General; Controls, Indicators, And Connectors; Operation - Motorola R-2001A Service Manual

4-1. GENERAL

4-2. This section contains information tor the operation of the Communication System Analyzer.
4-3.

CONTROLS, INDICATORS, AND CONNECTORS

4-4. The analyzer controls, indicators, and connectors are shown in Figures 4-1 through 4-3 and listed with
their functions in Table 4-1.
Item
Keyboard
V
<l
0 through 9
• Intensity
• Focus
Dispr/Sweep control
SECTION 4

OPERATION

Table 4-1. Controls, Indicators, and Connectors
Description
FRONT PANEL (fig. 4-1)
Twelve-key pushbutton
keyboard
Line cursor key
Horizontal cursor key
Numerical keys
Stacked concentric
potentiometers
• Intensity - center
(small) knob
• Focus - outside
(large) knob
Potentiometer
Enters variables into memory/enters manual
variables/selects variables to be used from the
memory.
Moves the cursor down to the next line that may
be changed. Preset permanent entries are skipped.
Cursor will move down only. When on last line,
will return to top line with next entry.
Moves the horizontal cursor left to the next entry
position that may be changed. When in the last
left position, the cursor will move to the far right
with the next entry.
Used to select from the memory a stored value
to be used, or to enter directly a value to be used.
Controls the intensity of the scope presentation.
Controls the focus of the scope presentation.
Controls the frequency span (1-10 MHz) displayed
on the CRT when unit is used as a spectrum
analyzer. Provides sweep width control when
either sweep function (SWP 0.01-1 MHz or SWP
1-10 MHz) is selected.
4-1
Function