Giant SX700 Manual

GIANT ELECTRONICS LTD.
Title: Alignment Procedure
Model: SX700 Date: Feb 26, 2005
A. PCB LEVEL (Test Condition: under CH15, Supply=5.2Vdc)
NO ITEM ALIGNMENT METHOD REMARK
1. LCD display
(Should enter test
mode)
1. Press and hold the ‘+’ key and ‘Menu’ key together.
2. Turn on the radio power until a good key chirp is heard,
and the backlight is on for about 500 ms . finally, the
LCD should be display ‘1CH’.
3. Press ‘-’ key , then all LCD segments should be
anticlockwise displayed.
4. Finally, all the LCD segments should be shown for
about 500ms as follows: 21888. .
2. Standby current 1. Set A-METER, and RX mode.
2. Check the standby current <80mA DC.
3. Talk on current
(Power supply 5.2V
DC)
1. Set A-METER, and TX mode @50ohm load.
2. Set channel to 15, Check the talk on current <1500mA.
3. Set channel to 14, Check the talk on current <800mA.
4. VCO 1. Set RX or TX mode
2. Check TP503 to provide 0.7~2.3VDC .
3. Adjust L509 to provide 2.2 ± 0.1VDC at TP503 if VCO
level are more than 2.4VDC on CH14.
4. Set WX mode, check TP504 to provide 0.7~2.4VDC
5. TX Power
(Power supply 5.2V
DC)
1. Set TX mode CH15, Check the transmit Hi-power to
provide 0.63W ERP.
2. Set CH15 Low power mode, Adjust VR801 to transmit
Low-power to provide 400±30mW
3. Set TX mode CH14, Check the transmit power to
provide 550±200mW .
***
6. TX Frequency 1. Set TX mode
2. Adjust VC501 to provide 462.5500MHz ±50Hz.
7. CTCSS Tone
Frequency
1. Set CH15/CODE1 and Tx mode.
2. Check CTCSS tone frequency to be within 66.8Hz to
67.2Hz.
8. CDCSS Frequency 1. Set TX mode
2. Set CH15/CODE99
3. Adjust VR501 to provide 503 Octal Code
4. Set CH15/CODE39, check Octal Code to be 023
FILTER SET:
1.Input Level:
0.9KHz
9. CTCSS Tone Dev. 1. Set CH15/CODE1 AF input level to off, check DEV to
be 300Hz~ 650Hz.
2. Set CH14/CODE38 AF input level to off, check DEV
to be 300Hz~ 650Hz.
FILTER SET:
1.50HZ~300HZ
2.750µs De-emp
ON
3. PK+
4. FM DEV. AVG
ON
10. TX Modulation
& distortion
1.Set AF level at 50mv;1KHz,Adjust VR101 to provide
Max TX deviation 2.25KHz to 2.35KHz.
2.Check input Mic level in 3~15 mV to provide normal
deviation 1.5KHz.
3.Check the demodulation distortion <= 5%.
5. Audio Frequency Response.
a) Input a 2.0mV 1KHz audio frequency to TP116
and press ‘PTT’ switch.
b) Check the response compare to 1KHz tone.
i) 500Hz : -5.0 dB to –10.0 dB.
ii) 2.5KHz : +3.0 dB to +9.0 dB .
FILTER SET:
1.HPF 300Hz
2.LPF 3KHz
3. PK +
Page: 1 / 5
2. Set TX mode CH14, Check the transmit power to
provide 0.17W ERP.

GIANT ELECTRONICS LTD.
Title: Alignment Procedure
Model: SX700 Date: Feb 26, 2005
A. PCB LEVEL (Test Condition: under CH15)
NO ITEM ALIGNMENT METHOD REMARK
11. VOX Detector 1. Set VOX level at 1.
2. Set AF level at 11 +/- 0.5 mV,1KHz at TP116.
3. Unit start to transmit.
4. Set AF level at 8.5 +/- 0.5mV,1KHz at TP116.
5. Unit stop transmit.
6. Set VOX level at 2.
7. Set AF level at 8.0 +/- 0.5mV,1KHz at TP116.
8. Unit start to transmit.
9. Set AF level at 6 .0+/- 0.5mV,1KHz at TP116.
10. Unit stop transmit.
11. Set VOX level at 3
12. Set AF level at 4.5 +/- 0.5mV,1KHz at TP116.
13. Unit start to transmit.
14. Set AF level at 3.5 +/- 0.5mV,1KHz at TP116.
15. Unit stop transmit.
12. IVOX Detector As same as item 11
13. Rx Audio test 1. Set RX mode CH7.
2. Set SG RF level to –50dBm with 1.5KHz deviation
1KHz modulation Signal.
3. Adjust L517 to provide minimum distortion & max
output level at TP117.
4. Rotate the volume switch to the position, which give a
Max audio output at TP117.
5. Check Max audio output level >1600mV.
6. Check Rx current <150mA.
7. Check the 1KHz distortion <= 5%.
8. Set SG RF level to –118dBm with 1.5kHz deviation at
1KHz audio frequency.
a). Check SINAD sensitivity <= -118dBm.
@12dB SINAD at TP117.
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 : +3.0 dB to +9.0 dB.
ii) 2.5KHz : -15.0 dB to –25.0 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 ≥1600mV.
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 –118dBm with
1.5KHz deviation at 1KHz audio frequency.
a). Check SINAD sensitivity ≤-118dBm.
@12dB SINAD at TP117.
Page: 2 / 5

GIANT ELECTRONICS LTD.
Title: Alignment Procedure
Model: SX700 Date: Feb 26, 2005
A. PCB LEVEL (Test Condition: under CH15)
NO ITEM ALIGNMENT METHOD REMARK
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 15dB SINAD.
15. CTCSS Tone Detect 1. Set CH15/CODE1 and SG to –60dBm with 67Hz tone
frequency, 400Hz deviation.
2. Check the Pin22 of IC101 to have square-wave, and low
for RF modulation off.
3. Repeat item 1 and 2 for code38 (250.3Hz).
4. Repeat item 1 ~ 3 for CH14.
16. CDCSS Tone Detect 1. Set CH15/CODE99 and SG to –60dBm with 503 Octal
Code tone frequency, 400Hz deviation.
2. Check the Pin22 of IC101 to have square-wave, and low
for RF modulation off.
3. Repeat item 1 and 2 for code39 (023 Octal Code).
4. Repeat item 1 ~ 3 for CH14.
17. Quiet Noise Detect 1. Set unit to quiet noise mode
2. Set CH15/CODE1and SG to –60dBm with 67Hz tone
frequency, 400Hz deviation and 55 Hz audio frequency,
1K deviation..
3. 55 Hz tone frequency appear on TP117.
18. Normal Batter level
Detect
1. If the battery voltage level less than 4.3V, the battery
icon display as .
2. If the battery voltage level more than 5.2V, the battery
icon display as .
19 Weather Alert Detect 1. Set unit to Weather Alert mode
2. Set SG RF level to –60dBm with 3KHz deviation at
1050Hz audio frequency.
3. Check auto open WX mode of two way mode.
20. SCAN 4. Set SG RF level to –50dBm with 500Hz deviation,
100Hz modulation.
5. Press "Mon" key.
6. Unit shows channels 9 and code 13.
Page: 3 / 5

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.
Page: 4 / 5

GIANT ELECTRONICS LTD.
Title: Alignment Procedure
Model: SX700 Date: Feb 26, 2005
5. Audio TX Path CH15 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 3~15mV 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 –10.0 dB.
2.5KHz : +3.0 dB to +9.0 dB
5.Repeat CH14.
Filter set :
1.HPF 300Hz
2.LPF 3KHz
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 CH14.
C. CHARGER CASING
NO ITEM ALIGNMENT METHOD REMARK
1 Charge current 1. Connect the Charger base and the Plug-in adaptor by
inserting the pin into the rear of Charger base, the charge
current should be more 70 mA and the LED on the
adaptor should glow continuously.
* Remark:
TX mode :
1. Press and hold PTT button
RX mode :
1. Release PTT button
Power supply: Min. DC 4.35V
Normal DC 5.2V
Max DC 5.8V
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