Model 3585A
Operation Overview
After completing a measurement with a narrow Frequency Span, it is sometimes desirable to
return to a full 0 Hz to 40 MHz Span to locate the next signal to be measured without preset-
ting the entire instrument. This can be done by pressing
F"ULL .
SWEEP
. The FULL SWEEP func-
tion does nothing but set the Center Frequency to 20 MHz and the Frequency Span to 40
MHz. It does not change the Marker position, erase Offsets, activate or deactivate any
COUPLED
front-panel functions or change the values of the operating parameters. (With
[f]
ac-
tivated, the RBW, VBW and Sweep Time parameters are coupled to Frequency Span and
may, therefore, change when
[,)'fELp
is pressed. The change in Center Frequency and/or
Resolution Bandwidth caused by pressing
[,)'ELfp
initiates an Automatic Calibration.)
THE BEEPER
The 3585A communicates with the operator via alphanumeric messages that appear on the
CRT screen. To call the operator's attention to these messages, it is equipped with an audi
ble alerting device, called the "beeper", which produces a gentle (yet penetrating) high
pitched "beep" tone. The beeper sounds a single "beep" whenever a message of importance
initially appears on the screen; and "beeps" again whenever the condition that produces the
message is repeated. The beeper also sounds whenever an error is detected in the internal test
routine that is performed during the turn-on sequence and each time the instrument is
preset.
The beeper is automatically enabled by
��g�
. It can be disabled by entering
,'
:,";
,
5
;
and reenabled by entering
.
l o n l '
5
3-7
Summary of Contents for 3585A
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