Marti RPT-30, User Manual

Page: 15 / 43

METER
The VU METER serves the function of indicating the
relative power supply voltage, relative RF power output,
and the amount of audio compression. The METER indi-
cates RF output only when the CONTROL switch is in
the “TRANSMIT” position.
ANTENNA Connector
Connection of various antenna systems is covered un-
der
INSTALLATION
and
ANTENNAS
. It is only necessary
for the operator or announcer to see that the ANTENNA
connector is tight and that the antenna is clear of objects
which may affect its radiation efficiency.
CAUTION:
THE ANTENNA MUST BE CONNECTED BEFORE
SWITCHING TO “TRANSMIT”.
RECVR Connector
If the RPT-30 is equipped with optional antenna relay,
the transmit antenna can be used for receiving by
connecting a coaxial cable (No. 585-026) between the
RECV jack on the RPT-30 and ANTENNA connector of
the receiver (MARTI AR-10). To silence the receiver
while transmitting, Mute Cable No. 585-038-2 is plugged
into the ACCESSORY connector on each unit.
ANTENNA (WARNING LIGHT)
The red LED light marked “ANTENNA” which is to
the right of the METER on the RPT-30 front panel,
flashes to indicate a problem with the antenna when
transmitting. The ANTENNA (WARNING LIGHT)
flashes if the CONTROL switch is switched to
“TRANSMIT” without an antenna connected. It can also
indicate a defective antenna, coaxial cable, or connector;
or improper location of a portable antenna. Prolonged
operation under these conditions can damage the
transmitter.
TEMP (WARNING LIGHT)
Flashing of the TEMP (WARNING LIGHT) indicates
excessive operating temperature within the transmitter.
This can be caused by obstructed vent holes in the top or
rear of the unit, inoperative cooling fan, or antenna prob-
lems. Do not operate RPT-30 until the cause of overheat-
ing is corrected!
STEP BY STEP RPT-30 OPERAT-
ING PROCEDURE
1. Position CONTROL switch to “OFF”, then plug RPT-
30 into a 115 volt, AC, grounded, 3-prong receptacle.
WARNING
THIS EQUIPMENT MUST BE OPERATED WITH
A 3-PRONG, GROUNDED, 115 VOLT, AC
OUTLET RECEPTACLE!
FAILURE TO USE A PROPERLY GROUNDED
OUTLET COULD RESULT IN A SAFETY HAZ-
ARD OR FAULTY EQUIPMENT PERFORMANCE.
IF AN EXTENSION CORD IS USED, IT
MUST BE THE THREE-WIRE GROUNDING
TYPE TO INSURE SAFETY.
DO NOT CUT OFF THE GROUND PIN OF A 3
PRONG PLUG!!
2. Connect antenna to the ANTENNA connector on the
RPT-30 rear panel.
3. Place CONTROL switch in “STANDBY” position.
(Allow for a 2 minute warm-up!)
4. 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 ob-
serving compression on METER and by headset plugged
into MONITOR jack. Set GAIN controls for no more
than -3 VU audio compression on the METER.
5.
To transmit, move CONTROL switch to
“TRANSMIT” position. The METER should read 0 VU
±
3 VU with METER switch in “RF OUTPUT” position.
6. If the ANTENNA (WARNING LIGHT) flashes in
“TRANSMIT” operation, switch transmitter “OFF” im-
mediately and check antenna, connectors, and coaxial
cable. Placing antenna too near a wall or other object can
cause ANTENNA (WARNING LIGHT) to flash.
7. Flashing of the TEMP (WARNING LIGHT) indi-
cates: (a) Obstructed vent holes in top or rear of unit. (b)
Fan not operating. (c) Improper tuning, antenna load, or
other problems causing excessive heating.
Do not operate
RPT-30 until cause of overheating is corrected!!!