Software Adjustment - Icom IC-F620 Service Manual

5-3 SOFTWARE ADJUSTMENT

Select an operation using [↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard.
ADJUSTMENT
REFERENCE 1 • Operating freq. : 430.000 MHz
FREQUENCY
[TXF]
• Output power : Low1
• Connect the RF power meter or 50 Ω
dummy load to the antenna connector.
• Transmitting
OUTPUT 1 • Operating freq. : 400.000 MHz
POWER
[Power (Hi)]
• Output power : High
• Transmitting
[Power (L2)] 2 • Output power : Low2
• Transmitting
[Power (L1)] 3 • Output power : Low1
• Transmitting
MODULATION 1 • Operating freq. : 415.000 MHz
BALLANCE
[Ballance]
• Output power : Low1
• Push [P0] key while transmitting
FM 1 • Operating freq. : 415.000 MHz
DEVIATION
[MOD W]
• Output power : Low1
• IF bandwidth
• Connect an audio generator to the [MIC]
jack through the JIG cable and set as:
1.0 kHz/40 mVrms
• Set an FM deviation meter as:
HPF
LPF
De-emphasis: OFF
Detector
• Transmitting
[MOD N] 2 • IF bandwidth
• Transmitting
CTCSS/DTCS • Operating freq. : 415.000 MHz
DEVIATON
[CTCS/DTCS]
• Output power : Low1
• IF bandwidth
• CTCSS
• DTCS code
• Set the FM deviation meter as:
HPF
LPF
De-emphasis: OFF
Detector
• No audio applied to the [MIC] connector.
• Transmitting
ADJUSTMENT CONDITION
490.000 MHz
520.000 MHz
440.000 MHz
480.000 MHz
465.000 MHz
500.000 MHz
465.000 MHz
500.000 MHz
: Wide
: OFF
: 20 kHz
: (P–P)/2
: Narrow
465.000 MHz
500.000 MHz
: Wide
: 88.5 Hz
: 007
: OFF
: 20 kHz
: (P–P)/2
MEASUREMENT
UNIT LOCATION
[L] Rear Loosely couple a frequnecy
[M] panel counter to the antenna connec-
[H] tor.
[L] Rear Connect an RF power meter to
[M] panel the antenna connector.
[H]
[L] Rear Connect an FM deviation meter
[M] panel with an oscilloscope to the
[H] antenna connector through an
attenuator.
[L] Rear Connect an FM deviation meter
[M] panel to the antenna
[H] through the attenuator.
[L] Rear Connect an FM deviation meter
[M] panel to the antenna
[H] through the attenuator.
5 - 4
VALUE
430.0000 MHz [L]
490.0000 MHz [M]
520.0000 MHz [H]
25.0 W [25W]
45.0 W [45W]
10.0 W [25W]
25.0 W [45W]
2.5 W [25W]
4.5 W [45W]
Set to square wave
form
±4.1 kHz [N/W]
connector ±3.3 kHz [N/M]
±2.1 kHz
±0.70 kHz [N/W]
connector ±0.56 kHz [N/M]