Motorola T720 Service Manual page 48

Test Procedures
TX Frequency Error Test
TX Frequency
M Hz
834.9900
d B
T X Power
27.60
In pu t Port
Tu ne Mo de
Auto/M an ua l
RF in/An t
Tun e Freq
IF Filter
83 4.99 000 0 2 30 kH z
TX Pwr Zero E xt TX Key
Zero
O n/O ff
Test Mode Commands:
Using RadioComm software
- Suspend Radio
- Load synthesizer to channel 350
- Set power level to step 2,
- Turn on Carrier
The frequency error measured on the
communications analyzer must be less
than ±1 kHz.
Motorola Confidential Proprietary
TX TEST
FM Dev iation
11.58
A F Freq
1.00000
AF Anl In AFGen 1 Freq To Screen
1 .00 00
FM Demod
KHz
C ALL CN TL
SMS
Filter 1 AFGen1 Lvl
A UTHE N
6.0 0
50 Hz HPF
Filter 2
V
15k Hz LPF
R X TEST
De-Emp hasis
75 0 . s /Off
Config
Detector
TESTS
Pk+ - M ax
Communications Analyzer
KHz
Setup
• Select TX button from the Analog
KHz
Screen Control panel
• PWR ismeasured in d Bm
• Set Frequency Measurement to
auto or manual (display will show
CDM A
TX Freq. Error)
• SetTX frequency to 835.05 MHz
Analog
• SetIF filter to 230 kHz
• SetAF Filter 1 to 50 Hz
• SetAF Filter 2 to 15 kHz
• SetAF gen1 for 1 kHz frequency
at 6V level (output will go to the au-
dio port)
48
CDMA T720
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