.44

Installing the new OPTION OCXO REFERENCE OSC. and completing the

instrument..................................................................................... 3.44

Manual OCXO adjustment .............................................................................3.44

Replacing the Option UNIVERSAL SIGNALLING UNIT CMU-B21....................................... 3.45

Opening the instrument and removing the OPTION UNIV. SIGN. UNIT .......3.45

Installing the new OPTION UNIV. SIGN. UNIT and completing the instr....... 3.45

Automatic module data adjustment................................................................3.45

Replacing the MODULES: DSP MODULE0/1, IQOUT MODULE, OPTION SPEECH CODEC

CMU-B52 (INCLUDES DSP MODULE3) in the UNIV. SIGN. UNIT...................................... 3.46

Opening the instrument and removing the modules....................................... 3.46

Installing the new sandwich module and completing the instrument..............3.46

Automatic module data adjustment................................................................3.47

Replacing the Option AUDIO-GEN. + ANA. CMU-B41 ......................................................... 3.48

Opening the instrument and removing the Option AUDIO-GEN. + ANA........ 3.48

Installing the new Option AUDIO-GEN. + ANA. and completing the instr......3.48

Automatic module data adjustment................................................................3.48

Replacing the POWER SUPPLY...........................................................................................3.49

Removing the POWER SUPPLY ...................................................................3.49

Installing the new POWER SUPPLY.............................................................. 3.49

Replacing the Instrument Fan ............................................................................................... 3.50

Opening the instrument and removing the fan ............................................... 3.50

Installing the new fan and completing the instrument.....................................3.50

1100.4903.82 6 E-4

CMU Tables

Replacing the MOTHERBOARD ...........................................................................................3.51

MOTHERBOARD1 (big MOTHERBOARD)................................................................ 3.51

Opening the instrument and removing MOTHERBOARD1............................ 3.51

Installing the new MOTHERBOARD1 and completing the instrument........... 3.51

MOTHERBOARD2 (small MOTHERBOARD)............................................................. 3.52

Opening the instrument and removing MOTHERBOARD2............................ 3.52

Installing the new MOTHERBOARD2 and completing the instrument........... 3.52

FRONTPANEL BOARD (at the front of the instrument frame) ...................................3.52

Opening the instrument and removing the FRONTPANEL BOARD ..............3.52

Installing the new FRONTPANEL BOARD and completing the instrument ... 3.52 REARPANEL BOARD1 (Interface board for Standard Connectors at the Rear of the

Instrument Frame)....................................................................................................... 3.53

Opening the instrument and removing the REARPANEL BOARD1............... 3.53

Installing the new REARPANEL BOARD1 and completing the instrument.... 3.53

REARPANEL BOARD2 (Interface Board for Further Connectors at the Rear of the

Instrument Frame)....................................................................................................... 3.53

Opening the Instrument and removing the REARPANEL BOARD2 .............. 3.53

Installing the new REARPANEL BOARD2 and completing the instrument.... 3.53

Troubleshooting ............................................................................................................................ 3.54

Troubleshooting using the LEDs (H1 to H8) on the MOTHERBOARD .................................3.55

Troubleshooting using the SELFTEST Menu for Modules.................................................... 3.57

Troubleshooting using the INFO Menu for Modules..............................................................3.58

Troubleshooting using the ERROR messages on the LC display......................................... 3.60

More troubleshooting.............................................................................................................3.61

General errors on the transmitter side of the CMU ............................................................... 3.61

General errors on the receiver side of the CMU....................................................................3.62

4 Software Update/Installing Options...................................................................4.1

New Installation of the CMU Software........................................................................................... 4.1

Software Update via PCMCIA INTERFACE............................................................................ 4.1

Software Update via FLOPPY DISK DRIVE............................................................................4.1

Performing a Software Update ................................................................................................4.2

Reinstalling the Old Software......................................................................................................... 4.3

Loading Software as long as there is no VersionManager in the CMU...................................... 4.3

Installing the Options...................................................................................................................... 4.4

5 Documents........................................................................................................... 5.1

Module and Cable Exchange.......................................................................................................... 5.1

1100.4903.82 7 E-4

Tables CMU

Tables

Table 1-1 Measuring instruments and auxiliary equipment for manual performance test.....................1.2

Table 1-2 Test report ...........................................................................................................................1.18

Table 2-1 Measuring instruments and auxiliary equipment for manual adjustment of the CMU ........... 2.1

Table 5-1 List of power cables available................................................................................................ 5.2

1100.4903.82 8 E-4

CMU Manuals

Contents of Manuals for Universal Radio Communication Tester CMU200/CMU300

Service Manual Instrument

This service manual for Universal Radio Communication Tester CMU provides information on checking the generator for compliance with rated specific ations, as well as on adj ustm ent, repair and troubleshooting. It further contains all the information neces sary for repairing the gener ator by the replacement of modules.

The service manual compris es five chapters and an annex (chapter 5) containing the CMU circuit doc umentation:

Chapter 1 Provides all the information necessar y to c heck CMU for compliance with rated

specifications. The required test equipment is included, too.

Chapter 2 Describes the adjustment of the +5 VDC reference source and of the 10-MHz

reference frequency source as well as the software- controlled adjustm ent of individual module data following module replacement.

Chapter 3 Describes the design of CMU as well as simple measures for repair and fault

diagnosis, in particular, the replacem ent of m odules and ac cess to hardware s ettings by means of service commands.

Chapter 4 Contains information on the extension and modification of CMU by installing

instrument software and retrofitting options.

Chapter 5 Contains spare parts lists and exploded views of CMU.

Operating Manual

In the operating manual for CMU basic unit you will find information about the technical specif ic ations of CMU, the controls and connectors on the f ront and rear panel, necess ary steps for putting the instrument into operation, the basic operating concept, manual and remote control.

For introduction typical measurem ent tasks are explained in detail us ing the f unctions of the user interface and program examples.

The operating manual contains all information on the charac teristic s, operation and r em ote control of the CMU including RF and Audio measurements. It f urther provides hints on preventive m aintenance and fault diagnosis by means of warnings and error messages output by the unit.

Service Manual Modules

The service manual modules is not delivered with the instrument but may be obtained from your R&S service department using the order number 1100.4903.92.

Service manual modules contains inform ation about the individual modules of CMU. This com prises the test and adjustment of the m odules, f ault detection within the modules and the inter face desc ription.

1100.4903.82 0.1 E-4

CMU Documentation

Operating Manuals for Digital and Analog Network Tests

The operating manuals listed in the f ollowing table describe the test of mobile phones supporting different standards by means of the CMU200/CMU300 and the appropriate software and hardware options. Except for hardware-spec ific chapters that ar e not relevant to the software options, the network test operating manuals are organized like the CMU operating manual.

For Options

Manual Order Number Type Description Stock No.

Operating Manual CMU-K21/-K22/-K23

Operating Manual CMU-K27/-K28

Operating Manual CMU-K29

Operating Manual CMU-K30/-K31/K32/-K33

Operating Manual CMU-K81/-K82

Operating Manual CMU-K53

1115.6088.12 CMU-K21 CMU-K22 CMU-K23

1115.6688.12 CMU-K27 CMU-K28

1115.6888.12 CMU-K29 AMPS-MS for CMU-B21 1115.6807.02

1115.4185.12 CMU-K30 CMU-K31 CMU-K32 CMU-K33

CMU-K39 CMU-K41

1115.5581.12 CMU-K81 CMU-K82

1115.5081.12 CMU-K53 Bluetooth for CMU 1115.5000.02

GSM900-MS for CMU-B21 GSM1800-MS for CMU-B21 GSM1900-MS for CMU-B21

TDMA800-MS for CMU-B21 TDMA1900-MS for CMU-B21

GSM400-BS for CMU-B21 GSM900-BS for CMU-B21 GSM1800-BS for CMU-B21 GSM1900-BS for CMU-B21

MOC/MTC EDGE for CMU-K30/31/32/33

CDMA800-MS (IS95) for CMU-B81 CDMA1900-MS (IS95) for CMU-B81

1115.6007.02

1115.6107.02

1115.6207.02

1115.6607.02

1115.6707.02

1115.4004.02

1115.4104.02

1115.4791.02

1115.4604.02

1115.5500.02

1115.5600.02

The GSM base station tests described in operating manual CMU-K30/-K31/-K32 r equire a CMU300 (Universal Radio Comm unic ation Tester for BT S). All other r adio c ommunication equipment is tested with model CMU200.

1100.4903.82 0.2 E-4

CMU General

1 Performance Test

This chapter provides the necessary information for checking the technical data of the CMU. Please read the general notes on the test procedure on page 1.7 first. Then follows a list of the measuring equipment required for the perf ormance test; a f orm for the tes t report is to be f ound at the end of this chapter.

The adjustment of the instrument f or restoring the data integrity and the measuring equipment r equired for this purpose will be described in chapter 2 of this service manual.

General

The technical data of a CMU can be checked in the following ways:

A) Calibration by an R&S Representative with an ACS Calibration System

Advantages

• Automatic procedure

• Small measurement uncertainties

• Calibration and readjustment

• In most cases, the instrument does not have to leave the country

B) Sending the Instrument to the Factory (Memmingen, Germany)

Advantages

• Automatic procedure at the final test setup

• Minimum measurement uncertainties

• Calibration and readjustment

Necessary Documents

• Operating manual CMU200/CMU300

• Data sheet CMU200

Note: It is recommended to read the following journal on the s ubjects "meas urement uncertainty "

and "tolerance analysis": ETSI Technical Report ETR 028, June 1997

1100.4903.82 1.1 E–4

Measuring Instruments and Auxiliary Equipment CMU

Measuring Instruments and Auxiliary Equipment

Table 1-1 Measuring instruments and auxiliary equipment for manual performance test

Item Type of instrument Required characteristics Appropriate device R & S order

1 Signal generator 100 kHz to 2.7 GHz,

2 Spectrum analyzer 100 kHz to 7 GHz,

3 Power meter NRVD with sensors

4 Power amplifier 100 kHz to 2.7 GHz,

5 Harmonics filter attenuate the harmonics of the

6 Directional coupler 50 MHz to 2.7 GHz,

7 Network analyzer

or VSWR Bridge

Generation of a GSM signal (dummy burst)

Demodulation of GSM signals

Pout = 100 W

power amplifiers to min 30 dBc

up to 100 W 100 kHz to 2.7 GHz ZVR

SME03 SMIQ

FSE with FSE-B7 FSIQ FSP–3

NRV-Z4 NRV-Z51

ZRC

number

1038.6002.03 RX measurements

1066.30.10.20

1066.30.10.30

1066.4317.02

1093.4495.03

1043.0009.61 Reflection coefficient/

Use

TX measurements

RX measurements, TX measurements

RX measurements

VSWR RF connectors

1100.4903.82 1.2 E–4

CMU Measuring Instruments and Auxiliary Equipment

Test Setups

The quality of the test setup has an effect on the measurement procedures.

Note: Make sure to use only high-quality coax cables and coax connectors as well as calibrated

measuring equipment.

Reference Frequencies

Test setup REF1:

REF1

Spectrum

Analyzer

(FSE

FSIQ)

GEN

REFIN

DUT

(CMU)

10 MHz Reference Freq.

RF3 OUT

Test setup REF2:

REF2

Spectrum

Analyzer

(FSE or

FSIQ)

DUT

(CMU)

REF IN

REF OUT 2

10 MHz Reference Freq.

TX Level Measurements

Test setup TX1, TX2, TX3, TX4 (depending on level range): ½ Normalize spectrum analyzer (FSIQ) to wideband power meter (NRVD) at Max. Level setting of the

CMU (test setups TX1, TX2, TX3).

The attenuator of the spectrum analyzer must be held at this position over 60 dB. ½ Normalize spectrum analyzer with preamplifier to spectrum analyzer at last level (test setups TX 3,

TX4).

The attenuator of the spectrum analyzer must be held at this position over 60 dB.

TX1

DUT

(CMU)

.. +5 dBm RF3OUT

NRV-Z51

NRVD

1100.4903.82 1.3 E–4

Measuring Instruments and Auxiliary Equipment CMU

TX2

-33 dBm/

DUT (CMU)

TX3

DUT (CMU)

TX4

-16 dBm

RF1 / RF2

-93 dBm to -33 dBm/

-76 dBm to -16 dBm/

-55 dBm to +5 dBm RF1 /

RF2 / RF3 OUT

10 MHz Reference Freq.

NRV-Z4

FSIQ or FSE

NRVD

-130 dBm to -93 dBm/

-117 dBm to -76 dBm/

DUT (CMU)

-90 dBm to -55 dBm

RF1/ RF2/ RF3 OUT

10 MHz Reference Freq.

General TX measurements

Test setup TX5:

TX5

AUX3, pin2

DUT (CMU)

RF1, RF2, RF3

10 MHz Reference Freq.

RF-PreAmp 36 dB

FSE or FSIQ

ext. Trigger input

Spectrum analyzer (FSE or FSIQ)

RX Level measurements

Test setup RX1, RX2 (depending on level range):

1100.4903.82 1.4 E–4

CMU Measuring Instruments and Auxiliary Equipment

RX1

RX2

GEN

Power Ampl.

LPF

depending on max. level of power splitter

Power Ampl.

LPF

Power Splitter

direc t . co upl

-30 dB

NRVZ4

NRV-

NRVD

DUT (CMU)

NRVD

DUT (CMU)

General RX Measurements

Test setup RX3:

RX3

GEN

RF1,RF2,RF4IN

10 MHz Reference Freq.

RX Demodulation Measurements

Test setup RX4:

RX4

GEN

RF4IN

DUT (CMU)

IF3RX CH1

Demodulator (FSE with FSE-B7 or FSIQ)

10 MHz Reference Freq.

1100.4903.82 1.5 E–4

Tolerance Analysis CMU

Tolerance Analysis

Due to the small measur ement uncertainty of the CMU, the measuring equipm ent must m eet stringent requirements. Since the measur ement uncer tainty of the measuring equipm ent to be achieved depends on the test setup used, it is recommended to perform a tolerance analysis.

To be able to trace back errors in the measurement, the measurement uncertainty should also be indicated in the test report.

The tolerances given in the test report refer to the values specified in the data sheet, ie the measurement uncertainties of the test setup used are to be taken into account as well.

Unless otherwise specified, the specified tolerances are always to be observed.

Note: Please take into account the ETSI Technical Report ETR 028.

The given tolerances refer to CMU data sheet 04/99.

1100.4903.82 1.6 E–4

CMU Manual Test Procedure

Manual Test Procedure

Some additional measurem ents can only be performed us ing a mobile phone via the normal operating menus of the CMU. These measurements are described in the section ’Function Test with Mobile Stations'.

The suggested frequencies and levels at which the measurements should be performed have been selected according to the instrument concept. The user can of cour se also select other frequencies and levels within the scope of values guaranteed in the data sheet.

Note: Before testing the rated specifications, allow the instrument to warm up for at least 15 min.

The ambient temperature should be 23 °C to 26 °C.

Selftest

The CMU offers various selftest options for checking the functioning and for troubleshooting. Before carrying out the performance test, the Maintanance m enu in the BASE function gr oup should be called up and the following selftests should be performed:

• Continuous Selftest

• 1Å4/3Å2 RF Loop Test

Preparation:

Test: ½ Select the individual test in the BASE (MAINTENANCE) menu and chec k the res ults

Note: The Continuous Selftest combines the System Self test and Internal RF Loop Selftest. In

½ Start user SW of the CMU (switch on instrument).

(Continuous Selftest, 1Å4/3Å2 RF Loop Test).

this test, only a passed/failed message with error output is indicated. In case of err ors, an error file ‘cst.err’ is created in addition.

1Å4/3Å2 RF Loop Test: Selftest RF Path RF 1ÅRF4 IN and RF3 OUTÅRF2 via external N-coax cable by power measurements via internal generator and analyzer. In this tes t, all measured values are indicated.

To obtain more detailed information start the following tests:

System selftest:

Internal RF Loop Selftest:

FE Selftest:

REF Selftest:

Selftest of the instrument for diagnostic voltages; only a passed/failed message with error output is indicated.

Selftest of the RF path by means of power measur ements via internal generator and analyzer. All measured values are indicated.

Selftest of the RF FRONTEND module via diagnostic voltages. All measured values are indicated.

Selftest of the REFERENCE BOARD module via diagnostic voltages. All measured values are indicated.

DIG Selftest:

RXTX1 Selftest:

1100.4903.82 1.7 E–4

Selftest of the DIGITAL BOARD module via diagnostic voltages. All measured values are indicated

Selftest of the RXTX1 BOARD module via diagnostic voltages. All measured values are indicated.

Manual Test Procedure CMU

Interface Test

IEC-bus Interface

Preparation:

Test: ½ Send the string ‘*IDN?<CR><NL>’ from the controller to the CMU and read the

½ Connect the IEC-bus interfaces of the CMU and the controller via IEC-bus

cables.

reply STRING of the CMU. The reply STRING must contain the following message:

‘ROHDE & SCHWARZ,CMU<Var>,<Ser_Nr>,<Firmware_Vers._Nr>’

RS–232 Interface

Preparation:

Test: ½ Send the string ‘*IDN?<CR><NL>’ from the controller to the CMU and read the

½ Connect the RS–232 interfaces of the CMU and the controller via null-modem

cables (cf. page 5.1.1, "Measuring Instruments and Auxiliary Equipment").

Set the RS–232 interface of the controller to 8 data bits, 1 s tart bit, 1 stop bit, no parity bit, XON/XOFF handshake and 19200 baud.

reply string of the CMU. The reply string must contain the following message: ‘ROHDE & SCHWARZ,CMU<Var>,<Ser_Nr>,<Firmware_Vers._No>’

Reference Frequencies

For different range of adjustm ent of the internal r ef er enc e osc illator , the synchronization with an external reference frequency is checked.

Note: The resolution of the frequency counter/analyzer should be max. 1/10 of the maximum

permissible deviation.

REF IN

The frequency and level ranges and the pull-in range are checked. The signal generator and the frequency counter must be synchronized (test setup REF1).

Preparation:

Control: Set CMU to external reference 52 MHz, RF 1 GHz (menu RF ANALYZER/

Test: Use frequency counter to measure frequency deviation from 1 GHz.

½ Feed in at REF IN: 52 MHz sinewave, 0.5 V(rms) ½ Connect frequency counter to RF3 OUT.

GENERATOR.)

1100.4903.82 1.8 E–4

CMU Manual Test Procedure

Preparation:

Control: ½ Set CMU to external reference 1 MHz, RF 1 GHz. Test: ½ Use frequency counter to measure frequency deviation from 1 GHz.

Preparation:

Control: ½ Set CMU to external reference 10 MHz, RF 1 GHz. Test: ½ Use frequency counter to measure frequency deviation from 1.000 005 000 GHz.

Preparation:

Control: ½ Set CMU to external reference 10 MHz, RF 1 GHz. Test: ½ Use frequency counter to measure frequency deviation from 0.999 995 GHz.

½ Feed in at REF IN: 1 MHz sinewave, 0.5 V(rms). ½ Connect frequency counter to RF3 OUT.

½ Feed in at REF IN: 10.000 050 MHz sinewave, 1.4 V(rms). ½ Connect frequency counter to RF3 OUT.

½ Feed in at REF IN: 9.999 950 MHz sinewave, 1.4 V(rms). ½ Connect frequency counter to RF3 OUT.

REF OUT 1

The level and frequency are checked.

Int. 10 MHz:

REF IN signal:

½ Set CMU to internal reference. ½ Measure at REF OUT 1: 10 MHz, level > 1.4 V(pp).

½ Set CMU to external reference. ½ Feed in at REF IN: 52 MHz TTL, (as an alternative +16 dBm from signal) ½ Measure at REF OUT 1: 52 MHz, level > 1.4 V(pp). ½ Measure at REF OUT 1: frequency 52 MHz ± 1 Hz ½ Feed in at REF IN: 1 MHz TTL, (as an alternative +16 dBm from signal

generator).

½ Measure at REF OUT 1: 1 MHz, level > 0.5 V(rms) (1.4 V(pp)). ½ Measure at REF OUT 1: frequency 1 MHz ± 1 Hz.

REF OUT 2

The level and frequency are checked. T he CMU and the fr equency counter mu st be synchronized (test setup REF2).

REF OUT 2 signal 13 MHz:

½ Set CMU to external reference. ½ Feed in at REF IN: 10 MHz sinewave, 0.5 V(rms). ½ Set CMU to REF OUT 2 13 MHz or 10 MHz (depending on SW; menu

Connection Control/Synch.).

½ Measure at REF OUT 2: 13 MHz or 10 MHz, level > 1.0 V(pp). ½ Measure at REF OUT 2: frequency 13 MHz or 10 MHz ± 1 Hz.

1100.4903.82 1.9 E–4

Manual Test Procedure CMU

TX Frequency Accuracy

Preparation: Test setup TX5, but CMU not synchronized with frequency counter/analyzer and

no external trigger. CMU connector RF3 OUT.

Control: ½ Set CMU to desired frequency, level 0 dBm. Test: ½ Determine frequency deviation from nominal frequency.

TX Frequency Settling Time

Preparation: Test setup TX5, in addition tr igger cable f rom CMU (D-s ub c onnector AUX3, pin2)

to analyzer. CMU connector RF3 OUT.

CMU: Ramping off, hopping on, F1 = start freq., F2 = stop freq. Analyzer: Sweep time 1 ms, Center = stop frequenc y, FM demodulation,

real time off, BW 50 kHz, 1 kHz/Div, external trigger, Slope

negative Control: ½ Set CMU to desired frequencies and hopping, level 0 dBm. Test: Time from trigger point when the specified offset (< 1 kHz) from the stop

frequency is reached.

TX Level Error

Preparation: Test setup TX1 to TX4 (depending on level range).

Control: ½ Set CMU to desired connector, frequency and level (RF Analyzer must be

OFF).

Test: ½ Measure the TX level of the CMU.

Note: The given frequencies and levels are suggested values. Of course, it is also possible to use

other values for the measurement.

VSWR

Preparation:

½ Connect (scalar ) network analyzer to RF1, RF2, RF3 OUT, RF4 IN one after

the other. Cable losses must be corrected.

Control:

Test: ½ Measure VSWR at 10 MHz, 900 MHz, 1800 MHz, 2700 MHz.

1100.4903.82 1.10 E–4

CMU: Switch generator on and set level to minimum (–130 dBm or

–90 dBm), switch RF wideband analyzer on (RF1/RF2/RF4 IN).

CMU Manual Test Procedure

TX Level Settling Time

Preparation:

Control: ½ Set CMU to frequency = 1 GHz, specified level and ramping mode. Test: ½ The time period fr om the trigger point to the point in time when the nominal

Test setup TX5, in addition tr igger cable f rom CMU (D-s ub connec tor AUX3, pin2) to analyzer.

CMU: Connector RF3 OUT 1GHz, Ramping On, Hopping Off. Analyzer: Sweep time = 40 µs, Center = 1 GHz , Span = 0, RBW = 10

MHz, external trigger.

level < 0.5 dB has been reached is measured.

TX Harmonics

Preparation: Test setup TX5, no external trigger

Analyzer: Center = 2 x f Control: ½ Set CMU to connector RF1, specified frequency, level = –27 dBm. Test: The suppression of the signal at twice or three times the nominal frequency is

measured relative to the nominal signal. Control: ½ Set CMU to connector RF2, specified frequency, level = –10 dBm.

or Center = 3 x f

nom

, Span = 1 MHz.

nom

Test: The suppression of the signal at twice or three times the nominal frequency is

measured relative to the nominal signal. Control: ½ Set CMU to connector RF3 OUT, specified frequency, level = +10 dBm. Test: The suppression of the signal at twice and three times the nominal f requency is

measured relative to the nominal signal.

TX Non Harmonics TX In-Band Spurious Signals

Spurious signals within the specified frequency bands are checked. Preparation Test setup TX5, no external trigger

Analyzer Start/Stop = specified frequency range, RBW = 100 kHz Control: ½ Set CMU to connector RF3 OUT, specified setting frequency, level = 0 dBm. Test: The suppression of the signal is m easured at the tes t frequenc y relative to the set

signal.

1100.4903.82 1.11 E–4

Manual Test Procedure CMU

TX Fixed Spurious Signals

Fixed spurious signals are checked. Preparation: Test setup TX5, no external trigger.

Analyzer: Center = specified test frequency, RBW = 100 kHz, Span = 1 MHz. Control: ½ Set CMU to connector RF3 OUT, specified setting frequency, specified level. Test: The suppression of the signal is m easured at the tes t frequenc y relative to the set

signal.

TX SSB Phase Noise

Preparation Test setup TX5, no external trigger

½ Connect spectrum analyzer or modulation analyzer to RF3 OUT. Control: ½ Set CMU generator to specified RF frequency.

Output level at RF3 OUT 0 dBm, Analyzer to specified center frequency, Span = 50 kHz to 5 MHz, RBW = Span/500, Noise measurement function.

Test ½ Measure the phase noise at the specified spacing from the carrier.

TX Residual FM

Preparation: Test setup TX5, no external trigger.

½ Connect spectrum analyzer or modulation analyzer to RF1. Control: ½ Set CMU generator to the specified RF frequency.

Output level at RF1 –27 dBm, analyzer to specified center frequency, FM

demodulator. Test: ½ The residual FM with the specified weighting is measured.

TX Residual AM

Preparation: Test setup TX5, no external trigger.

½ Connect spectrum analyzer or modulation analyzer to RF1. Control: ½ Set CMU generator to specified RF frequency.

Output level at RF1 –27 dBm, analyzer to specified center frequency, AM

demodulator. Test: ½ The residual AM with the specified weighting is measured.

1100.4903.82 1.12 E–4

CMU Manual Test Procedure

TX Carrier/Sideband Suppression, Max. Distorti on

The modulation quality of the analog IQ modulator of the CMU is measured. Preparation Test setup TX5, no external trigger.

½ Connect spectrum analyzer to RF3 OUT. Control: ½ Set CMU generator to specified RF frequency.

Output level at RF3 OUT, 0 dBm,

½ Switch on RF generator with offset modulation, 300- kHz baseband filter,

½ Set analyzer to center frequency f

= 1000 MHz, Span = 300 kHz / 3 MHz

Test: The suppression of the carrier at f

+ f

signal at f

mod

is measured relative to the useful sideband

RX Power Meter (Frequency-Selective)

Preparation: Test setup RX1, RX2 (depending on level range).

Control: ½ Set CMU to desired RX frequency and level and Input in menu RF

ANALYZER/ GENERATOR. Measuring Bandwidth = 1 kHz.

Test: ½ Measure RX level measurement accuracy of CMU.

Note: The given frequencies and levels are s uggested v alues ; of c ours e, it is als o poss ible to us e

other values for the measurement.

RX Power Meter (Wideband)

Preparation Test setup RX1, RX2 (depending on level range).

Control: ½ Set CMU to desired RX connector, frequency and level and Input in menu RF

Analyzer/ Generator. Measuring Bandwidth = Wide

Test: ½ Measure RX level measurement accuracy of CMU.

Note: T he given frequencies and levels are suggested values; of cours e, it is also possible to use

other values for the measurement.

RX Harmonics

Preparation: Test setup RX3,

Generator = f Control: ½ Set CMU to connector RF2, Max Level = 2 dBm.

1100.4903.82 1.13 E–4

; level = 0 dBm.

Manual Test Procedure CMU

Test: ½ The suppress ion of the signal at twice and three times the input frequency is

measured relative to the input signal.

Preparation:

Test setup RX3

Generator = f

; level = –2 dBm Control: ½ Set CMU to connector RF4 IN, Max Level = 0 dBm. Test: ½ The suppression of the s ignal at twice and three times of input frequency is

measured relative to the input signal.

RX Spurious Response / Image Rejection

Preparation: Test setup RX3,

Generator = f Control: ½ Set CMU to connector RF2, Max Level = 2 dBm, Mode = Low Distortion Test: ½ The suppression of the spurious or image signal is measured relative to the

input signal.

Preparation:

Test setup RX3,

Generator = f Control: ½ Set CMU to connector RF4 IN, Max level = 0 dBm, Mode = Low Distortion

; level = 0 dBm.

; level = –2 dBm.

Test: The suppression of the spurious or im age signal is meas ured relative to the input

signal.

RX SSB Phase Noise

Preparation: Test setup RX3,

Generator = f Control: ½ Set CMU to connector RF2, Max Level = 10 dBm and to desired frequency.

½ Switch on frequency-selective power meter. Test: The measurement is taken with a small test bandwidth at different carrier offsets.

Note: The input level is +10 dBm, RBW = 100 Hz

+ df ; level = 10 dBm.

iCMU

--> Phase noise = measured value –10 dB –21 dB.

1100.4903.82 1.14 E–4

CMU Manual Test Procedure

RX Residual FM/AM

Preparation: Test setup RX4,

Generator = f Control: ½ Set CMU to connector RF4 IN, Max Level = –20 dBm and to desired

frequency.

½ Switch on frequency-selective power meter. Test: The measurement is taken with an external FM/AM demodulation instrument (FSE

with FSE-B7) via the IF3RXCH1 BNC connector at the rear panel of the CMU.

½ Set the FSE to desired frequency, ref. level, AF filters.

; level = –20 dBm.

iCMU

RX Dynamic/ Average Noise Level

Preparation: No signal is fed in, CMU generator is OFF.

Control: Set CMU to given receive frequency, Max. Level, Bandwidth, Mode = Low Noise. Test: Use frequency-selective power meter, measurement bandwidth = 1 kHz / 500 kHz,

measured value in dB below reference level (Max. Level).

1100.4903.82 1.15 E–4

Manual Test Procedure CMU

Options for CMU200

The following tests can be carr ied out only if the GSM-MS (CMU- K2x) s of tware options are ins talled and enabled by entering a key code.

TX GSM Modulation

Only with options CMU-K21, CMU-K22, CMU-K23 or CMU-K24: The GSM phase/frequency error of a TX path is measured.

Preparation: Test setup TX5:

½ Connect spectrum analyzer FSIQ to RF3 OUT. Control: ½ Set CMU generator to specified RF frequency.

Output level at RF3 OUT 10 dBm

Training Sequence -> GSM0;

Bit Mod. -> PRBS

Transmission -> BURST

Settings at spectrum analyzer FSIQ:

Mode -> Digital Standards -> GSM

Mode -> Meas Result -> Result_Length -> 146 (the useful part normally comprises

147 bits, however, the FSIQ can be set to an integer number of bits only and

therefore cuts off 0.5 bits at the beginning and at the end of the measurement

range)

Trigger -> Find Sync -> ON

Trigger -> Sync Pattern -> gsm_bts0 (training sequence GSM0)

Trigger -> Sync Offset -> 60 symbols

Test: Phase (rms and peak) and frequency errors are measured according to GSM

recommendation.

RX GSM Demodulation

Only with option CMU-K21, CMU-K22, CMU-K23 or CMU-K24: The GSM phase/frequency error of a RX path is measured. Preparation: ½ Connect GSM signal generator to RF2 (test setup RX3).

The signal generator must be synchronized with the CMU via the 10 MHz

reference frequency. Control: Signal generator SMIQ: GSM signal at given frequenc y, level according to table,

bursted with the following settings:

Digital Std -> GSM/EDGE -> State -> ON; Digital Std -> GSM/EDGE -> Select Slot -> Burst type -> NORM Digital Std -> GSM/EDGE -> Select Slot -> Slot Level -> FULL Digital Std -> GSM/EDGE -> Select Slot -> Data -> PN9 Digital Std -> GSM/EDGE -> Select Slot -> TSC -> TSC0

CMU: GSM Non Signalling, training sequence = GSM 0, trigger source = IF

Power, Trigger Level = Medium

Test:

½ Measure GSM phase error (rms and peak) as well as frequency error.

1100.4903.82 1.16 E–4

CMU Manual Test Procedure

Function Test with Mobile Stations (CMU200)

GSM mobile test

Only with Option CMU-K21, CMU-K22, CMU- K23 or CMU-K24.

Location Update Call to MS Call Release Call from MS Echo test Power ramp, Phase/Frequency error measurement Handover GSM900/1800

CDMA mobile test

Only with Option CMU-K81, CMU-K82.

Location Update Call to MS Call Release Call from MS Echo test

IS136-mobile test

Only with Option CMU-K27, CMU-K28.

Location Update Call to MS Call Release Call from MS Echo test

AMPS-mobile test

Only with Option CMU-K29.

Location Update Call to MS Call Release Call from MS Echo test

1100.4903.82 1.17 E–4

Test Report CMU

Test Report

ROHDE & SCHWARZ Universal Radiocommunication Tester CMU 1100.0008

Serial number: Test person: Date: Signature:

Table 1-2 Test report

Item

No.

Ambient temperature during calibration 23 26 °C

Description

Measure-

ment to

section

Min. Actual Max.

Measurement

General Tests

CONTINUOUS SELFTEST Passed passed 1Å4/3Å2 RF LOOP TEST Passed passed

Adjusting +5 V DC REFERENCE VOLTAGE

Adjusting TCXO 10 MHz at RF3 OUT 1 GHz

(if none of the options CMU-B11 or CMU-B12 is installed)

Adjusting CMU-B11 OCXO 10 MHz at RF3 OUT 1GHz

(if option CMU-B11is installed) Adjusting CMU-B12 OCXO 10 MHz at

RF3 OUT 1GHz (if option CMU-B12 is installed)

Chapter 2 4.999 5.001 mV

Chapter 2 –50 +50 Hz

Chapter 2 –10 +5 Hz

uncertainty

Unit

REF IN 52 MHz REF IN –1+1Hz REF IN 1 MHz –1+1Hz REF IN 10 MHz +50 Hz –1+1Hz REF IN 10 MHz –50 Hz –1+1Hz REF OUT 1 Int 10 MHz REF OUT 1 1.4 5 V(pp) REF OUT 1 52 MHz 1.4 5 V(pp) REF OUT 1 52 MHz –1+1Hz REF OUT 1 1 MHz 1.4 5 V(pp) REF OUT 1 1 MHz –1+1Hz

1100.4903.82 1.18 E–4

CMU Test Report

Item

No.

REF OUT 2 13 MHz or 10 MHz REF OUT 2 1 5 V(pp) REF OUT 2 13 MHz or 10 MHz –1+1Hz

Description

Measure-

ment to

section

Min. Actual Max.

Measurement

uncertainty

Unit

TX Frequency A ccurac y

TX Frequency accuracy 2200 MHz TX

Frequency accuracy

–2200 –220 –11

+2200 (TCXO), +220 (B11), +11 (B12)

TX Frequency Settling

TX frequency settling time F1 = 100 MHz ->F2 = 200 MHz to <1 kHz

TX frequency settling time F1 = 1800 MHz ->F2 = 1900 MHz to <1 kHz

TX frequency settling time F1 = 2200 MHz ->F2 = 2100 MHz to <1 kHz

TX frequency settling time F1 = 100 MHz ->F2 = 2200 MHz to <1 kHz

TX frequency settling time F1 = 2000 MHz ->F2 = 100 MHz to <1 kHz

TX Frequency settling

400

µs

VSWR

VSWR RF1 10 MHz VSWR 1.2 VSWR RF1 900 MHz 1.2 VSWR RF1 1800 MHz 1.2 VSWR RF1 2700 MHz 1.6 VSWR RF2 10 MHz 1.2 VSWR RF2 900 MHz 1.2 VSWR RF2 1800 MHz 1.2 VSWR RF2 2700 MHz 1.6 VSWR RF3 OUT 10 MHz 1.5 VSWR RF3 OUT 900 MHz 1.5 VSWR RF3 OUT 1800 MHz 1.5 VSWR RF3 OUT 2700 MHz 1.7 VSWR RF4 IN 10 MHz 1.5 VSWR RF4 IN 900 MHz 1.5 VSWR RF4 IN 1800 MHz 1.5 VSWR RF4 IN 2700 MHz 1.6

1100.4903.82 1.19 E–4

Test Report CMU

Item

No.

Description

TX Level Settling Time

TX Level settling time at P = +10 dBm to ∆P = 0.5 dB

TX Level settling time at P = –20 dBm to ∆P = 0.5 dB

TX Level settling time at P = –50 dBm to ∆P = 0.5 dB

TX Harmonics

TX 2nd harmonic at RF2 at carrier frequency = 10 MHz

TX 2nd harmonic at RF2 at carrier frequency = 900 MHz

TX 2nd harmonic at RF2 at carrier frequency = 1800 MHz

TX 2nd harmonic at RF2 at carrier frequency = 2200 MHz

TX 3rd harmonic at RF2 at carrier frequency = 10 MHz

TX 3rd harmonic at RF2 at carrier frequency = 900 MHz

TX 3rd harmonic at RF2 at carrier frequency = 1800 MHz

TX 3rd harmonic at RF2 at carrier frequency = 2200 MHz

TX 2nd harmonic at RF3 OUT at carrier frequency = 10 MHz

TX 2nd harmonic at RF3 OUT at carrier frequency = 900 MHz

TX 2nd harmonic at RF3 OUT at carrier frequency = 1800 MHz

TX 2nd harmonic at RF3 OUT at carrier frequency = 2200 MHz

TX 3rd harmonic at RF3 OUT at carrier frequency = 10 MHz

TX 3rd harmonic at RF3 OUT at carrier frequency = 900 MHz

TX 3rd harmonic at RF3 OUT at carrier frequency = 1800 MHz

TX 3rd harmonic at RF3 OUT at carrier frequency = 2200 MHz

Measure-

ment to

section

TX level settling time

TX harmonics

Min. Actual Max.

–30 dBc

–20 dBc

Measurement

uncertainty

Unit

µs

TX In-band Spurious Responses

TX In-band spurious CMU setting = 460.9 MHz search freq. ± 5.500 kHz from carrier

TX in-band spurious responses

–40 dBc

1100.4903.82 1.20 E–4

CMU Test Report

Item

No.

TX In-band spurious CMU setting = 468.1 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 489.3 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 496.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 925.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 960.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 1805.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 1880.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 869.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 894.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 1930.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 1990.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 1920.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 1980.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 2110.5 MHz search freq. ± 5.500 kHz from carrier

TX In-band spurious CMU setting = 2170.5 MHz search freq. ± 5.500 kHz from carrier

Description

Measure-

ment to

section

Min. Actual Max.

–40 dBc

Measurement

uncertainty

Unit

TX Fixed Spurious Responses

TX fixed spurious, CMU setting = 14.35 MHz search freq. 13.85 MHz

Level = –20 dBm

TX fixed spurious

–40 dBc

1100.4903.82 1.21 E–4

Test Report CMU

Item

No.

TX fixed spurious, CMU setting = 37.4333 MHz search freq. 36.9333 MHz

Level = –20 dBm TX fixed spurious,

CMU setting = 42.05 MHz search freq. 41.55 MHz

Level = –20 dBm TX fixed spurious,

CMU setting = 111.3 MHz search freq. 110.8 MHz

Level = –20 dBm TX fixed spurious,

CMU setting = 222.1 MHz search freq. 221.6 MHz

Level = –20 dBm TX fixed spurious,

CMU setting = 332.9 MHz search freq. 332.4 MHz

Level = –20 dBm TX fixed spurious,

CMU setting = 501.87 MHz search freq. 501.37 MHz

Level = –20 dBm TX fixed spurious,

CMU setting = 1330.1 MHz search freq. 1329.6 MHz

Level = 0 dBm TX fixed spurious,

CMU setting = 100 MHz search freq. 1917.12 MHz

Level = 0 dBm TX fixed spurious,

CMU setting = 1300 MHz search freq. 2142.08 MHz

Level = 0 dBm TX fixed spurious,

CMU setting = 2200 MHz search freq. 3042.08 MHz

Level = 0 dBm TX fixed spurious,

CMU setting = 100 MHz search freq. 86.15 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 100 MHz search freq. 113.85 MHz

Level = +10 dBm

Description

Measure-

ment to

section

Min. Actual Max.

–40 dBc

Measurement

uncertainty

Unit

1100.4903.82 1.22 E–4

CMU Test Report

Item

No.

TX fixed spurious, CMU setting = 100 MHz search freq. 1817.12 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 100 MHz search freq. 1917.12 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 900 MHz search freq. 917.12 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 900 MHz search freq. 1817.12 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1199 MHz search freq. 618.12 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1199 MHz search freq. 1817.12 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1201 MHz search freq. 842.08 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1201 MHz search freq. 1684.16 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1201 MHz search freq. 2043.08 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1201 MHz search freq. 2885.16 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1700 MHz search freq. 842.08 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1700 MHz search freq. 2542.08 MHz

Level = +10 dBm

Description

Measure-

ment to

section

Min. Actual Max.

–40 dBc

Measurement

uncertainty

Unit

1100.4903.82 1.23 E–4

Test Report CMU

Item

No.

TX fixed spurious, CMU setting = 1800 MHz search freq. 842.08 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1800 MHz search freq. 1684.16 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1800 MHz search freq. 2642.08 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1900 MHz search freq. 842.08 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1900 MHz search freq. 1057.92 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1900 MHz search freq. 1684.16 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 1900 MHz search freq. 2742.08 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 2199 MHz search freq. 842.08 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 2199 MHz search freq. 1356.92 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 2199 MHz search freq. 1684.16 MHz

Level = +10 dBm TX fixed spurious,

CMU setting = 2199 MHz search freq. 3041.08 MHz

Level = +10 dBm

Description

Measure-

ment to

section

Min. Actual Max.

–40 dBc

Measurement

uncertainty

Unit

TX SSB Phase Noise

TX SSB phase noise f = 100 MHz, ∆f = 20 kHz

TX SSB phase noise f = 100 MHz, ∆f = 250 kHz

TX SSB phase noise

–100 dBc

–110 dBc

1100.4903.82 1.24 E–4

CMU Test Report

Item

No.

TX SSB phase noise f = 100 MHz, ∆f = 400 kHz

TX SSB phase noise f = 100 MHz, ∆f = 1990 kHz

TX SSB phase noise f = 945 MHz, ∆f = 20 kHz

TX SSB phase noise f = 945 MHz, ∆f = 250 kHz

TX SSB phase noise f = 945 MHz, ∆f = 400 kHz

TX SSB phase noise f = 945 MHz, ∆f = 1990 kHz

TX SSB phase noise f = 1850 MHz, ∆f = 20 kHz

TX SSB phase noise f = 1850 MHz, ∆f = 250 kHz

TX SSB phase noise f = 1850 MHz, ∆f = 400 kHz

TX SSB phase noise f = 1850 MHz, ∆f = 1990 kHz

TX SSB phase noise f = 2200 MHz, ∆f = 20 kHz

TX SSB phase noise f = 2200 MHz, ∆f = 250 kHz

TX SSB phase noise f = 2200 MHz, ∆f = 400 kHz

TX SSB phase noise f = 2200 MHz, ∆f = 1990 kHz

Description

Measure-

ment to

section

Min. Actual Max.

–110 dBc

–100 dBc

–110 dBc

–100 dBc

–110 dBc

–100 dBc

–110 dBc

Measurement

uncertainty

Unit

TX Residual FM

TX Residual FM at 1000 MHz 30 Hz to 15 kHz, rms

TX Residual FM at 1000 MHz 30 Hz to 15 kHz, peak

TX Residual FM at 1000 MHz CCITT, rms

TX Residual FM at 2000 MHz 30 Hz to 15 kHz, rms

TX Residual FM at 2000 MHz 30 Hz to 15 kHz, peak

TX Residual FM at 2000 MHz CCITT, rms

50 Hz

200 Hz

5Hz

50 Hz

200 Hz

5Hz

TX Residual AM

TX Residual AM at 500 MHz CCITT, rms

TX Residual AM at 1000 MHz CCITT, rms

0.02 %

1100.4903.82 1.25 E–4

Test Report CMU

Item

No.

Description

TX Residual AM at 1500 MHz CCITT, rms

TX Residual AM at 2200 MHz CCITT, rms

TX Modulation characteristics

TX Modulation characteristics carrier suppression, f = 1000 MHz

TX Modulation characteristics carrier suppression, f f

= 1000 MHz

= 10 kHz, f

mod

= –20 kHz, f

mod

= 20 kHz, f

mod

= 30 kHz, f

mod

= 60 kHz, f

mod

= 100 kHz, f

mod

= 135 kHz, f

mod

= –135 kHz,

mod

Measure-

ment to

section

Min. Actual Max.

0.02 %

–40 dBc

Measurement

uncertainty

Unit

RX Harmonics

RX 2nd harmonic at RF2 , fIN = 50 MHz, CMU frequency = 100 MHz

RX 2nd harmonic at RF2 fIN = 600 MHz, CMU frequency = 1200 MHz

RX 2nd harmonic at RF2 , fIN = 625 MHz, CMU frequency = 1250 MHz

RX 2nd harmonic at RF2 , fIN = 1100 MHz, CMU frequency = 2200 MHz

RX 3rd harmonic at RF2 , fIN = 50 MHz, CMU frequency = 150 MHz

RX 3rd harmonic at RF2 , fIN = 400 MHz, CMU frequency = 1200 MHz

RX 3rd harmonic at RF2 , fIN = 420 MHz, CMU frequency = 1260 MHz

RX 3rd harmonic at RF2 , fIN = 730 MHz, CMU frequency = 2190 MHz

RX 2nd harmonic at RF4 IN , fIN = 50 MHz, CMU frequency = 100 MHz

RX 2nd harmonic at RF4 IN , fIN = 600 MHz, CMU frequency = 1200 MHz

RX harmonics

–30 dBc

–20 dBc

1100.4903.82 1.26 E–4

CMU Test Report

Item

No.

Description

RX 2nd harmonic at RF4 IN , fIN = 625 MHz, CMU frequency = 1250 MHz

RX 2nd harmonic at RF4 IN , fIN = 1100 MHz, CMU frequency = 2200 MHz

RX 3rd harmonic at RF4 IN , fIN = 50 MHz, CMU frequency = 150 MHz

RX 3rd harmonic at RF4 IN , fIN = 400 MHz, CMU frequency = 1200 MHz

RX 3rd harmonic at RF4 IN , fIN = 420 MHz, CMU frequency = 1260 MHz

RX 3rd harmonic at RF4 IN , fIN = 730 MHz, CMU frequency = 2190 MHz

RX Spurious Response

RX inherent spurious response at RF2,

= 1876.03 MHz, CMU frequency =

903 MHz RX inherent spurious response at RF2,

= 881.6 MHz, CMU frequency = 903

MHz RX inherent spurious response at RF2,

= 843.085 MHz, CMU frequency =

200 MHz RX inherent spurious response at RF2,

= 421.5425 MHz, CMU frequency =

200 MHz RX inherent spurious response at RF2,

= 908.0575 MHz, CMU frequency =

300 MHz RX inherent spurious response at RF2,

= 605.3716667 MHz, CMU

frequency = 300 MHz RX inherent spurious response at RF2,

= 454.02875 MHz, CMU frequency

= 300 MHz RX inherent spurious response at RF2,

= 500 MHz, CMU frequency =

505.35 MHz RX inherent spurious response at RF2,

= 968.0575 MHz, CMU frequency =

60 MHz RX inherent spurious response at RF2,

= 1200 MHz, CMU frequency =

291.9425 MHz RX inherent spurious response at RF2,

= 645.3716667 MHz, CMU

frequency = 60 MHz RX inherent spurious response at RF2,

= 1200 MHz, CMU frequency =

891.9425 MHz RX inherent spurious response at RF2,

= 1936.115 MHz, CMU frequency =

60 MHz

Measure-

ment to

section

RX Spurious response

Min. Actual Max.

–20 dBc

–50 dBc

Measurement

uncertainty

Unit

1100.4903.82 1.27 E–4

Test Report CMU

Item

No.

Description

RX inherent spurious response at RF2,

= 2200 MHz, CMU frequency =

191.9425 MHz RX inherent spurious response at RF2,

= 1226.97 MHz, CMU frequency =

2200 MHz RX inherent spurious response at RF2,

= 1821.4 MHz, CMU frequency =

1800 MHz RX inherent spurious response at RF2,

= 2936.17 MHz, CMU frequency =

1250 MHz RX inherent spurious response at RF2,

= 843.085 MHz, CMU frequency =

2200 MHz RX inherent spurious response at RF2,

= 421.5425 MHz, CMU frequency =

2200 MHz RX inherent spurious response at RF2,

= 281.0283333 MHz, CMU

frequency = 2200 MHz RX inherent spurious response at RF2,

= 1816.115 MHz, CMU frequency =

2200 MHz RX inherent spurious response at RF2,

= 908.0575 MHz, CMU frequency =

2200 MHz RX inherent spurious response at RF2,

= 605.3716667 MHz, CMU

frequency = 2200 MHz RX inherent spurious response at RF2,

= 1671.5425 MHz, CMU frequency

= 1250 MHz RX inherent spurious response at RF2,

= 2200 MHz, CMU frequency =

1778.4575 MHz RX inherent spurious response at RF2,

= 1812.056667 MHz, CMU

frequency = 1250 MHz RX inherent spurious response at RF2,

= 1681.5425 MHz, CMU frequency

= 1680 MHz RX inherent spurious response at RF2,

= 1468.085 MHz, CMU frequency =

1250 MHz RX inherent spurious response at RF2,

= 1683.085 MHz, CMU frequency =

1680 MHz RX inherent spurious response at RF2,

= 1943.085 MHz, CMU frequency =

2200 MHz RX inherent spurious response at RF2,

= 978.7233333 MHz, CMU

frequency = 1250 MHz

Measure-

ment to

section

Min. Actual Max.

–50 dBc

Measurement

uncertainty

Unit

1100.4903.82 1.28 E–4

CMU Test Report

Item

No.

Description

RX inherent spurious response at RF2,

= 1295.39 MHz, CMU frequency =

2200 MHz RX inherent spurious response at RF2,

= 1210.843333 MHz, CMU

frequency = 1210.743333 MHz RX inherent spurious response at RF2,

= 1262.31375 MHz, CMU frequency

= 1260 MHz RX inherent spurious response at RF4

= 968.0575 MHz, CMU

IN, f

frequency = 60 MHz RX inherent spurious response at RF4

= 1200 MHz, CMU frequency =

IN, f

291.9425 MHz RX inherent spurious response at RF4

= 645.3716667 MHz, CMU

IN, f

frequency = 60 MHz RX inherent spurious response at RF4

= 1200 MHz, CMU frequency =

IN, f

891.9425 MHz RX inherent spurious response at RF4

= 1936.115 MHz, CMU

IN, f

frequency = 60 MHz RX inherent spurious response at RF4

= 2200 MHz, CMU frequency =

IN, f

191.9425 MHz RX inherent spurious response at RF4

= 1671.5425 MHz, CMU

IN, f

frequency = 1250 MHz RX inherent spurious response at RF4

= 2200 MHz, CMU frequency =

IN, f

1778.4575 MHz RX inherent spurious response at RF4

= 1812.056667 MHz, CMU

IN, f

frequency = 1250 MHz RX inherent spurious response at RF4

= 1681.5425 MHz, CMU

IN, f

frequency = 1680 MHz RX inherent spurious response at RF4

= 1468.085 MHz, CMU

IN, f

frequency = 1250 MHz RX inherent spurious response at RF4

= 1683.085 MHz, CMU

IN, f

frequency = 1680 MHz RX inherent spurious response at RF4

= 1943.085 MHz, CMU

IN, f

frequency = 2200 MHz RX inherent spurious response at RF4

= 978.7233333 MHz, CMU

IN, f

frequency = 1250 MHz RX inherent spurious response at RF4

= 1295.39 MHz, CMU frequency

IN, f

= 2200 MHz

Measure-

ment to

section

Min. Actual Max.

–50 dBc

Measurement

uncertainty

Unit

1100.4903.82 1.29 E–4

Test Report CMU

Item

No.

RX inherent spurious response at RF4 IN, f

frequency = 1210.743333 MHz RX inherent spurious response at RF4

IN, f

frequency = 1260 MHz

Description

= 1210.843333 MHz, CMU

= 1262.31375 MHz, CMU

RX SSB Phase Noise

RX SSB phase noise at RF2 f = 100 MHz, ∆f = +20 kHz

RX SSB phase noise at RF2 f = 100 MHz, ∆f = +250 kHz

RX SSB phase noise at RF2 f = 100 MHz, ∆f = +400 kHz

RX SSB phase noise at RF2 f = 100 MHz, ∆f = +1990 kHz

RX SSB phase noise at RF2 f = 945 MHz, ∆f = +20 kHz

RX SSB phase noise at RF2 f = 945 MHz, ∆f = +250 kHz

RX SSB phase noise at RF2 f = 945 MHz, ∆f = +400 kHz

RX SSB phase noise at RF2 f = 945 MHz, ∆f = +1990 kHz

RX SSB phase noise at RF2 f = 1850 MHz, ∆f = –20 kHz

RX SSB phase noise at RF2 f = 1850 MHz, ∆f = -–250 kHz

RX SSB phase noise at RF2 f = 1850 MHz, ∆f = -–400 kHz

RX SSB phase noise at RF2 f = 1850 MHz, ∆f = -–1990 kHz

RX SSB phase noise at RF2 f = 2200 MHz, ∆f = –20 kHz

RX SSB phase noise at RF2 f = 2200 MHz, ∆f = –250 kHz

RX SSB phase noise at RF2 f = 2200 MHz, ∆f = –400 kHz

RX SSB phase noise at RF2 f = 2200 MHz, ∆f = –1990 kHz

Measure-

ment to

section

RX SSB phase noise

Min. Actual Max.

–50 dBc

–100

–110

–118

–100 dBc/Hz

–110 dBc/Hz

–118 dBc/Hz

–100 dBc/Hz

–110 dBc/Hz

–118 dBc/Hz

–100 dBc/Hz

–110 dBc/Hz

–118 dBc/Hz

Measurement

uncertainty

Unit

RX Residual FM/AM

RX Residual FM at 500 MHz at RF4 IN, –20 dBm 30Hz to 15 kHz, rms

RX Residual FM at 500 MHz at RF4 IN, –20 dBm 30Hz to 15 kHz, peak

RX residual FM/AM

50 Hz

200 Hz

1100.4903.82 1.30 E–4

CMU Test Report

Item

No.

RX Residual FM at 500 MHz at RF4 IN, –20 dBm CCITT, rms

RX Residual AM at 500 MHz at RF4 IN, –20 dBm CCITT, rms

RX Residual FM at 900 MHz at RF4 IN, –20 dBm 30Hz to 15 kHz, rms

RX Residual FM at 900 MHz at RF4 IN, –20 dBm 30Hz to 15 kHz, peak

RX Residual FM at 900 MHz at RF4 IN, –20 dBm CCITT, rms

RX Residual AM at 900 MHz at RF4 IN, –20 dBm CCITT, rms

RX Residual FM at 1900 MHz at RF4 IN, –20 dBm 30Hz to 15 kHz, rms

RX Residual FM at 1900 MHz at RF4 IN, –20 dBm 30Hz to 15 kHz, peak

RX Residual FM at 1900 MHz at RF4 IN, –20 dBm CCITT, rms

RX Residual AM at 1900 MHz at RF4 IN, –20 dBm CCITT, rms

RX Residual FM at 2100 MHz at RF4 IN, –20 dBm 30Hz to 15 kHz, rms

RX Residual FM at 2100 MHz at RF4 IN, –20 dBm 30Hz to 15 kHz, peak

RX Residual FM at 2100 MHz at RF4 IN, –20 dBm CCITT, rms

RX Residual AM at 2100 MHz at RF4 IN, –20 dBm CCITT, rms

RX Residual FM at 2500 MHz at RF4 IN, –20 dBm 30Hz to 15 kHz, rms

RX Residual FM at 2500 MHz at RF4 IN, –20 dBm 30Hz to 15 kHz, peak

RX Residual FM at 2500 MHz at RF4 IN, –20 dBm CCITT, rms

RX Residual AM at 2500 MHz at RF4 IN, –20 dBm CCITT, rms

Description

Measure-

ment to

section

Min. Actual Max.

5Hz

0.02 %

50 Hz

200 Hz

5Hz

0.02 %

50 Hz

200 Hz

5Hz

0.02 %

50 Hz

200 Hz

5Hz

0.02 %

50 Hz

200 Hz

5Hz

0.02 %

Measurement

uncertainty

Unit

1100.4903.82 1.31 E–4

Test Report CMU

Item

No.

Description

RX Average Noise Level

RX average noise level RF1, RBW = 1 kHz, expPow = 47 dBm, f = 10 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 47 dBm, f = 500 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 47 dBm, f = 1000 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 47 dBm, f = 1500 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 47 dBm, f = 2200 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 47 dBm, f = 2700 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 10 dBm, f = 10 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 10 dBm, f = 500 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 10 dBm, f = 1000 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 10 dBm, f = 1500 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 10 dBm, f = 2200 MHz

RX average noise level RF1, RBW = 1 kHz, expPow = 10 dBm, f = 2700 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = 33 dBm, f = 10 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = 33 dBm, f = 500 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = 33 dBm, f = 1000 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = 33 dBm, f = 1500 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = 33 dBm, f = 2200 MHz

Measure-

ment to

section

RX average noise level

Min. Actual Max.

–100 dBc

–95 dBc

–100 dBc

–95 dBc

–73 dBc

Measurement

uncertainty

Unit

1100.4903.82 1.32 E–4

CMU Test Report

Item

No.

RX average noise level RF2, RBW = 500 kHz, expPow = 33 dBm, f = 2700 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = –4 dBm, f = 10 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = –4 dBm, f = 500 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = –4 dBm, f = 1000 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = –4 dBm, f = 1500 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = –4 dBm, f = 2200 MHz

RX average noise level RF2, RBW = 500 kHz, expPow = –4 dBm, f = 2700 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = –22 dBm, f = 10 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = 0 dBm, f = 500 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = 0 dBm, f = 1000 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = 0 dBm, f = 1500 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = 0 dBm, f = 2200 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = 0 dBm, f = 2700 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = –22 dBm, f = 10 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = –22 dBm, f = 500 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = –22 dBm, f = 1000 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = –22 dBm, f = 1500 MHz

RX average noise level RF4 IN, RBW = 1 kHz, expPow = –22 dBm, f = 2200 MHz

Description

Measure-

ment to

section

Min. Actual Max.

–68 dBc

–73 dBc

–68 dBc

–100 dBc

–95 dBc

–100 dBc

Measurement

uncertainty

Unit

1100.4903.82 1.33 E–4

Test Report CMU

Item

No.

RX average noise level RF4 IN, RBW = 1 kHz, expPow = –22 dBm, f = 2700 MHz

Description

Measure-

ment to

section

Min. Actual Max.

–95 dBc

TX Generator level error at RF1 (measurement on frequency cal. points)

Frequency MHz

Level in dBm

Tolerance See data sheet:

10, 100, 200, 300, 400, 500, 600, 700, 800, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, , 2100, 2200, 2300, 2400, 2500, 2600, 2700

–33, –55, –73, –87, –106, –117, –130 –33, –55, –73, –87, –106, –117, –130

Base Unit RF Generator

820, 840, 860, 880, 900, 920, 940, 960, 1710, 1730, 1750, 1770, 1790, 1810, 1830, 1850, 1870, 1890, 1910, 1930, 1950, 1970, 1990

See data sheet: GSM Specification RF Generator

TX Generator level error at RF2 (measurement on frequency cal. points)

Frequency MHz

Level in dBm

Tolerance See data sheet:

10, 100, 200, 300, 400, 500, 600, 700, 800, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, , 2100, 2200, 2300, 2400, 2500, 2600, 2700

–16, –41, –59, –73, –95, –106, –117 –16, –41, –59, –73, –95, –106, –117

Base Unit RF Generator

820, 840, 860, 880, 900, 920, 940, 960, 1710, 1730, 1750, 1770, 1790, 1810, 1830, 1850, 1870, 1890, 1910, 1930, 1950, 1970, 1990

See data sheet: GSM Specification RF Generator

Measurement

uncertainty

Unit

TX Generator level error at RF3 OUT (measurement on frequency cal. points)

Frequency MHz

Level in dBm

Tolerance See data sheet:

10, 100, 200, 300, 400, 500, 600, 700, 800, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, , 2100, 2200, 2300, 2400, 2500, 2600, 2700

+5, –18, –36, –50, –72, –80, –90 +5, –18, –36, –50, –72, –80, –90

Base Unit RF Generator

820, 840, 860, 880, 900, 920, 940, 960, 1710, 1730, 1750, 1770, 1790, 1810, 1830, 1850, 1870, 1890, 1910, 1930, 1950, 1970, 1990

See data sheet: GSM Specification RF Generator

RX Power meter (frequency selective) level error at RF1 (measurement on frequency cal. points)

Frequency in MHz

Level in dBm

Tolerance See data sheet:

50, 100, 200, 300, 400, 500, 600, 700, 800, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, , 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700

+47, +40, +33, +30, +25, +20, +15, +10, +6, 0, –5, –10, –15, –20, - 25, –30, –35, –40

Note: P = –40 dBm is valid for f = 50 MHz to 2200 MHz only

Base Unit RF Analyzer

450, 470, 490, 820, 840, 860, 880, 900, 920, 940, 960, 1720, 1740, 1760, 1780, 1800, 1820, 1840, 1860, 1880, 1900, 1920, 1940, 1960, 1980

+47, +40, +33, +30, +25, +20, +15, +10, +6, 0, –5, –10, –15, –20, - 25, –30, –35, –40

Note: P = –40 dBm is valid for f = 50 MHz to 2200 MHz only

See data sheet: GSM Specification RF Analyzer

1100.4903.82 1.34 E–4

CMU Test Report

RX Power meter (frequency selective) level error at RF2 (measurement on frequency cal. points)

Frequency in MHz

Level in dBm

Tolerance See data sheet:

50, 100, 200, 300, 400, 500, 600, 700, 800, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, , 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700

+33, +26, +19, +16, +11, +6, +1, –4, –8, –14, –19, –24, - 29, –34, –39, –44, –49, –54

Note: P = –54 dBm is valid for f = 50 MHz to 2200 MHz only

Base Unit RF Analyzer

450, 470, 490, 820, 840, 860, 880, 900, 920, 940, 960, 1720, 1740, 1760, 1780, 1800, 1820, 1840, 1860, 1880, 1900, 1920, 1940, 1960, 1980

+33, +26, +19, +16, +11, +6, +1, –4, –8, –14, –19, –24, –29, –34, –39, –44, –49, –54

Note: P = –54 dBm is valid for f = 50 MHz to 2200 MHz only

See data sheet: GSM Specification RF Analyzer

RX Power meter (frequency selective) level error at RF4 IN (measurement on frequency cal. points)

Frequency in MHz

Level in dBm

Tolerance See data sheet:

50, 100, 200, 300, 400, 500, 600, 700, 800, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, , 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700

0, –6, –9, –14, –19, –24, –29, –33, –39, –44, –49, –54, –59, –64, –69, –74, –80

Note: P = –80 dBm is valid for f = 50 MHz to 2200 MHz only

Base Unit RF Analyzer

450, 470, 490, 820, 840, 860, 880, 900, 920, 940, 960, 1720, 1740, 1760, 1780, 1800, 1820, 1840, 1860, 1880, 1900, 1920, 1940, 1960, 1980

0, –6, –9, –14, –19, –24, –29, –33, –39, –44, –49, –54, –59, –4, –69, –74, –80

Note: P = –80 dBm is valid for f = 50 MHz to 2200 MHz only

See data sheet: GSM Specification RF Analyzer

RX Power meter (wideband) level error at RF1 (measurement on frequency cal. points)

Frequency in MHz

Level in dBm

Tolerance See data sheet:

50, 100, 200, 300, 400, 500, 600, 700, 800, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, , 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700

+47, +40, +33, +30, +25, +20, +15, +10 Note: P> +33 dBm is calibrated from 800 MHz to

2000 MHz only;

Base Unit RF Analyzer

450, 470, 490, 820, 840, 860, 880, 900, 920, 940, 960, 1720, 1740, 1760, 1780, 1800, 1820, 1840, 1860, 1880, 1900, 1920, 1940, 1960, 1980

+47, +40, +33, +30, +25, +20, +15, +10 Note: P> +33 dBm is calibrated from 800 MHz to

2000 MHz only; See data sheet:

Base Unit RF Analyzer

RX Power meter (wideband) level error at RF2 (measurement on frequency cal. points)

Frequency in MHz

Level in dBm

Tolerance See data sheet:

50, 100, 200, 300, 400, 500, 600, 700, 800, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, , 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700

+33, +26, +19, +16, +11, +6, +1, –4 +33, +26, +19, +16, +11, +6, +1, –4

Base Unit RF Analyzer

450, 470, 490, 820, 840, 860, 880, 900, 920, 940, 960, 1720, 1740, 1760, 1780, 1800, 1820, 1840, 1860, 1880, 1900, 1920, 1940, 1960, 1980

See data sheet: Base Unit RF Analyzer

RX Power meter (wideband) level error at RF4 IN (measurement on frequency cal. points)

Frequency in MHz

Level in dBm

Tolerance See data sheet:

50, 100, 200, 300, 400, 500, 600, 700, 800, 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, , 2000, 2100, 2200, 2300, 2400, 2500, 2600, 2700

0, –6, –9, –14, –19, –24, –29 0, –6, –9, –14, –19, –24, –29

Base Unit RF Analyzer

450, 470, 490, 820, 840, 860, 880, 900, 920, 940, 960, 1720, 1740, 1760, 1780, 1800, 1820, 1840, 1860, 1880, 1900, 1920, 1940, 1960, 1980

See data sheet: Base Unit RF Analyzer

1100.4903.82 1.35 E–4

Test Report CMU

Options for CMU200: CMU-K20, K21, K22, K23, K24, TX Generator GSM Modulation

Output RF3 OUT, level 10 dBm, GSM Non Signaling Training Sequence GSM0, Bit Modulation PRBS, Transmission Burst

K20 TX GSM phase error

at 460 MHz, peak

K20 TX GSM phase error

at 460 MHz, rms

K20 TX GSM frequency error

at 460 MHz

K20 TX GSM phase error

at 496 MHz, peak

K20 TX GSM phase error

at 496 MHz, rms

K20 TX GSM frequency error

at 496 MHz

K21 TX GSM phase error

at 921 MHz, peak

K21 TX GSM phase error

at 921 MHz, rms

K21 TX GSM frequncy error

at 921 MHz

K21 TX GSM phase error

at 960 MHz, peak

K21 TX GSM phase error

at 960 MHz, rms

K21 TX GSM frequency error

at 960 MHz

K22 TX GSM phase error

at 1805 MHz, peak

K22 TX GSM phase error

at 1805 MHz, rms

K22 TX GSM frequency error

at 1805 MHz

K22 TX GSM phase error

at 1880 MHz, peak

K22 TX GSM phase error

at 1880 MHz, rms

K22 TX GSM frequency error

at 1880 MHz

K23 TX GSM phase error

at 1930 MHz, peak

K23 TX GSM phase error

at 1930 MHz, rms

K23 TX GSM frequency error

at 1930 MHz

K23 TX GSM phase error

at 1990 MHz, peak

K23 TX GSM phase error

at 1990 MHz, rms

K23 TX GSM frequency error

at 1990 MHz

GSM Modulation

–4+4 ° X

–1+1 ° X

–15 +15 Hz X

–4+4 ° X

–1+1 ° X

–15 +15 Hz X

–4+4 ° X

–1+1 ° X

–15 +15 Hz X

–4+4 ° X

–1+1 ° X

–15 +15 Hz X

–4+4 ° X

–114 ° X

–15 +15 Hz X

–4+4 ° X

–1+1 ° X

–15 +15 Hz X

–4+4 ° X

–1+1 ° X

–15 +15 Hz X

–4+4 ° X

–1+1 ° X

–15 +15 Hz X

1100.4903.82 1.36 E–4

CMU Test Report

K24 TX GSM phase error

at 869 MHz, peak

K24 TX GSM phase error

at 869 MHz, rms

K24 TX GSM frequency error

at 869 MHz

K24 TX GSM phase error

at 894 MHz, peak

K24 TX GSM phase error

at 894 MHz, rms

K24 TX GSM frequency error

at 894 MHz

–4+4 ° X

–1+1 ° X

–15 +15 Hz X

–4+4 ° X

–1+1 ° X

–15 +15 Hz X

Options for CMU200: CMU-K20, K21, K22, K23, K24, RX Analyzer GSM Demodulation

Input RF2, GSM Non Signaling Training Sequence GSM0, Trigger Source IF Power, Trigger Level Medium

K20 GSM phase error RX

at 450 MHz, peak, level +5 dBm

K20 RX GSM phase error

at 450 MHz, rms, level +5 dBm

K20 RX GSM frequency error

at 450 MHz, level +5 dBm

K20 RX GSM phase error

at 486 MHz, peak, level –14 dBm

K20 RX GSM phase error

at 486 MHz, rms, level –14 dBm

K20 RX GSM frequency error

at 486 MHz, level –14 dBm

K21 RX GSM phase error

at 876 MHz, peak, level +5 dBm

K21 RX GSM phase error

at 876 MHz, rms, level +5 dBm

K21 RX GSM frequency error

at 876 MHz, level +5 dBm

K21 RX GSM phase error

at 915 MHz, peak, level –14 dBm

K21 RX GSM phase error

at 915 MHz, rms, level –14 dBm

K21 RX GSM frequency error

at 915 MHz, level –14 dBm

K22 RX GSM phase error

at 1710 MHz, peak, level +5 dBm

K22 RX GSM phase error

at 1710 MHz, rms, level +5 dBm

K22 RX GSM frequency error

at 1710 MHz, level +5 dBm

K22 RX GSM phase error

at 1785 MHz, peak, level –14 dBm

K22 RX GSM phase error

at 1785 MHz, rms, level –14 dBm

RX Demodulation

–2+2 ° X

–0.6 +0.6 ° X

–10 +10 Hz X

–2+2 ° X

–0.6 +0.6 ° X

–10 +10 Hz X

–2+2 ° X

–0.6 +0.6 ° X

–10 +10 Hz X

–2+2 ° X

–0.6 +0.6 ° X

–10 +10 Hz X

–2+2 ° X

–0.6 +0.6 ° X

–10 +10 Hz X

–2+2 ° X

–0.6 +0.6 ° X

1100.4903.82 1.37 E–4

Test Report CMU

K22 RX GSM frequency error

at 1785 MHz, level –14 dBm

K23 RX GSM phase error

at 1850 MHz, peak, level +5 dBm

K23 RX GSM phase error

at 1850 MHz, rms, level +5 dBm

K23 RX GSM frequency error

at 1850 MHz, level +5 dBm

K23 RX GSM phase error

at 1910 MHz, peak, level –14 dBm

K23 RX GSM phase error

at 1910 MHz, rms, level –14 dBm

K23 RX GSM frequency error

at 1910 MHz, level –14 dBm

K24 RX GSM phase error

at 824 MHz, peak, level +5 dBm

K24 RX GSM phase error

at 824 MHz, rms, level +5 dBm

K24 RX GSM frequency error

at 824 MHz, level +5 dBm

K24 RX GSM phase error

at 849 MHz, peak, level –14 dBm

K24 RX GSM phase error

at 849 MHz, rms, level –14 dBm

K24 RX GSM frequency error

at 849 MHz, level –14 dBm

RX Demodulation

–10 +10 Hz X

–2+2 ° X

–0.6 +0.6 ° X

–10 +10 Hz X

–2+2 ° X

–0.6 +0.6 ° X

–10 +10 Hz X

–2+2 ° X

–0.6 +0.6 ° X

–10 +10 Hz X

–2+2 X

–0.6 +0.6 X

–10 +10 Hz X

1100.4903.82 1.38 E–4

CMU Manual Adjustment

2 Adjustment

The following chapter describes the manual adjustment of the reference sources as well as the software-controlled adjustment of individual module data following module replacement (automatic adjustment of module data).

The manual adjustment of the +5 VDC ref erence source which provides the highly stable DC reference voltage for the individual CMU modules as well as that of the 10 MHz refe rence f requency source which determines the frequency accuracy of the CMU are desc ribed. The adjustm ent perm its to m aintain and restore the data integrity of the instrument.

Manual adjustments must be perfor m ed at an am bient tem perature between +23°C and +30°C after the instrument has warmed up.

After the software-controlled adj ustment has been perform ed, the CMU is ready for use and offers full data integrity except for the level accuracy. In order to attain the level accuracy specif ied in the data sheet, it is necessary to record the path error data. T o this end, the CMU must be tes ted using the test system ACS 100 (see chapter 1, Performance Test).

Manual Adjustment

In the following, the measuring instrum ents and auxiliary means required for the manual adjustment of the CMU, the appropriate preparations of the instrum ent as well as the individual adjustments will be explained.

Measuring Instruments and Auxiliary Equipment

Table 2-1 Measuring instruments and auxiliary equipment for manual adjustment of the CMU

Item Type of

instrument

1 Voltmeter DC measurement URE3 350.5315.03

2 Spectrum analyzer

with frequency counter

Required

characteristics

Frequency measurement up to 1 GHz

Appropriate device R & S order

number

FSE 1066.3010.20

(30)

Use

page

1100.4903.82 2.1 E-4

Manual Adjustment CMU

Preparing the Instrument

Opening the casing:

Note:

½ Remove the power plug on the CMU and place the CMU onto the

front handles.

½ Loosen the four Phillips screws at the four rear-panel feet and

take off the feet.

½ Pull off the instrument tube towards the top. ½ Locate the adjustment devices (see chapter 5, drawing

1100.0008.01 D page 3).

½ After performing the m anual adjustment, close the casing again

in the reverse order.

If only the Option OCXO REFERENCE OSC. CMU-B11/B12 is to be adjusted, it is not necessary to open the c omplete tube of the CMU. The adjustment can be made from outside through the ventilation holes using a small screwdriver (see chapter 5, drawing

1100.0008.01 D page 3).

Adjusting the + 5 VDC Reference Voltage

Preparation: ½ Connect the DC voltmeter test cable to the SMB plug X221 (see

chapter 5, drawing 1100.1027.01 page 1) on the motherboard.

½ Switch on the CMU and allow it to warm up for approx. 5 minutes.

Adjustment: ½ Use potentiometer R120 on the REFERENCE BO ARD to adjust

the measured value at the DC voltmeter to + 5.000 V ± 1 mV.

1100.4903.82 2.2 E-4

CMU Manual Adjustment

Adjusting the 10 MHz Reference Frequency

Preparation:

Note:

TCXO

Adjustment:

Note:

The measurem ent can be performed either at connector REFO UT1 (rear of CMU) at 10 MHz or at connector RF3OUT (front) at 1 GHz using a frequency counter.

½ For the measurement at connector RF3OUT set the generator to

1 GHz and 13 dBm without modulation in the RF menu. For the adjustment, the CMU must be set to internal reference

source.

½ This setting is to be selected in the sync menu of the respective

application.

The measurement at 1 GHz can be performed with a lower fr equency counter resolution (1 Hz) in order to achieve a faster adjustment.

½ Use potentiometer R121 on the REFERENCE BO ARD to adjust

the measured value at the frequency counter to

10.000 000 0 MHz ± 0.5 Hz (at REFOUT1) or

1.000 000 000 GHz ± 50 Hz (at RF3OUT).

This adjustment is only required if none of the options CMU-B11 or B12 is installed.

OCXO REFERENCE OSC. CMU-B11

(if option is installed) Adjustment:

Note:

OCXO REFERENCE OSC. CMU-B12

(if the option is installed) Adjustment:

½ Use potentiometer R5 on the OCXO REFERENCE OSC.

The CMU must have been switched on for at least 5 minutes so that the OCXO has warmed up.

½ Use potentiometer R5 on the OCXO REFERENCE OSC.

BOARD to adjust the measured value at the frequency counter to

10.000 000 00 MHz –0.1/ +0.05 Hz (at REFOUT1) or

1.000 000 000 GHz –10 Hz/ +5 Hz (at RF3OUT) (a lead of at least –2 to –5 Hz at 1 GHz is desired because of

aging).

BOARD to adjust the measured value at the frequency counter to

10.000 000 00 MHz –0.1/ +0.05 Hz or (at REFOUT1) or

1.000 000 000 GHz –10 Hz/ +5 Hz (at RF3OUT) (a lead of at least –2 to –5 Hz at 1 GHz is desired because of

aging).

Notes:

1100.4903.82 2.3 E-4

The CMU must have been switched on for at least 10 minutes s o that the OCXO has warmed up. During the adjustment, operate the CMU in the horizontal position!

Automatic Adjustment of Module Data CMU

Automatic Adjustment of Module Data

In order to match the data stored in EEPROMs on the respective m odules to the complete instr ument, an automatic adjustment of module data is always necessary after replacing a module.

In addition to some standard infor mation such as module name, ser ial number, hardware status and date of manufacture, thes e stored data items contain impor tant pieces of infor m ation within value tables from module pre-testing, e.g. frequency responses for module error data.

This information perm its to make the complete instrument ready for operation again (see also chapter 1, Performance Test).

In the following, the preparations and the procedure of the automatic module data adjustm ent will be explained.

Preparing the adjustment

Replacement of module(s): ½ Replace the faulty module(s) (see chapter 3, module replace-

ment).

½ Close the CMU casing (see chapter 3, module replacement). ½ Connect the CMU to the mains and switch on.

Performing the adjustment

Starting the version manager: ½ Note the startup in the display when switching on the CMU for the

first time.

½ When a beep can be heard three times, press the MENU

SELECT key.

The version manager is started (see also chapter 4, Firmware Update). The display includes the menu item FIRMWARE UPDATE AFTER BOARD CHANGE.

Procedure: ½ Press the softkey to the left of the above mentioned menu item.

The automatic adjustm ent of module data is started under software control.

It may take a few minutes to additionally perform firm ware updates for microprocessors and programmable devices.

After the adjustment has been terminated, press the softkey to the left of the EXIT menu item, the operating software starts and the CMU is ready for use and can be operated in the usual way.

1100.4903.82 2.4 E-4

CMU Instrument Design and Function Description

3 Repair

This chapter describes the design of the CMU, simple measures for repair and troubleshooting and, in particular, the replacement of modules. For troubleshooting and diagnosis, a maintenance menu is available, which permits to poll diagnostic voltages of the modules and indicate limit violations.

The installation of options and software update are explained in chapter 4 of this service manual.

Instrument Design and Function Description

Instrument design

Cabinet design

Note: The terms "left" and "right" in the manual always refer to the front view of the instrument.

A detailed overview of the CMU design will be presented with the block diagram below and the exploded views (see chapter 5).

The following function description of the instrument refers to the block diagram.

The casing of the CMU is a robust, gray-blue Rohde & Schwarz standard casing according to BW 2000.

It consists of a fram e with integrated rear panel and a labeling panel at the front of the frame. The frame is covered by a one-piece tube and screwed with four rear-panel feet. T wo front handles are screwed to the frame as standar d, a further handle on the left side can be provided as accessory.

The dimensions are as follows: Overall: W*H*L 465 mm * 193 mm * 517 mm Rackmount: W*H 1/1 of 19 inch * 4 units

1100.4903.82 3.1 E-4

Instrument Design and Function Description CMU

Block diagram

MAINS

MICRO PROC.

FPGA 1

SPEECH CODEC CMU-B52

DSP MODULE 3

IQOUT MODULE

AUC MODULE 1 TXDSP MODULE 1

IF3TX1

IQ MOD

13.85MH z LO

FPGA LINK

ADC MODULE 1 DDC MODULE 1

A D

DDC

FAN

POWER SUPPLY

UNIV. SIGN. UNIT 1 CMU-B21

DSP MODULE 1

DSP MODULE 0

DIGITAL BOARD

DSP

FPGA ATDSP

2*12

DSP

FIFO

FPGA 2

2*12

NETCLK2 21 to 8 4 M H z

NETCLK1 21 to 8 4 M H z

110.8M3

110.8M2

110.8M1

INTERFACES

Option

Sandwich Modul

OCXO REFERENCE OSC. CMU-B11/12

REFERENCE BOARD

DIV

2/4

DIV

2/4

XTAL

110.8 MHz

OCXO

VCO

84 to

DDS

DIV 3

FAN

168MHz

VCO

84 to

168MHz

DDS

IF3RX1

FRONTMODUL

RXTX BOARD 1

IF1 842.08MHz /1817.12 MHZ

LO1 RXLO2

IF1 843.085MHz /1816.115 MHZ

TR-CORRECTION MODULE

LO3 RX

LO3 TX

IF2 487.52MHZIF3 13.85MHZ

IF2 486.515MHZIF3 10.7MHZ

HARDDISK

FRONT MODUL CONTROLLER

LC DISPLAY

VAR/KEYBOARD

Attenuator

LO1 TX

Attenuator

RFTX1

RFRX1

R120

TCXO 10MHz

RFRXTXAUX1

RFRXTXAUX2

R121

RFTX2

RFRX1

+5VREF

RFRX2

RFTX1

FAN

PCMCIA INTERFACE

FAN

R4IN

RF FRONTEND

RF3OUT

INTERFACES

RF2

RF1

Speaker

1100.4903.82 3.2 E-4

CMU Instrument Design and Function Description

Instrument Frame

The instrument f rame cons ists of fr ont fram e, module support, partition, c age and air duct. The module support is screwed to the front frame. It incorporates the partition, the cage and the air duct and provides all mechanical connectors and slots for modules. The MOTHERBOARD for electrical connection of the modules as well as the big fan for cooling the m odules are screwed to the instrum ent frame.

Rear of Instrument Frame

At the rear of the CMU instrument frame, the power supply with integrated power plug and switch as well as other important electrical interfaces are fitted (see chapter 1, operating manual). The power supply unit can be easily replaced. A further rear panel that is scr ewed to the frame serves as support for further electrical interfaces and optional extensions.

Front of Instrument Frame

The front of the instrument frame incorporates the FRONT MODULE, the most important electrical interfaces as well as the optional FLOPPY DISK or PCMCIA INTERFACE drive.

FRONT MODULE

Electrical interfaces

Loudspeaker

The components of the FRONT MODULE that ar e directly arranged at the front of the CMU are the LCD and the operating keys with the spinwheel. The operating keys consist of a m em brane and a m at inserted into the keyboard frame of the FRONT MODULE. The operating keys are colored differently to highlight their function and partly labeled. This module can be conveniently replaced as a unit.

The beeper with sound outlet on the FRONT MODULE is used for acoustic prompts and error warnings.

The electrical interfac es are mounted on an extra mounting plate. T he RF interfaces are components of the RF FRONTEND.

A loudspeaker with sound outlets at the labeling panel allows for acoustic hints for AF s ignals. It is controlled via the option CMU-B41 AUDIO-GEN. + ANA.

1100.4903.82 3.3 E-4

Instrument Design and Function Description CMU

Cooling the Instrument

Axial fan in the casing

Axial fan of power supply

Axial fan of FRONT MODULE

Axial fan of RF FRONTEND

The right side panel contains a temperature-controlled axial fan (120 mm x 120 m m x 38 mm ), which sucks in cold am bient air at the right tube of the casing and blows it through the modules via a ventilation duct and further ventilation slots. T he amount of air is contr olled via the width of the slots depending on the power dissipation of the module. The modules are cooled by the air flow, and the heated air is then blown out at the left side panel.

In addition, the power supply of the CMU is equipped with its own temperature-controlled axial fan (80 mm x 80 mm x 25 mm) with a separate air circulation. The fan sucks in cold air on the left rear side of the power supply casing and blows out the heat produced in the power supply on the right rear side of the power supply casing.

For cooling the controller board, the FRONT MODULE is pr ovided with its own axial fan (40 mm x 40 mm x 10 mm), which sucks in cold ambient air on the left side of the instrument and blows it out at the right side panel.

The RF FRONTEND which can process powers up to 50 W is equipped with an aluminum casing with its own air duct, cooling fins and a temperature-controlled axial fan (40 mm x 40 mm x 20 mm), which dissipates the heat by sucking in cold air directly on the right rear side of the instrument and blowing in out again on the right front s ide of the instrument.

The cooling concept makes sure that all components are optimally cooled so that the complete instrument achieves a high MTBF.

1100.4903.82 3.4 E-4

CMU Instrument Design and Function Description

FRONT MODULE

The FRONT MODULE c onsists of an alum inum c ase panel and a m ounting plate which ac com m odates the LCD, the keyboard mat with the membrane and the spinwheel. The case panel incorporates the FRONT MODULE CONTROLLER, the fan and the hard disk.

LCD

Operating keys

Spinwheel

The color LCD provides a visible output of any information, measurements etc. to the user. The resolution of the LCD is 640 * 480 pixels (VGA). The display incorporates two cold cathode tubes for the illumination. The high voltage required for this purpose is generated in an extra DC/AC converter mounted next to the display on the mounting plate and connected both to the display and the controller board via a cable. The liquid crystal display is controlled via a ribbon cable that is plugged in on the controller board.

The operating keys consisting of a keyboard mat and a membrane release a contact when the rubber key is pressed. T wo LEDs for the STANDBY/ON key (orange for STANDBY/green for ON) are also accommodated on this membrane. The rubber keys enable the user to call up all CMU functions.

The key evaluation and LED control are effected via a film cable connector on the controller board. Like the contr ol of the two LEDs, it is controlled in a special microprocessor on the controller board by means of a matrix technique. T his micr oprocessor perm its to store the status of the STANDBY/ON key when switching off using the power switch.

The spinwheel consists of a flexible magnetic ring with individual magnets for the lock-in positions. With each turn of the spinwheel, electrical pulses are released from the LEDs and the optical position detectors and sent via a ribbon cable to the microprocessor on the FRONT MODULE CONTROLLER for evaluation. The spinwheel serves the user as a further m eans of data entry and operation.

FRONT MODULE CONTROLLER

Hard disk

Fan

Connection

1100.4903.82 3.5 E-4

The FRONT MODULE CONTROLLER contains all the necessary components on a board such as proc ess or, m em ory chips, I/O devic es (ISA bus), lithium battery, IEC-bus controller (IEEE), two serial interfaces (COM1/2), a parallel interface (LPT), LCD graphics controller, external VGA monitor graphics interface (monitor) and an external keyboard connection (keyboard PS/2). In addition, a floppy controller for an external floppy disk drive and an IDE hard disk controller are integrated on the controller board.

The hard disk is s cr ewed to the pr inted c irc uit board above the F RO NT MODULE CONTROLLER (MODEL 04) or is screwed to the rear of the aluminum case panel (MODEL 12) and c onnected to the printed circ uit board via a ribbon cable.

A small axial fan in the case panel produces an air flow through the FRONT MODULE CONTROLLER, cooling it with cold ambient air.

The FRONT MODULE is directly plugged to the MOTHERBOARD via two 96-pin FUTURE BUS connectors (MO DEL 04) and one additional 110-pin PCI Bus connector (MODEL 12).

Instrument Design and Function Description CMU

POWER SUPPLY

The POW ER SUPPLY of the CMU consists of a two-part aluminum casing with three boards arranged in a so-called sandwich technique (U-shape). In addition to cooling, the axial fan already mentioned above (see cooling of instrument) is also used to support the three boards.

STANDBY/ON signal

Power Factor Correction (PFC) and Standby circuit

POWERGOOD - Signal

Overtemperature protection

AC voltage supply

The control signal STANDBY/ON contro lled by the FRONT MODULE CONTROLLER (depending on the operating key STANDBY/ON on the front of the instrument frame) activates the power supply.

The POWER SUPPLY is a primary clocked switching power supply with Power Factor Correction (PFC) and Standby circuit (+12 V Standby). On the secondary side, it generates all DC voltages (+3.3 V; +5.2 V; +6 V; +8 V; +12 V; +12 VFAN; +12 V Standby; +28 V; -12 V) for the CMU. The secondary voltages are open-circuit-proof and short-circuit-proof with respect to ground and each other.

When switching on and off (defined reset), the POWER SUPPLY generates a POWERGOOD signal for control of the FRO NT MO DULE CONTROLLER.

An overtemperature protective c ircuit is additionally installed to prevent overheating. This status is taken to the FRONT MODULE CONTROLLER via a status signal (OT).

A 3-pin connector with integrated 2-pin mains switch for connection with the AC-Supply is installed on the rear panel of the POWER SUPPLY. From there, the AC supply voltage is internally taken to the first board via two cables. Two fuses are also fitted there as a means of fire protection.

Primary side

Secondary side

Note: These fuses are not accessible to the user from outside and

are only blown in the case of a serious fault of the power supply (servicing required!).

The following circuit parts fo llow on the f irs t boar d: EMI f ilter and power rectifier. The rectified AC supply voltage is taken via a cable to the second board of the Power Factor Correction (PFC). This circuit converts the rectified AC supply voltage up to a constant voltage of 380 VDC. Then this voltage is taken to a step down converter which provides a constant voltage of 280 VDC f or the s ubsequent res onance step down converter, which chops it with approx. 35 kHz. An additional connecting cable is used to feed the big transformer located on the first board. It is provided with taps for the various secondary voltages, and the following rectifiers constitute the transition to the DC secondary side.

The +12 V-, -12 V- and +6 V- secondary voltages are provided with analog regulators in order to ensure a high spurious suppression. The +3.3 V- and +5.2 V- secondary voltages have their own stepdown converters to achieve small power dissipations. The +28 V- voltage requires a stepup converter in order to generate the high voltage with a high accuracy. At the +12 VFAN, a constant current source is used for efficient suppression of fan interference. The secondary voltages are then filtered and subsequently taken to the output connector.

1100.4903.82 3.6 E-4

CMU Instrument Design and Function Description

Standby converter and control unit

Connection

The third printed circuit board which serves as a connection between the first and second board accom modates the control and m onitoring circuit parts. Besides, it includes the standby converter, which generates a +12-V standby voltage from the 380 VDC voltage of the PFC circuit.

The POWER SUPPLY is directly connected to the MOTHERBOARD via a 96-pin FUTURE-bus connector on the MOTHERBOARD and screwed to the integrated rear panel of the CMU with its casing.

MOTHERBOARD

The MOTHERBOARD consists of five individual printed circuit boards: MOTHERBOARD1, MOTHERBOARD2, FRONTPANEL BOARD, REARPANEL BOARD1 and REARPANEL BOARD2.

MOTHERBOARD1

The MOTHERBOARD1 is the central motherboard and serves as connection between most of the modules. It supplies the m odules both with voltages and control, status and bus signals in various layers ( 12layer multilayer). The MOTHERBOARD1 accom m odates various ISA bus driver devices for the PCMCIA INTERFACE control as well as protective circuits. These protective circuits consist of diodes and polyswitches (currentdependent, self-opening and closing fuses) and protect against external overvoltages of the interface signals. Nine LEDs indicate the status of the supply voltages and help with troubleshooting. On MOTHERBOARD1, a circuit f or temperatur e-dependent instrum ent fan control is also implemented: The individual module temperatures are polled by the FRONT MODULE CONTROLLER of the CMU. This inf ormation is passed on via the DIGITAL BOARD to the fan control with the aid of a control signal. The instrument fan is controlled such that an optimum m odule temperature is achieved on the one hand and as little noise as possible is emitted by the fan on the other hand.

MOTHERBOARD2

FRONTPANEL BOARD

REARPANEL BOARD1

1100.4903.82 3.7 E-4

The MOTHERBOARD2 serves for supply and connection of the modules located higher at the side, the REFERENCE BOARD and a further option. For connection with MOTHERBOARD1 two 50-pin ribbon cables are used.

The FRONTPANEL BOARD is located at the front of the instrument frame and accommodates the external interfaces DATA1, DATA2, AUX3 and SPEECH. Besides, the six LEDs for the dis play of the ac tive RF inputs/outputs are located there. For connection with MOTHERBOARD1 a 50-pin ribbon cable is used.

The REARPANEL BOARD1 is screwed to the integrated rear panel of the CMU below the POWER SUPPLY and accomm odates the external interfaces IEEE, LPT, COM1, COM2, monitor and keyboard. For connection with MOTHERBOARD1 two 34-pin ribbon cables are used.

Instrument Design and Function Description CMU

REARPANEL BOARD2

The REARPANEL BOARD2 is mounted to the right of the integrated and unscrewable rear panel plate and accommodates the interfaces SERVICE, AUX, AUX4 as well as further spare interfaces. For connection with MOTHERBOARD1 two 34-pin ribbon cables are used.

REFERENCE BOARD

The REFERENCE BOARD provides all required cloc k signals (NET CLK1/2) and reference frequencies (110.8 MHz) as well as the +5 VDC reference voltage for the CMU. The REFERENCE BOARD is a plug-in module in HVC design.

Design

Connection

REFERENCE frequency generation

At the top of the module, nine MMCX connectors are attached, which serve as inputs or outputs for various clock signals and are routed to the respective modules or the integrated rear panel with appropriate coax cables. Two holes in the HVC panel at the top are used for adjusting the +5 VDC reference voltage and the 10 MHz TCXO reference frequency.

The plug-in module REFERENCE BOARD is ins erted in the CMU on the right side on MOTHERBOARD2 using a 48-pin FUTURE-bus connector.

All frequencies provided by the CMU are derived from internal highprecision 10-MHz reference elem ents (TCXO or optional OCXO ) or f rom externally applied frequencies. A 110.8-MHz crystal oscillator is coupled in locked phase relation in a PLL loop with the selected reference. The reference element TCXO is used as standard on the reference board. If the option OCXO (CMU-B11 or -B12) is installed in the CMU, it is automatically used as reference element and the standard TCXO is switched off. It is additionally possible to switch over to external synchronization (see operating manual, 4.34 Connection Control-Synch.) and use the signal fed in at the BNC connector REFIN at the rear of the CMU as reference signal. At the BNC connector REFOUT1 at the rear of the CMU, either the internal 10-MHz reference frequency or the signal applied at REFIN can be buffered and tapped depending on the selected reference element. The 110.8-MHz sinewave signal of the crystal oscillator passes a harmonics filter, is buffered and provided at three MMXC connectors, serving as reference frequency for the RXTX BOARD1/2 and the DIGITAL BOARD. At a further MMCX connector, the T T L signal RESFREQ is available with

27.7 MHz (110.8 MHz / 4) for the option CMU-B41 AUDIO-GEN. + ANA. as clock signal.

Netclock generation

1100.4903.82 3.8 E-4

The REFERENCE BOARD is also used for netclock generation, providing adjustable TTL cloc k frequencies from 21 MHz to 84 MHz with a very fine frequency resolution of 0.1 Hz. This function is provided twice so that two independent netclock frequencies are available at the s ame time.

The signal generated by the 110.8-MHz crystal oscillator is divided by three and applied to a DDS circuit (Direct Digital Synthesis). The DDS circuit is used as a fine-adjustable frequency divider and generates a divided signal from 9 MHz to 12 MHz. This signal is then used in a fur ther PLL as nominal value f or the phase detector in order to tune a VCO (Voltage Controlled Oscillator) with a

CMU Instrument Design and Function Description

tuning range of 84 MHz to 168 MHz in locked phase relation. A fractional divider used in the feedback of the PLL provides the actual value for the phase detector.

The output signal of the VCO is divided by two or four, buffered and provided at the MMCX connector NETCLK 1 or NETCLK 2 and serves as network-specific TTL clock for the DIGITAL BOARD.

Option OCXO REFERENCE OSC. CMU-B11 or B12

This option consists of a printed circuit board with the reference elem ent OCXO (oven-controlled c rystal oscillator), the control circuit and a potentiometer for adjusting the OCXO.

Installation

Connection

The options CMU-B11 and B12 are basically of the same design. The two options only differ from eac h other in the technical data of the OCXO such as aging and frequency drift.

The option OCXO REFERENCE OSC. is installed on the right side below the instrument fan such that the potentiometer is easily accessible from outside without the need for opening the CMU tube.

The option OCXO is directly inserted via a 10-pin connector on the MOTHERBOARD and screwed to the module support by means of three screws.

RF FRONTEND

Design

Cooling system

The printed circuit board of the RF FRONTEND is installed in a silvercoated aluminum casing which is screwed to the instrument frame. The RF FRONTEND is fitted at the right fr ont of the CMU s uch that the four RF N-type connectors which are directly connected to the FRONTEND board are accessible on the front of the instrument fr ame of the CMU. This is absolutely necessary to ensure a good VSWR (Voltage Standing Wave Ratio).

The aluminum casing in which the RF FRONTEND is installed is equipped with cooling fins in a special cooling duct and an extra temperature-controlled fan f or heat dissipation if high RX power is fed in.

Control and supply

RF connectors

1100.4903.82 3.9 E-4

Control and supply of the RF FRONTEND are effected from MOTHERBOARD1 via a 34-pin ribbon cable.

For the internal RF connection to the RXTX BOARD1 (RFRX1, RFTX1) two SMA screw connections and coaxial solid-jacket cables are used. Thus a high-quality RF connection is ensured. Besides, two further internal RF connections (RFRX2, RFT X2) to the optional RXTX BOARD2 are available.

Two bidirectional monitor inputs/outputs (RFRXTXAUX1/2) at the RF FRONTEND permit to connect further RF devices via optional cables leading to the integrated rear panel of the CMU. As external RF interface, the RF FRO NT END is equipped with the f our N-type connectors RF1, RF2, RF3OUT, RF4IN, which permit to

Instrument Design and Function Description CMU

perform all the RF measurements of the CMU. RF1 and RF2 are bidirectional inputs/outputs depending on the setting and measurement application. RF3OUT is a unidirectional output. RF4IN is a unidirectional input.

Optical indication

Functions

For optical indication of the selected N-connectors and input and/or output functions, yellow LEDs located above the N-connectors are switched on.

On the transmitter side (TX), the RF F RONTEND serves the purpose of distributing internal RF signals to the outside to the various Nconnectors (RF1, RF2, RF3OUT) and attenuate or amplify them according to the selected output and level. On the receiver side (RX), its purpose is to internally distribute ex ternal RF signals from the dif ferent N-connectors (RF1, RF2, RF3OUT ) and attenuate or amplify them according to the selected input and the applied level. Since high levels and powers up to 50 W can be f ed in on the receiver side (RX), the RF FRONTEND is equipped with power attenuators and the cooling system with the fan described above, which is contr olled by the temperature at the power attenuators. The RF FRONTEND additionally features two broadband power measuring diodes, which perm it to measure the power applied at the N-connectors RF1, RF2, RF4IN even in pulsed operation.

RXTX BOARD1

The RXTX BOARD1 c ons titutes the c entr al RF boar d which contains all c irc uit parts f or c onvers ion f r om RF to IF both for the transmitter (TX) and receiver (RX).

Design

Cooling system

Control and supply

Complete function

Transmitter functions

The RXTX BOARD1 is des igned as plug- in module with a silver-coated two-shell aluminum casing fixed with several screws.

This casing is equipped with cooling fins at the front and rear which are provided with a cover sheet each so that two special c ooling ducts are produced. These cooling ducts ar e evenly cooled by the air flow of the instrument fan irrespective of neighboring modules. This efficient cooling is required since a very high degree of integration and a large portion of fast RF com ponents are implemented on this board.

Control and voltage supply of the RXTX BOARD1 are effected via a 96-pin FUTURE-bus connector from MOTHERBOARD1.

For conversion from RF to IF, the transm itter side (T X) is im plem ented on one side of the multilayer PC board and the receiver side (RX) on the other side on the RXTX BOARD1. This strict separation of the functions permits to achieve high decouplings as they can usually only be achieved with two separate modules.

On the transmitter side (T X), an IF s ignal with 13.85 MHz is applied at the MMCX connector IF3TX1 ( top of module) of the RXTX BO ARD1, which is provided by the DIGITAL BOARD. On the RXTX BOARD1, this signal is taken via various amplifier stages, attenuator pads and filters and finally set to the desired RF

1100.4903.82 3.10 E-4

CMU Instrument Design and Function Description

frequency by means of triple signal conversion (IF3, IF2, IF1). This is necessary to obtain a high image-frequency rejection.

At the TX output, a switchable attenuator with fine stepping and large attenuation range is used to set the RF signal am plitude according to the level selected.

The RF signal is finally taken to the RF FRONTEND at the SMA connector RFTX1 (bottom of module).

The transmitter s ide is provided with an extra LO1T X (Local Oscillator ) with large tuning range and very fine frequency resolution used for setting the desired transmitter frequency, an LO2 fixed-frequency oscillator shared with the receiver side and an extra LO3T X with small tuning range. All LOs are synchronized by the MMCX connector

110.8MHz at the bottom of the module with the reference frequency from the REFERENCE BOARD. Besides, an MMCX connector at the top of the RXTX BOARD1 is designed as input with the second transmitter IF (RESIF2TX) which is activated via software switches.

Receiver functions

On the receiver side (RX), the RF s ignal is f ed in at the SMA c onnector RFRX1 (bottom of module) of the RXTX BOARD1 which is pr ovided by the RF FRONTEND. On the RXTX BOARD1, this signal is taken via a switchable attenuator with fine stepping and large attenuation range in order to match the level according to the level applied. Subsequently, this signal is converted to an IF frequency of 10.7 MHz by means of triple signal conversion (IF1, IF2, IF3) and several filter and amplifier stages and provided at the MMCX connector IF3RX1 (top of module) for the DIGITAL BOARD. This procedure is necessary to achieve a high image-frequency rejection and a high dynamic range with a simultaneously high intermodulation suppression. For the receiver side, an extra LO1RX ( local os cillator) is provided with a large tuning range and a very fine frequency resolution used for setting the receive frequency, an LO2 fixed-frequenc y oscillator shared with the transmitter and an extra LO3RX with a very small tuning range. All LOs are synchronized by the MMCX connector 110.8 MHz at the bottom of the module with the reference frequency from the REFERENCE BOARD. A further MMCX connector RESIF3RX (top of module) provides a buffered RX IF signal of 10.7 MHz which is taken to the rear of the CMU via a coax cable. This signal output can be activated via a software swi tch. Besides, an MMCX connector at the top of the RXTX BOARD1 is designed as output with the second receiver IF (RESIF2RX) which can be activated via software switches.

Correction processor

1100.4903.82 3.11 E-4

The RXTX BOARD1 contains an ex tra correction processor with large flash PROM. It controls all the static and dynamic settings on the RXT X BOARD1 and, as a special feature, also the attenuator pads and amplifiers of the RX and TX attenuator on the RF FRONTEND. Besides, the correction processor permits to read out the individual module error data from the EEPROMS of the respective m odules in a so-called correction procedure (automatic module data adjustment) and calculate the deviations for all possible signal paths. These

Instrument Design and Function Description CMU

deviations are stored as correction values in the flash PROM. The correction processor then sets the desired level settings, corrected by the correction values, in the flash PROM so that frequency, linearity and temperature responses of the modules are compensated for. This ensures the excellent level accuracy of the CMU which is essential for most measurements.

Extension

The CMU 200 can be extended by a RXTX BOARD2 and thus provide a second complete transmit and receive channel.

DIGITAL BOARD

The DIGITAL BOARD constitutes the central contr ol and measurement board which c ontains all circuit parts for conversion and further processing of the analog IF (receiver side) into digital I/Q values. On the transmitter side, analog as well as digital I/Q values are modulated upon the c arr ier and pr ovided as analog IF.

Design

Cooling system

Control and supply

The DIGITAL BOARD is designed as HVC 200 plug-in module. The HVC 200 cabinet is equipped with a screwed-on cover both at the front and rear to ensure optimum electrical shielding of the module.

The casing is provided with ventilation holes on the right and left in order to produce a large cooling flow through the m odule by means of the instrument fan. This efficient cooling is necessary, since a great number of highly integrated fast digital devices is used on the m odule and up to eight sandwich modules can additionally be fitted so that the board is densely packed.

The control, bus lines and voltage supply of the DIGIT AL BOARD are effected via four 96-pin and one 48-pin FUTURE-bus connectors from MOTHERBOARD1.

Function

ADC MODULE1

1100.4903.82 3.12 E-4

As standard, the four sandwich boards ADC Module1, DDC Module1, TXDSP Module1 and AUC Module1 are fitted. On the DIGITAL BOARD, all necessary clocks are generated and provided from the netclocks 1 and 2 in a clock conditioning and distribution circuit. These c lock s are r equired fo r s am pling, f iltering and down converting the digital IF internally and for the UNIVERSAL SIGNALLING UNIT MODULE. Besides, two programmable logic devices (FPGA) are used on the DIGITAL BOARD, which provide address decoding, interrupt control and host interfaces between ISA bus and internal circuit parts (DDC/TXDSP) as well as the control of the RF FRONTEND (via FEI Bus), the REFERENCE BOARD and AUDIO BOARD (via buffered ISA bus) and the RXTX BOARD1 (via s erial bus). Further s erial interfaces lead from the programmable logic devices to the UNIVERSAL SIGNALLING UNIT1 and vice versa. An AD converter on the DIGITAL BOARD is used for polling the diagnostic voltages of the CMU modules, which can indicate module states and errors.

The sandwich ADC MODULE1 is connected to the DIGIT AL BOARD via a multipoint connector. In addition, it is s crewed to a solid ground block to obtain a good ground connection. The ADC MODULE1 receives the analog IF (10.7 MHz) from the RXTX

C-

CMU Instrument Design and Function Description

BOARD1 directly via a MMCX connector (IF3RX1) and c onverts it into a 12-bit data stream by means of a fast AD converter.

DDC MODULE1

TXDSP MODULE1

AUC MODULE1

Extension

The sandwich DDC MODULE1 is directly plugged onto the DIGITAL BOARD via three multipoint connectors and processes the digital data stream of the receiver. In a special ASIC chip, the I/Q shaping, the matching of the data rate and the respective filtering (bandwidth shaping) of the digital data stream are produced. Then follows a DSP (RX DSP) with further evaluation of the digital I/Q data for measurement purposes. Besides, the digital I/Q data are passed on via the MOTHERBOARD1 to the LINKHANDLER MODULE for evaluation.

The sandwich TXDSP MODULE1 is directly plugged onto the DIGITAL BOARD via two multipoint connectors. It contains the DSP on the transmitter side (TXDSP), which generates I/Q data according to the application and provides them to the AUC MODULE1 via two 12-bit D/A converters and several selection switches located on the DIGITAL BOARD.

The sandwich AUC MODULE1 is directly plugged onto the DIGITAL BOARD via a multipoint connector and serves the purpose of filtering the analog I/Q data from the TXDSP MO DULE1 or the LINKHANDLER MODULE depending on the position of the selection switches on the DIGITAL BOARD according to the application (bandwidth shaping) and converting it to the transmit IF (13.85 MHz) by means of an I/Q modulator. Subsequently, the transmit IF is routed via the MMCX connector (IF3TX1) on the DIGITAL BOARD to the RXTX BOARD1.

The DIGITAL BOARD can be extended by a further com plete receive and transmit channel consisting of ADC MODULE2, DDC MODULE2, TXDSP MODULE2 and AUC MODULE2.

Option UNIVERSAL SIGNALLING UNIT CMU-B21

The UNIV. SIGN. UNIT MODULE is the control and measurement module which contains all circuit parts for signaling and measuring network-specific parameters.

To this end, the digital I/Q data from the DIG ITAL BOARD are used on the receiver side (RX ) in order to calculate test parameters.

On the transmitter side, analog network-specific I/Q data are generated and provided to the AUC MODULE1 on the DIGITAL BOARD.

Design

Cooling system

The UNIV. SIGN. UNIT MODULE is des igned as plug-in module with two aluminum shell covers. It is equipped with a screwed-on alum inum cover both at the front and rear to allow f or optimal elec trical shielding of the module.

The casing is provided with ventilation holes on the right and left in order to produce a large cooling flow through the m odule by means of the instrument fan. This efficient cooling is necessary, since a great number of highly integrated fast digital devices is used on the module and up to seven sandwich modules can additionally be fitted so that the module is densely packed.

1100.4903.82 3.13 E-4

Instrument Design and Function Description CMU

Control and supply

Function

DSP MODULE

The control, bus lines and voltage supply of the UNIV. SIGN. UNIT MODULE are connected via two 96-pin VG multipoint c onnectors f rom MOTHERBOARD1. Further interfaces for testing and debugging are provided on the top of the module.

As standard, the UNIV. SIGN. UNIT MODULE contains the three sandwich boards DSP MODULE0, DSP MODULE1 and IQOUT MODULE. Besides, if a very high computing power is required, two f urther DSP MODULES (DSP MODULE2, DSP MODULE3) and the SHARED MEMORY can be fitted. Furthermore, a slot for the Option CMU-B52 SPEECH CODEC is provided. This option includes DSP MODULE3. A microprocessor with peripheral equipment and two programmable logic devices (FPGA ’XILINX1’ and ’XILINX2’) on the UNIV. SIGN. UNIT control all the processes on the module. An RS232 interface is available for debugging, data input and output. Besides, an ISA bus interface is installed for control and data communication with the FRONT MODULE CONTROLLER.

The two sandwich DSP MODULES (DSP MODULE0 and DSP MODULE1) are directly inserted on the UNIV. SIGN. UNIT via four multipoint connectors. Via a FIFO device, they receive the digital I/Q data from the DIGIT AL BOARD for evaluation. The signal can then be demodulated by the DSP MODULES and the demodulated data can be passed on the protocol engine running on the MC or a DSP MODULE. The DSP MODULES can also perfor m some measurements and the results are passed on via the ISA bus interface to the FRONT MODULE CONTROLLER. Likewise, the DSPs cause further ac tions on the transmitter side (TX) , e.g. change transmit frequency-settings via the FPGA ’XILINX2’ and output analog I/Q data via the IQOUT MODULE.

IQOUT MODULE

Option SPEECH CODEC CMU-B52

The sandwich IQOUT MODULE is direc tly inserted on the UNIV. SIGN. UNIT via three multipoint connectors and installed in an extr a shielding chamber, since it perform s the digital-to-analog conversion of the I/Q data.

The Option SPEECH CODEC CMU- B52 (including DSP MODULE3) is also designed as sandwich module and is directly plugged onto the UNIV. SIGN. UNIT via three multipoint connectors. This option perm its to read in and output analog speech signals (handsetin/out lines) via A/D and D/A converters.

1100.4903.82 3.14 E-4

CMU Instrument Design and Function Description

Option AUDIO-GEN. + ANA. CMU-B41

The Option AUDIO-GEN. + ANA. constitutes the central AF-board which contains all circuit parts for generation of AF output and analysis of AF input signals. T he Option AUDIO-GEN. + ANA. is a plug-in module in HVC design.

Design

Connection

Function

At the top of the module, eight MMCX connectors are attached, which serve as inputs or outputs for AF and c lock signals and are routed to the respective modules or the integrated front panel with appropriate coax cables. There is als o a c oax c able to the louds peaker on the f ront panel.

The plug-in module AUDIO-GEN. + ANA. is inserted in the CMU on the right side on MOTHERBOARD2 using a 96-pin FUTURE-bus connector.

The Option AUDIO-GEN. + ANA. contains one DSP MODULE, a clock generation circuit, an analog input section and an analog output section Further there is a power amplifier for the loudspeaker on this board The DSP MODULE is a sandwich module, which controls the signal path, level and frequency of the AF output generator and also the signal path, attenuation and analysis of the AF input analyzer. The DSP MODULE is connected via an ISA-Bus Interface to the FRONTMODULE CONTROLLER of the CMU. The clock generation circuit gets from the REFERENCE BOARD a

27.7MHz signal over a coax cable and a MMCX connector. This signal feeds the DSP MODULE and is converted in a PLL circuit to 24.576 MHz. Over a divider by 2 to. This clock signal divided by 2 (12.288MHz) is used for the A/D and D/A Converter IC and the serial links.

Analog Input Section

Analog Output Section

Over the BNC connectors AFIN and AUX1 at the fr ont of the CMU and the coax cables the AF signal comes to the analog input section, which provides two independent input channels. These two Input channels could be used as one balanced or two unbalanced channels. Over an input attenuator and an various gain amplifier per channel the AF signal comes to the A/D Conver ter, which sends over a serial link connection the digital values to the DSP MODULE.

For the AF-Generator the DSP MODULE sends the digital values over a serial link connection to the D/A Converter of the analog output section. The analog output section provides two independent output c hannels, which could be used as one balanced or two unbalanced channels. Over a various gain amplifier and a switchable output attenuator the AF signal comes to the MMCX c onnectors, which are connected via coax cables to the BNC connectors AFOUT and AUX2 at the front of the CMU.

1100.4903.82 3.15 E-4

Instrument Design and Function Description CMU

Option CDMA (IS95) Signalling Unit CMU-B81

The CDMA (IS95) Signalling Unit is a module of the CMU200 providing signalling and measuring support for the CDMA IS-95 cellular phone network.

With the use of analog and digital hardware and f irmware, this module uses the down converter and a signal generator in the CMU200 to establish a link with a CDMA mobile station.

Design

Cooling system

Control and supply

Function

CMU Platform

The CDMA (IS95) Signalling Unit is a plug-in module with a complete aluminum shell providing optimal electrical shielding of the module.

Ventilation holes on the right and left of the shell produces a large cooling flow through the module by means of the instrument fan.

The MOTHERBOARD 1 provides bus lines, the voltage supply, and controls the CDMA (IS95) Signalling Unit via two 96-pin connectors and one 48-pin connector. Further interfac es for testing and debugging are provided on the top of the module.

The CDMA (IS95) Signalling Unit contains the hardware for signal demodulation and signal generation of a CDMA s ystem. See Figure 3-1 for a simplified block diagram.

A micro processor with peripheral equipment and three progr amm able logic devices (Xilinx 1, 2, and 3) on the board control all the processes on the module.

An RS232 interface is available for debugging and data input and output. An AT-bus interface is used for control and data communication with the

front module computer.

FrontEnd

Board

RxTx

Board

Digital

Up / Down

Conversion

Dig. I & Q

Measurement

DSP

System Clock

Generation

CMU ControllerFront / Rear Panel

External

Interfaces

Expansion Interfaces

LinkHandler

Processor / Memory

CDMA LinkHandler

CMU

Internal

Interfaces

Internal

Interfaces

Vocoder

Interface

CDMASupport

CDMA

Demodulation

CDMA Signal

Generation

AWGN

Generator

Output Signal

Conditioning

Synchronization

Clock / Trigger

System

Triggers

NetClock

Figure 3-1: CDMA (IS95) Signalling Unit block diagram

1100.4903.82 3.16 E-4

CMU MODULE Replacement

MODULE Replacement

Caution!

Disconnect the instrument from the mains before opening the c asing. Please note the safety instructions at the beginning of this manual.

When mounting the tube take care not to damage or pull off cables.

Replacing the FRONT MODULE

(see chapter 5, spare part list, Current No. 270/275, and explosion drawing 1100.0008.01 D sheet 2) For replacement proceed as follows:

Opening the instrument and removing the FRONT MODULE

½ Switch off the instrument, pull the mains plug and unscrew the rear-panel feet. ½ Place the instrument onto the front carrying handles, push the tube upwards and take off. ½ Unsc rew the four screws of the front handles at the instrum ent fram e on both sides and take of f the

front handles.

½ Unscrew a countersunk screw (if present) at the front on the labeling panel next to the spinwheel and

pull off the labeling panel towards the front.

½ Unscrew two countersunk screws in the front frame at the top and at the bottom as well as two

countersunk screws at the front above the AUX1/2 BNC connectors.

½ Unscrew a combi screw at the top of the m odule support for support of the Option FLOPPY DISK

DRIVE CMU–U61 or PCMCIA INTERFACE.

½ Af ter unscr ewing the two countersunk s crews at the top lef t instr ument fram e slightly lift the cover at

the top of the instrument, slightly shift towards the right and lift off.

½ Slightly push the FRONT MODULE from the rear to the front using little pressure.

Note: Note the c onnecting cables for the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE that are still connected to the MOTHERBOARD1.

½ After sliding out the FRONT MODULE disconnect the respective connec ting c able f or the option f rom

the MOTHERBOARD1 as follows:

• Option FLOPPY DISK DRIVE CMU–U61: The connecting cable is a film cable. ½ Lift the locking bracket of the connector on the MOTHERBOARD and remove the film cable.

• PCMCIA INTERFACE: The connecting cable consists of three ribbon cables.

½ Disconnect the three ribbon cables from the MOTHERBOARD1 connector.

½ Take the FRONT MODULE completely out of the CMU. ½ Unscrew the two countersunk screws at the cover of the Option FLOPPY DISK DRIVE CMU–U61 or

PCMCIA INTERFACE and carefully pull the option towards the front out of the FRONT MODULE.

1100.4903.82 3.17 E-4

MODULE Replacement CMU

Installing the new FRONT MODULE and completing the instrument

½ Install the old Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA INTERFACE in a new FRONT

MODULE in the reverse order.

½ Install the new FRONT MODULE in the CMU in the reverse order.

Caution: Make sure to route the cables of the Option FLOPPY DISK D RIVE CMU–U61 or PCMCIA

INTERFACE properly, not to catch them and plug them into the MOTHERBOARD before completely sliding the FRONT MODULE into the CMU.

½ Complete the instrument without causing damage to the cables.

Putting into operation

½ Connect the instrument to the m ains and switch on: The built-in FRONT MODULE CONTROLLER

registers on the LCD. The BIOS is factory-set to the CMU.

½ If necessary, load new software to the FRONT MODULE (see chapter 4, Firmware update). ½ During startup observe the display. ½ When three BEEPs can be heard, press the MENU SELECT key.

The Version Manager is started (see also chapter 4, Firmware update). The display includes the menu item FIRMWARE UPDATE AFTER BOARD CHANGE.

½ Press the softkey to the left of the above mentioned menu item.

The automatic m odule data adjustment is performed under sof tware control, firmware updates for microprocess ors and program m able devices being also per form ed on the m odules. This m ay take a few minutes.

After the adjustment has been term inated, the operating software starts automatically and the CMU is ready for use and can be operated as usual.

1100.4903.82 3.18 E-4

CMU MODULE Replacement

Replacing the FRONT MODULE CONTROLLER in the FRONT MODULE

(see chapter 5, spare part list, Current No. 450/455 and explosion drawing 1090.9244.01 D sheet 2/3) The FRONT MODULE CONTROLLER is incorporated in the FRONT MODULE. For replacement

proceed as follows:

Opening the instrument and removing the FRONT MODULE

front handles.

½ Unscrew a countersunk screw (if present) at the front on the labeling panel next to the spinwheel and

pull off the labeling panel towards the front.

½ Unscrew two countersunk screws in the front frame at the top and at the bottom as well as two

countersunk screws at the front above the AUX1/2 BNC connectors.

½ Unscrew a combi screw at the top of the m odule support for support of the Option FLOPPY DISK

DRIVE CMU–U61 or PCMCIA INTERFACE.

½ Af ter unscr ewing the two countersunk s crews at the top lef t instr ument fram e slightly lift the cover at

the top of the instrument, slightly shift towards the right and lift off.

½ Slightly push the FRONT MODULE from the rear to the front using little pressure.

Note: Note the c onnecting cables for the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE that are still connected to the MOTHERBOARD1.

½ After sliding out the FRONT MODULE disconnect the respective connec ting c able f or the option f rom

the MOTHERBOARD1 as follows:

• Option FLOPPY DISK DRIVE CMU–U61: The connecting cable is a film cable. ½ Lift the locking bracket of the connector on the MOTHERBOARD1 and remove the film

cable.

• PCMCIA INTERFACE: The connecting cable consists of three ribbon cables.

½ Disconnect the three ribbon cables from the MOTHERBOARD1 connector.

½ Take the FRONT MODULE completely out of the CMU.

1100.4903.82 3.19 E-4

MODULE Replacement CMU

Removing the FRONT MODULE CONTROLLER from the FRONT MODULE

½ Unscrew the two countersunk screws on the cover of the O ption F LOPPY DISK DRIVE CMU–U61 or

PCMCIA INTERFACE and carefully pull out the option from the FRONT MODULE towards the front.

½ Place the FRONT MODULE onto a clean surface with the aluminum panel pointing downwards. ½ Unsc rew the four screws on the m ounting plate at the top, bottom and left and c arefully swing away

the mounting plate towards the rear.

½ Pull off the connecting cables to the LCD, DC/AC illumination c onverter, keyboard membrane and

spinwheel.

Note: When pulling off the connecting cables be careful with the cable connecting to the

keyboard. It is a film cable which can only be dis connected after sliding up the lock of the film cable plug. Besides, be careful with the ribbon cable connecting to the spinwheel. First loosen the locking brackets of the plug.

½ MODEL 04: Pull off the ribbon c able f rom the hard disk to the FRO NT MO DULE CO NT RO LLER and

unscrew the four screws of the br ack et through the rear of the alum inum panel and rem ove the hard disk.

½ MODEL 12: Pull off the ribbon cable from the hard disk to the FRONT MODULE CONTROLLER. ½ Disconnect the fan cable from the printed circuit board of the FRONT MODULE CONTROLLER. ½ Unscrew the eleven com bi screws of the FRONT MO DULE CONTROLLER board and take out the

FRONT MODULE CONTROLLER.

Installing the new FRONT MODULE CONTROLLER

½ Carefully insert the new FRONT MODULE CONTROLLER, fasten using the eleven combi screws

and reconnect the cable to the fan.

½ MODEL 04: Carefully insert the hard disk, fasten using the four screws through the rear of the

aluminum panel and reconnect the ribbon cable to the FRONT MODULE CONTROLLER.

½ MODEL 12: Carefully reconnect the ribbon cable to the FRONT MODULE CONTROLLER. ½ Replace the memory modules from the old into the new FRONT MODULE CONTROLLER (see

replacing the memory modules).

½ Car efully insert the cable connectors to the controller boar d, taking care not to r everse the polarities ,

and replace the mounting plate in the reverse order.

Installing the option again and completing the instruments

½ Replac e the old Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA INTERFACE in the FRONT

MODULE in the reverse order.

½ To install the FRONT MODULE1 in the CMU again proceed in the reverse order.

Note: Make sure to route the cables of the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE properly, not to catch them and insert them on the MOTHERBOARD1 before sliding the FRONT MODULE completely into the CMU.

½ Complete the instrument without causing damage to the cables.

1100.4903.82 3.20 E-4

CMU MODULE Replacement

Putting into operation

½ Connect the instrument to the mains. ½ Connect the external keyboard to the keyboard connector on the rear panel of the CMU. ½ Switch on the CMU. ½ During startup observe the display. ½ When three BEEPs can be heard, press the softkey to the left upper side of the LCD: C:\ will appear.

½ MODEL 04:

• Insert a flash disk with the program FLASH FMR4 (this pr ogram is available on R & S Lotus Notes Service Board) in the PCMCIA slot 0 (right drive D:) or a floppy disk with the program FLASH FMR4 in the Option FLOPPY DISK DRIVE CMU-U61.

• Start program FLASH FMR4 with D:\ FLASH FM4.BAT or A:\ FLASH FM4.BAT.

½ MODEL 12:

• Insert a flash disk with the program FLASH FMR5 (this pr ogram is available on R & S Lotus Notes Service Board) in the PCMCIA slot 0 (right drive D:) or a floppy disk with the program FLASH FMR5 in the Option FLOPPY DISK DRIVE CMU-U61.

• Start program FLASH FMR5 with D:\ FLASHFM5.BAT or A:\ FLASHFM5.BAT.

½ During the programming of the flash EEPROM the CMU must not be switched off. ½ When the prompt C:\ appears then switch off and on the CMU. ½ Press the key DEL (Delete) on the external keyboard in order to get into the Setup menu. ½ Choose the item DEFAULT OPTIMAL (MODEL 04) / LOAD CMU-DEFAULTS (MODEL 12) and

press ENTER; quit with y and ENTER.

½ Only if Option FLOPPY DISK DRIVE CMU-U61 is fitted, then choose the item Setup Standar d and

set FLOPPY A to '1.44 MB 3 ½'. Exit with the ESC key.

½ Exit Bios Setup with key ESC and quit with y (save changes and exit) and press ENTER. The CMU starts the operating software automatically, it is ready for use and can be operated as usual.

1100.4903.82 3.21 E-4

MODULE Replacement CMU

Replacing the Lithium Battery in the FRONT MODULE

(see chapter 5, spare part list, Current No. 460 and explosion drawing 1090.9244.01 D sheet 2/3) The lithium battery is accomm odated on the F RO NT MODULE CONTROLLER board inside the FRO NT

MODULE. For replacement proceed as follows:

Note: Data in the CMOS RAM will be lost when replacing the lithium battery.

Opening the instrument and removing the FRONT MODULE

front handles.

½ Unscrew a countersunk screw (if present) at the front on the labeling panel next to the spinwheel and

pull off the labeling panel towards the front.

½ Unscrew two countersunk screws in the front frame at the top and at the bottom as well as two

countersunk screws at the front above the AUX1/2 BNC connectors.

½ Unscrew a combi screw at the top of the m odule support for support of the Option FLOPPY DISK

DRIVE CMU–U61 or PCMCIA INTERFACE.

½ Af ter unscr ewing the two countersunk s crews at the top lef t instr ument fram e slightly lift the cover at

the top of the instrument, slightly shift towards the right and lift off.

½ Slightly push the FRONT MODULE from the rear to the front using little pressure.

Note: Note the c onnecting cables for the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE that are still connected to the MOTHERBOARD1.

½ After sliding out the FRONT MODULE disconnect the respective connec ting c able f or the option f rom

the MOTHERBOARD1 as follows:

• Option FLOPPY DISK DRIVE CMU–U61: The connecting cable is a film cable. ½ Lift the locking bracket of the connector on the MOTHERBOARD1 and remove the film

cable.

• PCMCIA INTERFACE: The connecting cable consists of three ribbon cables.

½ Disconnect the three ribbon cables from the MOTHERBOARD1 connector.

½ Take the FRONT MODULE completely out of the CMU.

1100.4903.82 3.22 E-4

CMU MODULE Replacement

Removing the lithium battery

½ Unscrew the two countersunk screws on the cover of the O ption F LOPPY DISK DRIVE CMU–U61 or

PCMCIA INTERFACE and carefully pull out the option from the FRONT MODULE towards the front.

½ Place the FRONT MODULE onto a clean surface with the aluminum panel pointing downwards. ½ Unscrew the four screws on the mounting plate at the top, bottom and right and carefully swing away

the mounting plate towards the rear.

½ Pull off the connecting cables to the LCD, DC/AC illumination c onverter, keyboard membrane and

spinwheel.

Note: When pulling off the connecting cables be careful with the cable connecting to the

½ Locate the lithium battery on the controller board (see chapter 5, explosion drawing 1090.9244.01 D

sheet 2/3).

½ Unplug jumper J7 (MODEL 04) and J12 (MODEL 12). ½ Car efully unsolder the negative term inal from the soldering lug f irst using the so ldering iron (m edium

temperature). Then uns older the positive terminal. If neces sary, remove the mec hanical lock (c able clamp) and take out the battery.

Note: T he lithium battery is of the type 3.4 V (

(spare part list, Current No. 460).

Caution!

Lithium batteries must not be exposed to high temperatures or fire. Keep away from children. If the battery is replaced improperly, there is danger of explosion. Only

replace the battery by R&S type (spare part list, Current No. 460). Lithium batteries are hazardous waste and must be disposed of in dedicated

containers. Do not short-circuit the battery!

∅

15mm * 25mm ) with soldering lug terminals

1100.4903.82 3.23 E-4

MODULE Replacement CMU

Installing the new battery and completing the instrument

½ Shorten the length of the connecting wires of the new battery as with the old battery and replace with

the correct polarity.

Note: Do not short-circuit the battery!

½ If necessary, replace the mechanical lock (cable clamp). First solder the positive term inal to the PC

board, then the negative terminal.

½ MODEL 04: Plug jumper J7 first to the position m iddle and right (position RAM dischar ge) and then

to middle and left position. Leave jumper J7 at this position (position before battery replacement).

½ MODEL 12: Plug jumper J12 first to the position middle and left (pos ition RAM discharge) and then

to middle and right position. Leave jumper J12 at this position (position before battery replacement).

½ Carefully plug the cable connectors to the controller board without reversing the polarities and

replace the mounting plate in the reverse order.

½ Install the old Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA INTERFACE in the FRONT

MODULE in the reverse order.

½ Install the FRONT MODULE in the CMU in the reverse order.

Note: Make sure to route the cables of the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE properly, not to catch them and insert them on the MOTHERBOARD1 before sliding the FRONT MODULE completely into the CMU.

½ Complete the instrument without causing damage to the cables.

Putting into operation

½ Connect the instrument to the mains. ½ Connect the external keyboard to the keyboard connector on the rear panel of the CMU. ½ Switch on the CMU. ½ Press the key DEL (Delete) on the external keyboard in order to get into the Setup menu ½ Choose the item DEFAULT OPTIMAL (MODEL 04) / LOAD CMU-DEFAULTS (MODEL 12) and

press ENTER; quit with y and ENTER.

½ Choose the item Setup Standard and set date and time. Exit with ESC key. ½ Exit BIOS Setup with the key ESC and quit with y (save changes and exit) and ENTER.

The CMU starts the operating software automatically, it is ready for use and can be operated as usual.

1100.4903.82 3.24 E-4

CMU MODULE Replacement

Replacing the Hard Disk in the FRONT MO DULE

(see chapter 5, spare part list, Current No. 490 and 495 and explosion drawing 1090.9244.01 D) The hard disk is incorporated in the FRONT MODULE (MODULE 04) or outside on the back of the

aluminum panel of the FRONT MODULE (MODEL 12). For replacement proceed as follows:

Opening the instrument and removing the FRONT MODULE

½ Switch off the instrument, pull the mains plug and unscrew the rear-panel feet. ½ Place the instrument onto the front carrying handles, push the tube upwards and take off.

Only MODEL 04:

½ Unsc rew the four screws of the front handles at the instrum ent fram e on both sides and take of f the

front handles.

½ Unscrew a countersunk screw (if present) at the front on the labeling panel next to the spinwheel and

pull off the labeling panel towards the front.

½ Unscrew two countersunk screws in the front frame at the top and at the bottom as well as two

countersunk screws at the front above the AUX1/2 BNC connectors.

½ Unscrew a combi screw at the top of the m odule support for support of the Option FLOPPY DISK

DRIVE CMU–U61 or PCMCIA INTERFACE.

½ After unscrewing the two countersunk s crews at the top lef t instr um ent fr am e, slightly lift the cover at

the top of the instrument, slightly shift towards the right and lift off.

½ Slightly push the FRONT MODULE from the rear to the front using little pressure.

Note: Note the c onnecting cables for the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE that are still connected to the MOTHERBOARD.

½ After sliding out the FRONT MODULE disconnect the respective connec ting c able f or the option f rom

the MOTHERBOARD1 as follows:

• Option FLOPPY DISK DRIVE CMU–U61: The connecting cable is a film cable. ½ Lift the locking bracket of the connector on the MOTHERBOARD1 and remove the film

cable.

• Option PCMCIA INTERFACE: The connecting cable consists of three ribbon cables.

½ Disconnect the three ribbon cables from the MOTHERBOARD1 connector.

½ Take the FRONT MODULE completely out of the CMU.

1100.4903.82 3.25 E-4

MODULE Replacement CMU

Removing the hard disk from the FRONT MODULE MODEL 04:

½ Unscrew the two countersunk screws on the cover of the Option FLOPPY DISK DRIVE CMU–U61

or PCMCIA INTERFACE and carefully pull out the option from the FRONT MODULE towards the front.

½ Place the FRONT MODULE onto a clean surface with the aluminum panel pointing downwards. ½ Unscrew the four screws on the mounting plate at the top, bottom and right and carefully swing away

the mounting plate towards the rear.

½ Pull off the connecting cables to the LCD, DC/AC illumination c onverter, keyboard membrane and

spinwheel.

Note: When pulling off the connecting cables be careful with the cable connecting to the

½ Remove the ribbon cable from the hard disk to the FRO NT MODULE CONTROLLER, unscrew the

four screws of the bracket through the rear of the aluminum panel and take out the hard disk.

MODEL 12: ½ After unscrewing the two countersunk s crews at the top lef t instr um ent fr am e, slightly lift the cover at

the top of the instrument, slightly shift towards the right and lift off.

½ Remove the ribbon cable from the hard disk to the FRO NT MODULE CONTROLLER, unscrew the

two screws on the back of the alum inum panel of the FRONT MODULE and pull out the har ddisk. Unscrew the hard disk from the disk holder.

Installing the new hard disk MODEL 04:

½ Car efully insert the new hard disk, f asten with the four sc rews of the brack et through the rear of the

aluminum panel and connect the ribbon cable to the FRONT MODULE CONTROLLER.

Note: T he hard disk is an IDE hard disk whic h c an be obtained under R&S s par e part lis t, Curr ent

No. 490. It is already formatted for the CMU and contains the operating system.

½ Carefully plug the cable connectors to the controller board without reversing the polarities and

replace the mounting plate in the reverse order.

Only MODEL 04: Installing the option again and completing the instrument

½ Install the old Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA INTERFACE in the FRONT

MODULE in the reverse order.

½ Then install the FRONT MODULE in the CMU in the reverse order.

Note: Make sure to route the cables of the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE properly, not to catch them and insert them on the MOTHERBOARD1 before sliding the FRONT MODULE completely into the CMU.

½ Complete the instrument without causing damage to the cables.

1100.4903.82 3.26 E-4

CMU MODULE Replacement

MODEL 12:

½ Carefully fit the new hard disk, fasten with the four screws to the disk holder. Insert the hard disk

with the disk holder on the back of the aluminum case of the FRONT MODULE. Be careful with the lower cover plate locking in the concerning opening. Connect the ribbon cable to the FRONT MODULE CONTROLLER. Fit the disk holder with two screws to the aluminum panel of the FRONT MODULE.

½ Complete the instrument without causing damage to the cables.

Putting into operation

½ Connect the instrument to the m ains and switch on: The built-in FRONT MODULE CONTROLLER

registers on the LCD. The BIOS is factory-set to the CMU, the new hard disk is automatically detected.

½ Install the new software (see chapter 4, Firmware update).

1100.4903.82 3.27 E-4

MODULE Replacement CMU

Replacing the Memory Modules in the FRONT M O DULE

(see chapter 5, spare part list, Current No. 470 or 480 (MODEL 04) Current No. 475 or 485 (MODEL 12) and explosion drawing 1090.9244.01 D sheet 2/3)

The memory modules are incorporated in the F RON T MO DULE. T he F RO NT MO DULE CONTROLLER features two SIMM-72 slots, in each of which up to 32 MB m emory can be fitted (MODEL 04) or two SODIMM-144 slots, in each of which up to 64 MB memory can be fitted (MODEL 12). The BIOS automatically detects the size of the memory modules. For replacement proceed as follows:

Opening the instrument and removing the FRONT MODULE

½ Switch off the instrument, pull the power plug, unscrew the rear-panel feet. ½ Place the instrument onto the front carrying handles, push the tube upwards and take off. ½ Unscrew the four s crews of the front handles fr om the instrum ent frame on both sides and tak e off

the front handles.

½ Unscrew a countersunk screw (if present) at the front on the labeling panel next to the spinwheel and

pull off the labeling panel towards the front.

½ Unscrew two countersunk screws in the front frame at the top and at the bottom as well as two

countersunk screws at the front above the AUX1/2 BNC connectors.

½ Unscrew a combi screw at the top of the m odule support for support of the Option FLOPPY DISK

DRIVE CMU–U61 or PCMCIA INTERFACE.

½ Af ter unscr ewing the two countersunk s crews at the top lef t instr ument fram e slightly lift the cover at

the top of the instrument, slightly shift towards the right and lift off.

½ Slightly push the FRONT MODULE from the rear to the front using little pressure.

Note: Note the c onnecting cables for the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE that are still connected to the MOTHERBOARD1.

½ After sliding out the FRONT MODULE disconnect the respective connec ting c able f or the option f rom

the MOTHERBOARD as follows:

• Option FLOPPY DISK DRIVE CMU–U61: The connecting cable is a film cable. ½ Lift the locking bracket of the connector on the MOTHERBOARD1 and remove the film

cable.

• PCMCIA INTERFACE: The connecting cable consists of three ribbon cables.

½ Disconnect the three ribbon cables from the MOTHERBOARD1 connector.

½ Take the FRONT MODULE completely out of the CMU.

1100.4903.82 3.28 E-4

CMU MODULE Replacement

Making the memory modules accessible

½ Unscrew the two countersunk screws on the cover of the O ption F LOPPY DISK DRIVE CMU–U61 or

PCMCIA INTERFACE and carefully pull out the option from the FRONT MODULE towards the front.

½ Place the FRONT MODULE onto a clean surface with the aluminum panel pointing downwards. ½ Unscrew the four screws on the mounting plate at the top, bottom and right and carefully swing away

the mounting plate towards the rear.

½ Pull off the connecting cables to the LCD, DC/AC illumination c onverter, keyboard membrane and

spinwheel.

Note: When pulling off the connecting cables be careful with the cable connecting to the

Removing the memory module

½ Remove the old module: Carefully bend the lateral brackets towards the outside and pull out the

memory module.

Installing the new memory module and completing the instrument

½ Insert the new module: insert the m emory module into the slot, slightly press towards the rear and

engage the brackets on the sides.

Note: MOD EL 04: The memory modules can be obtained with the size 16 MB (spare part list,

Current No. 470) and 32 MB (spare part list, Current No. 480). It is pos sible to insert two of these modules, even of different size. First fit slot 1 (U35) and then slot 2 (U36).

MODE L 12: The memory modules can be obtained with the size 32 MB (spare part list, Current No. 475) and 64 MB (spare part list, Current No. 485). It is pos sible to insert two of these modules, even of different size. It is not recommended to fit more than 64 MB in sum. First fit slot 1 (U24) and then slot 2 (U25).

½ Carefully plug the cable connectors to the controller board without reversing the polarities and

replace the mounting plate in the reverse order.

½ Install the old Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA INTERFACE in the FRONT

MODULE in the reverse order.

Note: Make sure to route the cables of the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE properly, not to catch them and insert them on the MOTHERBOARD before sliding the FRONT MODULE completely into the CMU.

½ Complete the instrument without causing damage to the cables.

Putting into operation

½ Connect the instrument to the m ains and switch on. The built-in FRONT MODULE CONTROLLER

registers on the LCD. The BIOS is factory-set to the CMU.

½ If required, supplement the BIOS Setup as follows:

• Connect external keyboard to keyboard connector on the rear panel of the CMU.

• If the message 'CMOS Memory Size wrong, RUN SETUP, Press F1 to resum e‘ appears, press

the F1 key.

• Quit the BIOS setup using the ESC key and the RETURN key.

The CMU starts the operating software automatically and is ready for use and can be operated as usual.

1100.4903.82 3.29 E-4

MODULE Replacement CMU

Replacing the LCD and/or DC/AC Converter in the FRONT MODULE

(see chapter 5, spare part list, LCD: Current No. 360/365, DC/AC Conv erter: Current No. 410/415 and explosion drawing 1090.9244.01 D sheet 2/3)

The LCD is accommodated on the mounting plate of the FRONT MODULE together with the ass ociated DC/AC converter. It is connected to the FRONT MODULE CO NT RO LLER via cables , which c an also be replaced individually. For replacement proceed as follows:

Opening the instrument and removing the FRONT MODULE

front handles.

½ Unscrew a countersunk screw (if present) at the front on the labeling panel next to the spinwheel and

pull off the labeling panel towards the front.

½ Unscrew two countersunk screws in the front frame at the top and at the bottom as well as two

countersunk screws at the front above the AUX1/2 BNC connectors.

½ Unscrew a combi screw at the top of the m odule support for support of the Option FLOPPY DISK

DRIVE CMU–U61 or PCMCIA INTERFACE.

½ Af ter unscr ewing the two countersunk s crews at the top lef t instr ument fram e slightly lift the cover at

the top of the instrument, slightly shift towards the right and lift off.

½ Slightly push the FRONT MODULE from the rear to the front using little pressure.

Note: Note the c onnecting cables for the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE that are still connected to the MOTHERBOARD1.

½ After sliding out the FRONT MODULE disconnect the respective connec ting c able f or the option f rom

the MOTHERBOARD1 as follows:

• Option FLOPPY DISK DRIVE CMU–U61: The connecting cable is a film cable. ½ Lift the locking bracket of the connector on the MOTHERBOARD1 and remove the film

cable.

• PCMCIA INTERFACE: The connecting cable consists of three ribbon cables.

½ Disconnect the three ribbon cables from the MOTHERBOARD1 connector.

½ Take the FRONT MODULE completely out of the CMU.

1100.4903.82 3.30 E-4

CMU MODULE Replacement

Making the LCD accessible

½ Unscrew the two countersunk screws on the cover of the O ption F LOPPY DISK DRIVE CMU–U61 or

PCMCIA INTERFACE and carefully pull out the option from the FRONT MODULE towards the front.

½ Place the FRONT MODULE onto a clean surface with the aluminum panel pointing downwards. ½ Unscrew the four screws on the mounting plate at the top, bottom and right and carefully swing away

the mounting plate towards the rear.

½ Pull off the connecting cables to the LCD, DC/AC illumination c onverter, keyboard membrane and

spinwheel.

Note: When pulling off the connecting cables be careful with the cable connecting to the

Removing the LCD and/or DC/AC Converter

½ Uns crew the two screws of the DC/AC converter shielding and pull off the plug of the connecting

cable to the DC/AC converter.

½ If required, uns crew the two screws of the DC/AC converter and loosen the connec ting cable to the

FRONT MODULE CONTROLLER.

½ Remove the DC/AC converter. ½ Loosen the four screws of the LCD shielding and take off the shielding.

Warning!

If there are spacing pieces under the LCD shielding, use them again for installation.

½ Loosen the connecting cable to the FRONT MODULE CONTROLLER by unscrewing the two screws

and remove.

½ Unscrew the four screws of the LCD on the mounting plate and remove the LCD.

Installing the new LCD and/or DC/AC converter and completing the instrument

½ Insert new LCD and/or DC/AC converter in the reverse order, connect all c onnecting cables in the

correct position and replace all screws.

½ Carefully plug the cable connectors to the controller board without reversing the polarities and

replace the mounting plate in the reverse order.

½ Replac e the old Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA INTERFACE in the FRONT

MODULE in the reverse order.

Note: Make sure to route the cables of the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE properly, not to catch them and insert them on the MOTHERBOARD before sliding the FRONT MODULE completely into the CMU.

½ Complete the instrument without causing damage to the cables.

Putting into operation

½ Connect the instrument to the mains and switch on. The built-in front-module controller registers on the LCD and starts the operating software.

1100.4903.82 3.31 E-4

MODULE Replacement CMU

Replacing the Keyboard Membrane and/or Mat on the FRONT MODULE

(see chapter 5, spare part list, Current No. 290 (Keyboard Mat) / 300 (Keyboard Membrane) and explosion drawing 1090.9244.01 D sheet 2/3)

The keyboard memb rane is the contact f ilm f or the rubber k eys (mat) behind the labeling panel and the keyboard frame. For replacement proceed as follows:

Opening the instrument and removing the FRONT MODULE

front handles.

½ Unscrew a countersunk screw (if present) at the front on the labeling panel next to the spinwheel and

pull off the labeling panel towards the front.

½ Unscrew two countersunk screws in the front frame at the top and at the bottom as well as two

countersunk screws at the front above the AUX1/2 BNC connectors.

½ Unscrew a combi screw at the top of the m odule support for support of the Option FLOPPY DISK

DRIVE CMU–U61 or PCMCIA INTERFACE.

½ Af ter unscr ewing the two countersunk s crews at the top lef t instr ument fram e slightly lift the cover at

the top of the instrument, slightly shift towards the right and lift off.

½ Slightly push the FRONT MODULE from the rear to the front using little pressure.

Note: Note the c onnecting cables for the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE that are still connected to the MOTHERBOARD1.

½ After sliding out the FRONT MODULE disconnect the respective connec ting c able f or the option f rom

the MOTHERBOARD1 as follows:

• Option FLOPPY DISK DRIVE CMU–U61: The connecting cable is a film cable. ½ Lift the locking bracket of the connector on the MOTHERBOARD1 and remove the film

cable.

• PCMCIA INTERFACE: The connecting cable consists of three ribbon cables.

½ Disconnect the three ribbon cables from the MOTHERBOARD1 connector.

½ Take the FRONT MODULE completely out of the CMU.

1100.4903.82 3.32 E-4

CMU MODULE Replacement

Removing the membrane

½ Unscrew the two countersunk screws on the cover of the O ption F LOPPY DISK DRIVE CMU–U61 or

PCMCIA INTERFACE and carefully pull out the option from the FRONT MODULE towards the front.

½ Place the FRONT MODULE onto a clean surface with the aluminum panel pointing downwards. ½ Unscrew the four screws on the mounting plate at the top, bottom and right and carefully swing away

the mounting plate towards the rear.

½ Pull off the connecting cables to the LCD, DC/AC converter, membrane and spinwheel.

Note: When pulling off the connecting cables be careful with the cable connecting to the

½ Place the mounting plate onto the surface with the k eyboard frame pointing upwards and unscrew

the 10 countersunk screws of the keyboard frame.

½ Pull off the knob of the spinwheel. ½ Lift off the keyboard frame as well as the mat which is now accessible. ½ Lift off the membrane and pull the connecting cable through the hole of the mounting plate.

Installing the new membrane and completing the instrument

½ Insert the new membrane and/or mat in the reverse order, insert the mat at the correct position

(observe the labeling of the keys!) and fasten the keyboard frame with screws.

½ Carefully plug the cable connectors to the controller board without reversing the polarities and

replace the mounting plate in the reverse order.

½ Install the old Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA INTERFACE in the FRONT

MODULE in the reverse order.

½ Install the FRONT MODULE in the CMU in the reverse order.

Note: Make sure to route the cables of the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE properly, not to catch them and insert them on the MOTHERBOARD1 before sliding the FRONT MODULE completely into the CMU.

½ Complete the instrument without causing damage to the cables.

Putting into operation

½ Connect the instrument to the mains and switch on. The built-in FRONT MODULE CONTROLLER registers on the LCD and starts the operating software.

1100.4903.82 3.33 E-4

MODULE Replacement CMU

Replacing the Labeling Panel on the FRONT M O DULE

(see chapter 5, spare part list, Current No. 260 and explosion drawing 1100.0008.01 D sheet 2) The labeling panel is the outer front panel which carries the labeling of all the parts on the f ront side of the CMU. For replacement proceed as follows:

Removing the old labeling panel

½ Switch off the instrument and pull the mains plug. ½ Unsc rew the four screws of the front handles at the instrum ent fram e on both sides and take of f the

front handles.

½ Unscrew a countersunk screw (if present) at the front on the labeling panel next to the spinwheel and

pull off the labeling panel towards the front.

Installing the new labeling panel and completing the instrument

½ Install the new labeling panel and tighten all screws. ½ Complete the instrument.

Putting into operation

½ Connect the instrument to the mains and switch on. The built-in FRONT MODULE CONTROLLER registers on the LCD and starts the operating software.

1100.4903.82 3.34 E-4

CMU MODULE Replacement

Replacing the Options FLOPPY DISK DRIVE CMU-B61 or PCMCIA INTERFACE

(see chapter 5, spare part list, Current No. 780 (FLOPPY DISK DRIVE) and 830 (PCMCIA INTERFACE, and explosion drawing 1100.0008.01 D sheet 2)

The options FLOPPY DISK DRIVE or PCMCIA INTERFACE are f itted on the FRONT MODULE. For replacement proceed as follows:

Opening the instrument and removing the FRONT MODULE

front handles.

½ Unscrew a countersunk screw (if present) at the front on the labeling panel next to the spinwheel and

pull off the labeling panel towards the front.

½ Unscrew two countersunk screws in the front frame at the top and at the bottom as well as two

countersunk screws at the front above the AUX1/2 BNC connectors.

½ Unscrew a combi screw at the top of the m odule support for support of the Option FLOPPY DISK

DRIVE CMU–U61 or PCMCIA INTERFACE.

½ Af ter unscr ewing the two countersunk s crews at the top lef t instr ument fram e slightly lift the cover at

the top of the instrument, slightly shift towards the right and lift off.

½ Slightly push the FRONT MODULE from the rear to the front using little pressure.

Note: Note the c onnecting cables for the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE that are still connected to the MOTHERBOARD1.

½ After sliding out the FRONT MODULE disconnect the respective connec ting c able f or the option f rom

the MOTHERBOARD1 as follows:

• Option FLOPPY DISK DRIVE CMU–U61: The connecting cable is a film cable. ½ Lift the locking bracket of the connector on the MOTHERBOARD1 and remove the film

cable.

• PCMCIA INTERFACE: The connecting cable consists of three ribbon cables.

½ Disconnect the three ribbon cables from the MOTHERBOARD1 connector.

½ Take the FRONT MODULE completely out of the CMU.

1100.4903.82 3.35 E-4

MODULE Replacement CMU

Replacing the option

½ Unscrew the two countersunk screws on the cover of the O ption F LOPPY DISK DRIVE CMU–U61 or

PCMCIA INTERFACE and carefully pull out the option from the FRONT MODULE towards the front.

½ Option FLOPPY DISK DRIVE: Unscr ew the countersunk screws on the f rame of the FLO PPY DISK

DRIVE and take out the FLOPPY DISK DRIVE.

½ Install the new FLOPPY DISK DRIVE or PCMCIA INTERFACE in the FRONT MODULE in the

reverse order.

½ Install the FRONT MODULE in the CMU in the reverse order.

Note: Make sure to route the cables of the Option FLOPPY DISK DRIVE CMU–U61 or PCMCIA

INTERFACE properly, not to catch them and insert them on the MOTHERBOARD1 before sliding the FRONT MODULE completely into the CMU.

Completing the instrument and putting into operation

½ Complete the instrument without causing damage to the cables. ½ Connect the instrument to the mains and switch on.

• If the Option FLOPPY DISK DRIVE CMU-B61 is replaced by PCMCIA INTERFACE, the following BIOS setup modification will be necessary:

½ Connect the external keyboard to the keyboard connector at the rear of the CMU. ½ Switch the CMU off and on. ½ Press the hardkey ’Delete’ at the external keyboard to get in the BIOS setup. ½ Select Setup with cursor keys and confirm with ENTER. ½ Select ’Floppy A’ with cursor keys and confirm with ENTER. ½ Select ’Not installed’ with cursor keys and confirm with ENTER.

½ Q uit BIOS Setup by pressing twice the hardkey ESC and confirm with ENTER. The CMU starts

automatically.

• If PCMCIA INTERFACE is replaced by the Option FLOPPY DISK DRIVE CMU-B61, the following BIOS Setup modification will be necessary:

½ Connect the external keyboard to the keyboard connector at the rear of the CMU. ½ Switch the CMU off and on. ½ Press the hardkey ’Delete’ at the external keyboard to get in the BIOS Setup. ½ Select Setup with cursor keys and confirm with ENTER. ½ Select ’Floppy A’ with cursor keys and confirm with ENTER. ½ Select '1.44 MB 3 ½' with cursor keys and confirm with ENTER.

½ Q uit BIOS Setup by pressing twice the hardkey ESC and confirm with ENTER. The CMU starts

automatically.

The built-in FRONT MODULE CONTROLLER registers on the LCD and starts the operating software.

1100.4903.82 3.36 E-4

CMU MODULE Replacement

Replacing the RF FRONTEND

(see chapter 5, spare part list, Current No. 520 and explosion drawing 1100.0008.01 D sheet 2) The RF FRONTEND is installed at the bottom of the CMU at the front r ight. For r eplac ement proceed as

follows:

Opening the instrument and removing the RF FRONTEND

½ Switch off the instrument, pull the mains plug and unscrew the rear-panel feet. ½ Place the instrument onto the front carrying handles, push the tube upwards and take off. ½ Place the instrument upside down to make the bottom accessible. ½ Pull off the ribbon cable to the MOTHERBOARD on the RF FRONTEND. Completely unscrew RF

SMA coax cables to the RXTX BOARD1 (if present, also those to the RXTX2 BOARD and RXTXAUX1/2 connectors) on the RF FRONTEND and RXTX BOARD1 using a special wrench

½ Unscrew the two countersunk screws at the bottom front of the front frame and one countersunk

screw on the side panel of the CMU for supporting the RF FRONTEND.

½ Pull the RF FRONTEND approx. 20 mm towards the rear and then swing towards the bottom.

Installing the new RF FRONTEND MODULE and completing the instrument

∗

½ Insert the RF FRONTEND into the instrument in the reverse order and connect all cables. ½ Complete the instrument without causing damage to the cables. ½ Connect the instrument to the mains and switch on.

Automatic module data adjustment

½ During startup observe the display. ½ When three BEEPs can be heard, press the MENU SELECT key.

The version manager is started (see also chapter 4, Firmware update). The display includes the menu item FIRMWARE UPDATE AFTER BOARD CHANGE.

½ Press the softkey to the left of the above mentioned menu item.

The automatic m odule data adjustment is perform ed under software control, firmware updates for microprocessors and programmable devices being performed as well. This may take a few minutes.

After the adjustment has been term inated, the operating software starts automatically and the CMU is ready for use and complies with the specifications, except for the level accuracy. In order to achieve the level accuracy described in the data sheet, a so-called path error data record is necessary. To this end, the CMU must be measured using the test s ystem ACS 100 (see chapter 1, Performance Test).

∗

available in CMU-Service Kit CMU-Z3 (1100.7690.02)

1100.4903.82 3.37 E-4

MODULE Replacement CMU

Replacing the REFERENCE BOARD

(see chapter 5, spare part list, Current No. 540 and explosion drawing 1100.0008.01 D sheet 2) The REFERENCE BOARD is installed at the front r ight top of the CMU as plug-in module in the cage.

For replacement proceed as follows:

Opening the instrument and removing the REFERENCE BOARD

½ Switch off the instrument, pull the mains plug and unscrew the rear-panel feet. ½ Place the instrument onto the front carrying handles, push the tube upwards and take off. ½ Uns crew the com bi screw f rom the loc king brac ket of the module in the vicinity of the instrum ent fa n

and fold up.

½ Pull off all MMCX plug-in cables (using a pull-out tool

pull out the module towards the top with the help of the locking bracket.

Installing the new REFERENCE BOARD and completing the instrument

½ Insert the new REFERENCE BOARD in the instrument in the reverse order and connec t all MMCX

plug-in cables.

½ Perform manual adjustment +5 VDC reference voltage and TCXO adjustment as described in

chapter 2.

½ Complete the instrument without causing damage to the cables. ½ Connect the instrument to the mains and switch on.

∗

) from the top of the REFERENCE BOARD and

Automatic module data adjustment

½ During startup observe the display. ½ When three BEEPs can be heard, press the MENU SELECT key.

The version manager is started (see also chapter 4, Firmware update). The display includes the menu item FIRMWARE UPDATE AFTER BOARD CHANGE.

½ Press the softkey to the left of the above mentioned menu item.

The automatic m odule data adjustment is perform ed under software control, firmware updates for microprocessors and programmable devices being performed as well. This may take a few minutes.

After the adjustment has been term inated, the operating software starts automatically and the CMU is ready for use and complies with the specifications.

∗

available in CMU-Service Kit CMU-Z3 (1100.7690.02)

1100.4903.82 3.38 E-4

CMU MODULE Replacement

Replacing the RXTX BOARD1

(see chapter 5, spare part list, Current No. 550 and explosion drawing 1100.0008.01 D sheet 2) The RXTX BOARD1 is installed in the module support as plug-in module. For r eplacement proc eed as

follows:

Opening the instrument and removing the RXTX BOARD1

½ Switch off the instrument, pull the mains plug and unscrew the rear-panel feet. ½ Place the instrument onto the front carrying handles, push the tube upwards and take off. ½ After unscrewing the two countersunk s crews at the top lef t instr um ent fr am e, slightly lift the cover at

the top of the instrument, slightly shift towards the right and lift off.

½ Place the instrum ent to the left side and unscrew the two RF SMA coax c ables at the bottom of the

RXTX BOARD1 using a spec ial wrench

∗

tool

) from the bottom.

½ Pull off all MMCX plug-in cables f rom the top of the RX TX 1 BO ARD and pull out the board using the

two levers on both sides.

Installing the new RXTX BOARD1 and completing the instrument

∗

. Likewise pull off the MMCX plug-in c able (using a pull-out

½ Insert the new RXT X BOARD1 into the instrum ent in the reverse order and caref ully connect all the

MMCX plug-in and RF SMA coax cables.

½ Complete the instrument without causing damage to the cables. ½ Connect the instrument to the mains and switch on.

Automatic module data adjustment

½ During startup observe the display. ½ When three BEEPs can be heard, press the MENU SELECT key.

The version manager is started (see also chapter 4, Firmware update). The display includes the menu item FIRMWARE UPDATE AFTER BOARD CHANGE.

½ Press the softkey to the left of the above mentioned menu item.

The automatic m odule data adjustment is perform ed under software control, firmware updates for microprocessors and programmable devices being performed as well. This may take a few minutes.

After the adjustment has been term inated, the operating software starts automatically and the CMU is ready for use and complies with the specifications, except for the high-precision level accuracy. In order to achieve the level accuracy as described in the data sheet, a s o-called path error data recor d is necessary. To this end, the CMU must be measured using the test s ystem ACS 100 (see chapter 1, Performance Test).

∗

available in CMU-Service Kit CMU-Z3 (1100.7690.02)

1100.4903.82 3.39 E-4

MODULE Replacement CMU

Replacing the TR-CORRECTION MODULE in the RXTX BOARD1

(see chapter 5, spare part list, Current No. 555 and explosion drawing 1100.0008.01 D) The TR-CORRECTION MODULE is incorporated in the RXTX1 BOARD as sandwich module. For

replacement proceed as follows:

Opening the instrument and removing the TR-CORRECTION MODULE

the instrument top, slightly push to the right and lift off.

½ Place the instrum ent to the left side and unscrew the two RF SMA coax c ables at the bottom of the

RXTX BOARD1 using a special wrench. Likewise, pull off the MMCX plug-in cable at the bottom.

½ Pull off all the MMCX plug- in cables (using a pull-out tool

pull off the module towards the top using the two levers on the right and left.

½ Unscrew one screw of each cooling plate, pull off the cooling plates towards the side and then

unscrew all screws of the RXTX aluminum cover shells . Then the cover shells of the top and bottom can be removed.

½ Pull off the sandwich module TR-CORRECTION MODULE (using a pull-out tool

BOARD1.

∗

) from the top of the RX TX BOARD1 and

∗

) from the RXTX

Installing the new TR-CORRECTION BOARD and completing the instrument

½ Insert the new TR-CORRECTION MODULE. ½ Reinsert the cover shells in the reverse order and fasten with screws. Attach the cooling plates again. ½ Insert the RXTX BOARD1 into the instrument in the reverse order and carefully connect all the

MMCX plug-in cables and RF-SMA coax cables.

½ Complete the instrument without causing damage to the cables. ½ Connect the instrument to the mains and switch on.

Automatic module data adjustment

½ During startup observe the display. ½ When three BEEPs can be heard, press the MENU SELECT key.

The version manager is started (see also chapter 4, Firmware update). The display includes the menu item FIRMWARE UPDATE AFTER BOARD CHANGE.

½ Press the softkey to the left of the above mentioned menu item.

The automatic m odule data adjustment is perform ed under software control, firmware updates for microprocessors and programmable devices being performed as well. This may take a few minutes.

To this end, the CMU must be measured using the test s ystem ACS 100 (see chapter 1, Performance Test).

∗

available in CMU-Service Kit CMU-Z3 (1100.7690.02)

1100.4903.82 3.40 E-4

CMU MODULE Replacement

Replacing the DIGITAL BOARD

(see chapter 5, spare part list, Current No. 570 and explosion drawing 1100.0008.01 D sheet 2) The DIGITAL BOARD is incorporated in the module support as plug-in module. For replacement

proceed as follows:

Opening the instrument and removing the DIGITAL BOARD

the instrument top, slightly push to the right and lift off.

½ Pull of f all the MMCX plug- in cables (us ing a pull-out tool

pull off the module towards the top using the two levers on the right and left.

Installing the new DIGITAL BOARD and completing the instrument

½ Insert the new DIGIT AL BOARD into the instrument in the rever se order and connect all the MMCX

plug-in cables.

½ Complete the instrument without causing damage to the cables. ½ Connect the instrument to the mains and switch on.

∗

) from the top of the DIG ITAL BOARD and

Automatic module data adjustment

½ During startup observe the display. ½ When three BEEPs can be heard, press the MENU SELECT key.

The version manager is started (see also chapter 4, Firmware update). The display includes the menu item FIRMWARE UPDATE AFTER BOARD CHANGE.

½ Press the softkey to the left of the above mentioned menu item.

The automatic m odule data adjustment is perform ed under software control, firmware updates for microprocessors and programmable devices being performed as well. This may take a few minutes.

∗

available in CMU-Service Kit CMU-Z3 (1100.7690.02)

1100.4903.82 3.41 E-4

MODULE Replacement CMU

Replacing the MODULES: ADC MODULE1, DDC MO DULE1, TXDSP MODULE1, AUC MODULE1 in the DIGITAL BOARD

(see chapter 5, spare part list, Current No. 590 (ADC MODULE1), Current No. 580 (DDC MODULE1), Current No. 600 (TXDSP MODULE1), Current No. 610 (AUC MODULE1) and explosion drawing

1100.1791.01 D sheet 2)

The sandwich modules ADC MODULE1, DDC MODULE1, TXDSP MODULE1 and AUC MODULE1 are installed in the DIGITAL BOARD as plug-in modules. For replacement proceed as follows:

Opening the instrument and removing the modules

the instrument top, slightly push to the right and lift off.

½ Pull of f all the MMCX plug- in cables (us ing a pull-out tool

pull off the module towards the top using the two levers on the right and left.

½ Remove the cover of the higher HVC side (B-side) by loosening the cover screws. ½ Carefully lever out the respective sandwich module (using a pull- out tool

MODULE loosen the two fixing screws before.

∗

) from the top of the DIG ITAL BOARD and

∗

) in the case of the ADC

Installing the new sandwich module and completing the instrument

½ Replace by a new module.

Caution!

Take care to insert the module at the correct position. The heat conducting mats have to be stuck to the components of the modules

(see chapter 5, drawing 1100.1791.01 D sheet 2).

½ Ins ert the DIGIT AL BOARD into the instrum ent in the reverse or der and connect all the MMCX plug-

in cables.

½ Complete the instrument without causing damage to the cables. ½ Connect the instrument to the mains and switch on.

∗

available in CMU-Service Kit CMU-Z3 (1100.7690.02)

1100.4903.82 3.42 E-4

CMU MODULE Replacement

Automatic module data adjustment

½ During startup observe the display. ½ When three BEEPs can be heard, press the MENU SELECT key.

The version manager is started (see also chapter 4, Firmware update). The display includes the menu item FIRMWARE UPDATE AFTER BOARD CHANGE.

½ Press the softkey to the left of the above mentioned menu item.

The automatic m odule data adjustment is perform ed under software control, firmware updates for microprocessors and programmable devices being performed as well. This may take a few minutes.

1100.4903.82 3.43 E-4

MODULE Replacement CMU

Replacing the Option OCXO REFERENCE OSC. CMU-B11 or CMUB12

(see chapter 5, spare part list, Current No. 690 (OCXO REFERENCE OSC. CMU-B11), 710 (OCXO REFERENCE OSC. CMU-B12

The Option OCXO REFERENCE OSC. is f itted at the right side panel below the instrument fan in the CMU. For replacement proceed as follows:

Opening the instrument and removing the OPTION OCXO REFERENCE OSC.

½ Switch off the instrument, pull the mains plug and unscrew the rear-panel feet. ½ Place the instrument onto the front carrying handles, push the tube upwards and take off. ½ Plac e the instrument onto the left side, locate the OPT ION OCX O (see c hapter 5, explosion drawing

1100.0008.01 D sheet 2) and unscrew the two combi scr ews on the m odule support and one com bi screw on the MOTHERBOARD1.

½ Pull off OPT ION OCXO REFERENCE OSC. f rom the MOT HERBOARD1 connector, s lightly tilt and

swing out towards the bottom.

Installing the new OPTION OCXO REFERENCE OSC. and completing the instrument

) and explosion drawing 1100.0008.01 D sheet 2)

½ Ins tall the new OPTION OCXO REFERENCE OSC. in the reverse order. Tighten the three com bi

screws again.

Note: Make sure that the 10-pin connector to the MOTHERBOARD is inserted correctly.

½ Complete the instrument without causing damage to the cables.

Manual OCXO adjustment

½ Connect the instrument to the mains and switch on. ½ Chec k the frequency accuracy and, if necessary, perform m anual OCXO adjustm ent as descr ibed in

chapter 2.

1100.4903.82 3.44 E-4

Rohde and Schwarz CMU200v10 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Tabbed Divider Overview

Contents

CMU Manuals

General

Necessary Documents

Measuring Instruments and Auxiliary Equipment

Test Setups

Tolerance Analysis

Manual Test Procedure

Selftest

Interface Test

Reference Frequencies

TX Frequency Accuracy

TX Frequency Settling Time

TX Level Error

VSWR

TX Level Settling Time

TX Harmonics

TX Fixed Spurious Signals

TX SSB Phase Noise

TX Residual FM

TX Residual AM

TX Carrier/Sideband Suppression, Max. Distorti on

RX Power Meter (Frequency-Selective)

RX Power Meter (Wideband)

RX Harmonics

RX Spurious Response / Image Rejection

RX SSB Phase Noise

RX Residual FM/AM

RX Dynamic/ Average Noise Level

Options for CMU200

Function Test with Mobile Stations (CMU200)

Test Report

Manual Adjustment

Measuring Instruments and Auxiliary Equipment

Preparing the Instrument

Adjusting the + 5 VDC Reference Voltage

Adjusting the 10 MHz Reference Frequency

Automatic Adjustment of Module Data

Preparing the adjustment

Performing the adjustment

Instrument Design and Function Description

Block diagram

Instrument Frame

Rear of Instrument Frame

Front of Instrument Frame

Cooling the Instrument

FRONT MODULE

POWER SUPPLY

MOTHERBOARD

REFERENCE BOARD

Option OCXO REFERENCE OSC. CMU-B11 or B12

RF FRONTEND

RXTX BOARD1

DIGITAL BOARD

Option UNIVERSAL SIGNALLING UNIT CMU-B21

Option AUDIO-GEN. + ANA. CMU-B41

MODULE Replacement

Replacing the FRONT MODULE

Replacing the FRONT MODULE CONTROLLER in the FRONT MODULE

Replacing the Lithium Battery in the FRONT MODULE

Replacing the Hard Disk in the FRONT MO DULE

Replacing the Memory Modules in the FRONT M O DULE

Replacing the LCD and/or DC/AC Converter in the FRONT MODULE

Replacing the Keyboard Membrane and/or Mat on the FRONT MODULE

Replacing the Labeling Panel on the FRONT M O DULE

Replacing the Options FLOPPY DISK DRIVE CMU-B61 or PCMCIA INTERFACE

Replacing the RF FRONTEND

Replacing the REFERENCE BOARD

Replacing the RXTX BOARD1

Replacing the TR-CORRECTION MODULE in the RXTX BOARD1

Replacing the DIGITAL BOARD

Replacing the MODULES: ADC MODULE1, DDC MO DULE1, TXDSP MODULE1, AUC MODULE1 in the DIGITAL BOARD