Nautel XR3, Руководство по установке

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XR6/XR3 Installation Manual Commissioning tasks
Issue 3.1 2014-06-04 Page 11-3
Commissioning
Turning on the transmitter
1. Terminate the transmitter's RF output into a precision, 50
Ω
, resistive dummy load that is
able to dissipate the RF power being applied to it: 6 kW carrier, 9 kW total required (XR6) or
3 kW carrier, 4.5 kW total required (XR3).
2. Install all panels and firmly tighten their securing hardware.
3. Simulate the closing of all external interlocks. This requires a short circuit between TB1-1
and TB1-2 of the remote interface PWB. Ensure all networks connected to the transmitter’s
RF output are properly covered.
4. Connect an audio signal generator, preset to 1000 Hz at a zero output level (turned off),
between TB2-1 (+) and TB2-3 (-) of the remote interface PWB.
5. Switch on the ac power at the service entrance to turn on the transmitter.
6. Look through the window on the left side of the transmitter’s lower rear panel (as seen from
the back). Verify that both power status LEDs are on.
7. Check the alarm and status indicators (the front panel and GUI). See the XR6/XR3
Operating and Maintenance Guide .
8. Check the output of the B+ power supply on the GUI. The voltage should be between 320
and 340 V dc.
9. Check the output of the 5, 15, and 24 V power supplies on the GUI.
10. Select
Local
control.
11. Set the active preset’s power to zero by pressing
Increase
and
Decrease
simultaneously.
WARNING:
If a jumper is placed between interlock inputs TB1-1/TB1-2 on the 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.