0

What is required to obtain measurement uncertainties in my report?

MET/CAL requires certain information before it can calculate and report measurement uncertainties.  When using an Instrument FSC, the minimum information required can be found in this sample procedure for a handheld digital multimeter:

 1.001 ASK+ K 1.002 VSET NMEAS = 1 1.003 HEAD {DC VOLTAGE} 1.004 5520 100.0mV 0.1% 2W

The typical implementation looks something like the following example, which resembles a SCPI compliant digital multimeter procedure using GPIB for remote communication:

 1.001 ASK- R Q N P F W 1.002 ASK+ K 1.003 VSET NTHROW = 1; NMEAS = 1; NSD = 3 1.004 RSLT = 1.005 HEAD {DC VOLTAGE} 1.006 TARGET -p 1.007 DISP Make the following connections: 1.007 DISP [32] 5520A to UUT FRONT 1.007 DISP [32] NORMAL V/Ohm/Diode/RTD HI ---> Input V/Ohm/Diode HI 1.007 DISP [32] NORMAL V/Ohm/Diode/RTD LO ---> Input V/Ohm/Diode LO 1.007 DISP [32] AUX A/Ohm-SENSE/AUX V HI ---> Ohm 4W SENSE HI 1.007 DISP [32] AUX A/Ohm-SENSE/AUX V LO ---> Ohm 4W SENSE LO 1.008 TSET TDESC = 100 mV Range 1.009 SCPI FUNC "VOLT:DC";:VOLT:DC:RANG 100mV;RES 0.0001mV 1.010 5520 100.0000mV S 2W 1.011 TARGET -m 1.012 SCPI INIT;*TRG;FETCH?[I] 1.013 MATH MEM = MEM / 1E-3 1.014 MEMCX 100 100.0000mV 0.1% 2.001 TSET TDESC = 1 V Range 2.002 SCPI VOLT:DC:RANG 1V 2.003 5520 1.000000V S 2W 2.004 TARGET -m 2.005 SCPI INIT;*TRG;FETCH?[I] 2.006 MEMCX 1 1.000000V 0.1%

Please sign in to leave a comment.