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Title: Alignment Procedure
Model: T6500
A. PCB LEVEL (Test Condition: under CH15)
NO ITEM
ALIGNMENT
METHOD
REMARK
9. Audio frequency response.
a) Set SG RF level to –50dBm with 1.5kHz deviation at
1KHz audio frequency.
b) Rotate the volume switch to the position, which give
an output 100mV
±
5mV at TP117.
c) Vary the audio frequency from 300Hz to 3KHz.
d) Check the RX response compare to 1KHz tone.
i)
500Hz : +5.0 dB to +14.0 dB.
ii)
2.5KHz : -12.0 dB to –20.0 dB
10. Maximum and Minimum Audio Output Power.
a) Set SG RF level to –50dBm with 1.5kHz deviation at
1KHz audio frequency.
b) Rotate the volume switch to the position, which give a
maximum output .
c) Check the voltage at TP117 >/=1500mV.
d) Set maximum audio output to 0dB, rotate the volume
switch to the position, which give a minimum output.
e) Check the minimum voltage -23dB to -40dB at TP117
11. Set WX mode, Set SG RF level to –116dBm with
3KHz deviation at 1KHz audio frequency.
a). Check SINAD sensitivity <= -116dBm.
@12dB SINAD at TP117.
14.
Noise- Detector
1. Set SG to –120dBm with 1.5KHz deviation., 1KHz AF
on CH7.
2. Press ”Mon” key and Adjust VR502 for transient state @
10dB SINAD.
3. Check high state @8 to 13dB SINAD.