User's Manual

b. Connect DC 6.0V, voltage preset to EUT.
c. Connect "power meter" & "dummy load (50¥ )".
d. Adjust Tx frequency according to trimming trimmer CV401.
e. Connect AF oscillator to mic terminal for conform modulation degree.
f. Adjust the frequency of AF oscillator to 1KHz and adjust AF level should be
100mV.
g. Checking oscilloscope and modulation meter. Max. Frequency deviation should
be in ¡  2.5 KHz.
c) Transmitter Test
a. Output Power Test
Power (6.0V DC) should be Max.2.0W and in +-10% range.
b. Audio Response
Connect AF oscillator to Mic terminal and then firm the audio level
that doesn't distortion the wave of oscilloscope in the frequency range,
300Hz¡ › 3kHz. Check the audio level for 300Hz¡ › 3kHz based on frequency
standard, 1kHz.
c. Modulation Degree Test
1. Connect AF oscillator to the MIC terminal and then adjust the level to 100mV
2. Measure the oscilloscope wave and he point needle of modulation meter
after pressing PTT key.
3. Sweep gradually the frequency of AF oscilloscope from 300Hz to 3kHz.
4. At this time, the point needle of modulation meter should be in ¡  2.5 KHz.
d. Spectrum Test
1. Antenna is 50¥ and attenuator degree should be 20dB more.
2. observe the spectrum with pressing PTT key. The harmonics should be
less 60 dB than carrier.
d) Receiver
a. Preparation
1. Adjust the power supply to DC 6.0V
2. Adjust Voltage level to 0.8Vrms(8¥ load) after power on.
b. Connection method