Kenwood NX-3720, Service Manual

Page: 44 / 210

1-44 (No.RA054<Rev.001>)
4.8 Transmitter Section
4.
Frequency *The
Frequency
adjustment
can be
performed
only in PC
test mode.
1) Adj item:
[Frequency]
SSG output:
-20dBm (22.4mV)
(CW (without
modulation))
Caution:
Perform the
frequency
adjustment under
the following
conditions.
• Temperature
range of +20
°
C to
+33 ° C (+68.0 ° F to
+91.4
°
F).
(The temperature
is displayed on the
Frequency
adjustment screen
of the KPG-D3/
D3N and the LCD
of the transceiver.)
• Use an accuracy
of 0.003ppm for
the SSG. (Use a
standard oscillator
if necessary.)
SSG Panel ANT [Panel
tuning
mode]
[

],
[

]
[PC
test
mode]
[+], [-]
[PC test mode]
Press [Start] button of
“Auto Tuning”. Press
[Apply] button to store
the adjustment value
after the automatic
adjustment has
finished.
[PC test mode]
“IF20” value =
Within 0±10
digits. The value
of “IF20” will
become around
“0” after the
adjustment has
finished.
Remark:
“Frequency” is
adjusted under
receiving
condition with
SSG.
5.
RTC
Correciton 1) Adj item:
[RTC]
Adjust:[****]
Press [ ]
button to
store the
adjustment
value.
1) Adj item:
[RTC Correction]
Data: [****]
Press [Apply]
button to store the
adjustment value.
Frequency
Counter TX-
RX TEST
POINT
(CN55) Remark:
The adjustment
value should
input the display
of a Frequency
Counter.
Item Condition Measurement Adjustment Specifications
/Remarks
Panel tuning
mode
PC test mode Test-
equipment
Unit Terminal Unit Parts Method
Item Condition Measurement Adjustment Specifications
/Remarks
Panel tuning
mode
PC test mode Test-
equipment
Unit Terminal Unit Parts Method
1.
Maximum
Transmit
Power 1) Adj item:
[MAX_P]
Adjust:[****]
2) Adj item:
[L1]
→
[L3]
→
[C2]
→
[H1]
→
[H3]
PTT : ON
Press [ ]
button to store
the adjustment
value.
1) Adj item:
[Maximum
Transmit Power]
2) Adj item:
[Low1]
→
[Low3]
→
[Center2]
→
[High1]
→
[High3]
Press [Transmit]
button.
Press [Apply]
button to store the
adjustment value.
Power
meter
Ammeter Panel ANT Panel [Panel
tuning
mode]
[

],
[

]
[PC
test
mode]
[+], [-]
57.5W ±2.5W
15A or less