Marti Electronics SRPT-30, Руководство пользователя

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8/7/2003
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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 immediately 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
an inch behind the POWER ADJUST bezel ring) to adjust the forward power to a desired output power as indicated on
the METER.
What Frequency Will the SRPT-30/40A Power-Up on?
SRPT-30 Only:
The SRPT-30 will power-up on frequency F1 or F2 depending on the position of the F1/F2 front panel switch. The
frequencies corresponding to F1 and F2 were determined at the time of order and are hard coded within the synthesizer.
SRPT-40A Only:
The SRPT-40A will always power up on the last frequency it was locked onto before last power-down. If you’re not
sure what frequency the SRPT-40A will power up on, first make sure that the POWER ADJUST pot is at a minimum
(turned fully counter-clockwise) before powering up the SRPT-40A. After the SYNTHESIZER is locked and the
TRANSMIT/STANDBY switch is set in the TRANSMIT position, monitor the RF output with a frequency counter. If
necessary, increase the POWER ADJUST pot (turn clockwise) slowly until the frequency counter registers a frequency
reading.
WARNING
NEVER CONNECT THE FREQUENCY COUNTER DIRECTLY TO THE RF OUTPUT CONNECTOR
OF THE SRPT-30 OR SRPT-40A.
THE FREQUENCY COUNTER SHOULD BE COUPLED OFF OF AN RF COUPLER OR A WATT
METER.
EXCEEDING THE INPUT POWER RATING OF THE FREQUENCY COUNTER COULD DO
INTERNAL DAMAGE TO IT.
Inputting Audio
Plug in microphones (Inputs 1 - 3) or tape player (Input 4 internally switched to “HI” position; See MIC Input
Connections, above) and check operation by setting the METER CONTROL knob to the AUDIO COMPRESSION
position and observing the compression on METER and by a headset plugged into MONITOR jack. Set AUDIO GAIN
controls paragraph in the CONTROL & CONNECTOR FUNCTIONS section for how to adjust for no more than -3 VU
audio compression on the METER.