Selecting The Meter Readout; Digital Multi-Function Meter - Icom IC-7851 Instruction Manual

■ Selecting the Meter readout

The S/RF meter readout during transmit can be se-
lected from the following items.
➥
Push the Multi-function [METER](
times to select the desired meter item.
• The selectable meters are:
 SWR  ALC  COMP  V
P o
Displays the RF output power in watts.
Displays the VSWR on the transmission
line.
Displays the ALC level. The ALC circuit be-
gins to activate when the RF output power
reaches a preset level.
Displays the compression level when the
speech compressor is in use.
Displays the drain current of the final ampli-
fier MOS-FETs.
Displays the drain terminal voltage of the
final amplifier MOS-FETs.
D Digital multi-function meter
The digital multi-function meter can simultaneously
display all transmit parameters on the LCD display.
➥
Hold down the Multi-function [METER](
second.
• The digital multi-function meter is displayed.
• Hold down the Multi-function [METER]() key for 1 sec-
ond to turn OFF the meter.
➥
Push [P-HOLD](F) to turn ON the peak level hold
function.
• "P-HOLD" is displayed in the window title when the func-
tion is ON.
) key several
 I
d d in that order.
) key for 1
4-11
Signal strength level
readout
I d readout
S
I
D
Power level readout
SWR readout
Compression level
ALC level readout
readout
() Multi-function keys
Pushing [P-HOLD](F) toggles ON and OFF.
BASIC OPERATION
9 +
20
5
+
40
1 +
5
10
0
50 100 150
15
200
10
0
250
2 3
Po W
1.5
20
10
1
0
SWR
dB
COMP
ALC 44 52V
V
D
V
readout
d
4
60dB
A