Appendix B: Performance Verification
P7350 5 GHz Differential Probe Instruction Manual
37
3.
Record the output voltage (on the second DMM) as V
out
1.
4.
Disconnect and reverse the red and black leads from the probe to
the power supplies. Record the actual voltage as V
in
2.
5.
Record the output voltage (on the second DMM) as V
out
2.
6.
Calculate the gain as follows: (V
out
1 -- V
out
2)
÷
(V
in
1 -- V
in
2).
7.
Verify that the gain is 0.16,
±
2%.
8.
Record the calculated gain on the test record.
Rise Time
This procedure verifies that the probe meets rise time specifications.
Two rise times are measured; the test system, and the test system
with the probe included. The probe rise time is calculated using the
two measurements.
1.
Connect the test equipment as shown in Figure 23 on page 38.
CAUTION.
Use care when working with SMA connectors: support
equipment to avoid mechanical strain on the connectors, and use a
torque wrench to tighten connections to 7 in-lbs.
