Marti Electronics SRPT-40A User Manual page 23

NEVER INSTALL AND CONNECT THE 12-15 VOLT AND THE 15-30 VOLT SUPPLIES AT THE SAME TIME.
ALSO, NEVER CONNECT THE 15-30 VOLT SUPPLY TO THE 12-15 VOLT PINS AND NEVER CONNECT THE
DOING SO MAY DAMAGE THE INTERNAL SWITCHING SUPPLY OR EITHER OF THE EXTERNAL DC
Connect up Antenna
Connect antenna to the ANTENNA connector on the SRPT-40A rear panel. Connection of various antenna systems
is covered under INSTALLATION and ANTENNAS.
DO NOT TURN ON AC LINE OR EXTERNAL DC POWER UNTIL ANTENNA HAS BEEN
Power-Up SRPT-40A
If using AC line, turn on SRPT-40A by turning on front panel AC LINE switch.
If using 12-15 Volt or 15-30 Volt external DC supply, turn on SRPT-40A by turning on external DC supply. The
front panel AC LINE switch has no control of external DC supply.
The SRPT-40A will begin a power-up routine. The front panel meter will illuminate immediately. After about three
seconds the AFC LOCK LED will begin flashing green indicating that the synthesizer is searching for the last frequency
it was last locked on to.
If the TRANSMIT/STANDBY switch is in the TRANSMIT position, the TRANSMIT LED will flash red in unison
with the green flashing AFC LOCK LED. Once the synthesizer has found and locked onto the frequency, the AFC
LOCK LED will immediately stay on solid green and the TRANSMIT LED will continue to flash red for three
additional seconds. After the three seconds, the SYNTHESIZER will be ready, will enable the power amplifier to
transmit RF power, and the TRANSMIT LED will stay on solid red.
If the TRANSMIT/STANDBY switch is in the STANDBY position, the TRANSMIT LED and hence, the
transmitter RF power, will be off and will stay off even after the SYNTHESIZER has locked and the AFC LOCK LED
has illuminated solid green. When the TRANSMIT/STANDBY switch is placed in the TRANSMIT position (and three
seconds have elapsed since the SYNTHESIZER became locked) the PA will begin transmitting and the TRANSMIT
LED will illuminate solid red.
Adjusting Output Power
Turn the METER CONTROL knob to the FORWARD POWER position and observe the forward power reading on
the top scale of the METER. Using a small flat-head screwdriver, adjust the POWER ADJUST pot (located about ¾ of
CAUTION & WARNING
12-15 VOLT SUPPLY TO THE 15-30 VOLT PINS.
CAUTION
PROPERLY CONNECTED TO ANTENNA CONNECTOR!
SUPPLIES.
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