GIANT ELECTRONICS LTD.
Title: Alignment Procedure
Model: T5025/T5525
Version:
00
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IS TO BE TREATED AS STRICTLY AND IS NOT BE DISCLOSED, REPRODUCED, OR USED EXCEPT AS AUTHORIZED IN
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tuneup.doc
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e) Check the voltage difference between of dummy
speaker –23dB to -40dB.
B. CASING LEVEL
N O
ITEM
ALIGNMENT METHOD
REMARK
5.
Audio TX Path CH8
1. Check the radiated power correlate to golden sample.
2. Plug the dummy speaker and dummy microphone into
audio jet.
3. Standard TX Deviation.
a) Input mic level to dummy microphone and press
‘PTT’ switch.
b) Check max. Dev. 2.0KHz < max. Dev. < 2.5KHz.
c) Check input level in 0.5~10mV to provide normal
deviation 1.5KHz.
4. Audio Frequency Response.
a) Input a 2.0mv@1KHz audio frequency to dummy
microphone and press ‘PTT’ switch.
b) Check the response.
i) 500Hz: -5.0 dB to –11.0 dB.
2.5KHz: +3.0 dB to +9.0 dB
5.Repeat CH1.
Filter set:
1.HPF 50Hz
2.LPF 15K Hz
3. PK +
6.
Function check and
Intercom function
(between sample and
production unit)
1. Turn on the radio power , the back-light should be on
For a while and a good key chirp should be heard at
the same time.
2. The LCD display should be clear , not miss the segment
when pressing ‘+’ and ‘-’ or ‘-’ key , the key tone
should also be heard clearly.
3. Set channel of the sample and production unit CH=11.
4. Press ‘PTT’ switch to intercom between sample and
Production unit , the LED should be light.
5. The sound quality between both should be clear and no
metal sound .
6. Press ‘CALL’ key , the call tone should be heard clearly
each other .
7. Change channel of the production unit to CH=12 , then
Press ‘PTT’ switch of sample.
8. Any noise should not be heard from the speaker of
Production unit.
9. Press any key , the dead problem should not occur .
10.Set CH1/code5,SG to be CH1/code4 and code6,check
the speaker mute.
11.Set CH1/code37,SG to be CH1/code36 and code38,
check the speaker mute.
12. Repeat item 10 and 11 for CH1.
* Remark:
TX mode :
1. Press and hold PTT button
RX mode :
1. Release PTT button
Power supply: Min DC 3.5v;Normal DC4.0v; Max DC4.5v