4-2 PLL ADJUSTMENTS
4 - 2
REFERENCE
FREQUENCY
REFERENCE
LOOP LOCK
VOLTAGE
MAIN LOOP
LOCK
VOLTAGE
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1
2
1
1
2
3
• Display frequency: Any
• L623 (PLL unit)
: Center
• Receiving
• Display frequency: 0.0300 MHz
• Mode
: USB
• Receiving
• Display frequency: 128.99999 MHz
• Mode
: USB
• Receiving
• Display frequency: 199.99999 MHz
• Mode
: USB
• Receiving
• Display frequency: 470.00000 MHz
• Mode
: USB
• Receiving
PLL
PLL
PLL
Connect an RF volt-
meter to check point
P681.
Connect a frequency
counter to check
point P681.
Connect a digital
multimeter or oscillo-
scope to check point
CP131.
Connect a digital
multimeter or oscillo-
scope to check point
CP401.
Maximum level
(0 dB or more)
60.000000 MHz
2.0 V
4.0 V
4.0 V
4.0 V
PLL
PLL
PLL
L681,
L682
L601
L623
R602
C4
C306
C335
C367
4-3 TRANSMITTER ADJUSTMENTS
TRANSMIT
TOTAL GAIN
OUTPUT
POWER
CARRIER
SUPPRESSION
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
1
2
1
2
3
4
1
• Display frequency: 14.10000 MHz
• Mode
: USB
• [Q1 RF POWER] : H
• Connect an audio generator to
[MIC] connector and set as:
1.5 kHz/3 mV
• Transmitting
• Transmitting
• Display frequency: 14.10000 MHz
• Mode
: USB
• [Q2 MIC GAIN]
: 5
• Connect an audio generator to
[MIC] connector and set as:
1.5 kHz/30 mV
• Transmitting
• Display frequency: 52.00000 MHz
• Transmitting
• Display frequency: 145.00000 MHz
• Transmitting
• Display frequency: 435.00000 MHz
• Transmitting
• Display frequency: 14.10000 MHz
• Mode
: USB and LSB
• Apply no signal to [MIC] connector.
• Transmitting
Rear
Panel
Rear
Panel
Rear
Panel
Connect an RF
power meter to
[ANT1] connector.
Connect an RF
power meter to
[ANT1] connector.
Connect an RF
power meter to
[ANT2] connector.
Connect a spectrum
analyzer to [ANT1]
connector via an
attenuator.
Maximum RF power
50 W
100 W
100 W
50 W
20 W
Minimum carrier level
MAIN
MAIN
MAIN
L511,
L512,
L562,
L563,
L566
R579
R1082
R1084
R1086
R1088
R1045
Содержание IC-706MKIIG
Страница 1: ...SERVICE MANUAL HF VHF UHF ALL MODE TRANSCEIVER i706MK G ...
Страница 58: ... HPF BOARD BOTTOM VIEW DRIVER BOARD BOTTOM VIEW 8 6 ...
Страница 60: ... PA UNIT BOTTOM VIEW 8 8 ...
Страница 62: ...1 8 16 9 PLL UNIT BOTTOM VIEW 8 10 ...
Страница 64: ... FILTER BOARD BOTTOM VIEW 8 12 ...
Страница 85: ...6 9 16 Kamihigashi Hirano ku Osaka 547 0002 Japan A 5564HI S C 1999 by Icom Inc ...