User Manual – Rev AJ California Instruments4.2.11.2 VOLTAGE/CURRENT CONTROL SETUP menuTAGE/CURRENT CONTROL SETUP MenuFigure 4-22: VOLoperation of the AC source andmenu.The following options are available in this menu:at ispossible with ALC off.Note: The Automatic Voltage Level Control (ALC) mode is mutually exclusive with theThe VOLTAGE/CURRENT CONTROL SETUP menu may be used to set output voltage andcurrent control parameters. These parameters are not frequently changed in the normalare thus located on the UTILITY rather than the PROGRAMALC MODE Automatic Level Control of programmed output voltage. Thismode will use the internal voltage measurements to adjust theoutput voltage continuously as needed. This effectivelyincreases the output accuracy and regulation beyond whProgrammable Impedance function of the MX30-3Pi or MX45-3Pi. One must beturned off the enable the other.OL MODE This field is used to select constant current (CC) or constantvoltage (CV) mode. The constant current mode will limit themaximum amount of current drawn by the load to the set value.The voltage will be reduced as needed after the trip delay timeto maintain the level of programmed current.The constant voltage mode will maintain the set voltage as longas the current drawn by the load does not exceed the currentlimit programmed. If the current limit is exceeded, the output willbe shut off after the trip delay time.TRIP DELAY The trip delay field may be used to set the amount of time tohold off the current limit trip point. The minimum amount of timeis 100 ms or 0.1 sec. The maximum amount of time is 5.00sec.VOLT SENSE This field selects the internal or external sense line inputs.Internal sense does not require the external sense lines to beconnected as sensing occurs at the output relay of the ACsource. For best results, connect the external sense lines andselect the EXT sense mode in this field. This will compensatefor voltage drop in the cables to the load. The measurementsare also taken at the sense points, so the external sense modeshould be used for best measurement results.MX Series 109
