Sweep Time Accuracy - HP 8340B Manual

4-3. SWEEP TIME ACCURACY

Specification
Range: 10 milliseconds to 200 seconds forward sweep times.
50/o (sweeptimes =50 seconds)
Accuracy: ±
Description
The HP 8340B/41 B 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 DUT 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.
Equipment
Universal Counter
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 [INSTRPRESET] [START FREG] [3] [GHz][STOPFREQ] [7] [GHz][POWER
LEVEL] [0] [dBm].
HP 8340B/41B
Table 4-5. Sweep Time Accuracy Specifications
HP 8340B/41B
UNDER TEST
STOP SWEEP
I N/OUT
Figure 4-3. Sweep Time Accuracy Test Setup
tiN I VERSAL
COUNTER
INPUT A
HP 5316A
Performance Tests 4-19