Performance Verification Procedures - Keysight N2894A User Manual

Performance Verification Procedures

The two procedures in this section are used to test and verify the DC attenuation
ratio and the input resistance of the probes. The recommended test interval is once
a year or as required. Use the equipment listed in
dures.
Table 9
Description
Digital Multimeter (DMM)
Calibrator
Ω
BNC(m) to BNC(f) 50
feedthrough termination
Modified deskew and
performance verification kit, 1 M
0.1% precision shunt
resistor is soldered between 50
trace and ground
Oscilloscope
Test DC Attenuation Ratio
1 Set the DMM (Keysight 34401A) to DC voltage measurement mode. Configure
the input resistance to > 10 G
Set the calibrator (Fluke 5700A) to 10V.
2 Connect the N287XA probe tip to the calibrator HI output.
3 Connect the N287XA probe ground lead to the calibrator LO output.
4 For models N2874A and N2876A, connect the probe output to the 50
feedthrough termination (11048C). Connect the output of the 11048C to the
DMM. For all other models, connect the probe output to the modified Keysight
PV fixture 50
precision resistor. Connect the output of the 50
Keysight N2870A-Series and N2894A Passive Probes User's Guide
Required Test Equipment
Minimum Requirements
6.5 digits of resolution, resistance ± 1%
DC Voltage 0 to ±1100 V
Ω
±
Ω
If testing N2870/1/2/3/4A or N2894A: 1 M
input impedance
If testing N2874/6A: 50
Ω
trace input. The trace is terminated with the 1 M
Table 9
Ω
Ω
input impedance
Ω
. Short the tip and perform the "Null" function.
Ω
Performance Verification Procedures
to complete the proce-
Part Number
Keysight 34401A
Fluke 5700A
Keysight 11048C
Keysight E2655B
Keysight 4000-X Series
Ω
± 0.1%
trace to the DMM.
Ω
29