HP 54520 Series - Page 201

Utility Menu
Attenuation Menu
Channel Impedance Softkey
The channel impedance softkey key allows you to select the impedance
of the probe connected to the channel input. Use the 50-Q selection for
active probes that have a high input impedance, and use the 1MQ selection
for BNC cables.
Abort Softkey
The abort softkey is the only active key during the calibration process. The
calibration process is terminated and the previous calibration factors are left
intact when the abort softkey is pressed.
Max Test Voltage Softkey
The max test voltage softkey allows you to set a maximum voltage for
the calibration signal. The maximum voltage is the de voltage output of the
rear panel DC cal output connector, or front-panel probe compensation
connector. To prevent damage to the probe connected to the channel input,
select a maximum voltage for the probe you are using. Normally, a maximum
voltage of 5 volts is acceptable for most probes. However, some probes, like
the HP 11414, require a lower maximum voltage.
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