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Item
DISPLAY
select switches
FUNCTION
select switches
Code Synth
Mode select
switches
Code Synth Lvl
control
Ext Level control
Mic connector
Ext Mod In
connector
1 kHz Level control
Table 4-1.
Controls, Indicators, and Connectors (Cont)
Description
Two-pushbutton
switches
Two-pushbutton
switches
Two-pushbutton
switches
Potentiometer
Potentiometer /switch
4-pin connector
BNC connector
Potentiometer/switch
Function
e. A/B indicator
Indicates Tone A/Tone B signaling sequence
will be output. See Tone Memor:1 Table
example. figure 4-9.
f. Tone Remote indicator
Indicates access sequence for Motorola
Repeater will be output.
Tone A and B frequencies are entered from the
keyboard on the Tone Memory Display.
Selects the function to be displayed by the
equipment. as indicated by the DISPLAY LEOs.
a. 6 - moves the selection up one step at a
time
b.
\7 -
moves the selection down one step at
a time
Selects the type or mode of signal the equip-
ment will generate or monitor as indicated by
the FUNCTION LEOs. Operation is the same as
for the DISPLAY select switches.
Selects the Code Synthesizer output mode as
indicated by the CODE SYNTH MODE LEOs.
Operation is the same as for the DISPLAY
select switches.
Controls the level of Code Synthesizer for
modulation or MOD Output.
Controls modulation level of external input
(microphone and other external generators).
Switch at full counterclockwise position disables
external modulation inputs.
Microphone input. Provides microphone bias
and PUSH TO TALK (GENERATE) connection
to equipment.
4-8
External modulation signal input.
Internal 1 kHz tone modulation level control.
Switch at full counterclockwise position disables
1 kHz modulation tone.
Table 4-1.
Controls, Indicators, and Connectors (Cant)
Item
Description
Function
-------------1~----------~---------------------------
FUNCTION switch
Three-position toggle
switch
4-5
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 eioht sequences available.
g. Freq Counter- The frequency of the signal
input to the front panel frequency cotmter
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 kevboard.
j. IF -The 455 kHz IF signal from the monitor
receiver is displaved.
.
k. Scope AC -The voltage waveform applied
to the front panel vertical input is displayed.
The vertical input is AC coupled.
1. 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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