Motorola Confidential Proprietary
Test Procedures
Service Manual
47
TX ST Deviation Test
Communications Analyzer Setup:
Select
TX
button from the Screen Con
trol 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# Load synthesizer to channel
333
122#
Set power level to power step
2
05#
Turn on transmit carrier
14#
Enable signaling tone
View FM Deviation for reading.
The peak ST deviation measured on
the communications analyzer
should be between
7.2 kHz - 8.6 kHz
.
The demodulated signal on the com-
munications analyzer should have
an audio frequency of
10 kHz
.
TX TEST
dB
TX Frequency
834.9900
MHZ
Tx Power
27.49
dBm
FM Deviation
7.890
KHz
10.0000
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
Figure 30. TX Test Screen
TX ST Deviation Test
Summary of Contents for Timeport P8190
Page 1: ...DIGITAL WIRELESS TELEPHONE Model P8190 TDMA 800MHz Analog 800MHz Service Manual Level III ...
Page 3: ......
Page 28: ... 2000 Motorola Inc TDMA Timeport P8190 Cellular Overview 16 ...
Page 36: ...24 TDMA Timeport P8190 Accessories 2000 Motorola Inc ...
Page 44: ...Motorola Confidential Proprietary TDMA Timeport P8190 TDMA Test Mode NAM Programming 32 ...
Page 66: ...Motorola Confidential Proprietary TDMA Timeport P8190 Test Procedures 54 ...
Page 76: ...64 TDMA Timeport P8190 Disassembly Speaker Vibrator Removal Motorola Confidential Proprietary ...
Page 88: ...76 TDMA Timeport P8190 Parts List Motorola Confidential Proprietary ...
