Nautel NV15LT, Installation Manual

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NV20LT/NV15LT INSTALLATION MANUAL COMMISSIONING
PAGE 2.9.2 VERSION 4.0 2018-02-26
Pre-Commissioning Tasks
1. Terminate the transmitter's RF output into a precision, 50

, resistive dummy load that is
adequately rated for the maximum expected total power output.
2. Verify that all panels are installed, and that their attaching hardware is firmly tightened.
3. Verify all program inputs are connected to the back of the controller and optional exciter.
4. Close the external interlock (if installed). If an external interlock is not installed, simulate the
closing of the external interlocks by applying a short circuit between TB1-1 and TB1-2 of the
optional remote interface PWB (A16), if installed. If the remote interface PWB is not installed,
apply a short circuit between pins 19 and 20 of the
REMOTE I/O-A (A1J2A) connector on the rear
of the controller (A4).
NOTE
: An interlock jumper (Nautel Part # 211-5060) is provided in the NV20LT/NV15LT’s ancillary kit. It
is intended to plug directly into the REMOTE I/O-A (A1J2A) connector (pins 19 and 20), on the rear of
the controller module (A4) or into the INTLK inputs (TB1-1 and 2), on the optional remote interface
PWB (A16), if installed. This jumper cannot be used if you are using a D-sub connector to make other
remote I/O connections. Instead, you must solder a jumper between pins 19 and 20 of the mating
connector (Nautel Part # JS28, also provided in the ancillary kit).
5. Set the switch on the front of each RF power module to its ENABLE position.
WARNING! If a jumper is placed between the INTLK inputs [pins 19 and 20
of the controller’s REMOTE I/O-A connector (A1J2A) or TB1-1 and 2 on the
optional remote interface PWB], safety features controlled by the external
interlocks will be disabled. A fail-safe method of alerting personnel to this
fact should be implemented. Voltages which are dangerous to life will be
present on the RF output stages and the antenna system if the transmitter
is turned on.