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INSTALLATION AND OPERATION
WJ-8718A/MFP
and the parameters transferred to the receiver.
When an active channel is located (signal
strength equal to or greater than threshold level) the scan locks at the active channel for the
established dwell time and restarts automatically. If a dwell time of 9 is entered, the scan
stops until restarted by pressing AUTO SCAN.
2.4.4.7.6
Hand Off Operation
The· HAND OFF switch is utilized during Master/Slave hand off operations.
Master/Slave operation is possible only with receivers
that
are
equipped
with
the
WJ-8718A/232M or WJ-8718A/488M Remote Control I/O Option.
In such cases, a master
receiver can hand off front panel data to a number of slave receivers of the same type.
In
order to hand off front panel data from the master to the slaves, the master receiver must first
be in master mode. This is accomplished by entering 25* on the front panel keypad. Once the
receiver is in master mode, its front panel parameters may be transferred to the slave receivers
by depressing the master's front panel HAND OFF switch. The HAND OFF LED indicator light
should light momentarily, indicating that the hand off has been accomplished.
If
the indicator
light remains on, the hand off has not taken place. Entering 26* turns off the Hand Off Special
Mode.
2.4.4.8
LINE AUDIO/SIGNAL STR Meter
The LINE AUDIO/SIGNAL STR meter has two scales. One scale displays the signal
strength from 0 to 110 dB. A MAN SET mark on the scale indicates the proper signal strength
for use in the manual gain mode. The second scale indicates the line audio level above 1 mV,
referenced to 600 ohms. Meter function is determined by selection of one of the two meter
switches.
2.4.4.8.1
LINE AUDIO Meter Switch
When the LINE AUDIO switch is engaged, the meter indicates the line audio level.
The line audio (AUDIO I) level is adjusted with the LINE AUDIO LEVEL potentiometer (R1)
located on the rear panel.
2.4.4.8.2
SIGNAL STR Meter Switch
When the SLOW or FAST GAIN MODE switches (see paragraph 2.4.4.6.3) are
engaged, the meter provides a logarithmic indication of signal strength. When the MGC switch
is engaged, the meter provides a near-linear indication of receiver AM detector voltage. The
RF GAIN potentiometer on the receiver front panel can then be used to control signal strength
(see paragraph 2.4.4.6.4).
2.4.4.9
PHONES Jack
The audio signals from the receiver can be monitored at the PHONES jack on the
front panel. The PHONES jack is designed to drive a 600 ohm stereo headphone set.
When
operating in the ISB mode, both USB and LSB audio can be monitored simultaneously: the USB
2-12
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