Icom IC-7000 Service Manual - Page 28

RECEIVER ADJUSTMENT continue, Tuned BPF170 M, Total Gain144M/430M, S0 LevelWFM - sensitivity

Get Icom IC-7000 PDF manuals and user guides View all Icom IC-7000 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 28 highlights

4-5 RECEIVER ADJUSTMENT (continue) ADJUSTMENT ADJUSTMENT CONDITION DISPLAY OPERATION RECEIVE 6 • Set an SSG as ; SENSITIVITY Frequency : 169.8015 MHz (VHF/UHF) • Receiving Tuned BPF(170 M) Push [F-4 (SET)]. 7 • Set an SSG as ; Frequency : 400.2015 MHz • Receiving Tuned BPF(400 M) Push [F-4 (SET)]. 8 • Set an SSG as ; Frequency : 435.2015 MHz • Receiving Tuned BPF(435 M) Push [F-4 (SET)]. 9 • Set an SSG as ; Frequency : 469.8015 MHz • Receiving Tuned BPF(470 M) Push [F-4 (SET)]. RX TOTAL GAIN (VHF/UHF) 1 • Connect an SSG to [ANT2] con- nector and set as; Frequency : 435.2015 MHz Level : 500 µV* (-53 dBm) or OFF Modulation : OFF • Connect an AC millivolt meter to [EXT SP] jack with an 8 Ω load. • Receiving Total Gain(144M/430M) Set 25 dB of AF level difference between 500 µV and no signal input from the SSG using with [DIAL]. Then push [F-4 (SET)]. S-METER (WFM) 1 • Connect an SSG to the [ANT2] connector and set as; Frequency : 90.80 MHz Level : 0.56 µV* (-112 dBm) Modulation : OFF • Receiving S0 Level(WFM) Push [F-4 (SET)]. 2 • Set an SSG as; Level : 3.2 µV* (-97 dBm) • Receiving S9 Level(WFM) Push [F-4 (SET)]. 3 • Set an SSG as; Level : 32 µV* (-77 dBm) • Receiving S9+60 Level(WFM) Push [F-4 (SET)]. After the adjustment, exit the adjustment mode. ADJUSTMENT ADJUSTMENT CONDITION MEASUREMENT UNIT LOCATION VALUE ADJUSTMENT UNIT ADJUST WFM 1 • Operating freq : 90.00000 MHz DISTORTION MODE : WFM Preamp : ON • Connect an SSG to [ANT2] con- nector and set as; Frequency : 90.0000 MHz Level : 3.2 µV* (-97 dBm) Modulation : 1 kHz Deviation : 50 kHz • Receiving REAR Connect a distortion me- M i n i mu m A F panel ter to [EXT SP] jack with distortion level an 8 Ω load. MAIN C1423 *The output level of a standard signal generator (SSG) is indicated as SSG's open circuit. 4 - 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
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
4 - 13
4-5 RECEIVER ADJUSTMENT (continue)
ADJUSTMENT
ADJUSTMENT CONDITION
DISPLAY
OPERATION
RECEIVE
SENSITIVITY
(VHF±UHF)
6
•
Set an SSG as ;
Frequency
: 169.8015 MHz
• Receiving
Tuned BPF(170 M)
Push [F-4 (SET)].
7
•
Set an SSG as ;
Frequency
: 400.2015 MHz
• Receiving
Tuned BPF(400 M)
Push [F-4 (SET)].
8
•
Set an SSG as ;
Frequency
: 435.2015 MHz
• Receiving
Tuned BPF(435 M)
Push [F-4 (SET)].
9
•
Set an SSG as ;
Frequency
: 469.8015 MHz
• Receiving
Tuned BPF(470 M)
Push [F-4 (SET)].
RX
TOTAL GAIN
(VHF±UHF)
1
•
Connect an SSG to [ANT2] con-
nector and set as;
Frequency
: 435.2015 MHz
Level
:
500 μV* (–53 dBm)
or OFF
Modulation
: OFF
•
Connect an AC millivolt meter to
[EXT SP] jack with an 8
Ω
load.
• Receiving
Total Gain(144M/430M)
Set 25 dB of AF level difference between
500 μV and no signal input from the SSG
using with [DIAL]. Then push [F-4 (SET)].
S-METER
(WFM)
1
•
Connect an SSG to the [ANT2]
connector and set as;
Frequency
: 90.80 MHz
Level
: 0.56 μV*(–112 dBm)
Modulation
: OFF
• Receiving
S0 Level(WFM)
Push [F-4 (SET)].
2
•
Set an SSG as;
Level
: 3.2 μV* (–97 dBm)
• Receiving
S9 Level(WFM)
Push [F-4 (SET)].
3
•
Set an SSG as;
Level
: 32 μV* (–77 dBm)
• Receiving
S9+60 Level(WFM)
Push [F-4 (SET)].
After the adjustment, exit the adjustment mode.
*The output level of a standard signal generator (SSG) is indicated as SSG's open circuit.
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
ADJUSTMENT
UNIT
LOCATION
UNIT
ADJUST
WFM
DISTORTION
1
•
Operating freq : 90.00000 MHz
MODE
: WFM
Preamp
: ON
•
Connect an SSG to [ANT2] con-
nector and set as;
Frequency
: 90.0000 MHz
Level
: 3.2 μV* (–97 dBm)
Modulation
: 1 kHz
Deviation
: 50 kHz
• Receiving
REAR
panel
Connect a distortion me-
ter to [EXT SP] jack with
an 8
Ω
load.
Minimum AF
distortion level
MAIN
C1423