Icom IC-R8600, Руководство по обслуживанию

Страница: 17 / 84

5-5
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 CONDITION OPERATION
PREPARATION
1 – – Touch [VU1] to start
the VU-1 total gain
adjustment.
VU1 TOTAL GAIN
(Preamp OFF)
2 VU1 Total Gain PRE OFF ref • Connect the test equipment to the
[ANT1], and set as shown below:
Frequency: 50.1515 MHz
Modulation: None
Level: +60
dB μ
†
(–47 dBm)
Touch [SET].
(A beep sounds, and then
another beeps sound
after the adjustment is
completed.)
3 VU1 Total Gain PRE OFF set • Set the test equipment level to:
Level: OFF
Touch [SET].
(A beep sounds, and then
another beeps sound 10
seconds later.)
VU1 TOTAL GAIN
(Preamp ON)
4 VU1 Total Gain PRE ON ref • Set the test equipment level to:
Level: +60 dB μ † (–47 dBm)
Touch [SET].
(A beep sounds, and then
another beeps sound
after the adjustment is
completed.)
5 VU1 Total Gain PRE ON set • Set the test equipment level to:
Level: OFF
Touch [SET].
(A beep sounds, and then
another beeps sound 10
seconds later.)
VU1 S-METER
6 VU1 S0 LEVEL • Set the test equipment level to:
Frequency: 50.1515 MHz
Modulation: None
Level: 0
dB μ
†
(–107 dBm)
Touch [SET].
(A beep sounds, and then
another beeps sound 1
second later.)
7 VU1 S9 LEVEL • Set the test equipment level to:
Level: +34 dB μ
†
(–73 dBm)
8 VU1 S9+60 LEVEL • Set the test equipment level to:
Level: +94 dB μ † (–13 dBm)
9 VU1 dBu –10dB • Set the test equipment level to:
Level: –10 dB μ
†
(–117 dBm)
10 VU1 dBu 0dB • Set the test equipment level to:
Level: 0 dB μ
†
(–107 dBm)
11 VU1 dBu 10dB • Set the test equipment level to:
Level: +10 dB μ † (–97 dBm)
12 VU1 dBu 20dB • Set the test equipment level to:
Level: +20 dB μ
†
(–87 dBm)
13 VU1 dBu 40dB • Set the test equipment level to:
Level: +40 dB μ
†
(–67 dBm)
14 VU1 dBu 60dB • Set the test equipment level to:
Level: +60 dB μ † (–47 dBm)
15 VU1 dBu 80dB • Set the test equipment level to:
Level: +80 dB μ
†
(–27 dBm)
VU2 TOTAL GAIN
(Preamp OFF)
16 VU2 Total Gain PRE OFF ref • Set the test equipment to:
Frequency: 625.0215 MHz
Modulation: None
Level: +60
dB μ
†
(–47 dBm)
Touch [SET].
(A beep sounds, and then
another beeps sound
after the adjustment is
completed.)
17 VU2 Total Gain PRE OFF set • Set the test equipment level to:
Level: OFF
Touch [SET].
(A beep sounds, and then
another beeps sound 10
seconds later.)
VU2 TOTAL GAIN
(Preamp ON)
18 VU2 Total Gain PRE ON ref • Set the test equipment level to:
Level: +60 dB μ † (–47 dBm)
Touch [SET].
(A beep sounds, and then
another beeps sound
after the adjustment is
completed.)
19 VU2 Total Gain PRE ON set • Set the test equipment level to:
Level: OFF
Touch [SET].
(A beep sounds, and then
another beeps sound 10
seconds later.)
†
: The output level of the standard signal generator (SSG) is indicated as the SSG’s open circuit.