Nautel NX300, Installation Manual

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NX300 Installation Manual Commissioning tasks
Page 10-4 Issue 3.0 2012-11-01
7. Turn off the RF power stage: press
RF Off
. The
RF Off
button will turn red and the
Rf On
button will turn grey.
8. Disconnect the audio signal generator from J11 or J12 on the control/interface PWB.
Going on-air
Important:
Before going on the air, if you want the safety interlocks to operate properly, the shorting
jumpers installed in “Turning on the transmitter” on page 10-2 , Step 8 should be removed.
When the commissioning tests are successfully completed, connect the studio audio to the
transmitter's audio input connector, connect the RF output to its antenna system, and complete any
emission tests that are required.
1. Turn off the power using the ac disconnect switch, if one is being used, or else at the ac
source.
2. Connect the transmitter's RF output to an antenna system (or verify that the current
connection is intact). Ensure that a ferrite toroid (Nautel Part # LX63) is installed on the RF
coaxial hardline at the transmitter’s output.
3. Turn the transmitter’s ac power back on.
4. Use the AUI controls to begin transmitter operations. For detailed instructions, refer to the
NX300 Operating and Maintenance Guide.
WARNING:
If a jumper is placed between interlock inputs J6-1/J6-2 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 and the antenna system if the
transmitter is turned on.