Manual Operating Procedure; Power Push On/Off Switch (S1); General Purpose Keypad - Watkins-Johnson Company WJ-8718A/MFP Instruction Supplement

WJ-8718A/MFP
2.4.4 MANUAL OPERATING PROCEDURE
FIGURE 2-1
Local control of the receiver is accomplished through momentary-contact push-
button switches arranged in functional blocks on the WJ-8718A/MFP Option panel, illustrated in
Figure 2-1 and described in paragraphs 2.4.4.1 through 2.4.4.10. Optional remote operation of
the receiver is described in paragraph 2.4.5.
2.4.4.1
POWER PUSH ON/OFF Switch (SI)
The POWER switch is pressed alternately to ener.gize and de-energize the receiver.
In the ON position, the button is depressed and has the appearance of illumination due to a
brightly colored mechanical insert visible through the transparent switch cover. In the OFF
position, the button assumes the out position and the colored insert is retracted.
Before energizing the receiver, the rear panel voltage-select PC wafer should be
examined as described in the WJ-8718A HF Receiver Instruction Manual.
[0]
'0'"
,.USH
ON/a,.,
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o
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2.4.4.2
Figure 2-1. Microprocessor Front Panel
General Purpose Keypad
The general purpose keypad is the 16-button switch block located to the left of the
tuning wheel. The multi-function, numerical selection buttons labeled 0 through 9 are utilized
to enter RF and BFO frequencies, signal threshold level, BFO offset, dwell time, and memory
address. A special function key
(*)
is used to place the receiver in the BITE mode, and to clear
the numbered memory channels.
2-5