Performance Verification
6
DP0010A/11A/12A/13A Differential Active Probes User’s Guide
55
To Verify Input Resistance
The following procedure can be used to test and verify that your probe meets its warranted
input resistance specification.
Required Test Equipment
Procedure
1
Make connections as described in the following steps.
a
Connect the DP0020A PV fixture to SMA to BNC adapter. The SMA to BNC
adapter is included in the DP0020A PV kit.
b
Connect the SMA to BNC adapter to the BNC to Banana adapter.
c
Ensure that the other SMA port of the DP0020A PV fixture is open.
d
Connect banana pins of the BNC to Banana adapter to
V
Ω
input
terminal
and
LO
terminal
on the front panel of DMM.
(The GND pin of the BNC to Banana
adapter connects to the LO terminal.)
e
Press the
Ω
2W 4W
button on the front panel of DMM.
Probe
Warranted Specification
DP0010A/11A/12A/13A Input Resistance
1.7 M
Ω
Differential
850 k
Ω
Single-ended
Description
Critical Specification(s)
Recommended Models / Part
Numbers and Adapters
Purpose
Oscilloscope
Infiniium oscilloscope with
AutoProbe I or Infiniium
oscilloscope with an adapter to
AutoProbe I
See
for the complete
list of compatible
oscilloscopes.
To display probe output
DMM
Keysight 34450A
To measure Impedance
Deskew and
Performance
Verification Fixture
DP0020A Kit
To connect the probe to DMM
BNC to Banana
Adapter
Pomona 1270 or equivalent
To connect PV fixture to DMM
