Nautel NX10, Installation Manual

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NX10 INSTALLATION MANUAL COMMISSIONING TASKS
VERSION 2.0 2016-05-06 PAGE 2.8.1
SECTION 2.8: COMMISSIONING TASKS
The transmitter contains solid-state devices that may be damaged if subjected to excessive heat or
high-voltage transients. Ensure that circuits are not overdriven or disconnected from their loads while
turned on.
The transmitter was precisely calibrated and tested during manufacturing. Do not change any
adjustments other than those specified
Pre-Commissioning Tasks
1. Terminate the transmitter's RF output into a precision, 50

, resistive test load that is able to
dissipate the RF power being applied to it: 15 kW total required.
2. Verify that all panels are installed, and ensure that their attaching hardware is firmly tightened.
3. Connect the test load’s interlock or, if necessary, simulate the closing of all external interlocks. This
requires a short circuit between pins J6A-19 and J6A-20 of the control/interface PWB’s REMOTE I/O
connector (J6A).
NOTE
: An interlock jumper (Nautel Part # 212-5061) is provided in the NX10’s ancillary kit. It is
intended to plug directly into the REMOTE I/O-A (J6A) connector (pins 19 and 20), on the control/
interface PWB (A4). 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).
4. In lieu of normal station programming, connect an analog audio signal generator, preset to
1000 Hz at a zero output level (turned off), to XLR connector J9 on the control/interface PWB, or an
AES signal generator to XLR connector J7 on the control/interface PWB.
WARNING! BEFORE APPLYING AC POWER AND TURNING ON THE
TRANSMITTER, YOU MUST CUSTOMIZE SOME CIRCUITS TO THE STATION'S
POWER SOURCE AND OPERATING REQUIREMENTS. DO NOT PERFORM THIS
PRE-COMMISSIONING UNLESS YOU ARE A STATION ENGINEER OR A
COMPETENT ELECTRONICS TECHNICIAN.
WARNING! If a jumper is placed between interlock pins J6A-19 and J6A-20
on the control/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 if the transmitter is turned on.