GIANT ELECTRONICS LTD.
Title: Alignment Procedure
Model: SX700
Date: Feb 26, 2005
B. CASING LEVEL
NO ITEM
ALIGNMENT
METHOD
REMARK
1. Current
Consumption 1. Set A-METER. With volume switch OFF, check the
OFF current <200 A.
2. With volume switch ON, check the standby current
<80mA.
Press 'PTT' switches and check the TX current
<1500mA.
2.
TX Frequency
1. Check CH15=462.5500MHz
+
/-500Hz;
2. Check CH14 =467.7125MHz
+
/-500Hz.
3.
Noise- Detector
1. Set the distance between antennas of SG and checked
unit to 0.3M ~ 0.5M.
2. The antennas of SG and checked unit should be parallel
to make the electromagnetic field of SG.
3. Radiate equably to the antenna of checked unit.
4. Set SG to -90dBm with 1.5KHz deviation, 1KHz tone on
CH7.
5. Adjust VR502 for HIGH state : 8 ~ 15dB SINAD .
When adjusting
Noise-Det. ,
Should reduce any
interference from
other
Instruments and
body
.
4.
Audio RX Path CH7
1. Set SG RF level to -50dBm with 1.5kHz Dev.; 1kHz AF,
Rotate the volume switch to the position, which give an
Max output.
2. Check speaker O/P level >85dBspL(30cm distance).
3. Set SG RF level to -60dBm with 1.5kHz Dev.; 1kHz AF.
4. Plug the dummy speaker and dummy microphone into
audio jet.
5. Rotate the volume switch to the position, which give an
output 900+/-50mv.
6. Set SG RF level to -90dBm with 1.5kHz Dev.; 1kHz AF.
7. Check the radiated sensitivity correlate to the golden
sample.
8. Audio frequency response.
a) Set SG RF level to –60dBm with 1.5kHz deviation at
1KHz audio frequency.
b) Rotate the volume switch to the position, which give
an output 100mV
±
5mV (voltage difference of
dummy speaker).
c) Vary the audio frequency from 300Hz to 3KHz.
d) Check the RX response compare to 1KHz tone.
i) 500Hz: + 3.0 dB to +9.0 dB.
ii) 2.5KHz: -15.0 dB to –25.0dB.
9. Maximum and Minimum Audio Output Power.
a) Set SG RF level to –60dBm with 1.5kHz deviation at
1KHz audio frequency.
b) Rotate the volume switch to the position, which give a
maximum output with distortion <5%.
c) Check the voltage difference of dummy speaker
>/=900mV.
d) Set maximum audio output to 0dB, rotate the volume
switch to the position, which give a minimum output.
e) Check the voltage difference between of dummy
speaker –23dB to -40dB.
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