Section 3 - OPERATION
3-1. INTRODUCTION.
This section describes operation of the front panel controls. There are three operator switches,
the LCD display and an alarm indicator. All functions for the equipment are controlled by these
components. The functions are:
1.Turn the channel "on" or "off".
2.Set the frequency of the channel.
3.Select the "wide" or "narrow" deviation mode.
4.Setup these parameters for the remotely activated configuration.
Alarm indications appear on the LCD display but are not controlled by the operator.
Both hardware and software have been designed to make reprogramming as "tamper proof"
as possible. The Program/Execute switch is recessed so it will not inadvertently be operated. All
program changes must start with the operation of the Program/Execute switch and must
also end with the operation of the Program/Execute switch. If this sequence is not followed,
none of the changes will take effect. If programming is initiated and no operator action takes
place for approximately 12 seconds (before the final press of the Program/Execute switch) the
display will revert to its previous status and you will need to start over.
3-2. APPLYING POWER.
NOTE:The last status of a unit is retained even when power is removed. When power is
restored, the unit will return to it's previous settings.
When power is first applied, the LCD display goes through four steps.
1.The LCD goes black to show all segments are functioning.
2.The display will show the unit model number.
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_455 Transmitter _ or _455 Receiver _
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455 Operation Manual
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6/23/98
