Icom FX-2463 Adjustment page 3

Adjustment
Preparation for
Checking Modula-
tion Adjustment
Deviation
Adjustment
Modulation Balance
Adjustment
No. Adjustment Condition & Tuning
When there is no particular set limits, set
the modulation analyzer for adjustment and
checking as below.
HPF
LPF
De-Emphasis
Detector
Connect the modulation analyzer set at the
above conditions, through the attenuator to
the antenna terminal. Connect an oscillo-
scope, distortion meter and a level meter to
the modulation analyzer's detection output
terminal.
Connect a millivolt meter or a 600 ohm out-
put impedance CR oscillator to the trans-
ceiver's mic terminal.
Set the CR oscillator to a 1 kHz sine wave,
150mVrms, and input from the external mic
terminal. Set the transceiver to TX and use the
adjustment software to adjust to the following values.
Adjust. Freq.
WIDE
NARROW
Use the adjustment software to adjust the
modulation analyzer's detection output horizontal
line so that it becomes a straight line as below
Adjust. Freq.
ADJUSTMENT
OFF
20 kHz
OFF
(P ± P)/2
Near Center Frequency
± 4.10 ± 0.05 kHz
± 2.10 ± 0.05 kHz
Near Center Frequency
Value Ref. No. CK. Point
± 4.05 ~ Adj. Soft ANT Con
±4.15kHz
± 2.05 ~
±2.15kHz
Detection Adj. Soft ANT Con
Output