Icom IC-F50 Service Manual page 17

5-2 SOFTWARE ADJUSTMENTS (TRANSMITTING)
Select an operation using [↑] / [↓] keys, then set specified value using [←] / [→] keys on the connected computer keyboard.
ADJUSTMENT
PLL LOCK 1 • Operating CH
VOLTAGE • Receiving
[LV (RX LVA)]
2 • Operating CH
[LV (TX LVA)]
• Transmitting
3 • Operating CH
• Receiving
4 • Operating CH
• Transmitting
REFERENCE 1 • Operating CH
• Connect an RF power meter or 50 Ω
FREQUENCY
[REF] dummy load to the antenna connector.
• Transmitting
OUTPUT 1 • Operating CH
POWER • Transmitting
[Power (Hi)]
[Power (L2)] 2 • Operating CH
• Transmitting
[Power (L1)] 3 • Operating CH
• Transmitting
FM 1 • Operating CH
DEVIATION • Set the FM deviation meter as:
[MOD N] HPF
(Narrow) LPF
De-emphasis : OFF
Detector
• Connect the audio generator to the multi
connector through the JIG cable (*OPC-
966) and set as : 1.0 kHz/150 mVrms
• Transmitting
[MOD Ratio] 2 • Operating CH
(Middle) • Transmitting
[MOD Ratio] 3 • Operating CH
(Wide) • Transmitting
MODULATION 1 • Operating CH
BALANCE • No audio applied to the [MIC] input.
[BAL N] • Set an FM deviation meter as:
(Narrow) HPF
LPF
De-emphasis : OFF
Detector
• IF bandwidth
• Transmitting
[BAL Ratio] 2 • Operating CH
(Middle) • Transmitting
[BAL Ratio] 3 • Operating CH
(Wide) • Transmitting
CTCSS/DTCS • Operating CH
DEVIATION • No audio applied to the [MIC] input.
[CTCS/DTCS] • Transmitting
ADJUSTMENT CONDITION
: CH3
: CH3
: CH11
: CH11
: CH3
: CH1
: CH2
: CH3
: CH7
: OFF
: 20 kHz
: (P–P)/2
: CH8
: CH9
: CH4
: OFF
: 20 kHz
: (P–P)/2
: Narrow
: CH5
: CH6
: CH10
MEASUREMENT
UNIT LOCATION
Soft Check the "LV" item on the CS-
ware F50 ADJ's display.
Soft Check the "LV" item on the CS-
ware F50 ADJ's display.
Connect a digital multimeter to
the "LV" line.
Top Loosely couple a frequency
panel counter to the antenna connec-
tor.
Top Connect an RF power meter to
panel the antenna connector.
Top Connect an FM deviation meter
panel to the antenna
through the attenuator.
Connect an FM deviation meter
with an oscilloscope to the
antenna connector through an
attenuator.
Top Connect an FM deviation meter
panel to the antenna
through the attenuator.
5 - 4
VALUE
3.5 V
3.5 V
0.9–1.5 V
(Verify)
0.9–1.5 V
(Verify)
174.0000 MHz
5.0 W
2.0 W
1.0 W
±2.10 kHz
connector
±3.20 kHz
±4.10 kHz
Set to square wave
form
±0.68 kHz
connector