To Test Dc Gain Accuracy - Agilent Technologies 54701A User's And Service Manual

To test dc gain accuracy

This test checks the dc gain accuracy of the probe.
Specification: 0.1 0.5%
Equipment Required
Equipment
Power Supply
Digital Multimeter
Power Supply
Adapter
Termination
Adapter
1 Set the power supply for 5.0 V 0.05% (2.50 mV)
Use the DVM to measure the voltage if necessary.
2 Connect the power connector of the active probe to the 1143A Probe
Offset Control and Power Module or an oscilloscope with an
appropriate probe power output.
3 Connect the output of the probe to the input of the DVM using the N-
to-BNC adapter, 50-Ω feedthrough, and BNC-to-banana adapter.
4 Set the probe offset to zero.
If using the 1143A power module, set the Offset controls to Local and Zero.
If using an oscilloscope for probe power, use the channel menu to set the
offset to 0.0 V.
5 Short the input pin of the probe to the shield at the probe tip.
You can use the 11880A (see "To test bandwidth" on page 45.) which is an
Type N-to-probe tip adapter with an internal 50-Ω termination. The objective
is to effectively short the probe input without inducing any signal. Another
method can be used if it meets that requirement.
Critical Specification
5 Vdc
Better than 0.1% accuracy
Power and control for probe under test
N(f)-to-BNC(m)
50 Ω, BNC feed-through
BNC (f) to banana (m)
Chapter 3: Service
Calibration Testing Procedures
Recommended
Model/Part
6114A
3458A
1143A
1250-0077
10100C
1251-2277
43