Marti Electronics SRPT-30, Руководство пользователя

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8/7/2003
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CALIBRATION AND
ADJUSTMENTS
Refer to Location of Adjustments Drawing No. 702-122 and appropriate schematic
diagrams for each module.
This equipment was thoroughly tested and inspected at the factory prior to shipment. The actual
equipment performance was recorded on the SRPT-30/40A TRANSMITTER FACTORY TEST
REPORT. Adjustments should rarely be necessary in the field and should be attempted only by
highly trained technicians familiar with this type of equipment. Laboratory grade test equipment is
required and is listed under TEST EQUIPMENT AND TOOLS. For location of adjustments and test
points in the SRPT-30/40A Transmitter refer to Adjustment Location Diagram, 702-122.
NOTE
FOR ALL ADJUSTMENTS, REMOVE THE TOP COVER FROM THE SRPT-30/40A CHASSIS.
REPLACE THE COVER WHEN THE ADJUSTMENT PROCEDURE IS COMPLETE.
AC Line Input Selection - 110-120 VAC or 220-240 VAC
WARNING
ON FIRST TIME USAGE, WE RECOMMEND THAT THE OPERATOR VERIFIES THAT THE AC
INPUT SELECTOR SWITCH IS IN THE POSITION THAT CORRESPONDS TO YOUR AC INPUT
REQUIREMENTS.
1. Remove AC line voltage from SRPT-30/40A.
2. Remove the 800-166A COMPRESSOR AUDIO board.
3. View the side of the 800-383A Switching Power Supply as shown. For 110-120 VAC applications, the switch
should read “115” and positioned toward the front of the unit. For 220-240 VAC applications, the switch
should read “230” and positioned toward the back of the unit.
4. If the switch position is not in your required position, take a small flat-head screwdriver and switch the AC
INPUT switch to the required position.
5. Replace the 800-166A COMPRESSOR AUDIO board.
Switching Power Supply Voltage Adjustment
The input to the switching power supply can be from 110-120 or 220-240 VAC, 50/60 Hz. The DC B+ output,
measured off of one of the red wires of the switching supply, can be slightly adjusted at B+ ADJUST. The recommended
B+ reading should be 13.0 volts.