Transmitter Adjustment - Icom IC-F1610 Service Manual

5-5 TRANSMITTER ADJUSTMENT

ADJUSTMENT ADJUSTMENT CONDITIONS
OUTPUT 1 • Operating frequency
POWER • Enter Initial Set Mode No. 6.
Refer to page 5-2 for details.
FM 1 • Operating frequency
DEVIATION • Enter Initial Set Mode No. 4.
Refer to page 5-2 for details.
• Connect an audio generator to the
microphone connector and set as:
1 kHz/35 mV
• Set an FM deviation meter as:
HPF
LPF
De-emphasis : OFF
Detector
• Wide/Narrow setting
2 • Wide/Narrow setting
DTCS WAVE 1 • Operating frequency
• Enter Initial Set Mode No. 4.
FORM AND
DEVIATION Refer to page 5-2 for details.
• No AF signals are applied to the micro-
2
phone connector.
• Set an FM deviation meter as:
HPF
LPF
De-emphasis : OFF
Detector
• Wide/Narrow setting
• DTCS code
3
• Wide/Narrow setting
4
• Operating frequency
CTCSS 1
• Enter Initial Set Mode No. 4.
TONE
Refer to page 5-2 for details.
DEVIATION
• No AF signals are applied to the micro-
phone connector.
• Set an FM deviation meter as:
HPF
LPF
De-emphasis : OFF
Detector
• Wide/Narrow setting
• CTCSS tone frequency: 67.0 Hz
2 • Wide/Narrow setting
: 146.000 MHz Connect an RF power meter to
the antenna connector.
NOTE: When the RF output power cannot be set with this proce-
: 146.000 MHz Connect an FM deviation
meter to the antenna connec-
tor through an attenuator.
: OFF
: 20 kHz
: (P–P)/2
: Wide
: Narrow
: 146.000 MHz Connect an FM deviation
meter with an oscilloscope to
the antenna connector through
an attenuator.
: OFF
: 20 kHz
: (P–P)/2
: Wide
: 007
: Narrow
: 146.000 MHz Connect an FM deviation
meter to the antenna connec-
tor through an attenuator.
: OFF
: 20 kHz
: (P–P)/2
: Wide
: Narrow
5 - 5
MEASUREMENT
METHOD
25 W
10 W
2.5 W
dure, cloning may be necessary to cancel the output power
setting.
±4.1 kHz
±1.75–±2.2 kHz
Maximum wave
form
Set to flat wave
form
±0.7 kHz
±0.25–±0.5 kHz
±0.7 kHz
±0.25–±0.5 kHz
ADJUSTMENT
VALUE ADJUST
Rotate volume
control while
pushing
P
3
Rotate volume
control while
pushing
P
2
Rotate volume
control while
pushing
P
1
Rotate volume
control while
pushing
P
3
Verify
Rotate volume
control while
pushing
P
2
Rotate volume
control while
pushing
P
1
Rotate volume
control while
pushing
P
2
Verify
Rotate volume
control while
pushing
P
2
Verify