Anritsu AWGN MU368060A User Manual

MU368060A

AWGN Unit

Operation Manual

Fourth Edition

•

Read this manual before using the equipment.

•

To ensure that the equipment is used safely, read
the "For Safety" in the MG3681A Digital Modula­tion Signal Generator Operation Manual first.

•

Keep this manual with the equipment.

ANRITSU CORPORATION

Document No.: M-W1955AE-4.0

MU368060A
AWGN Unit
Operation Manual

1 August 2001 (First Edition)
1 December 2003 (Fourth Edition)

Copyright © 2001-2003, ANRITSU CORPORATION.
All rights reserved. No part of this manual may be reproduced without the prior written permission of the
publisher.
The contents of this manual may be changed without prior notice.
Printed in Japan

ii

Equipment Certificate

Anritsu Corporation certifies that this equipment was tested before
shipment using calibrated measuring instruments with direct traceability
to public testing organizations recognized by national research laborato­ries including the National Institute of Advanced Industrial Science and
Technology, and the Communications Research Laboratory, and was
found to meet the published specifications.

Anritsu Warranty

Anritsu Corporation will repair this equipment free-of-charge if a mal­function occurs within 1 year after shipment due to a manufacturing fault,
provided that this warranty is rendered void under any or all of the fol­lowing conditions.

The fault is outside the scope of the warranty conditions described in

•

the operation manual.
The fault is due to mishandling, misuse, or unauthorized modification

•

or repair of the equipment by the customer.
The fault is due to severe usage clearly exceeding normal usage.

•

The fault is due to improper or insufficient maintenance by the cus-

•

tomer.
The fault is due to natural disaster including fire, flooding, earthquake,

•

etc.
The fault is due to use of non-specified peripheral equipment,

•

peripheral parts, consumables, etc.
The fault is due to use of a non-specified power supply or in a non-

•

specified installation location.

In addition, this warranty is valid only for the original equipment pur­chaser. It is not transferable if the equipment is resold.

Anritsu Corporation will not accept liability for equipment faults due to
unforeseen and unusual circumstances, nor for faults due to mishandling
by the customer.

Anritsu Corporation Contact

If this equipment develops a fault, contact Anritsu Service and Sales of­fices at the address at the end of paper-edition manual or the separate file
of CD-edition manual.

iii

Notes On Export Management

r

r

f

This product and its manuals may require an Export License/Approval by

the Government of the product's country of origin for re-export from you

country.

Before re-exporting the product or manuals, please contact us to confirm

whether they are export-controlled items or not.

When you dispose of export-controlled items, the products/manuals are

needed to be broken/shredded so as not to be unlawfully used for military

purpose.

Disposing of Product

This equipment uses chemical compound semiconductors including
arsenide. At the end of its life, the equipment should be recycled o
disposed properly according to the local disposal regulations.

Trademark and Registered Trademark

MS, Microsoft, MS-DOS and Windows are the registered trademark o
Microsoft Corporation in the United States and/or other countries.

IBM and AT are the registered trademark of International Business Ma­chines Corporation.

NI-488.2TM is a registered trademark of National Instruments Corpora­tion.

iv

CE Conformity marking

Anritsu affixes the CE Conformity marking on the following product (s) in

accordance with the Council Directive 93/68/EEC to indicate that they

conform with the EMC and LVD directive of the European Union (EU).

CE marking

1. Product Model

Plug-in Units: MU368060A AWGN Unit

2. Applied Directive and Standards

When the MU368060A AWGN Unit is installed in the MG3681A, the

applied directive and standards of this Unit are conformed to those of

the MG3681A main frame.

PS: About main frame

The kind of main frame (a measuring apparatus) will be to increase.

Please, contact us about the newest information of the main frame.

v

C-tick Conformity marking

Anritsu affixes the C-tick marking on the following product (s) in accor-

dance with the regulation to indicate that they conform with the EMC

framework of Australia/New Zealand.

C-tick marking

1. Product Model

Plug-in Units: MU368060A AWGN Unit

2. Applied Directive and Standards

When the MU368060A AWGN Unit is installed in the MG3681A, the

applied directive and standards of this Unit are conformed to those of

the MG3681A main frame.

PS: About main frame

The kind of main frame (a measuring apparatus) will be to increase.

Please, contact us about the newest information of the main frame.

vi

About This Manual

This operation manual offers an overview, sample measurement and re-

mote control of the MU368060A AWGN Unit.

The MU368060A AWGN Unit is mounted to the MG3681A Digital Modu-

lation Signal Generator.

represents a panel key.

The "MG3681A Digital Modulation Signal Generator Operation Manual"

is provided separately. Refer to them together with this manual.

I

Table of Contents

About This Manual........................................ I

Section 1 Overview.................................... 1-1

1.1 Product Outline............................................................. 1-2

1.2 Product Configuration................................................... 1-3

Section 2 Storage and Transportation..... 2-1

2.1 Precautions for Long-term Storage .............................. 2-2

2.2 Repacking and Transportation ..................................... 2-3

Section 3 Operation Overview .................. 3-1

3.1 Setting the Parameters................................................. 3-2

3.2 Power Accuracy for the Calculated Bandwidth ............ 3-6

Section 4 Sample Measurement ............... 4-1

4.1 Evaluation Measurement for the Receiver ................... 4-2

Section 5 Sample Calibration ................... 5-1

5.1 Calibration of the Output Level..................................... 5-2

Section 6 AWGN Internal Adder

Function..................................... 6-1

6.1 Product Outline............................................................. 6-2

6.2 Operation when Selecting W-CDMA ............................ 6-3

6.3 Function Details............................................................ 6-6

6.4 Operation when Selecting 1xEVDO ............................. 6-8

6.5 Function Details when Selecting 1xEVDO ................... 6-10

II

Section 7 Remote Controls ....................... 7-1

7.1 Device Message List by Function................................. 7-2

7.2 Alphabetical Device Message List................................ 7-5

7.3 Device Message List for each AWGN Internal Adder

Functions when Selecting W-CDMA ............................ 7-12

7.4 Alphabetical Device Message List for AWGN

Internal Adder Function when Selecting W-CDMA ...... 7-13

7.5 Device Message List for AWGN Internal Adder

Functions When Selecting 1xEVDO............................. 7-17

7-6 Alphabetical Device Message List for AWGN

Internal Adder Function When Selecting 1xEVDO....... 7-18

Section 8 Performance Test...................... 8-1

8.1 Performance Test ......................................................... 8-2

8.2 Devices used in Performance Test .............................. 8-3

8.3 RF Output Level Accuracy............................................ 8-4

8.4 In-band Power Calculation Accuracy ........................... 8-5

Appendix.................................................... App-1

Appendix A Specifications................................................... A-1

Appendix B Initial Value List................................................ B-1

Appendix C Performance Test Result Sheet ...................... B-1

Index........................................................... Index-1

III

IV.

Section 1 Overview

This section describes the product outline and manual configuration for

the MU368060A AWGN Unit.

1.1 Product Outline........................................................... 1-2

1.2 Product Configuration ................................................ 1-3

1-1

Section 1 Overview

1.1 Product Outline

The MU368060A is an AWGN (Additive White Gaussian Noise) Unit

mounted on the MG3681A Digital Modulation Signal Generator (hereafter,

main frame).

Mounting the MU368060A on the main frame enables noise signals to be

generated for reception sensitivity test of CDMA 2000 modulation radio

equipment.

1-2

1.2 Product Configuration

The standard configuration of the MU368060A is shown below. When

unpacking, check that the listed products are provided. If a missing or

damaged component is found, please contact Anritsu or its distributors.

1.2 Product Configuration

Item

Main Unit MU368060A AWGN Unit 1
Accessory W1955AE Operation Manual 1

Model name and

number

Part name

Quan-

tity

Remarks

1-3

Section 1 Overview

1-4.

Section 2 Storage and Transportation

This section describes precautions on storage and transportation of

MU368060A.

2.1 Precautions for Long-term Storage............................ 2-2

2.2 Repacking and Transportation ................................... 2-3

2-1

Section 2 Storage and Transportation

2.1 Precautions for Long-term Storage

Avoid storing the MU368060A in places where:

It may be exposed to direct sunlight

•

It is dusty

•

It is humid and condensation may form

•

It may be exposed to active gases

•

It may oxidize

•

The following temperature and humidity exists

•

Temperature : < –20°C, > 60°C

Humidity : ≥ 90%

Recommended Storage Conditions

When MU368060A is stored for long periods, we recommend observing the

following conditions in addition to those described above:

Temperature : 0 to 50°C

•

Humidity : 40 to 80%

•

A location where the temperature and humidity are stable throughout

•

the day.

2-2

2.2 Repacking and Transportation

Precautions on transportation of MU368060A are shown below.

Repacking

Use the original packing material (box), if available. If not available,

follow the procedures shown below to repack the MU368060A.

[1] Cover the MU368060A with a conductive vinyl.

[2] Prepare a cardboard/wood/aluminum box large enough to store the

MU368060A and the cushioning material to cover it.

[3] Put the MU368060A into the box. Then put cushioning material

around it to prevent it from moving in the box.

[4] Firmly close the box with packing string, adhesive tape or bands.

Transportation

During transportation, avoid vibration where possible and maintain the

"Recommended Storage Conditions" above.

2.2 Repacking and Transportation

2-3

Section 2 Storage and Transportation

2-4.

Section 3 Operation Overview

This section explains the basic screens when MU368060A is mounted on

the main frame.

3.1 Setting the Parameters .............................................. 3-2

3.2 Power Accuracy for the Calculated Bandwidth .......... 3-6

3-1

Section 3 Operation Overview

3.1 Setting the Parameters

When

pears. This screen is for basic parameter settings on digital modulation.

Details on the Main screen settings are described below.

Digital Mod

is pressed, the key lamp lights and the Main screen ap-

[1] I/Q Mod.

When Digital Modulation is set to “On”, this unit outputs noise.

When set to “Off”, it outputs CW signal.

Setting item : Int, Ext, Off

[2] System

Sets the communication system.

Setting item : NOISE1

[3] Noise

Sets the bandwidth for the noise to be generated.

Setting range : 1.5 to 16 MHz, resolution: 1 kHz

[4] Calculated

Sets the calculated bandwidth.

Setting range : 10 to 80% of the inputted setting value for the

noise bandwidth

Resolution : 1 kHz

3-2

3.1 Setting the Parameters

[5] Calculated Level

Calculates the calculated level internally based on the inputted cal-

culated bandwidth. Displays the power ratio of the band specified

in [4] to the total power for the RF output of the signal generator.

[6] (Absolute)

Displays the power in the calculated bandwidth.

Displayed value = RF output level + Calculated Level

3-3

Section 3 Operation Overview

Calculating the power for the calculated bandwidth

•

The noise generator can be explained by the following three parameters.

Noise Bandwidth:

Sets the band for the noise to be generated.

Bandwidth set here is for the flat part of the noise as shown in the

figure below.

Calculated Bandwidth:

Normally, same as the channel bandwidth for the communication

system to be measured.

Calculated Level:

Displays the power ratio of the calculated bandwidth (

the total power of the spectrum in the figure below.

Carrier frequency

part) to

Setting value for the

calculated bandwidth

Setting value for the noise

bandwidth

Ideal spectrum for the noise signal

The power within the calculated bandwidth is therefore figured out with

the following formula:

The power within the calculated bandwidth = RF output level (total

power) + Calculated level

… (1)

3-4

3.1 Setting the Parameters

Example:

Suppose that the following parameters are set for this unit:

Output Level : −10 dBm

Digital Mod : On

System : Noise1

Noise Bandwidth : 7.68 MHz

Calculated Bandwidth : 3.84 MHz

From Formula (1),

Power within the calculated bandwidth

RF output level + Calculated level

=

10 dBm + (−3.45 dB)

= −

13.45 dBm

= −

Therefore, the power within the calculated

bandwidth for the RF output is –13.45 dBm.

The power –13.45 dBm is displayed at “(Ab-

solute)”.

3-5

Section 3 Operation Overview

3.2 Power Accuracy for the Calculated Bandwidth

From Formula (1) in Section 3.1, accuracy for the power within the calcu-

lated bandwidth varies depending on the accuracy for the RF output level

and the power calculation level. When the user does not perform calibra-

tion, accuracy is the added value of these two error elements.

Accuracy of the power within the calculated bandwidth

RF output level error + Calculated level error .................(2)

=

(Level accuracy at CW ± 3.0 dB) + (± 0.6 dB or ± 2.0 dB)* ....(3)

=

*: ±0.6 dB when the setting value for noise bandwidth

is ≤8 MHz.

±2.0 dB when the setting value for noise bandwidth

is >8 MHz.

RF output level accuracy

•

The standard for the RF output level accuracy is ±3 dB level accuracy at

CW. However, it is relatively easy to calibrate it by using the power

meter. When calibrated, the error for the RF output level can be

reduced to the measurement accuracy of the power meter.

Calculated level accuracy

•

The calculated level displayed is figured out under ideal conditions and

with the frequency characteristic for the analogue circuit flat. On the

other hand, the actual RF output signal may not be flat according to the

frequency characteristic for the analogue circuit. The distortion of

frequency characteristic results in an error in the calculated level.

3-6.

Carrier frequency

Level range

Setting value for the

calculated bandwidth

Setting value for the noise bandwidth

Spectrum for MU368060A

Section 4 Sample Measurement

This section explains sample measurement when MU368060A is mounted

on the main frame.

4.1 Evaluation Measurement for the Receiver................. 4-2

4-1

Section 4 Sample Measurement

A

py

A

[

A

py

A

[

4.1 Evaluation Measurement for the Receiver

The evaluation measurement procedure for the W-CDMA receiver is de-

scribed below.

Setup

Wanted signal source

MG3681A

Digital Modulation
Signal Generator
250kHz -3GHz
3-6GHz (Option)

Display Off/On

Panel Lock

Remote

Preset

Contrast

Local

On

Stby

Freq

3 000.000 000 00

Level

dBm

-123.15

Modulation Mode : I,Q Source :

System : [PDC ]

Mod : π/4 DQPSK Bit Rate : 4 2.0 kbit/s
Filter : [RNYQ] α=0.50

Burst : [On]
Pattern : [UP TCH ]
Trigger : [Int]

Slot 0 Slot 1 Slot 2

UP TCH

△ △

TTL

1

Digital Input

3

2

TTL TTL5TTL

TTL

Int]

I/Q Input / I/Q Output

4

Frequency

MHz

Relative

Frequency

Invrement

Step Value

I / Wide AM

Function

Offset

Frequency

F1

Value

Offset
On Off

On Off

Current

IQ InputSymbol Clk Clock Data

Level

F2

Digital Mod

F3

Shift

Analog Mod

F4

D

Memory

F5

Config

F6

Pulse

Q

Q

I

Ω

50

TTL

Ω

Ω

Ω

50

50

50

EditCursor

Step

Set

Cancel

Knob Hold

Resolution

CE

BS

Modulation

dB

FEScreen Co

Digital

s /dBµV987

GHz/dBm

%

CB

Analog

MHz/mW ms / V654

Save

RF Output

kHz/nW rad / mV321

RPP Reset

Off

>○< On●

Recall

Hz / fW deg / µV

-/+・0

InputI/Q Output

Output

RF

F

AM

!

FM/φM

Reverse Power
50W Max≦1GHz
25W Max＞1GHz

±50V DC Max

Ω

Ω

Ω

600

600

600

Ω

50

Two-signal coupler

Noise signal source

MG3681A + MU368060A

MG3681A + MU368040A + MX368041A/B

MG3681A

Digital Modulation
Signal Generator
250kHz -3GHz
3-6GHz (Option)

Display Off/On

Panel Lock

Preset

Contrast

Remote

Local

On

Stby

Freq

3 000.000 000 00

Level

dBm

-123.15

Modulation Mode : I,Q Source :

System : [PDC ]

Mod : π/4 DQPSK Bit Rate : 4 2.0 kbit/s
Filter : [RNYQ] α=0.50

Burst : [On]
Pattern : [UP TCH ]
Trigger : [Int]

Slot 0 Slot 1 Slot 2

UP TCH

△ △

Digital Input

I/Q Input / I/Q Output

3

2

1

TTL TTL5TTL

TTL

TTL

Frequency

MHz

On Off

Int]

Relative
On Off

Current

Frequency

Invrement

Step Value

IQ InputSymbol Clk Clock Data

4

I / Wide AM

Function

Offset

Frequency

F1

Value

Offset

Level

F2

Digital Mod

F3

Shift

Analog Mod

F4

D

Memory

F5

Config

F6

Pulse

Q

Q

I

Ω

50

TTL

Ω

Ω

Ω

50

50

50

EditCursor

Step

Set

Cancel

Knob Hold

Resolution

CE

BS

Modulation

dB

FEScreen Co

Digital

s /dBµV987

GHz/dBm

%

CB

Analog

MHz/mW ms / V654

Save

RF Output

kHz/nW rad / mV321

RPP Reset

Off

>○< On●

Recall

Hz / fW deg / µV

-/+・0

InputI/Q Output

Output

RF

F

AM

!

FM/φM

Reverse Power
50W Max≦1GHz
25W Max＞1GHz

±50V DC Max

Ω

Ω

Ω

600

600

600

Ω

50

Measurement procedure

[1] Set the frequency for the wanted signal source to the testing fre-

quency.

Receiver

[2] Set the output level of the unit to the proper level for the input con-

nector of the receiver.

[3] Set the unit to W-CDMA modulation.

[4] Set the modulation parameter of the unit so that the receiver can re-

ceive the signal.

[5] Set the frequency for the noise signal source to that set in Step [1].

[6] Set the noise bandwidth for the unit to that wide enough for the

wanted signal.

[7] Set the calculated bandwidth for the unit to that for the wanted sig-

nal.

[8] Set the output level for the unit to the optimum level for the input

connector of the receiver. However, it should be higher by the noise

band calculation level.

[9] Measure the reception sensitivity of the receiver.

4-2.

Section 5 Sample Calibration

This section describes the calibration procedure for the output level when

using the MU368060A AWGN Unit. This example uses a W-CDMA sys-

tem.

5.1 Calibration of the Output Level................................... 5-2

5.1.1 Adjusting the output level for

the signal generator ....................................... 5-2

5.1.2 Adjusting the level at the input

connector terminal of the receiver ................. 5-3

5.1.3 Measuring the level of the outputted noise .... 5-4

5.1.4 Calibration using the offset setting

function of the RF output level ....................... 5-5

5-1

Section 5 Sample Calibration

5.1 Calibration of the Output Level

5.1.1 Adjusting the output level for the signal generator

Calibration of the output level at the RF connector terminal for the signal

generator is explained here.

A sample power setting with a 7.68 MHz noise signal bandwidth and –20

dBm/3.84 MHz at the RF output connector terminal is shown below.

<Calibration procedure>

(1) Set the following parameters for this unit.

Digital Mod : On

System : Noise1

Noise Bandwidth : 7.68 MHz

Calculate Bandwidth : 3.84 MHz

(2) Calculate the total noise power for –20 dBm/3.84 MHz.

Read the Calculated Level on the display. With the parameter set in

Step (1), this value should be –3.45 dBm. Figure out the total noise

power using the formula below:

Total power = –20 dBm – (–3.45 dB) = –16.55 dBm

(3) Connect the power meter to the RF output connector for this unit.

Anritsu

Mｷ3681A

POWER METER ML4803A

Anritsu

(4) Set the output level for this unit so that the indication value of the

power meter becomes the total power found in Step (2). This com-

pletes calibration to the –20 dBm/3.84 MHz noise level at the RF

output connector terminal.

<Level accuracy>

Consider the level accuracy for the setting of this calibration method. It

is figured out by the following formula:

Level accuracy

= Band calculated accuracy (Calculated Level accuracy) + power me-

ter accuracy

= ±0.6 dB (when the noise band is 7.68 MHz) + power meter accu-

racy

5-2

5.1 Calibration of the Output Level

0

<Points>

In this calibration method, the output level accuracy of this unit can be ig-

nored because the output level is directly measured by the power meter.

Conversely, by changing the output level of this unit after calibration, its

accuracy affects the level accuracy. The output level accuracy applies be-

cause the step accuracy (relative accuracy) of the output level is not speci-

fied for this unit. In this case, the noise level accuracy is the sum of the

level accuracy of this unit and the power meter accuracy.

5.1.2 Adjusting the level at the input connector terminal of the receiver

Calibration of the noise level at the input connector terminal of the receiv-

er is explained here.

A sample power setting with a 7.68 MHz noise signal bandwidth and –73

dBm/3.84 MHz at the input connector terminal of the receiver is shown

below.

<Calibration procedure>

(1) Set the following parameters for this unit.

Digital Mod : On

System : Noise1

Noise Bandwidth : 7.68 MHz

Calculate Bandwidth : 3.84 MHz

(2) Calculate the total noise power for –73 dBm/3.84 MHz.

Read the Calculated Level on the display. With the parameter set in

Step (1), this value should be –3.45 dBm. Figure out the total noise

power using the formula below:

Total power = –73 dBm – (–3.45 dB) = –69.55 dBm

(3) Set the RF output for the desired frequency signal generator to Off

and then connect the power meter to the input connector terminal of

the receiver.

Wanted signal source

Anritsu POWER METER ML4803A

Noise signal source

Anritsu

MA1612A

LOSS 15.0dB

IMPEDANSE 5

Ω

MAX POWER 1W

Receiver

5-3

Section 5 Sample Calibration

(4) Set the output level for this unit so that the indication value of the

power meter becomes the total power found in Step (2). This com-

pletes calibration to the –73 dBm/3.84 MHz noise level at the input

connector terminal of the receiver.

<Level accuracy>

See Section 5.1.1 for level accuracy.

<Points>

When –69.55 dBm is not able to be directly measured by the power meter,

insert a fixed attenuator into the receiver input and perform calibration

up to the necessary level of attenuation.

However, the calibration value for the attenuation of the fixed attenuator

should be measured in advance. Calibration accuracy for the fixed at-

tenuator is added to the level accuracy.

5.1.3 Measuring the level of the outputted noise

Measurement of the noise signal level outputted at an unknown level is

explained here.

A sample power setting with a 7.68 MHz noise signal bandwidth and 3.84

MHz calculated bandwidth is shown below.

< Measurement procedure>

(1) The following parameters should be set for this unit.

Digital Mod : On

System : Noise1

Noise Bandwidth : 7.68 MHz

Calculate Bandwidth : 3.84 MHz

(2) Measure the total noise power using the power meter.

Read the Calculated Level on the display. With the parameter set in

Step (1), this value should be –3.45 dBm. Figure out the noise power

for the calculated bandwidth using the formula below:

Noise power for the calculated bandwidth = power meter indication +

(–3.45 dB)

<Level accuracy>

Consider the level accuracy for this measurement. It is figured out using

the following formula:

Level accuracy

= Band calculated accuracy (Calculated Level accuracy) + power

meter accuracy

= ±0.6 dB (when the noise band is 7.68 MHz) + power meter ac-

curacy

5-4

5.1 Calibration of the Output Level

5.1.4 Calibration using the offset setting function of the RF output level

Using the offset setting function of the RF output level of the MG3681A

with “(Absolute)” display, the noise level can be easily calibrated, as de-

scribed below.

A sample on the same condition as that in Section 5.1.3 is shown below.

<Measurement procedure>

(1) Set the MU368060A as in Section 5.1.3 (1).

(2) Measure the total noise power using the power meter.

(3) Set the offset level of the MU368060A. The set value is as follows:

Set value of offset level ＝ Reading of power meter － Set value of

RF output level of MU368060A

(4) Press Offset On Off to set Offset mode to On.

(5) The value displayed on “(Absolute)” becomes the noise power for the

calculated bandwidth.

<Level accuracy>

Immediately after calibration by power meter, the accuracy of the noise

power value displayed on “(Absolute)” is shown in the formula below:

Level accuracy = Band calculated accuracy (Calculated Level accuracy) +

power meter accuracy

If the MU368060A output level is changed after calibration by power me-

ter, the accuracy of the noise power value displayed on Calculate Absolute

Level is shown in the formula below:

Level accuracy = Band calculated accuracy (Calculated Level accuracy) +

RF output level accuracy

5-5

Section 5 Sample Calibration

5-6.

Section 6 AWGN Internal Adder Function

This section explains the AWGN internal adder function available when

MU368060A is mounted with both MU368040A and MX368041A/B.

6.1 Product Outline........................................................... 6-2

6.2 Operation When Selecting W-CDMA ......................... 6-3

6.2.1 Main screen ................................................... 6-3

6.2.2 Scrambling Code & Others Edit screens ....... 6-5

6.3 Function Details.......................................................... 6-6

6.4 Operation When Selecting 1xEVDO .......................... 6-8

6.5 Function Details When Selecting 1xEVDO ................ 6-10

6-1

Section 6 AWGN Internal Adder Function

6.1 Product Outline

The MU368060A is capable of outputting I/Q and RF signals added with

W-CDMA uplink modulation wave and noise when mounted with both the

MU368040A and the MX368041A/B.

W-CDMA modulation wave and noise can be internally added in the fol-

lowing conditions:

Simulation Link Up Link
W-CDMA Phase 1
Chip Rate 3.84 Mcps
Maximum Code Number 1 to 6

Noise parameters that can be set at noise internal addition are shown be-

low:

Noise Bandwidth Chip Rate x1.5 or x2.0
C/N –30.0 to –20.0 dB (0.2 dB step)

–19.9 to –8.0 dB (0.1 dB step)

In addition, the MU368060A is capable of outputting I/Q and RF signals

added with a single carrier 1xEVDO modulation wave and noise when

mounted with both the MU368040A and the MU368030A+MX368033A.

1xEVDO modulation wave and noise can be internally added in the fol-

lowing conditions.

Over Sampling 8
Carrier 1

Note:

A single carrier 1xEVDO modulation wave, which is provided for

MX368033A as a standard, is satisfied with the above conditions.

Noise parameters that can be set at noise internal addition are shown be-

low:

Noise Bandwidth Chip Rate x4, x3, x2 or Tone
C/N –30.0 to +30.0 dB (0.1 dB step)

6-2

6.2 Operation When Selecting W-CDMA

6.2 Operation When Selecting W-CDMA

When W-CDMA is selected for System while setting Up Link for Simula-

tion Link, setting items for the AWGN internal adder function appear in

the Digital modulation setting screen for W-CDMA modulation.

Items not specifically mentioned can be set in the same as for the

MX368041A/B. Refer to the "MX368041A or MX368041B Operation

Manual."

6.2.1 Main screen

[1] W-CDMA Phase

Setting a value other than "1" for Phase turns the AWGN internal ad-

der function Off.

[2] Simulation Link

Setting "Down Link" for Simulation Link turns the AWGN internal

adder function Off.

[3] Chip Rate

Setting a value other than "3.84 Mcps" for Chip Rate turns the noise

internal adder function Off.

[4] Filter Mode

This item is disabled while AWGN is set to On.

[5] Maximum Code Number

Selecting a value of "7" or larger for Simulation Link turns the AWGN

internal adder function Off.

6-3

Section 6 AWGN Internal Adder Function

[6] Output Level

Displays [(noise power for all bands)+(total power for multiplex chan-

nels of W-CDMA modulation wave)]

[7] AWGN

Sets the AWGN internal adder function On/Off. When set to Off, the

MX368041A/B standards apply to all items. When set to On, the

MU368060A, not the MX368041A/B, standards apply.:

Carrier frequency range

•

Number of multiplex channel

•

I/Q output signal

•

RF output signal

•

Setting item: On, Off

Initial value: Off

[8] C/N

Sets the ratio between noise power within 3.84 MHz bandwidth and

W-CDMA modulation wave power. Note that this is not the ratio for

noise power of all bands.

Setting range: –30.0 to –20.0 dB (0.2 dB step)

–19.9 to –8.0 dB (0.1 dB step)

Initial value: –20.0 dB

[9] Noise

Displays the ratio between Output Level and noise power within 3.84

MHz bandwidth.

When a warning message "Power under 0dB" is displayed, the dis-

played value does not match with actual output.

[10] Wanted

Displays the ratio between Output Level and W-CDMA modulation

wave power.

When a warning message "Power under 0dB" is displayed, the dis-

played value does not match with actual output.

6-4

6.2 Operation When Selecting W-CDMA

6.2.2 Scrambling Code & Others Edit screens

[1] Noise Bandwidth

Sets the noise bandwidth.

Setting item: Chip Rate x 1.5, Chip Rate x 2

Initial value: Chip Rate x 2

6-5

Section 6 AWGN Internal Adder Function

q

y

(

)

6.3 Function Details

Image diagram for the AWGN internal adder function is shown below:

Noise

AWGN

Carrier fre

3.84 MHz

7.68 / 5.76 MHz

uenc

W-CDMA
Modulation Wave

Noise is added to the same carrier as the W-CDMA modulation wave and

outputted as I/Q and RF signals.

Setting and displayed values for the AWGN internal adder function are

shown below:

[1] C/N

Is the ratio between noise power within 3.84 MHz bandwidth and W-

CDMA modulation wave power. The total power of noise and W-

CDMA modulation wave is fixed to the set value for RF Level.

Therefore, the lower C/N is set, the larger the noise power becomes

and the lower the W-CDMA modulation wave power becomes. To

change the noise power while fixing W-CDMA modulation wave

power, both C/N and RF Level settings must be changed.

[2] Output Level

Is total of noise power and W-CDMA modulation wave power. Same

as the setting value for RF Level while using the AWGN internal ad-

der function.

6-6

6.3 Function Details

[3] Wanted

Is the ratio between Output Level and W-CDMA modulation wave

power. This value is correct without a warning message "Power Un-

der 0 dB" displayed.

W-CDMA modulation wave power = Output Level + Wanted

[4] Noise

Is the ratio between Output Level and noise power within 3.84 MHz

bandwidth. This is not the ratio for power of all bands. The differ-

ence between this value and the display value for Wanted is the same

as the setting value for C/N.

Note the following points when using the AWGN internal adder function:

When AWGN is set to On, the noise power and W-CDMA modulation

•

wave power are set to match the setting value for RF Level. When

AWGN is set to Off, W-CDMA modulation wave power is set to match

the setting value for RF Level. For this reason, the transmission

power for W-CDMA modulation wave changes when AWGN is switched

between On and Off.

Setting values such as for C/N and the display value such as for Wanted

•

become correct only when the total level for W-CDMA multiplex

channels is 0 dB. Use the AWGN internal adder function under

conditions whereby a warning message "Power Under 0 dB" is not

displayed.

6-7

Section 6 AWGN Internal Adder Function

6.4 Operation When Selecting 1xEVDO

When 1xEVDO is selected for System, additionally, Over sampling is 8 and

1xEVDO modulation wave of single carrier is set to Pattern, setting items

of AWGN internal adder function appear in the Digital modulation setting

screen for 1xEVDO modulation.

Items not specially mentioned can be set in the same as for the

MX368033A. Refer to the “MX368033A” operation manual.

6-8

[1] AWGN

Sets the AWGN internal adder function On/Off. When set to Off, the

MX368033A standards apply to all items. When set to On, the

MU368060A, not the MX368033A, standards apply to the following

specifications.

Carrier frequency range

•

I/Q output signal

•

RF output signal

•

Setting item: On, Off

Initial value: Off

[2] C/N

Sets the ratio between noise power within 1.23 MHz band and

1xEVDO modulation wave power. Note that this is not the ratio for

noise power of all bands.

Setting range: –30.0 to +30.0 dB (0.1 step)

Initial value: –30.0 dB

6.4 Operation When Selecting 1xEVDO

[3] Wanted

Displays power of 1xEVDO modulation wave.

[4] Displays noise power within 1.23 MHz band.

[5] Noise Bandwidth

Sets noise bandwidth and selected in multiples of Calculated Band-

width.

When Tone is selected, the tone signal of the same power as selected

for x4 is added, but not for AWGN.

Two times offset of Chip Rate from carrier frequency is added to the

frequency of tone signal.

Setting items: CalcBWx4, CalcBWx3, CalcBWx2, Tone

Initial value: CalcBWx4

[6] Calculated Bandwidth

Displays calculated bandwidth and fixed with1.23 MHz.

6-9

Section 6 AWGN Internal Adder Function

6.5 Function Details When Selecting 1xEVDO

Image diagram for the AWGN internal adder function is shown below:

Carrier frequency

Noise (AWGN)

1xEVDO Modulation
Wave

1.23 MHz

1.23 MHz x4/x3/x2

Noise is added to the same carrier as the 1xEVDO modulation wave and

outputted as I/Q and RF signal.

Setting and displayed values for the AWGN internal adder function are

shown below:

[1] C/N

Sets the ratio between noise power within 1.23 MHz band and 1xEVO

modulation wave power.

The total power of noise and 1xEVDO modulation wave is fixed to the

setting value for RF Level.

Therefore, the lower C/N is set, the larger the noise power becomes.

To change the noise power while fixing 1xEVDO modulation power,

both C/N and RF Level settings must be changed.

[2] Wanted

Displays power of 1xEVDO modulation wave.

6-10

6.5 Function Details When Selecting 1xEVDO

[3] Noise

Displays noise power within 1.23 MHz band. This is not power for

all noise bands.

The difference between this value and the display value for Wanted is

the same as the setting vale for C/N.

Note the following points for using the AWGN internal adder function.

When AWGN is set to On, the power for 1xEVDO modulation wave are

•

set to match the setting value for RF Level. In addition, when AWGN

is Off, the power for 1xEVDO modulation wave is set to the setting for

RF Level.

For this reason, the transmission power for 1xEVDO modulation wave

changes when AWGN is switched between On and Off.

6-11

Section 6 AWGN Internal Adder Function

6-12.

Section 7 Remote Controls

This section provides the function list for the GPIB device messages and de-

scribes the messages in alphabetical order, when the MU368060A AWGN

Unit is mounted on the main frame.

For a description of the other remote controls, refer to Section 6 "Remote

Controls" in the "MG3681A Main Unit Operation Manual."

7.1 Device Message List by Function .............................. 7-2

7.2 Alphabetical Device Message List ............................. 7-5

7.3 Device Message List for AWGN Internal Adder

Functions When Selecting W-CDMA ......................... 7-12

7.4 Alphabetical Device Message List for AWGN

Internal Adder Functions When Selecting W-CDMA . 7-13

7.5 Device Message List for AWGN Internal Adder

Functions When Selecting 1xEVDO .......................... 7-17

7.6 Alphabetical Device Message List for AWGN

Internal Adder Function When Selecting 1xEVDO .... 7-18

7-1

Section 7 Remote Controls

7.1 Device Message List by Function

Command messages and query messages

The header of the command message is a reserved word represented by

uppercase alphanumeric characters. The header field of the query mes-

sage ends with "?". The argument section of the command message and

the query message can contain multiple arguments delimited by a separa-

tor ",". Argument types are explained below:

[1] Uppercase characters : reserved words

[2] Numeric : reserved words

[3] Lowercase characters in the argument section:

f (Frequency) : numeric data (NR1, NR2 and NR3)

Suffix code : GHZ, GZ, MHZ, MZ, KHZ, KZ, HZ

When the unit is omitted, HZ applies.

l (Level) (relative value) : numeric data

(NR1, NR2 and NR3-formats)

Suffix code : DB

When the unit is omitted, DB applies.

n (integer without unit) : numeric data (NR1-format)

r (real number without unit) : numeric data (NR2-format)

h (hexadecimal without unit) : numeric data (hexadecimal)

s (string) : alphanumeric character enclosed in " " or ' '.

7-2

7.1 Device Message List by Function

Response message

A response message is returned to the external controller when a query

message is received, which is represented in the form "response header

field + response data section". Multiple response data may be included

by delimiting the response data section by a separator ",". Response data

types are explained below:

[1] Uppercase characters : reserved word

[2] Numeric : reserved word

[3] Lowercase characters in the argument section:

f (Frequency) : numeric data (NR1-format)

Suffix code : HZ

ｌ

(Level) (relative form) : numeric data (NR2-format)

1

Suffix code : DB

l

(Level) (absolute form): numeric data (NR2-format)

2

Suffix code : DBm

n (integer without unit) : numeric data (NR1-format)

r (real number without unit) : numeric data (NR2-format)

h (hexadecimal without unit): numeric data (hexadecimal)

Note:

When the header is set to Off, the header of the response message

and the suffix code of the numeric data are not outputted. For

header On/Off settings, refer to the "MG3681A Operation Manual."

7-3

Section 7 Remote Controls

Device message list

<Common>

Item Device message

Controlled item

I/Q Source Internal

I/Q Source External

I/Q Source OFF

System NOISE1 SYS NOISE1 SYS? SYS NOISE1

<Noise Generation>

Item Device message

Controlled item

Bandwidth (Noise)

Bandwidth (Calc.)

Power in Calc. B.W. ----- CALCLVL?

Absolute Power in
Calc. B.W.

Command

message

MODE INT
IQSRC INT

MODE EXT
IQSRC EXT

MODE OFF
IQSRC OFF

Command

message

NOISEBW
bandwidth

CALCBW
bandwidth

----- CALCALVL?

Query

message

MODE?
IQSRC?

MODE?
IQSRC?

MODE?
IQSRC?

Query

message

NOISEBW?
(bandwidth)

CALCBW?
(bandwidth)

Response

message

MODE INT
IQSRC INT

MODE EXT
IQSRC EXT

MODE OFF
IQSRC OFF

Response

message

NOISEBW

CALCBW

CALCLVL
(level value)

CALCALVL
(level value)

7-4

7.2 Alphabetical Device Message List

7.2 Alphabetical Device Message List

<Example>

Message header

FREQ

Function

Command message FREQ f

Value of f

Query message FREQ?

Response message FREQ f

Detailed header name

Frequency

Sets the frequency.

–2.99975 to 3 GHZ : –2.99975 to 3 GHz

–2999.75 to 3000 MHZ : –2999.75 to 3000 MHz

–2999750 to 3000000 KHZ : –2999750 to 3000000 kHz

–2999750000.00 to 3000000000 HZ

A space is required between
the command message and f.

Input value

Input value explanation

: –2999750000.00 to 3000000000 Hz

Application example FREQ 123 MHZ

7-5

Ｃ

CALCBW

Function

Command message CALCBW f

Query message CALCBW?

Response message CALCBW f

Value of f

Application example CALCBW 3.84MHZ

Calculation Bandwidth

Sets the calculated bandwidth.

The possible setting range is 10 to 80% of the noise bandwidth.

Within the range of 10 to 80% of the noise bandwidth.

CALCALVL

Function

Query message CALCALVL?

Response message CALCALVL l

Calculation Absolute Level

Reads power in the calculated band.

Available for query command only.

2

7-6

C

CALCLVL

Function

Query message CALCLVL?

Response message CALCLVL l

Calculation Bandwidth Level

Reads the bandwidth calculation level.

Available for query command only.

1

7-7

I

IQSRC

Function

Command message IQSRC a

Value of a INT

Query message IQSRC?

Response message IQSRC a

Application example IQSRC EXT

I/Q Source

Selects between internal generation or external input for the I/Q

signal.

:

EXT

OFF

:

:

Internal (Internal I/Q signal)

External (External I/Q signal)

I/Q modulation stops (Only Pules modulation is available.)

7-8

Ｍ

MODE

Function

Command message MODE a

Value of a INT

Query message MODE?

Response message MODE a

Application example MODE EXT

I/Q Source

Selects between internal generation or external input for the I/Q

signal.

: Internal (Internal I/Q signal)

EXT

OFF

: External (External I/Q signal)

: I/Q modulation stops (Only pulse modulation is available.)

7-9

Ｎ

NOISEBW

Function

Command message NOISEBW f

Value of f

Query message NOISEBW?

Response message NOISEBW f

Restriction

Application example NOISEBW 10MHZ

Noise Bandwidth

Sets the noise bandwidth.

1.5 to 16 MHz

When Ext is set for I/Q signal source, screen display and remote con-

trol are disabled.

7-10

Ｓ

SYS

Function

Command message SYS a

Value of a NOISE1

Query message SYS?

Response message SYS a

Application example SYS NOISE1

Noise System

Sets the communication system.

: selects noise

∗∗∗

: other system such as TDMA unit

7-11

Section 7 Remote Controls

7.3 Device Message List for AWGN Internal Adder

Functions When Selecting W-CDMA

This section provides the functional list of GPIB device messages when

using the AWGN internal adder function with W-CDMA selected as ex-

plained in Section 6.

Refer to Section 7.1 for details on command, query and response messages.

Item Device Message

Control Item

AWGN Addition ON NOISEADD ON NOISEADD? NOISEADD ON
AWGN Addition OFF NOISEADD OFF NOISEADD? NOISEADD OFF
C/N PWRCNR l PWRCNR? PWRCNR l
Wanted Signal Power
Noise Signal Power
Noise Bandwidth

Chip Rate x1.5

Noise Bandwidth

Chip Rate x2

Command

Message

−

−

NOISEBW CR1H NOISEBW? NOISEBW CR1H

NOISEBW CR2 NOISEBW? NOISEBW CR2

Query

Message

PWRWS? PWRWS l
PWRNS? PWRNS l

Response

Message

7-12

7.4 Alphabetical Device Message List for the AWGN Internal Adder Function

7.4 Alphabetical Device Message List for AWGN

Internal Adder Functions When Selecting W-CDMA

This section details the alphabetical list of GPIB device messages when

using the AWGN internal adder function with W-CDMA selected as ex-

plained in Section 6.

7-13

Ｎ

NOISEADD

Function

Command message NOISEADD a

Value of a ON

Query

Response

Application

message

message NOISEADD a

example

NOISEBW

AWGN Addition

Sets internal addition of noise and W-CDMA modulation wave

On/Off.

:

Sets the internal adder function On.

OFF

NOISEADD?

NOISEADD ON

Noise Bandwidth

:

Sets the internal adder function Off.

Function

Command message NOISEBW a

Value of a CR1H :

Query message NOISEBW?

Response message NOISEBW a

Application example NOISEBW CR2

Sets the noise bandwidth.

Sets the noise bandwidth to 1.5 times the Chip Rate.

CR2 :

Sets the noise bandwidth to twice the Chip Rate.

7-14

Ｐ

PWRCNR

Function

Command message PWRCNR l

Value of l –30.0 to –8.0 dB

Query message PWRCNR?

Response message PWRCNR l

Application example PWRCNR –8.0 dB

PWRNS

C/N

Sets the ratio of modulation wave power to noise within bandwidth

power (C/N).

Noise Signal Power

Function

Query message PWRNS?

Response message PWRNS l

Value of l –143.0 to 17.0 dB

Application example PWRNS?

Queries the noise power ratio within the bandwidth

.

7-15

P

PWRWS

Function

Query message PWRWS?

Response message PWRWS l

Value of l –143.0 to 17.0 dB

Application example PWRWS?

Wanted Signal Power

Queries the modulation wave power ratio.

7-16

7.5 Device Message List for AWGN Internal Adder Functions When Selecting 1xEVDO

7.5 Device Message List for AWGN Internal Adder

Functions When Selecting 1xEVDO

This section provides the function list of the GPIB device message when

using AWGN internal function with 1xEVDO selected as explained in Sec-

tion 6.

Refer to Section 7.1 for details on command, query and response messages.

Item Device message

Control item Command

message

AWGN Addition On NOISE ON NOISE? NOISE ON
AWGN Addition Off NOISE OFF NOISE? NOISE OFF
C/N NOISECN l NOISECN? NOISECN l
Wanted Signal Power
Noise Signal Power
Noise Bandwidth x4 NOISEBW

CBWX4

Noise Bandwidth x3 NOISEBW

CBWX3

Noise Bandwidth x2

Noise Bandwidth

Tone

NOISEBW
CBWX2

NOISEBW TONE NOISEBW? NOISEBW TONE

－

－

Query

message

WNTSGPWR? WNTSGPWR l
NOISEPWR? NOISEPWR l
NOISEBW? NOISEBW

NOISEBW? NOISEBW

NOISEBW?

Response

message

CBWX4

CBWX3
NOISEBW

CBWX2

7-17

Section 7 Remote Controls

7.6 Alphabetical Device Message List for AWGN

Internal Adder Function When Selecting 1xEVDO

This section details the alphabetical device message for GPIB device mes-

sage when using AWGN internal adder function with 1xEVDO selected as

explained in Section 6.

Refer to an example in Section 7.2 regarding this format.

7-18

N

NOISE

Function

Command message NOISE a

Value of a ON :

Query message NOISE?

Response message NOISE a

Application example NOISE ON

NOISEBW

AWGN Addition

Sets AWGN and 1xEVDO modulation wave internal adder On/Off.

Sets the internal adder function On.

OFF :

Noise Bandwidth

Sets the internal adder function Off.

Function

Command message NOISEBW a

Value of a X4

Value of a X2

Query message NOISEBW?

Response message NOISEBW a

Application example NOISEBW X4

Sets AWGN bandwidth.

: Sets the noise bandwidth to 4 times the chip Rate.

X3

TONE

: Sets the noise bandwidth to 3 times the chip Rate.

: Sets the noise bandwidth to 2 times the chip Rate.

: Sets tone signal of power equivalent to noise.

7-19

N

NOISECN

Function

Command message NOISECN l

Value of 1 –30.0 to +30.0 dB

Query message NOISECN?

Response message NOISECN l

Application example NOISECN –8.0DB

NOISEPWR

C/N

Sets the ratio between modulation wave power and noise power

within band (C/N).

Noise Signal Power

Function

Query message NOISEPWR?

Response message NOISEPWR l

Value of 1 –143.0 to +17.0 dB

Application example NOISEPWR?

Queries noise power within band.

7-20

W

WNTSGPWR

Function

Query message WNTSGPWR?

Response message WNTSGPWR l

Value of 1 –143.0 to +17.0 dB

Application example WNTSGPWR?

Wanted Signal Power

Queries the modulation power

7-21

Section 7 Remote Controls

7-22.

Section 8 Performance Test

This section explains the required measuring instruments and procedures

for setup, calibration and performance test to confirm that the

MU368060A satisfies the standards.

8.1 Performance Test....................................................... 8-2

8.2 Devices used in Performance Test ............................ 8-3

8.3 RF Output Level Accuracy ......................................... 8-4

8.4 In-band Power Calculation Accuracy ......................... 8-5

8-1

Section 8 Performance Test

8.1 Performance Test

The performance test is required to check that the MU368060A satisfies

the standards.

Conduct the performance test when required such as on acceptance in-

spection, periodic inspection or after repair.

If the performance test result shows that the MU368060A does not satisfy

the standards, please contact Anritsu's service division.

The performance test for the MU368060A consists of the following test

items:

RF output level accuracy

•

In-band power calculation accuracy

•

Conduct the performance test periodically for important items as preven-

tive maintenance. It is recommended to conduct the test once or twice a

year.

Save the result of the performance test using Appendix C "Performance

Test Result Sheet."

Caution

Before conducting the performance test, turn MU368060A

and devices used ON for at least 30 minutes to fully

stabilize them. Conduct the test at room temperature, with

stable AC power source voltage and without noise,

vibration, dust and humidity for the best measurement

accuracy.

8-2

8.2 Devices used in Performance Test

8.2 Devices used in Performance Test

The devices used in the performance test of the MU368060A are shown in

the table below:

Performance

Test Item

accuracy

In-band power
calculation
accuracy

Recommended Device

Name

Power meter ML4803ARF output level
Power sensor MA4601A
Spectrum analyzer

(with RMS detection mode)

Anritsu Model Name

MS2683A + Opt04

8-3

Section 8 Performance Test

8.3 RF Output Level Accuracy

(1) Test criteria

ALC On, output: –3 dBm, level difference from results during CW and

during modulation at noise bandwidth of 7.68 MHz: ±3 dB (excluding

when noise internal adder function is On.)

(2) Measuring instruments for test

Power meter .........ML4803A

•

Power sensor ........MA4601A

•

(3) Setup

MG3681A+

MU368060A

Anritsu

Mｷ 3681A

RF Output

ML4803A

Power Sensor

ML4803A

Power Meter

Anritsu POWER METER ML4803A

Sensor Input

(4) Test procedures

[1] Set the communication system for the MU368060A to "NOISE1".

[2] Press the [Preset] button and then set the following parameters:

Baseband : On

Noise : 7.68 MHz

[3] Set the RF Output on the MU368060A to Off.

[4] Perform zero point adjustment and sensor sensitivity calibration

of the power meter.

[5] Set the output level of the MU368060A to –3 dBm.

8-4

[6] Set the frequency to be measured on the MU368060A.

[7] Set the sensor calibration factor for the power meter.

[8] Set the RF Output on the MU368060A to On and then measure

the output level.

[9] Set the following prameters.

Digital Modulation : On

[10] Repeat procedures from [3] to [8].

[11] Find the level difference from the results [7] during CW and [9]

during modulation.

8.4 In-band Power Calculation Accuracy

8.4 In-band Power Calculation Accuracy

(1) Test criteria

Power ratio accuracy within the calculated bandwidth to total power

(when RF output level is –3 dBm)

0.6 dB (1920 to 2170 MHz, noise band width set value: 4 to 8 MHz)

±

2.0 dB (1920 to 2170 MHz, noise band width set value: 8 to 16 MHz)

±

(excluding when the noise internal adder function is On.)

(2) Measuring instruments for test

Spectrum analyzer (with RMS detection mode)......MS2683A +

•

Opt04

(3) Setup

MG3681A+

MU368060A

MS2683A + Opt04

Spectrum Analyzer

Anritsu

Mｷ 3681A

Anritsu

MS2683A

RF InputRF Output

(4) Test procedures

[1] Set the communication system for the MU368060A to "NOISE1".

[2] Press the [Preset] button and then set the following parameters:

Digital Modulation: On

[3] Set Noise Bandwidth and Calculate Bandwidth to be measured

on the MU368060A.

[4] Set the output level of the MU368060A to –3 dBm.

[5] Set the frequency to be measured on the MU368060A.

[6] Set the following parameters on the MS2683A. (For MS2683A

operations, refer to its operation manual.)

SPAN : 1.25 times or more of Noise Bandwidth

RBW : 1/150 times or less of Noise Bandwidth

VBW : Auto

Detector Mode : Rms

Storage Mode : Linear Average

Average Count : 50

Sweep Time : Auto

8-5

Section 8 Performance Test

Reference Level : 10 dBm

Amplitude Scale : 10 dBm

[7] Perform waveform averaging with the spectrum analyzer.

[8] Measure the power for calculated bandwidth by using the noise

measurement function of the spectrum analyzer.

[9] Measure the power for all bands by using the noise measurement

function of the spectrum analyzer.

[10] Calculate the calculated level from the values measured in Step

[3] and [4].

Calculated Level = all bands [dBm] - calculated bandwidth [dBm]

[11] Calculate the difference between the calculated level obtained

using the formula above and that displayed on the MG3681A

screen.

8-6.

Appendix

Appendix A Specifications .................................................A-1

Appendix B Initial Value List ..............................................B-1

Appendix C Performance Test Result Sheet .....................C-1

App-1

Appendix

App-2.

Appendix A Specifications

±

Item Specifications

Application

Carrier frequency range 1920 to 2170 MHz
Noise data

signal

Number of used slots 1 slot
Mass

Probability
distribution

Bandwidth

Crest factor

Calculated
bandwidth

In-band Power
calculation
accuracy

C/N setting
range

Output level
setting range

Level accuracy Within ±3.0 dB for the level at CW when ALC: On,

Noise (AWGN) signal source for reception sensitivity
test of CDMA modulation radio equipment.

Gauss distribution

1.5 to 16 MHz (excluding when the AWGN
internal adder function is On.)

14 dB (RF signal, output level:

≥

the continuous mode)
10 to 80% of the setting value for noise bandwidth

(excluding when the AWGN internal adder
function is On.)

Power ratio accuracy within the calculated
bandwidth to total power at 18 to 35°C

0.6 dB (noise band width set value: 1.5 to 4 MHz,

typical)

0.6 dB (noise band width set value: 4 to 8 MHz)

±

2.0 dB (noise band width set value: 8 to 16 MHz)

±

(excluding when the AWGN internal adder function
is On.)

When the AWGN internal adder function is On:
For W-CDMA selected

–

30.0 to –20.0 dB (resolution: 0.2 dB)

–

19.9 to –8.0 dB (resolution: 0.1 dB)

For 1xEVDO selected

–

30.0 to

–

143 to –3 dBmRF output

output:

when the AWGN internal adder function is On)

400 g

≤

30

.0 dB (resolution: 0.1 dB)

+

–3 dBm, noise bandwidth: 7.68 MHz, (excluding

–

3 dBm, excluding

≤

A-1

Appendix A Specifications

A-2.

B Initial Value List

When Noise is selected for System

Setting Initial value

Noise 7.68 MHz
Calculated 3.84 MHz

When the AWGN internal adder function is On with W-CDMA selected

Setting Initial value

AWGN Off
C/N –20.0 dB
Noise Bandwidth Chip Rate x2

When the AWGN internal adder function is On with 1xEVD selected

Setting Initial value

AWGN Off
C/N –30.0 dB
Noise Bandwidth CalcBWx4

Appendix B Initial Value List

B-1

Appendix B Initial Value List

B-2.

Appendix C Performance Test Result Sheet

C Performance Test Result Sheet

Test site : Report No.

Date

Person in charge

Model MG3681A Digital Modulation Signal Generator

+ MU368060A AWGN Unit

Serial No. Ambient temperature

Power source frequency Hz Relative humidity %

Remarks:

Output level accuracy (Section 8.3)

Output level : –3 dBm

Measurement uncertainty : ±0.2 dB

Frequency Result Maximum Specification Value

1920 MHz

1970 MHz

2020 MHz

2070 MHz

2120 MHz

2170 MHz

Level accuracy at CW: ±3.0 dB

°C

In-band power calculation accuracy (Section 8.4)

Output level : –3 dBm

Noise bandwidth MHz

Calculated bandwidth : MHz

Measurement uncertainty : ±0.1 dB

Frequency Result Maximum Specification Value

1920 MHz

1970 MHz

2020 MHz

2070 MHz

2120 MHz

2170 MHz

±0.6 dB when noise band-

width is ≤8 MHz

±2.0 dB when noise band-

width is ≤16 MHz

C-1

Appendix C Performance Test Result Sheet

C-2.

[Alphabetical Order]

C

Calculated Bandwidth .........................................3-2, 3-3, 3-4, 3-5, 3-6, 5-2,

Calculated Level ...................................................3-3, 3-4, 3-5, 3-6, 5-2, 5-3,

C/N.........................................................................6-4

N

Noise Bandwidth ..................................................3-2, 3-3, 3-4, 3-5, 3-6, 5-2

P

Power within the calculated bandwidth .............3-4, 3-5, 3-6

R

Reception sensitivity ............................................4-2

Index

5-3, 5-4

5-4, 5-5

5-3, 5-4

W

Wanted signal .......................................................4-2, 5-3

Index-1

Index

Index-2.