Sweep Time Accuracy Test (220 Ms); Sweep Time Accuracy Test Setup - HP 8568B Performance Tests And Adjustments Manual

3. Sweep Time Accuracy Test (220 ms)

3. Sweep Time
Accuracy Test (220
Related Adjustment
Frequency Control Adjustments
Specification
Description Preferred Procedure
This test is for sweep times 220 ms. For faster sweep times, refer to
Fast Sweep Time Accuracy Test (Test 19).
A universal counter is connected to the PENLIFT RECORDER
the
OUTPUT (on rear panel) of the spectrum analyzer. The counter is
used in time interval mode to determine the "pen down" (sweep time)
interval of the PENLIFT RECORDER OUTPUT. The penlift output
voltage level corresponds directly to the sweeping of the analyzer
the
(pen down = OV) and not-sweeping of analyzer (pen up = 15V). A
DVM is used to set the appropriate trigger level for the counter.
Alternate Procedure
the
Perform this procedure if the equipment for preferred procedure
is unavailable.
Sweep time accuracy for sweep times 220 ms can also be measured
using the HP 8568B's internal frequency counter for a time interval
measurement.
SPECTRUM ANALYZER
UNIVERSAL
COUNTER
DIGITAL VOLTMETER
Figure 2-4. Sweep Time Accuracy Test Setup
Performance Tests 2-9