Keysight Technologies N7020A, User Manual

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Performance Verification
8
N7020A and N7024A Power Rail Probes User’s Guide 87
Performance Test Record
Serial #:
Date:
Tested by:
Recommended Next Test Date:
To verify if the N7022A main cable is damaged
At times, a damaged N7022A main cable may cause the N7024A probe
system to not meet its bandwidth specification even when the N7024A has passed
the bandwidth verification test described in the previous section.
When the N7022A cable is connected to the N7024A probe, the oscilloscope
utilizes a DSP correction filter to adjust the system response and correct the
nominal signal loss from the N7022A main cable. In the case of a damaged main
cable, this loss is more than the correction. Consequently, the probe may not meet
its bandwidth specification when used in combination with such a damaged cable.
In such situations, it is recommended to verify whether or not the N7022A main
cable is damaged using the procedure given below and replace the cable.
Prerequisites
The following are the prerequisites before you start verifying if the N7022A cable is
damaged.
• The N7024A probe should have passed the bandwidth performance verification
test using the procedure given in the previous section.
• The hardware and software setup configured at the completion of the N7024A
bandwidth performance verification procedure should be retained for this
procedure.
Procedure
1 From the hardware setup used in the N7024A bandwidth verification test
( Figure 31 ), disconnect the calibration coax cable from the N7024A probe.
Table 16 Bandwidth Test Results
Test Limits Result Pass/Fail
Less than 3 dB at 6 GHz or below