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8
P6131 Instruction Manual
Table 5: Performance verification and adjustment test equipment (cont.)
Description Example productMinimum requirements
Termination 50 W BNC Tektronix 011-0049-XX
Low-reactance alignment tool 2 inch shaft, .050 inch bit size Tektronix 003-0675-XX
2
To confirm the full bandwidth specification of the P6131 probe, use the following equipment: a Tektronix 2465 oscillo-
scope or 7904 oscilloscope with 7B92A time base and 7A42 vertical amplifier and a leveled sine wave generator capable
of 300 MHz output. If you use the probe with a Tektronix 2445 oscilloscope, the bandwidth specification is lower; see
Table 1 on page 3.
3
The maximum sensitivity of the 7A42 plug-in is 20 mV/division. When using the 7A42 to check P6131 probes, double the
amplitude settings in the procedures to follow.
NOTE. To ensure accurate measurements, warm up all test equipment for at least
20 minutes before beginning any performance verification or adjustment
procedure.
To check probe bandwidth do the following:
1. Connect the test setup as shown in Figure 5.
Leveled sine wave
generator
50 W Termination
Subminiature
probe-tip-to-BNC
adapter
Vertical input
P6131
probe head
Compensation
box
Test oscilloscope
Output
Figure 5: Bandwidth check setup
2. Set the test oscilloscope controls as follows:
Volts/Division 0.1 V (includes 10X probe attenuation)
Time/Division 1 ms
Input Coupling DC
Bandwidth Full
3. Set the leveled sine wave generator to 50 kHz.
Bandwidth Check