Nautel NV5, Troubleshooting Manual

Page: 39 / 228

NV5/NV3.5 Troubleshooting Manual Responding to alarms
Issue 3.2 2014-12-10 Page 1-31
Using the RF power module extension test jig
The RF power module extension test jig (Nautel Part # 206-5350) is an option available from Nautel
that allows convenient troubleshooting access to an RF power module while it is still electrically
connected to the transmitter.
The test jig consists of three parts:
– NAX249 NV Extension Module
– 206-5330 NV Module Extension Support
– 206-5355 Module Cover Runner
1. Remove or verify an RF power module has been removed to allow insertion of the test jig
(see “Removing an RF power module” on page 1-29 ). See above NOTE for restrictions.
2. Obtain the NV extension module (Nautel Part # NAX249). Carefully push the NV
extension module into the vacant module position so that its card-edge connector mates
with the transmitter.
Note that the end of the extension module that has protruding 7/16”
DIN and card-edge connectors is the end that inserts into the transmitter.
3. Install two M5 securing screws in the NV extension module’s front panel.
WARNING:
Dangerous RF and dc voltages are exposed when an RF power
module’s cover is removed. Use extreme caution when
troubleshooting an RF power module. Nautel highly recommends
that you contact a customer service representative before attempting
to troubleshoot an RF power module.
NOTE:
The test jig must be inserted into a vacant RF power module position. If necessary, remove an
RF power module as detailed in
“Removing an RF power module” on page 1-29 . Due to its
physical design, the test jig can not be mounted in certain cabinet-edge module positions. For the
NV5/NV3.5 transmitter, the test jig can not be used in module position 1. Nautel
recommends using the test jig in module position 2. Swap RF power modules, as necessary, to
move the suspect module to position 2.