40
Keysight N2818/9A Differential Probes User Guide
Using the Probe
N2819A Performance Verification
The following procedure can be used to test the N2819A probe’s DC
differential gain accuracy and bandwidth, which are warranted
specifications.
Table 13
Required Test Equipment
Scope Vertical Accuracy
1 Configure the oscilloscope to the following settings:
Amplitude Scale (Channel 1):........................................................20 mV/div
Amplitude Scale (Channel 2):......................................................500 mV/div
Time Scale:....................................................................................200 ms/div
Acquisition mode:........................................................................32 averages
Input impedance:.....................................................................................50
Ω.
Trigger:.............................................................................................Channel 2
NOTE
The recommended test interval is 1 year.
Description
Critical Specifications
Recommended Model Part
Number
Functions
Digitizing Oscilloscope
Bandwidth: >1 GHz
1 M
Ω
/50
Ω
selectable input
Keysight MSO9254A
Display probe output
Signal Generator
Precision DC voltage source
Amplitude accuracy: less than or
equal to 0.25%
1 M
Ω
/50
Ω
selectable load
Sine wave greater than or equal to
800 MHz
Fluke 9500B or
Keysight 1EU option
Signal source for DC gain and
bandwidth
Performance Verification (PV)
Fixture
50
Ω
impedance controlled
micro-strip trace
Keysight E2655C
Probing trace for bandwidth test
Terminator
50
Ω
matched load
Termination for the PV fixture
BNC Adapter
BNC (f) to SMA (m)
Interconnection between
calibrator and PV fixture
BNC Adapter
BNC (f) to Dual Banana (m) adapter
Keysight 1251-2277
Termination between probe and
calibrator
