FCC ID: K66GX1280S
Alignment
Vertex Standard Co,. Ltd.
5
Repeat steps 3 though 6 three times so that deviation is ±3.0 KHz and the
maximum deviation is ±4.4 KHz to ±4.6 KHz.
-- Confirmation --
Set the output of the AG to 1 KHz and 150 mV.
Set the channel to EXP01, confirm that maximum deviation is between ±4.3 KHz
and ±5.0 KHz.
Set the channel to EXP02, confirm that maximum deviation is between ±4.3 KHz
and ±5.0 KHz.
Set the channel to EXP04, confirm that maximum deviation is between ±4.0 KHz
and ±5.0 KHz.
Set the channel to EXP05, confirm that maximum deviation is between ±4.0 KHz
and ±5.0 KHz.
Adjustment of Receiver Front-end
Adjust the receiver front-end coil.
-- Adjustment --
Setup the test equipment as shown below.
Set the center frequency of t he spectrum analyzer to 159.00 MHz, set SPAN to
20.00 MHz, set RBW and VBW to 30 KHz, and set SWP to 56 ms.
Adjust
T1001
,
T1002
,
T1003
,
T1004
, and
T1005
until the wave form shown in
below is obtained.
Note: Adjust the output of the tracking generator so that RF AMP and spectrum
analyzer will not saturate.
Figure shows the reference wave form. The wave form varies with measuring
instruments. It is impotent to take the lowest possible value at the stop band near 150
MHz and the highest possible value at the band near 156 MHz.
Each coil shall be adjusted at the range between the initial condition and right and left
revolving.
GX1255S-FRONT-END
ATTEN 20dB
RL 10.0dBm
10dB/
CENTER 159.00 MHz
*RBW 30 kHz VBW 30 kHz
SPAN 20.00 MHz
SWP 56.0 ms
