Nautel V10, Руководство пользователя по установке и эксплуатации

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V10/V7.5/V5/V3.5 Installation and Operation Manual
Page 3-1
Section 3 Operating Instructions Issue 3.5
V10/V7.5/V5/V3.5
INSTALLATION AND OPERATION MANUAL
Section 3 OPERATING INSTRUCTIONS
3.1 INTRODUCTION
The following instructions are intended
primarily for persons involved in testing or
maintenance of the equipment.
3.1.1 Precautions
The transmitter contains many solid state
devices that can be damaged if they are
subjected to excessive heat or high voltage
transients. Ensure the circuits are not
overdriven and are not disconnected from
their loads while turned on.
3.2 EMERGENCY SHUTDOWN
If an emergency shutdown is necessary,
special precautions are required. However,
the type of shutdown is dictated by the
reason for the shutdown. There are two
types of shutdown. The first turns off the RF
output and disables all of the internal power
supplies by disconnecting the ac power
source. The second turns off the RF output
by inhibiting the power output stages.
3.2.1 Complete Shutdown
When the cause of the emergency shutdown
dictates the need for a complete shutdown of
the transmitter, do the following:
•
Switch off the ac power source at the ac
power entrance.
3.2.2 Turn Off RF Output
When the cause of the emergency shutdown
is external to the transmitter or is in the RF
output portion of the transmitter, the following
will turn off the RF power produced by the
power modules:
WARNING
The following will not remove the ac
power source voltage from the
transmitter or inhibit any of the internal
low voltage dc supplies. If the reason for
the shutdown requires all voltages be
turned off, proceed directly to paragraph
3.2.1
•
If in local or remote control, press the
Control - RF Off switch on the
transmitter’s front panel.
•
If in remote control, select RF Off at the
remote control site.
•
Open any external interlock switch.
3.3 EXTERNAL SAFETY INTERLOCK
The external electrical interlock circuit is a
protection circuit controlled by user
determined, serially connected, normally
open/held closed interlock switches. It inhibits
the RF output when it is not safe to produce
RF output.
When all of the external interlock switches are
closed and it is safe to produce an RF output,
the front panel's system diagram
External
Alarm lamp will be off. The operator will have
full control of transmitter functions.
When any external interlock switch is open,
the RF output stages will automatically turn
off. The front panel's system diagram
External Alarm lamp will turn on (alarm
state). It is not possible to enable the RF
power stages until all of the external interlock
switches are closed.