Transmit Amplifier Adjustment; Operation - Icom IC-92AD Service Manual

5-2 TRANSMIT AMPLIFIER ADJUSTMENT

Select an adjustment item using [2] / [8] keys, then set the adjustment value as specifi ed using [DIAL].
ADJUSTMENT
IDLING CURRENT 0 • Supply voltage : 5.0 V
(@5.0 V)
[PREPARATION]
[VHF BAND] 1 • Displayed freq. : "(1)"
[UHF BAND] 2 • Displayed freq. : "(4)"
TRANSMIT 1 • Displayed freq. : "
POWER (@5.0 V)
[VHF (BAND LOW)]
[VHF (BAND HIGH)] 2 • Displayed freq. : "(2)"
[UHF (BAND LOW)] 3 • Displayed freq. : "(3)"
[UHF (BAND HIGH)] 4 • Displayed freq. : "(5)"
[USA]
[SEA], [CHN], [EXP], [CAN]
RF POWER METER
(10 W/50 Ω)
ADJUSTMENT CONDITION
• Transmitting
• Transmitting
• TX power : " "
• Transmitting
• TX power : " "
• Transmitting
• TX power : " "
• Transmitting
• TX power : " "
• Transmitting
(1) (2) (3)
JIG cable
(See the page 5-1)
To the battery contact pins

OPERATION

1) Connect an RF power meter
to the antenna connector.
2) C o n n e c t a m u l t i m e t e r
between the external power
supply and transceiver.
• A d j u s t t h e c u r r e n t u s i n g
[DIAL], then release the PTT
and push [BAND] to store the
adjustment value.
" • Adjust the TX power using
[DIAL], then release the PTT
and push [BAND] to store the
adjustment value.
(4) (5)
Be sure the polarity.
MULTIMETER
(10 mA to 3 A)
–
+
Fusese
(3A)
5 - 3
ADJUSTMENT
ITEM
–
[ ]
[ ]
(6) (7)
5.0 V
DC power supply
+
−
VALUE
–
200–300
mA
50–150 mW
−
⊕