Icom IC-7410 Service Manual - Page 28

Receive Adjustments, Adjustment Item, Transceiver's, Condition, Operation, Measure, Point, Adjust

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¤ RECEIVE ADJUSTMENTS RX HF Reterns to the previous screen. MENU Starts the receiveadjustment. Stores the value and move to the next ite ADJUSTMENT ITEM PREPARATION TOTAL GAIN ADJUSTMENT TRANSCEIVER'S CONDITION OPERATION MEASURE POINT • Connect an SSG to [ANT1], and - then set it as; - Frequency : 14.1515 MHz Modulation : None Level : +20 dBu (-87 dBm) 1 • Display: "Total Gain HF POFF" - - • Receiving 2 • Display: "Total Gain HF PON" - - • Receiving EXTERNAL AGC 3 • Display: "AGC (HF)" • Receiving • Set the SSG as; - Level : +70 dBu (-37 dBm) S-METER NOTE: DO NOT change the output level of the SSG until the beep sounds. 4 • Display: "S0 Level HF" • Set the SSG as; - • Receiving Level : OFF 5 • Display: "S9 Level HF" • Receiving 6 • Display: "S9+60 Level HF" • Receiving • Set the SSG as; Level : +34 dBu (-73 dBm) • Set the SSG as; Level : +90 dBu (-17 dBm) Automatically returns to the receive adjustment menu. ADJUST POINT - - - - - VALUE - Push [F-5]. (Beeps sound 12 sec. later) Push [F-5]. (Beeps sound 12 sec. later) Push [F-5]. (Beeps sound 22 sec. later) Push [F-5]. (Beep sounds, and then anoter beep sounds 0.5 sec. later) Push [F-5]. (Beep sounds, and then anoter beep sounds 1 sec. later) 4 - 10

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4 - 10
ADJUSTMENT ITEM
TRANSCEIVER'S
CONDITION
OPERATION
MEASURE
POINT
ADJUST
POINT
VALUE
PREPARATION
–
•
Connect an SSG to [ANT1], and
then set it as;
Frequency : 14.1515 MHz
Modulation
: None
Level
:
+20 dBu (–87 dBm)
–
–
–
TOTAL GAIN
ADJUSTMENT
1
• Display:
"Total Gain HF POFF"
• Receiving
–
–
–
Push [F-5].
(Beeps sound
12 sec. later)
2
• Display:
"Total Gain HF PON"
• Receiving
–
–
–
Push [F-5].
(Beeps sound
12 sec. later)
EXTERNAL AGC
3
• Display: "AGC (HF)"
• Receiving
• Set the SSG as;
Level
:
+70 dBu (–37 dBm)
–
–
Push [F-5].
(Beeps sound
22 sec. later)
S-METER
NOTE: DO NOT
change the output level of the SSG until the beep sounds.
4
• Display: "S0 Level HF"
• Receiving
• Set the SSG as;
Level
: OFF
–
–
Push [F-5].
(Beep sounds,
and then anoter
beep sounds
0.5 sec. later)
5
• Display: "S9 Level HF"
• Receiving
• Set the SSG as;
Level
:
+34 dBu (–73 dBm)
Push [F-5].
(Beep sounds,
and then anoter
beep sounds
1 sec. later)
6
• Display: "S9+60 Level HF"
• Receiving
• Set the SSG as;
Level
:
+90 dBu (–17 dBm)
Automatically returns to the receive adjustment menu.
¤
RECEIVE ADJUSTMENTS
MENU
HF
RX
Reterns to the previous screen.
Stores the value and move to the next ite
Starts the receiveadjustment.