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Service Manual
TX Frequency Error Measurements
Figure 39. Digital Measurements Screen
DIGITAL MEASUREMENTS
DTC Meas
EVM 1
Frequency Error
0.0081
TX Power
-2.35879
Amplitude
Traffic Chan
333
-50.0
dBm
Slot
1
Pwr Gain
Auto / Hold
DVCC
20 dB
1
Trig Type
2X Frame
PCS Mode Handset Commands:
1
Enter 575# (Digital signaling mode)
2
11333# (Loads synthesizer Channel)
3
Display prompt " Y" (enter time slot)
4
Display prompt " Y" (enter band, 0 =
800, 1 = 1900)
5
Set power level to step 2 (122#)
6
Turn on transmitt carrier (05#)
The frequency error measured on the com-
munications analyzer must be <200Hz.
You can also use Digital Call processing to
make these measurements.
kHz
EVM
3.9683
dB
Peak EVM
11.6270
Motorola Confidential Proprietary
TX Frequency Error Measurements
TX Frequency Error Measurement Test
1
Make sure the Test Set is in Active
%
mode.
2
Select DIG MEAS from the To
%
Screen.
3
Select the DTC Meas field. This
shows the To Screen with a list of
To Screen
available tests.
CALL CNTL
4
Select EVM 1.
CALL CNFG
5
Traffic Chan should be set to 333.
ANLG MEAS
SPEC ANL
6
Put the mobile into test mode.
DIG MEAS
7
Frequency error is displayed.
More
Test Procedures
51
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