Nautel NV30LT-N, Operation & Maintenance Manual

Page: 28 / 226

NV30LT-N OPERATIONS & MAINTENANCE MANUAL OPERATING THE TRANSMITTER
PAGE 3.2.10 VERSION 0.1 2015-03-01
LEDs
There are four LEDs on the left-hand side of the LCD display that provide the operational status of
various sections of the transmitter -
Exciter
,
Power Amplifier
,
Output Network
and
Power
Supply
(see Figure 3.2.5 on page 3.2.9 ). The LEDs can glow green, amber or red. Typically, green
indicates normal operation, amber indicates a warning, and red indicates a fault or error. Refer to the
Troubleshooting section for more detailed information on LED status.
Front Panel Pushbuttons
The front panel contains three pushbutton switches that provide local control of the transmitter’s RF on/
off status and the local/remote operational control status (see
Figure 3.2.6 ).
Figure 3.2.6: Front Panel Pushbutton Switches

RF On
- In local mode, press the pushbutton switch to turn on the RF power stage and cooling
fans. The
RF On
LED will be on (amber) when the RF power stage is on and the external
interlock circuit is intact. The transmitter will operate at the level stored in the selected preset.

RF Off
- Regardless of the remote enable/disable status, press the pushbutton switch to turn
off the RF power stage. The
RF Off
LED will be on (amber) when the RF power stage is off.
NOTE
: The
RF On
and
RF Off
LEDs may blink if there are alarms occurring that prevent the
transmitter from enabling the RF power stage (e.g., interlock open, combiner matching, etc.)

Local/Remote
- Press the switch to toggle between “remote enabled” (
Remote
amber LED
on; local and remote control) and “remote disabled” (
Remote
LED off; local control only). The
transmitter’s local controls are always enabled. In
Local
mode (Local amber LED on), the
front panel switches and UI control transmitter operation and all of the remote controls
(except the external interlock) are disabled. In
Remote
mode, control of transmitter functions
is also provided to the remote (web-accessed) AUI or remote input/output control via the rear
of the controller module or the optional remote interface PWB. The bottom of the remote AUI
home page will display the control status. When remote control is enabled, both the
Local
and
Remote
buttons are green. When remote control is disabled, only the
Local
button is green.
RF On RF Off
Local Remote
Status LEDs
Switches