Model SR715 Model SR720 LCR Meters

REMOTE PROGRAMMINGenable registers maintain their values at power down. This allows theproduction of a service request at power up.*SRE (?) {i}*STB? {i}SENA (?) {i}STAT? {i}The *SRE i command sets the serial poll enable register to the decimal valuei (0-255). The *SRE? query returns the value (0-255) of the serial poll enableregister.The *STB? command queries the value of the serial poll byte. The value isreturned as a decimal number from 0 to 255. The *STB? i command queriesthe value (0 or 1) of bit i (0-7). Reading this byte has no effect on its value.The SENA command sets the LCR status enable register to the decimalvalue i (0-255). The SENA? query returns the value (0-255) of the LCR statusenable register.The STAT? query reads the value of the LCR status byte. The value isreturned as a decimal number from 0 to 255. The STAT? i returns the value(0 or 1) of bit i (0-7). Reading this register will clear it while reading bit i willclear just bit i.HARDWARE TEST AND CALIBRATION COMMANDSNOTE: These commands are primarily intended for factory calibration use and should never be needed duringnormal operation. See the CALIBRATION section for details on calibrating the unit. Incorrect use of some ofthese commands can destroy the calibration of the SR715/720.*CAL? iThe *CAL? i common query initiates the SR715/720's self calibrationroutines. When the calibration is complete the status of the calibration isreturned. The parameter i determines which calibration will be performed. If i= 0 the Short Circuit calibration will be done. If i = 1 the Open Circuitcalibration will be done. And, if i = 2 the Standard Resistor calibration will bedone. The calibration status may have the following return values:Status Meaning0 No Error1 Measurement Error (overload, etc.).2 Short Circuit Calibration Error. The short circuit impedance was toohigh.3 Open Circuit Calibration Error. The open circuit impedance was toolow.4 Standard Resistor Calibration Error. The standard resistor calibrationvalue was out of range.*TST?The *TST? common query runs the SR715/720's internal self-tests. After thetests are complete, the test status is returned. The test status may have thefollowing values:Status Meaning0 No Error1 CPU Error. There is a problem with the CPU.2 Code Error. The ROM firmware has a checksum error.3 System RAM Error. The system RAM has failed its memory test.4 Calibration Data Error. The calibration data is no longer valid.5 Clock Generator Error. The drive frequency clock failed its test.6 ADC Error. The A/D converter or multiplier failed its test.7 Drive Error. The sine wave output amplitude control failed its test.4-8