User's Manual

c. The Confirm of Rx sensitivity
1. Adjust SSG to channel frequency.
2. Adjust modulation frequency, 1KHz to modulation degree, 1.5 KHz.
3. After adjusting the frequency of SSG to channel frequency, RF level
sets to -47dBm.
d. The Conform of Squelch sensitivity
1. Set the standard channel.
. 2. After adjusting SSG to channel frequency, the RF level of SSG is set
on SINAD 8¡ › 6dB.
e) Receiver Test
a. Rx sensitivity test
SSG should be adjusted to 12dB of SINAD's point needle seeing wave of
oscilloscope as SSG sets in 1kHz with 1.5 KHz frequency deviations. At this
time, normal RF level is -118dBm.
b. Audio Distortion Test
1. SSG should be adjusted like way of point a) and RF level sets to -47dBm.
2. Adjust to 0.8Vrms(8¥ load) seeing Audio wave.
3. Read the needle of distortion meter (normal condition would be less
than 5% distortion.)
c. Squelch Test
After RF level of SSG should be set to the least level, RF level should be
gradually increased until speaker makes audio sound. At this point, check RF
level(Check if the SINAD is 8¡ › 6dB)
f) Symptoms, Checkpoint & Correction
SSG EUT
POWER SUPPLY
8§ LOAD
OSCILLOSCOPE
AV VTVM
DISTORTION METER
SINAD METER