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FUNCTION switch
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Table 4-1.
Controls, Indicators, and Connectors (Cont)
Description
Three-position toggle
switch
4-5
Function
d. Duplex Gen- The duplex generate and
monitor frequencies are displayed. The
depth of modulation on the generator output
or on the received carrier is indicated for the
generate and monitor modes respectively.
For this display, the function switch only
selects which modulation reading is dis-
played.
e. RF Memory - The nine stored RF frequen-
cies or DPL codes with their corresponding
PL and the current frequency in use are dis-
played.
f. Tone Memory- The user selectable param-
eters for the code synthesizer are displayed.
These include the tone A and B frequencies,
the signaling sequence, and the programming
for each of the eiaht seauences available.
g. Freq Counter- The frequency of the signal
input to the front panel frequency counter
jack is displayed.
h. DVM - The AC or DC level of the signal at
the front panel DVM jack is displayed. The
AC or DC mode is selected with the display
cursor and the keyboard. The battery voltage
is also displayed.
i. Ext Wattmeter - The external wattmeter
element selected and the forward and re-
flected power being passed thru that element
are displayed. The element select is changed
by entering the appropriate range number
with the keyboard.
j. IF
The 455 kHz IF signal from the monitor
receiver is displayed.
k. Scope AC
The voltage waveform applied
to the front panel vertical input is displayed.
The vertical input is AC coupled.
I.
Scope DC- The voltage waveform applied
to the front panel vertical input is displayed.
The vertical input is DC coupled.
Controls the function of the equipment. The mode
is shown by the LEOs.
a. Gen- equipment generates and outputs an
RF signal.
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