Frequency Adjustment - Icom IC-RX7 Service Manual Addendum

5-2 ADJUSTMENTS
ADJUSTMENT
REFERENCE 1
FREQUENCY
CP6
GND
*Displayed frequency is differ according to versions.
ADJUSTMENT
BAR ANTENNA 1
SENSITIVITY
(Low MF)
(High MF) 2
STANDARD SIGNAL GENERATOR
COMMON SETTING;
Modulation : 1 kHz
Deviation : 30%
Level : –20 dBm
DISPLAYED ITEM
1) Remove the front panel and LOGIC UNIT to expose
[REF] 2) Connect a Frequency Counter to the CP6 on the
3) Adjust the frequency using [DIAL] then push [ENT MW]
MAIN UNIT (under the LOGIC UNIT)
50 Ω coaxial cable
(ex. RG-174/U)
DISPLAYED ITEM
1) Inductive coupple an SSG to the internal AM bar
2) Set the SSG as;
[ANL]
3) Push [ENT MW] key.
1) Inductive coupple an SSG to the internal AM bar
2) Set the SSG as;
[ANH]
3) Push [ENT MW] key.
OPERATION
the MAIN UNIT. (Refer to the DISASSEMBLY
INSTRUCTION)
MAIN UNIT through a thin coaxial cable as below.
key.
OPERATION
anttena.
Frequency : (Displayed on the function display)
Modulation : 1 kHz
Deviation : 30% (AM)
Level : –20 dBm
anttena.
Frequency : (Displayed on the function display)
Modulation : 1 kHz
Deviation : 30% (AM)
Level : –20 dBm
(Inductive coupling)
5 - 2
VALUE
19.2000 MHz
±3 ppm
FREQUENCY COUNTER
(0.1–30 MHz)
50 Ω coaxial cable
[ENT] key
VALUE
(Automatic
adjustment)
Internal AM bar antenna