Table 4-1. Controls, Indicators, and Connectors (Cont)
Item
Type N connector
Potentiometer
14-position ganged
atten and switch
-
Ext Wattmeter
Freq Set controls
• Coarse
• Fine
Frequency offset
control (0-10 MHz/Off
/45 MHz)
Output connector
SIDE PANEL (fig. 4-2)
Frequency Standard
control
REAR PANEL (fig. 4-3)
BATT 5A
DC8A
Description
RF In/out connector
RF Level Variable
control
RF Level Step
switch
Connector
Stacked concentric
potentiometers
Inside (small) control
knob
Outside (large) control
knob
Three-position switch
BNC connector
Potentiometer
Line fuseholder (5 amp)
Line fuseholder (8 amp)
Function
RF input in the power monitor or monitor
mode, RF output in the generate mode.
Vernier control of RF output level. Exceeding
the AM limit marking in AM generation mode
may result in a distorted output.
Ten dB per step control of RF output level
in generate mode. Also serves as RF input
level step attenuator in monitor and spectrum
analyzer modes.
Allows input from Motorola ST-1200 series in-
line wattmeter elements for measurement and
CRT display of forward and reflected trans-
mitted power.
Controls the duplex generator output frequency
in the Duplex Generation mode.
Coarse frequency control.
Fine frequency control.
Selects the offset of the transmitted frequency
from the selected receive frequency (Image/
Dpix switch determines side of selected
frequency the offset will be). 0-10 MHz position
allows frequency offset to be varied between
0-10 MHz. In the 45 MHz position the offset
Is variable over a small range around 45 MHz
with the use of the Fine frequency control.
Output connector for duplex generator output.
Allows calibration of the time base frequency
(freq std)
Battery charger output line fuseholder.
DC Input line fuseholder
4-11
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