Receiver adjustments (continued) – Icom IC-910H User Manual
Page 24
*This output level of a standard signal generator (SSG) is indicated as SSG’s open circuit.
RECEIVER ADJUSTMENTS (continued)
430 M PEAK
(MAIN BAND)
430 M PEAK
(SUB BAND)
430 M
TOTAL GAIN
(MAIN BAND)
NOISE
BLANKER
(MAIN BAND)
(SUB BAND)
1
1
1
2
1
2
3
4
• Display frequency: 435.0200 MHz
• Mode
: FM
• Connect a standard signal generator
to [UHF ANT] connector and set as:
Frequency : 435.0200 MHz
Level
: 1 µV* (–107 dBm)
Modulation : 1 kHz/±5.0 kHz Dev.
• Receiving
• Sub display freq. : 435.0200 MHz
• Mode
: FM
• Set an SSG as
:
Frequency : 435.0200 MHz
Level
: 1 µV* (–107 dBm)
Modulation : 1 kHz/±5.0 kHz Dev.
• Receiving
• Display frequency: 435.0200 MHz
• Mode
: USB
• Set an SSG as
:
Frequency : 435.0215 MHz
Level
: 1 mV* (–47 dBm)
Modulation : OFF
• Receiving
• Set an SSG as
:
Level
: OFF
• Receiving
• Display frequency: 145.9800 MHz
• Mode
: USB
• [NB]
: OFF
• Connect an SSG to [VHF ANT] con-
nector and set as :
Frequency : 145.98150 MHz
Level
: 5.6 µV* (–92 dBm)
Modulation : OFF
and apply following signal to [VHF
ANT] connector.
• Receiving
• [NB]
: ON
• Set an SSG as
:
Level
: 3.2 µV* (–97 dBm)
• Receiving
• Sub display freq. : 145.9800 MHz
• Mode
: USB
• [NB]
: OFF
• Set an SSG as
:
Level
: 5.6 µV* (–92 dBm)
• Receiving
• [NB]
: ON
• Set an SSG as
:
Level
: 3.2 µV* (–97 dBm)
• Receiving
MAIN
MAIN
Rear
panel
MAIN
100 msec.
1 msec.
5 - 6
ADJUSTMENT
ADJUSTMENT
ADJUSTMENT CONDITION
MEASUREMENT
VALUE
POINT
UNIT
LOCATION
UNIT
ADJUST
Connect a digital
multimeter or oscillo-
scope to check point
CP851.
Connect a digital
multimeter or oscillo-
scope to check point
CP852.
Connect an AC milli-
volt meter to [EXT
SP] connector with
an 8
Ω load.
Connect an oscillo-
scope to check point
CP101.
Connect an oscillo-
scope to check point
CP701.
Maximum voltage
Maximum voltage
1.0 V (0 dB)
100 mV (20 dB of AF
level difference as step
1.)
Maximum noise wave-
form
The noise must be
blanked.
Maximum noise wave-
form
The noise must be
blanked.
PA
PA
Front
panel
PA
MAIN
L22,
L23,
L282,
L283
L280,
L281
main [AF]
volume
R61
L102,
L103
Verify
L703,
L704
Verify