Vu Receive Adjustment - Icom IC-R8600 Service Manual

5-4

VU RECEIVE ADJUSTMENT

• Touch [VU-RX] on the main menu screen.
NOTE: DO NOT change the test equipment output level until the second beeps sound.
ADJUSTMENT ADJUSTMENT ITEM DISPLAY
1 –
PREPARATION
2 VU1 Total Gain PRE OFF ref
VU1 TOTAL GAIN
(Preamp OFF)
3 VU1 Total Gain PRE OFF set
4 VU1 Total Gain PRE ON ref
VU1 TOTAL GAIN
(Preamp ON)
5 VU1 Total Gain PRE ON set
6 VU1 S0 LEVEL
VU1 S-METER
7 VU1 S9 LEVEL
8 VU1 S9+60 LEVEL
9 VU1 dBu –10dB
10 VU1 dBu 0dB
11 VU1 dBu 10dB
12 VU1 dBu 20dB
13 VU1 dBu 40dB
14 VU1 dBu 60dB
15 VU1 dBu 80dB
16 VU2 Total Gain PRE OFF ref
VU2 TOTAL GAIN
(Preamp OFF)
17 VU2 Total Gain PRE OFF set
18 VU2 Total Gain PRE ON ref
VU2 TOTAL GAIN
(Preamp ON)
19 VU2 Total Gain PRE ON set
: The output level of the standard signal generator (SSG) is indicated as the SSG's open circuit.
†
CONDITION
–
• Connect the test equipment to the
[ANT1], and set as shown below:
Frequency: 50.1515 MHz
Modulation: None
Level: +60 dBμ (–47 dBm)
†
• Set the test equipment level to:
Level: OFF
• Set the test equipment level to:
Level: +60 dBμ (–47 dBm)
†
• Set the test equipment level to:
Level: OFF
• Set the test equipment level to:
Frequency: 50.1515 MHz
Modulation: None
Level: 0 dBμ (–107 dBm)
†
• Set the test equipment level to:
Level: +34 dBμ (–73 dBm)
†
• Set the test equipment level to:
Level: +94 dBμ † (–13 dBm)
• Set the test equipment level to:
Level: –10 dBμ † (–117 dBm)
• Set the test equipment level to:
Level: 0 dBμ (–107 dBm)
†
• Set the test equipment level to:
Level: +10 dBμ (–97 dBm)
†
• Set the test equipment level to:
Level: +20 dBμ (–87 dBm)
†
• Set the test equipment level to:
Level: +40 dBμ (–67 dBm)
†
• Set the test equipment level to:
Level: +60 dBμ † (–47 dBm)
• Set the test equipment level to:
Level: +80 dBμ † (–27 dBm)
• Set the test equipment to:
Frequency: 625.0215 MHz
Modulation: None
Level: +60 dBμ (–47 dBm)
†
• Set the test equipment level to:
Level: OFF
• Set the test equipment level to:
Level: +60 dBμ † (–47 dBm)
• Set the test equipment level to:
Level: OFF
5-5
OPERATION
Touch [VU1] to start
the VU-1 total gain
adjustment.
Touch [SET].
(A beep sounds, and then
another beeps sound
after the adjustment is
completed.)
Touch [SET].
(A beep sounds, and then
another beeps sound 10
seconds later.)
Touch [SET].
(A beep sounds, and then
another beeps sound
after the adjustment is
completed.)
Touch [SET].
(A beep sounds, and then
another beeps sound 10
seconds later.)
Touch [SET].
(A beep sounds, and then
another beeps sound 1
second later.)
Touch [SET].
(A beep sounds, and then
another beeps sound
after the adjustment is
completed.)
Touch [SET].
(A beep sounds, and then
another beeps sound 10
seconds later.)
Touch [SET].
(A beep sounds, and then
another beeps sound
after the adjustment is
completed.)
Touch [SET].
(A beep sounds, and then
another beeps sound 10
seconds later.)