Icom IC-9700 Instruction Manual advanced - Page 41

OTHER FUNCTIONS, Measuring SWR, Protection function, Selecting the display type and font

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6. OTHER FUNCTIONS Measuring SWR The transceiver has a high-performance SWR meter. This meter displays a stable measurement in real time, even if the transmit output power varies frequently. You can measure the SWR of an antenna itself through the internal antenna tuner. 1. Select the RTTY mode. 2. Set the desired frequency band and a frequency in the portion of the band that you use the most. 3. Set the RF POWER. •• 144 MHz band: 30 W •• 430 MHz band: 30 W •• 1200MHz band: 3 W 4. Touch the TX meter several times until the SWR meter is selected. NOTE: Before transmitting, monitor the operating frequency to make sure you will not cause interference to other stations on the same frequency. 5. Hold down [PTT] on the microphone to transmit, and then read the SWR on the meter. SWR meter The best match is within this range. (1.5 or less) LIf the SWR meter indicates 1.5 or less, the antenna is matched. LIf the SWR is a high value, adjust your antenna. 6. Release [PTT] to stop transmitting. Protection function The transceiver has a 2 step protection function to protect the final power amplifiers in case the antenna SWR becomes high. The function detects the power amplifier temperature and activates when the temperature becomes too high. Power down transmission Reduces the transmission output power. ••"LMT" is displayed below while transmitting. TX inhibit Disables the transmitter. ••TX is displayed instead of disabled. while the transmitter is If the function is activated, wait until the power amplifier cools down by using the transceiver to only receive. NOTE: Do not turn OFF the transceiver power when the Protection function is activated. If you do, the cooling fan will stop and it will take longer to cool down. ••You can check the power amplifier temperature with the TEMP gauge in the Multi-function meter. Selecting the display type and font You can select between 2 display backgrounds and 2 frequency readout fonts. DDSelecting the display background 1. Select the "Display Type" screen. MENU » SET > Display > Display Type 2. Set the background A or B by rotating and then pushing MULTI . ••A: Black background (default) ••B: Blue background 3. T o close the DISPLAY screen, push EXIT several times. DDSelecting the display font 1. Select the "Display Font" screen. MENU » SET > Display > Display Font 2. Set the desired display font to "Basic" or "Round" by rotating, and then pushing MULTI . ••Basic (Default): ••Round: 3. To close the DISPLAY screen, push EXIT several times. 6-1

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6. OTHER FUNCTIONS
6-1
Measuring SWR
Protection function
Selecting the display type and font
The transceiver has a high-performance SWR meter.
This meter displays a stable measurement in real
time,
even if the transmit output power varies frequently. You
can measure the SWR of an antenna itself through the
internal antenna tuner.
1.
Select the RTTY mode.
2.
Set the desired frequency band and a frequency
in the portion of the band that you use the most.
3. Set the RF POWER.
•
144 MHz band:
30 W
•
430 MHz band:
30 W
• 1200MHz band: 3 W
4.
Touch the TX meter several times until the SWR
meter is selected.
NOTE:
Before transmitting, monitor the operating
frequency to make sure you will not cause
interference to other stations on the same
frequency.
5.
Hold down [PTT] on the microphone to transmit,
and then read the SWR on the meter.
L
If the SWR meter indicates 1.5 or less, the
antenna is matched.
L
If the SWR is a high value, adjust your antenna.
6.
Release [PTT] to stop transmitting.
SWR meter
The best match is within this range.
(1.5 or less)
The transceiver has a 2 step protection function to
protect the final power amplifiers in case the antenna
SWR becomes high.
The function detects the power amplifier temperature
and activates when the temperature becomes too high.
Power down transmission
Reduces the transmission output power.
• “LMT” is displayed below
while transmitting.
TX inhibit
Disables the transmitter.
•
TX
is displayed instead of
while the transmitter is
disabled.
If the function is activated, wait until the power
amplifier cools down by using the transceiver to only
receive.
NOTE:
Do not turn OFF the transceiver power when
the Protection function is activated. If you do, the
cooling fan will stop and it will take longer to cool
down.
•
You can check the power amplifier temperature with
the TEMP gauge in the Multi-function meter.
You can select between 2 display backgrounds and
2 frequency readout fonts.
D
Selecting the display background
1.
Select the “Display Type” screen.
MENU
»
SET > Display >
Display Type
2.
Set the background A or B by rotating and then
pushing
MULTI
.
• A: Black background (default)
• B: Blue background
3.
To close the DISPLAY screen, push
EXIT
several times.
D
Selecting the display font
1.
Select the “Display Font” screen.
MENU
»
SET > Display >
Display Font
2.
Set the desired display font to “Basic” or “Round”
by rotating, and then pushing
MULTI
.
• Basic (Default):
• Round:
3.
To close the DISPLAY screen, push
EXIT
several
times.