Motorola M3097 Service Manual download pdf (Page 51)

Motorola Confidential Proprietary

TDMA M3090/M3097Test Procedures

40

TX Power Out Test

TX TEST

dB

TX Frequency

834.9900

MHZ

Tx Power

27.49

dBm

FM Deviation

11.58

KHz

1.00000

KHz

AF Freq

Tune Mode

Auto / Manual

Tune Freq

834.990000

MHz

Tx Pwr Zero

Zero

Input Port

RF In / Ant

If Filter

230 KHz

Ext TX Key

On / Off

AF Anl In

FM Demod

Filter 1

50 Hz HPF

Filter 2

15 KHz LPF

De-Emphasis

750 us / Off

Detector

Pk +- Max

AF Gen 1 Freq

1.0000

KHz

AF Gen 1 Lvl

6.00

V

To Screen

RF GEN

RF ANL

AF ANL

SCOPE

SPEC ANL

ENCODER

DECODER

RADIO INT

More

Communications Analyzer Setup:

• Select TX button from the Screen

Control panel

• PWR is measured in dBm

• Set Frequency Measurement to auto

or manual (display will show TX Freq.

Error)

• Set TX frequency to 834.990 MHz

• Set IF filter to 230 kHz

• Set AF Filter 1 to 50 Hz

• Set AF Filter 2 to 15 kHz

• Set AF gen1 for 1 kHz frequency at

6V level (output will go to the audio

port)

Test Mode Commands:

11333# Loads synthesizer to chan

nel 333

12X# Set power level to step X,

where X is a power level

from 1 to 7.

05# Turns on transmit carrier

The TX Power Out specification for each

portable power level is as follows:

Power Step 2 25dBm - 26dBm

Power Step 3 20.5dBm - 23.5dBm

Power Step 4 17.0dBm - 20.0dBm

Power Step 5 13.0dBm - 16.5dBm

Power Step 6 9.0dBm - 12.5dBm

Power Step 7 5.5dBm - 9.0dBm

Refer to the TX troubleshooting section

for radios not within the pass specifica-

tions.

Note: When taking measurements, re-

member to compensate for cable loss.

Figure 23. TX Test Screen

TX Power Out Test

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