Sweep Time Accuracy - HP 8340B Manual

4-3.
SWEEP TIME ACCURACY
Specification
Table 4-5.
Sweep Time Accuracy Specifications
Range:
10
milliseconds to 200 seconds forward sweep times.
Accuracy:
±
5% (sweeptimes
£50
seconds)
Description
The HP 8340B/41B
is swept from
3
GHz
to
7
GHz
at
5 different sweep times, ranging from 10 ms
to
50
sec.
The
rear panel
STOP SWEEP IN/OUT
signal
of the
OUT
is
used
to
trigger
INPUT
A
and
B
on an
HP 5316A Universal Counter used
in
the time interval mode. At the start of
a
sweep, the STOP SWEEP
IN/OUT
signal
changes from
TTL
low to
TTL
high.
This pulse triggers INPUT
A on the Universal
Counter (selected for leading edge
triggering) and the
count begins. At the end of
a sweep,
the
STOP
SWEEP IN/OUT
signal
changes from
TTL high to TTL
low. At this point,
INPUT B
is triggered (selected
for trailing edge triggering) and the count
is complete. After the Universal Counter has made several
counts, an accurate reading of the DUT
sweep
time is indicated on its
display.
UNIVERSAL
COUNTER
HP 8340B/41B
UNDER TEST
^
STOP SWEEP
IN/OUT
J
INPUT
Figure 4-3. Sweep Time Accuracy Test Setup
Equipment
Universal
Counter
.........................................
HP 5316A
Procedure
1.
Connect equipment
as
shown
in
Figure 4-3. Switch the HP
8340B/41B POWER
to ON. Allow the
equipment to warm up for
one hour.
2.
On the
DUT, press [INSTR PRESET] [START FREQ] [3] [GHz] [STOP FREQ] [7] [GHz] [POWER
LEVEL] [0] [dBm]
HP 8340B/41B
Performance Tests 4-19