Icom ID-51A Service Manual - Page 31

Bc Band], 1.010 Mhz, 87.5 Mhz, Fm Mode, Squelch

Page 31 highlights

5-3 TRANSMIT ADJUSTMENT (Continued) 5-4 RECEIVE ADJUSTMENTS (Continued) 1) Select an adjustment item (band) using /. 2) Set the SSG as specified (frequency, deviation and output level), and then push to automatically adjust. ADJUSTMENT ADJUSTMENT ITEM OPERATION SQUELCH 1 1) Set the power supply voltage to 7.4 V. - 2) Connect an SSG to the antenna connector and set as; Modulation : 1 kHz [BC BAND] -1.010 MHz- [ASQ] 2 • Set the SSG as; Frequency : (Displayed on the function display) Level : -3 dBµ (-110 dBm)† Deviation : 30% (AM) -87.5 MHz- [WSQ] 3 • Set the SSG as; Frequency : (Displayed on the function display) Level : -3 dBµ (-110 dBm)† Deviation : 52.5 kHz [A BAND] -VHFFM mode FM-N mode [VSQ] 1 • Set the SSG as; Frequency : (Displayed on the function display) Level : OFF† 2 -UHFFM mode FM-N mode 3 [USQ] 4 [AIR BAND] [ASQ] 1 1) Set the power supply voltage to 7.4 V. 2) Connect an SSG to the antenna connector and set as; Frequency : (Displayed on the function display) Level : -26 dBµ (-133 dBm)† Modulation : 1 kHz Deviation : 30% (AM) [B BAND] -VHF- -UHF- [VSQ] [USQ] 2 • Set the SSG as; Frequency : (Displayed on the function display) 3 Level : -25 dBµ (-132 dBm)† Deviation : 3.5 kHz †; This output level of a standard signal generator (SSG) is indicated as SSG's open circuit. VALUE - Push . (Automatic adjustment) 5 - 13

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60

5 - 13
5-4 RECEIVE ADJUSTMENTS (Continued)
1) Select an adjustment item (band) using
/
.
2)
Set the SSG as specified (frequency, deviation and output level), and then push
to automatically adjust.
ADJUSTMENT
ADJUSTMENT
ITEM
OPERATION
VALUE
SQUELCH
1
1) Set the power supply voltage to 7.4 V.
2)
Connect an SSG to the antenna connector and set as;
Modulation
: 1 kHz
[BC BAND]
-1.010 MHz-
[ASQ]
2
• Set the SSG as;
Frequency
: (Displayed on the function display)
Level
: –3 dBμ
(–110 dBm)
Deviation
: 30% (AM)
Push
.
(Automatic
adjustment)
-87.5 MHz-
[WSQ]
3
• Set the SSG as;
Frequency
: (Displayed on the function display)
Level
: –3 dBμ
(–110 dBm)
Deviation
: 52.5 kHz
[A BAND]
-VHF-
FM mode
[VSQ]
1
• Set the SSG as;
Frequency
: (Displayed on the function display)
Level
: OFF
FM-N mode
2
-UHF-
FM mode
[USQ]
3
FM-N mode
4
[AIR BAND]
[ASQ]
1
1) Set the power supply voltage to 7.4 V.
2)
Connect an SSG to the antenna connector and set as;
Frequency
: (Displayed on the function display)
Level
: –26 dBμ
(–133 dBm)
Modulation
: 1 kHz
Deviation
: 30% (AM)
[B BAND]
-VHF-
[VSQ]
2
• Set the SSG as;
Frequency
: (Displayed on the function display)
Level
: –25 dBμ
(–132 dBm)
Deviation
: 3.5 kHz
-UHF-
[USQ]
3
; This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.