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26 Operation Overview
Input Current, Voltage, and Power Measurement
Each module’s input current, voltage, and power can be measured at the front panel (
key) or via the GPIB (MEAS
command). With local (front panel) control in effect, pressing
will continually step the display through voltage and
current input values, the computed power value, and various status conditions for the selected channel.
With remote control in effect, a module may be instructed to measure its dc input voltage, current, or power by sending the
appropriate query command (e.g. MEAS:CURR). The results will be read back when the Electronic Load is addressed to
talk. Voltage and current measurements are performed with approximately 12-bit resolution of full scale ratings. Power is
computed from this information.
Figure 2-9. Transition Times and Slew Rates
Short On/Off
A module can simulate a short circuit at its input by turning the load on with full-scale current. The short circuit can be
toggled on/off at the front panel
key) or via the GPIB (INPUT:SHORT ON|OFF command). The short
on/off change uses the slew rate setting of the active mode and range.