Motorola V200 Service Manual page 52

Troubleshooting
48
TX Audio Muting
Table 15. TX Audio Muting Test Values
Test Limits
Upper limit
Lower limit
• Select the SUSPEND button to put the phone into Suspend Mode.
• Under CP_MODE, select the AMPS button to place the transceiver into Analog
call processing mode.
• Under the LOAD_SYN heading, enter desired channel and select the Set Chan
button to tune the UUT to the TEST_CHANNEL.
• Under AUD_PATH heading, set Input to 3 and Output to1, RX MUTE and
select SET.
• Set AUD_LVL to level 3.
• Under AUD_CTRL, select Sidetone OFF.
• Under COMPD, select Compander ON.
• Under SET_RF_PWR, set transceiver to power step 2.
• Under CARRIER, select ON to enable the analog carrier.
• See Figure 19.
• Set up the test set as follows: set the analyzer to 750 µSec de-emphasis, 15 kHz
LP filtering.
• Detector: Peak (+/-) /2
• Input a 1004 Hz TX modulation signal to the audio in pin of the accessory con-
nector at a level to get 8 kHz peak deviation. Set the audio analyzer for C-mes-
sage filtering and RMS detector.
• Measure the demodulated output from the modulation analyzer. Reference the
audio analyzer to the 1004 Hz tone.
• Use AUD_PATH to select path "1103h".
• Measure the change in dB level on the audio analyzer with respect to the refer-
ence. Measured change must meet the specification defined in Table 15.
October 04, 2001
CDMA V200
Level (dB)
-40.0
-90.0
6881039B10