Duplexer Installation - Vertex Standard VXR-7000 Service Manual

Operating Manual Reprint

Duplexer Installation

Important Note
Be certain to observe the specifications for Frequen-
cy Separation and Maximum Transmitter Power
of the duplexer connected to the VXR-7000. The
Frequency Separation should be 5 MHz (min.) to
10 MHz (max.), and the Maximum TX Power Rat-
ing should be at least 40 Watts.
If the VXR-7000 TX output power or frequency
specification is out of the range of the duplexer's
capability, you may re-program the Tx/Rx frequen-
cy pair and/or reduce the TX output power of the
VXR-7000, so as to allow temporary operation of
the VXR-7000 until a duplexer of proper ratings
can be obtained.
Please consult with your Authorized Vertex Deal-
er for assistance with procurement of a suitable
duplexer.
12
1. Connect the VXR-7000's TX antenna port to a watt-
meter and dummy load (the duplexer must not be con-
nected at this point). Connect any Vertex Standard
microphone to the MIC jack, and place the BASE/
REPEATER switch in the "BASE" position. Select
Channel 1 for alignment purposes.
2. Press and hold in the ACCESSORY switch for two
seconds to enter the adjustment mode. The channel
number will begin to blink.
3. Press and hold in the PTT key on the microphone.
The display will indicate "Po" while transmitting. Ob-
serve the power output as indicated on the watmeter.
4. Press the (UP: increment) or
ment) button (to the right of the channel display) re-
peatedly to adjust the TX output power to 40 Watts
(or less) while holding in the PTT key.
5. Once the desired power level has been obtained, re-
lease the PTT key. Now press and hold in the AC-
CESSORY button for at least two seconds to save
the new setting and exit to the normal operation.
6. Repeat steps 2. through 5. (above) for any other chan-
nels (2 through 16) if they are to be used.
7. Re-test each channel in the normal operating mode to
confirm the proper power output. You may now dis-
connect all test equipment.
8. The duplexer may now be installed.
The above procedure should only be performed by your
Authorized Vertex Standard Dealer or a qualified radio
technician, in order to ensure accurate calibration. Please
consult with your Authorized Vertex Standard Dealer for
assistance with procurement of a suitable duplexer.
(DOWN: decre-