Bosch Telecom, Inc. Proprietary Information -- Not for Public Disclosure
Exhibit 9 -- User’s Manual
Bosch Telecom Customer Premises Equipment Roof Unit
FCC ID: NNS3214864
Part Number: 3214864-001
Information Provided in this Exhibit:
Operating Instructions for the CPE Roof Unit Transceiver (Stand-Alone Configuration)
The Bosch Telecom Customer Premises Equipment (CPE) Roof Unit transceiver, under
operational conditions, is under control of the SpectraPoint
®
Element Controller and Network
Management software which automatically determine the operating frequencies and power levels
and monitors the performance of the system.
For stand-alone testing such as functional checkout or compliance testing, the Roof Unit
transceiver may be operated at maximum rated output power with automatic power control
disabled. In addition, the Roof Unit may be commanded to various operating frequencies within
the allocated band of operation and modulated with actual and simulated IF input signals.
®
The User Manuals delivered with the SpectraPoint
System describes installation of the entire
system but does not include stand-alone operation of the individual components of the system.
Therefore, this document describes the equipment setup and operation employed for stand-alone
operation of the Transmitter, as applicable to compliance testing.
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Tune-Up Instructions for Operation of a CPE Roof Unit Transmitter
1.0 Scope
This document provides the tune-up instructions for operation of a single SpectraPoint
Customer Premises Equipment (CPE) Roof Unit when operated stand-alone for test
purposes (without the control of the SpectraPoint
2.0 Introduction
The CPE Roof Units, when operating under control of the SpectraPoint® System, receive an
RF reference tone and QPSK modulated RF signals (downstream T1 telephony, digitized
video or digital data) from one or more SpectraPoint
CPE Roof Unit likewise transmits a QPSK modulated RF signal (upstream) from the CPE
Network Interface Unit (NIU) to the SpectraPoint
®
System).
®
Node transmitters (LMDS Hub). The
®
Node receivers (LMDS Hub).
®
For test purposes, the QPSK modulated input signal to the Roof Unit transmitter, at the
appropriate center frequency, modulation, bandwidth and level must be provided by test
hardware and software which is defined in this document.
3.0 Interconnection of Support Equipment
The interconnection of the CPE Roof unit with the test fixture and support equipment is
shown in Figure 9-3. Figure 9-4shows the interconnection of the CPE Roof Unit with the
NIU supplying the IF signal instead of the Test Fixture. The support hardware and software
is shown in Table 9-1.
The Roof Unit will produce a single QPSK phase modulated output at user-selectable
bandwidths (as in the SpectraPoint
®
System).
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Preliminary Release
4.0 Description of the test and support equipment
4.1 Bosch Network Interface Unit (NIU)
The Bosch NIU consists of a Radio Unit (containing a QPSK modem and a frequency
translator) and power supply. The NIU operates from 110 – 240 VAC, 50 – 60 Hz
commercial power.
The modem converts upstream T1 telephony to QPSK modulated baseband and converts
downstream QPSK baseband to T1. The translator upconverts the modulator output
(baseband) signal to L-band and downconverts the L-band signal to baseband. A pictorial
of NIU is shown in Figure 9.1.
The Radio Unit swings out on hinges
to access the attenuator DIP switches
and the Roof Unit cable connectors
Figure 9-1 Customer Premises Equipment (CPE) Network Interface Unit (NIU)
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FCC ID: NNS3214864
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12/15/1998
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The Radio Unit has three multi-pin connectors – dc power, RS-232 command data (serial
port) and T1 interface. The translator module has three type F coaxial connectors -- I/F
output/dc power to the Roof Unit, I/F input/transmit enable from/to the Roof Unit and Video
out to remote equipment (e.g., cable converter).
An RS-232 cable should be connected between the COM port on the Radio Unit and the
COM1 port (DB-9 connector) on a PC running Windows95. Only three pins on this port are
required for communication as shown in the following table:
DB-9, COM1 DB-9, NIU Signal
23Tx
32Rx
57Gnd
This cable is used for communication with the modems and the translator through the
RASCO (Radio Access System COntroller) by using the Bosch Sector Controller program
(SECO).
4.2 AWG-2021 & SMHU-58
This test set is used to generate an arbitrary waveform at the desired IF frequency to
produce a simulated QPSK signals at any specified code rate or channel bandwidth. The
Tektronix AWG-2021 generates the filtered I and Q signals which are applied to the Rohde
& Schwarz SMHU-58. The SMHU-58 uses the I and Q signals to produce a phase
modulated L-Band IF for input to the Roof Unit transmitter through a Roof Unit test fixture.
Both AWG-2021 and SMHU-58 are connected to a PC by HP-IB cable. Tektronix software
(IQSIM) is used to generate the I and Q signals and transfer these signals to the SMHU-58.
4.3 Roof Unit Test Fixture
The Roof Unit Test Fixture consists of a power supply, two bias-T's, two 50-to-75 ohm
transitions, and a resistive voltage divider transmit enable circuit as shown in Figure 9-2.
The dc power for the Roof Unit transmitter is sent to the Roof Unit transmitter via the
Receive
the
the transmitter on or off.
The Roof Unit Transmitter is designed for 75 ohm input and output. The 50-to-75 ohm
transitions match the 50 ohm input or output of the associated test equipment to the 75 ohm
impedance of the Roof Unit.
coaxial cable. The Transmit Enable signal is sent to the Roof Unit transmitter via
Transmit
coaxial cable. A toggle switch on the Test Fixture allows the operator to turn
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FCC ID: NNS3214864
12/15/1998
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The Bias-Ts allow DC power and Transmit enable to be coupled to the 75 ohm coaxial
cables.
The test fixture operates from a 120VAC 60 Hz power source.
I/F Input from
R&S SMHU-58
I/F Output to
Spectrum Monitor
(HP 8564 or Equiv)
120 VAC 60 Hz
Power Input
4.4 Pilot Tone Simulator
50-to-75
Ohm
50-to-75
Ohm
Power Supply
120 VAC In
15.5 Vdc @ 1.5 Amps Out
Bias - T
Bias - T
Figure 9-2 Roof Unit Test Fixture
I/F to Roof Unit
(Transmit In)
Plus
Transmit
I/F from Roof Unit
(Receive Out)
Roof Unit Power
(+15.5 Vdc)
Transmit Enable
Enable
Plus
Switch
A CW signal source (HP 83640L Frequency Synthesizer, or equivalent) provides a
continuous tone at 27510 MHz to the Roof Unit receive port to simulate a pilot tone input.
The nominal power level of this reference is -55dBm.
4.5 CPE Roof Unit
The roof unit is the central piece of equipment for this test. It upconverts a QPSK modulated
IF signal (from either the NIU or from the SMHU-58) to a Ka band channel and provides
power amplification. The roof unit contains an Electronics Board (consisting of a local
oscillator, upconverter, downconverter, and power amplifiers. The antenna
waveguide/feedhorn assembly and reflector are mounted on the chassis. The antenna
feedhorn assembly will generally be removed removed for testing.
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FCC ID: NNS3214864
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4.6 Waveguide Directional Coupler
A waveguide directional coupler (P/N 559A-40/599, or equivalent) is attached to the Roof
Unit at the transmit output waveguide port to facilitate the measurement of output power,
occupied bandwidth and other spectral analysis. A power meter is connected to the 40dB
coupled port and a spectrum analyzer is connected to the through port of the waveguide
directional coupler.
4.7 Power meter
An RF power meter (Anritsu ML2438A, or equivalent) is used to measure the output power
of the roof unit transmitter. All the test measurements are taken at the maximum output
power, +20dBm. The maximum limit for the power meter is +20dBm, therefore it is
connected to the coupled port of the waveguide directional coupler which is 20dB down
from the input port.
4.8 Spectrum Analyzer
A Spectrum Analyzer (model HP 8564E, or equivalent) is used to monitor the output of the
roof unit transmitter and measure its power spectral density and occupied bandwidth. A DC
block must be used on the input to the spectrum analyzer for protection. Also, sufficient
series attenuation should be used to protect the spectrum analyzer from high power levels.
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5.0 Instructions for setting up the system and software
This test system will support two types of tests, one with AWG-2021 and SMHU-58
(Simulated Operation) which can provide a variable bandwidth single-channel QPSK signal
and the other with the Bosch Network Interface Unit (companion unit delivered with the
Roof Unit as subscriber equipment) which can provide single-channel QPSK signals at
three operator-selectable bandwidths.
Hardware and software required to support stand-alone testing of the CPE Roof Unit is
listed in Table 9-1.
Table 9-1 Hardware and Software to Support Operation of the SpectraPoint Roof Unit
in Stand-Alone Test Configuration
Item Description Model Number Manufacturer
1 Roof Unit 3214864-001 Bosch Telecom, Inc.
2 Frequency Synthesizer,
960 MHz at –5 dBm
4 Roof Unit Test Fixture [TBD] Bosch Telecom, Inc.
5 Input Signal Source for
Simulated QPSK
Operation with Arbitrary
Waveform Generator
6 Personal Computer with
Dual RS-485 and IEEE-
488 Interface Cards
7 SECO Test Software Version X.X Bosch Telecom, Inc.
8 IQSIM Test Software Version X.X Tektronix
10 RF Cables (2)
(75 ohm “F”/”F”)
(IF Input & Output)
12 SERSI Test software Version X.X Bosch Telecom, Inc.
Equivalent equipment may be substituted
HP83640B
(or equivalent)
SMHU-58
AWG 2021
133 MHz Pentium
Processor
Hewlett-Packard
Rohde & Schwarz
Tektronix
Gateway
Bosch Telecom, Inc.
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5.1 Test Equipment Setup for Simulated QPSK Modulation
The following instructions present a step-by-step procedure for setting up the system with
the AWG2021 and SMHU58. Refer to Figure 9-3.
HP-IB
Tx IF &
SMHU
Tx IF
ROOF UNIT TEST
FIXTURE
+5V Enable
ROOF
UNIT
WAVEGUIDE
40dB
SPECTRUM
ANALYSER
IQS IM
AWG-2021
110 V A C
PC,
Rx IF &
+15VEnable
PILOT TONE AT
27510MH z
83640L HP CW
GENERATOR
WIN95
HP BENCHLINK
Figure 9-3 Setup For Testing the Roof Unit Using QPSK
Modulation from a Simulated Source
POWER METER
1) Connect a GPIB cable (IEEE-488) between the SMHU-58 and AWG-2021.
2) Connect a GPIB cable between the Personal Computer and the AWG-2021.
3) Connect equal-length (i.e., within 0.25 inches) 50 ohm BNC cables between the I and Q
output ports on the front of the AWG2021 and the I&Q input ports on the back of the
SMHU58.
4) Turn on the PC, AWG2021 and the SMHU-58.
5) Verify that the address on the AWG2021 is set to 14
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6) Verify that the address on the SMHU-58 is set to 28.
7) Double-click on the IQSIM icon on the computer to start the IQSIM software.
8) The IQSIM window should come up and acknowledge that the PC is connected to the
AWG2021 and SMHU58. Click OK.
9) On the IQSIM File menu, select Load File.
10) Select 2.04M-QPSK.IQS. Click OK.
11) Select the modulation menu -> Mod. Type -> PSK -> QPSK
12) The filter function in the SpectraPoint System is a raised cosine. Select modulation ->
Filtering -> Filter Function -> \/
13) To set α of 0.3, select modulation -> Filtering -> Filter Function -> parameter. Type
0.3 in the box and click OK.
14) To set the symbol rate, select Modulation -> Symbol Rate and type 2.04MHz and click
OK.
15) Select 'Transfer to AWG2021' from the transfer menu. After a few seconds, the
computer responds by indicating that the transfer is complete.
16) Set the desired IF frequency and power level on the SMHU58.
17) The power level is set such that the roof unit output power indicated on the power meter
is +20dBm (with correction for waveguide and cable losses).
18) Connect a coax cable from the output of the SMHU58 to the QPSK IN port on the Roof
Unit Test Fixture.
19) Proceed to section 5.3.
---
COS.
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5.2 Test Equipment Setup for Operation with Network Interface Unit (NIU)
The following instructions present a step-by-step procedure for setting up the system with
the Bosch NIU.
The interconnection of different parts is shown in Figure 9-4.
CPE ROOF-UNIT TEST WITH THE NIU
HP-IB
NIU
MODEM
RS-232
COM1 COM2
SECO
HP
BENCHLINK
IF TRANSLATOR
SERSI
PC,
Tx IF &
+5V Enable
Rx IF &
+15VEnable
ROOF
UNIT
PILOT TONE AT
27510MHz
83640L HP CW
GENERATOR
WAVEGUIDE
40dB
POWER METER
SPECTRUM
ANALYSER
WIN95
Figure 9-4 Setup For Testing the Roof Unit Using QPSK Modulation from the NIU
1) Verify a modem card and a translator module are properly installed in their respective
slots in the Radio Unit of the NIU.
2) Connect the RS-232 cable between the COM1 port on the Personal Computer (PC) and
the Radio Unit DB-9 connector.
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On the NIU Radio Unit
DC Power
Tx Port
T1 Input/Output
RS-232 Test
Figure 9-5 Location of Connectors, Push-Pins and Attenuator Dip-Switches
3) Verify a modem card and a translator module are properly installed in their respective
slots in the Radio Unit of the NIU. (Refer to Figure 9-5).
Rcv Port
on the NIU Radio Unit
Attenuator Dip-Switch
SERCI Push-Pins
4) Connect the RS-232 cable between the COM1 port on the Personal Computer (PC) and
the Radio Unit RS-232 Test (DB-9) connector.
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5) Remove the five push-pin jumpers (located just below the receive port of the translator
in the Radio Unit) and connect the SERSI cable between these pins and the COM2 port
of the PC.
6) Apply 120 VAC 60 Hz power to the NIU and turn on the PC.
7) Start the SECO software by double-clicking on SECO icon on the PC.
8) On the right-hand side of the main SECO window, verify that the CPE box is ‘checked’;
click on it to put a ‘check’ in it if it is not.
9) If you check the box, the SECO will ask for a conformation. Click 'Continue'.
10) The message 'THE CONNECTION IS UP NOW' should be present on the lower part of
the main window.
Note: If this message does not appear, SECO is not communicating with the CPE.
Check all cable connections and begin again at step 1.
11) Click on the CPE block of the main SECO window.
12) Click on the OBJECT menu and select ADD NEW CPE MODEM. A new window titled
‘New CPE Modem: 1’ should open.
13) Enter the modem identification number. Click OK.
14) Select the modem and click on the MODIFY button on the right side of the window.
15) Click to put a “check” in the Carrier and Modulator boxes.
16) Click to put a “check” in ESF in the Frame mode section.
17) Click to put a “check” in B8ZS in the line code section.
18) Click to put a “check” in the Symmetrical Tx+Rx parameters box and enter 15 MHz as
the transmit frequency.
19) Click to put a “check” in the Tx Timesl ot button. A new window will open showing the
timeslots for transmit and receive. Click the ‘Set All’ button. The values for Tx and Rx
should read ‘0xffffff’.
20) Verify that the symmetrical and hexadecimal buttons are checked and click OK.
21) Click OK to close the window.
22) Click OK again to close the Modify window.
23) Verify that all the attenuator dip switches on the lower right-hand side of the IF
Translator are turned off (positioned to the left side).
24) Connect the Tx IF port of the translator to the Tx port of the roof unit with a 75-ohm
CATV coaxial cable.
25) On the PC, double-click on the SERSI icon to open the SERSI tool. (This program
allows the IF frequency of the translator to be selected directly in steps of 5MHz instead
of thr ough SECO .
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26) Select the Upconverter frequency from the menu on the screen.
27) Enter the IF frequency at which the system is to be tested.
Proceed to section 5.3
28)
5.3 Setup for Antenna Conducted Measurements on the Roof Unit
1) Remove the radome cover and waveguide/feedhorn assembly from the Roof Unit.
2) Connect the waveguide directional coupler to the transmit waveguide port.
3) Connect a “K” to WR-28 coax-to-waveguide transition to the receive waveguide port.
4) Connect the IF cable from either the Bosch NIU (Translator Tx Output connector) or
from the SMHU58 (RF Output connector) to the TX IN connector on the rear of the Roof
Unit.
5) Connect the RF power meter probe to the coupled port of the waveguide. Enter the
exact coupled loss of the coupled port as an offset in the power meter so that the output
of the transmitter can be directly read directly from the power meter.
6) Connect 8564E Spectrum Analyzer to the through port of the waveguide directional
coupler with a 16dB attenuator.
7) Set the center frequency of the spectrum analyzer to the signal of interest. Set the
resolution bandwidth (RBW) to 30KHz and Video bandwidth (VBW) to 300KHz.
8) Increase the IF power level till the RF output (as measured on the power meter)
indicates +20dBm.
9) The system is now ready to take measurements.
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Exhibit 9
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