Trimmer Adjustment - Icom IC-F310 Service Manual

5-3 TRIMMER ADJUSTMENT

Select an operation using [↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard.
ADJUSTMENT
REFERENCE 1 • Operating frequency : (Ch 1)
FREQUENCY
[TXF SET]
• Power selection : Low1
• Transmitting
2 • Transmitting
OUTPUT 1 • Operating frequency : (Ch 3)
POWER
[Power (Hi)]
• Power selection : High
• Transmitting
[Power (L2)] 2 • Power selection : Low2
• Transmitting
3 • Power selection : Low1
[Power (L1)]
• Transmitting
1 • Operating frequency : (Ch 3)
FM DEVIATION
[MOD N] or
[MOD W]
• Power selection : Low1
• Connect an audio generator to the [MIC]
jack and set as :
1 kHz / 40 mV
• Set an FM deviation meter as:
HPF
LPF
De-emphasis : OFF
Detector
• Transmitting
DTCS WAVE 1 • Operating frequency : (Ch 3)
FORM
• Power selection : Low1
• No audio signal is applied to the [MIC]
jack
• DTCS code
• Set an FM deviation meter as:
HPF
LPF
De-emphasis : OFF
Detector
• Transmitting
ADJUSTMENT CONDITION
155.00000 MHz [L-band]
174.00000 MHz [H-band]
146.00000 MHz [L-band]
160.00000 MHz [H-band]
146.00000 MHz [L-band]
160.00000 MHz [H-band]
: OFF
: 20 kHz
: (P–P)/2
146.00000 MHz [L-band]
160.00000 MHz [H-band]
: 007
: OFF
: 20 kHz
: (P–P)/2
MEASUREMENT
UNIT LOCATION
Rear Loosely couple a frequency
panel counter to the antenna connec-
tor.
Rear Connect an RF power meter to
panel the antenna connector.
Rear Connect an FM deviation meter
panel to the antenna
through an attenuator.
Rear Connect an FM deviation meter
panel with an oscilloscope to the
antenna connector through an
attenuator.
5 - 4
VALUE
155.00000 MHz
[L-band]
174.00000 MHz
[H-band]
155.00155 MHz
[L-band]
174.00155 MHz
[H-band]
45.0 W [LMR]
25.0 W [PMR]
10.0 W [Italy]
25.0 W [LMR]
10.0 W [PMR]
5.0 W [Italy]
4.5 W [LMR]
2.5 W [PMR, Italy]
±4.2 kHz (Wide)
connector ±2.1 kHz (Narrow)
NOTE:
[Wide/Narrow] ver-
sion must adjust
both setting.
Set to flat wave
form