<FRONT PANEL>
<FRONT & REAR PANEL>
1. Meter Display : Indicates FWD/REV power in watts and VSWR ratio
2. Function switch : Selects FWD/REV power, Calibration, and VSWR
3. Range switch : Selects RF power range of 5/20/200W
4. Calibration control knob : Sets full scale deflection when
measuring VSWR
5. AVG/PEP MONI. (elliptical push button) : Selects Average or
PEP RF Power readings
<REAR PANEL>
6. Meter Zero Adj. : Machnical zero adjustment for meter needle
7.TX connector : Coax connector to transmitter 50 ohm RF output
8.ANT connector : Coax connector to 50 ohm antenna system
9. 13.8V DC connection for meter illumination
10. HF/VUHF band switch : available on RS-502 only
11&12. 2nd pair of TX/ANT connector : available on RS-502 only
<INSTALLATION>
<FORWARD POWER MEASUREMENT>
Transmitter SWR Meter
1. Set the FUNCTION switch to FWD
2. Set the radio transceiver to transmit mode and read the scale
corresponding to the Power Range selected (5W,20W,or 200W)
3. When the AVG/PEP button is 'out', the meter reads average RF power.
When the button is 'depressed', the meter reads Peak Envelope Power
for use with SSB and AM transmissions. In this mode, there will be a
slow rise and decay time.
DC power supply
<REVERSE POWER MEASUREMENT>
This measures the reverse power on the coaxial cable between transceiver
<OPERATION>
and antenna. The rest of the settings are the same as that of
Transmitter Forward
FORWARD POWER MEASUREMENT>
<VSWR MEASUREMENT>
1. Set the radio transceiver to transmit mode and Function Switch to CAL.
2. Slowly turn the CAL. control knob clockwise until the meter pointer is at
meter full scale
3. Now set the Function Switch to SWR position whilst still transmitting, the
meter will indicate VSWR ratio (Note : handheld and mobile have H/L
range, when using 'H' range, read the upper SWR dial. Using 'L' range,
SWR Meter
read the lower SWR dial)
[CAUTION]
Transmitter Reversed
1.Since the meter movement is very sensitive, avoid excessive vibration or
mechanical shock to the meter.
2.The absolute maximum power should be applied to the meter is 200W.
Also observe maximum power inputs of 5W and 20W when using the two
lower ranges.
3.The meter must never be reverse connected. Always observe the correct
connections to transmitter and antenna as indicated on the rear sockets.
4.Do not expose the meter to excessive temperatures, high humidity, or
SWR Meter
strong magnetic fields.