Icom IC-R9500 Service Manual - Page 23

Receive Adjustments (vhf And Uhf) [rx-v/u

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NOTE: HOLD the adjustment condition (SG level and frequency etc.) until next ADJ item is displayed. ADJUSTMENT ITEM ADJUSTMENT CONDITION OPERATION ATTENUATION [HF ATT 6dB] [HF ATT 12dB] [HF ATT 24dB] ROOFING FILTER LOSS [HF FIL 3k LOSS] [HF FIL 6k LOSS] [HF FIL 50k LOSS] • Set the SG as; Frequency : 14.1515 MHz Level : +40 dBu • Set the SG as; Frequency : 14.1515 MHz Level : +40 dBu Push [F-7] key. Push [F-7] key. Push [F-7] key. Push [F-7] key. Push [F-7] key. Push [F-7] key. 4-5 RECEIVE ADJUSTMENTS (VHF and UHF) [RX-V/U] VALUE (Automatic adjustment) (Automatic adjustment) • Push [F-2•RX V/U] key to select RX V/U ADJUSTMENT. • Connect an AC milivoltmeter to the [EXT-SP] jack. • Connect an SG to [ANT1/HF ANT3], and set as; Modulation : None NOTE: HOLD the adjustment condition (SG level and frequency etc.) until next ADJ item is displayed. ADJUSTMENT ITEM ADJUSTMENT CONDITION OPERATION VALUE TUNED LPF [Tuned LPF LOW] • Set the SG as; Rotate [MAIN DIAL] to adjust the AF Frequency : 1057.4215 MHz output level. Level : +50 dBu Push [F-7] key. Modulation : None Minimum AF level [Tuned LPF MID1] • Set the SG as; Rotate [MAIN DIAL] to adjust the AF Frequency : 1307.4215 MHz output level. Level : +40 dBu Push [F-7] key. [Tuned LPF MID2] (Same as above) Rotate [MAIN DIAL] to set the adjustment "C7" value. Push [F-7] key. [Tuned LPF HIGH] (Same as above) Rotate [MAIN DIAL] to set the adjustment "D7" value. Push [F-7] key. TUNED HPF [Tuned HPF LOW] (Same as above) Rotate [MAIN DIAL] to set the adjustment "00" value. Push [F-7] key. [Tuned HPF MID1] (Same as above) Rotate [MAIN DIAL] to set the adjustment "05" value.Push [F-7] key. [Tuned HPF MID2] (Same as above) Rotate [MAIN DIAL] to set the adjustment "10" value.Push [F-7] key. [Tuned HPF HIGH] (Same as above) Rotate [MAIN DIAL] to set the adjustment "80" value.Push [F-7] key. 4 - 6

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4 - 6
ADJUSTMENT ITEM
ADJUSTMENT CONDITION
OPERATION
VALUE
ATTENUATION
[HF ATT 6dB]
• Set the SG as;
Frequency
: 14.1515 MHz
Level
: +40 dBu
Push [F-7] key.
(Automatic
adjustment)
[HF ATT 12dB]
Push [F-7] key.
[HF ATT 24dB]
Push [F-7] key.
ROOFING FILTER LOSS
[HF FIL 3k LOSS]
• Set the SG as;
Frequency
: 14.1515 MHz
Level
: +40 dBu
Push [F-7] key.
(Automatic
adjustment)
[HF FIL 6k LOSS]
Push [F-7] key.
[HF FIL 50k LOSS]
Push [F-7] key.
ADJUSTMENT ITEM
ADJUSTMENT CONDITION
OPERATION
VALUE
TUNED LPF
[Tuned LPF LOW]
• Set the SG as;
Frequency
: 1057.4215 MHz
Level
: +50 dBu
Modulation
: None
Rotate
[MAIN DIAL]
to adjust the AF
output level.
Push [F-7] key.
Minimum AF
level
[Tuned LPF MID1]
• Set the SG as;
Frequency
: 1307.4215 MHz
Level
: +40 dBu
Rotate
[MAIN DIAL]
to adjust the AF
output level.
Push [F-7] key.
[Tuned LPF MID2]
(Same as above)
Rotate
[MAIN DIAL]
to set the adjustment
value.
Push [F-7] key.
“C7”
[Tuned LPF HIGH]
(Same as above)
Rotate
[MAIN DIAL]
to set the adjustment
value.
Push [F-7] key.
“D7”
TUNED HPF
[Tuned HPF LOW]
(Same as above)
Rotate
[MAIN DIAL]
to set the adjustment
value.
Push [F-7] key.
“00”
[Tuned HPF MID1]
(Same as above)
Rotate
[MAIN DIAL]
to set the adjustment
value.Push [F-7] key.
“05”
[Tuned HPF MID2]
(Same as above)
Rotate
[MAIN DIAL]
to set the adjustment
value.Push [F-7] key.
“10”
[Tuned HPF HIGH]
(Same as above)
Rotate
[MAIN DIAL]
to set the adjustment
value.Push [F-7] key.
“80”
4-5 RECEIVE ADJUSTMENTS (VHF and UHF) [RX-V/U]
• Push [F-2•RX V/U] key to select RX V/U ADJUSTMENT.
• Connect an AC milivoltmeter to the [EXT-SP] jack.
• Connect an SG to [ANT1/HF ANT3], and set as;
Modulation
: None
NOTE:
HOLD
the adjustment condition (SG level and frequency
etc.) until next ADJ item is displayed.
NOTE:
HOLD
the adjustment condition (SG level and frequency
etc.) until next ADJ item is displayed.