Appendix C: Operator Performance Check
4) Attach a precision 50 Ω terminator to the CT100.
5) The difference in Ohms between the two cursors is a measure of the deviation of output
impedance from 50 Ohms.
Pulse Amplitude Check
Pulse Amplitude Check
Pulse amplitude measurement should be taken with a device that can accurately measure
frequency, pulse width, period, and amplitude.
Connect one end of the 36-inch calibration cable to a capable pulse measurement device and the
other end of the 36-inch calibration cable to the CT100 front panel cable connector. A waveform
should appear on the device display. Switch the CT100 into the short pulse setting from the Main
menu. Measure the pulse amplitude coming off the front panel cable connector. The pulse
amplitude into 50 Ωs should be between 290mv and 300mv.
Repeat pulse amplitude comparison for medium and long pulse settings.
Pulse Width Check
Pulse Width Check
Pulse width measurement should be taken with a device that can accurately measure frequency,
pulse width, period, and amplitude.
Connect one end of the 36-inch calibration cable to a capable pulse measurement device and the
other end of the 36-inch calibration cable to the CT100 front panel cable connector. A waveform
should appear on the device display. Switch the CT100 into the short pulse setting from the Main
menu. Measure the pulse width coming off the front panel cable connector. The pulse width
should be between 1 and 100 µsec.
Repeat pulse width comparison for medium and long pulse settings.
Pulse Repetition Rate Check
Pulse Repetition Rate Check
Pulse repetition rate measurement should be taken with a device that can accurately measure
frequency, pulse width, period, and amplitude.
Connect one end of the 36-inch calibration cable to a capable pulse measurement device and the
other end of the 36-inch calibration cable to the CT100 front panel cable connector. A waveform
should appear on the device display. Switch the CT100 into the short pulse setting from the Main
menu. Measure the pulse repetition rate coming off the front panel cable connector. The pulse
repetition rate should be between 4 and 125 µsec.
Repeat pulse repetition rate comparison for medium and long pulse settings.
74 Mohr CT100 / CT100HF Operator's Manual
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