Keysight InfiniiMax III+ Series, User Manual

Page: 147 / 162

Performance Verification for N7000-Series Probes
8
InfiniiMax III+ Series Probes User’s Guide 147
DC Input Resistance Performance Verification
Equipment Needed
• InfiniiMax III+ N2836A solder-in probe head. An N5441A solder-in probe head
may be substituted.
• Keysight N5443A Performance Verification Fixture. No substitute.
• BNC(m) to SMA(m) Adapter. Pomona 4288 or equivalent.
• Banana Plug to BNC(f). Pomona 1269 or equivalent.
• Digital Multimeter:
• Keysight 33401A or equivalent
• Critical specification: 2 wire resistance accuracy
• Power Supply for Probe
• DSO/DSA 90000 X-series oscilloscope or 1134A power supply with N5477A
Autoprobe adapter (see the “Bandwidth Performance Verification" on
page 138 procedure)
• No substitute
• Probe Positioner
• Keysight N2787A 3D Probe Positioner
• Critical specification: stable/accurate positioning
• Small Bench Vise
Measuring Input Resistance of N2836A Probe Head
Figure 107 shows the correct setup for measuring the differential input resistance
for the solder-in probe head.
1
Connect the BNC to SMA adapter and BNC to Banana Plug adapters as shown
in Figure 107 on page 148.
2
Position the PV fixture on a table top and clamp it with a small bench vise to
steady it. Ensure that the PV fixture is flush with the table top so that when the
banana plugs are probed, it does not rock the PV fixture.
NOTE
The recommended test interval is one year/2000 hours.
NOTE
You only need to perform the performance verification test on one of these probe heads, not
both of them. If it passes for one of them, then it will pass for all of them.