## Feature #956

Updated by tin about 6 years ago

```
Calibration constants from K2001 can be read using GPIB command.
Table C-2 of 2001-905-01G calibration manual lists the response to the :CAL:PROT:DATA? query. The response is an ASCII string of 99 numbers separated by commas, and is not affected by the FORMAT command.
Constants listed in Table C-2 are shown in the order they are sent.
| |K2001 #7 |K2001 #1 | |
|g1 |1.000038E+00 |9.997173E-01 |RMS gain for 2V, 200V, and 750V AC ranges |
|of1 |1.533712E-04 |-1.583679E-04 |RMS offset for 2V, 200V, and 750V AC ranges |
|g10 |1.000523E+01 |1.000293E+01 |RMS gain for 200mV and 20V AC ranges |
|of10 |1.704422E-04 |-1.076852E-04 |RMS offset for 200mV and 20V AC ranges |
|gfwr1 |9.999993E-01 |9.999961E-01 |Average gain for 2V, 200V, and 750V AC ranges |
|offwr1 |2.698059E-05 |-3.915291E-05 |Average offset for 2V, 200V, and 750V AC ranges |
|gfwr10 |1.000433E+01 |1.000551E+01 |Average gain for 200mV and 20V AC ranges |
|offwr10 |1.689877E-04 |8.726960E-05 |Average offset for 200mV and 20V AC ranges |
|a100 |1.000210E+02 |9.998019E+01 |100:1 divider attenuation factor |
|a500 |4.963352E+02 |4.962888E+02 |500:1 divider attenuation factor |
|ofpkpos10 |6.097749E-03 |1.418733E-02 |Positive peak offset for 200mV AC range |
|ofpkneg10 |1.117921E-02 |1.722747E-02 |Negative peak offset for 200mV AC range |
|ofpk1 |4.573312E-03 |4.053523E-03 |Positive and negative peak offset for 2V, 200V, and 750V AC ranges |
|ofpkpos20 |6.097749E-03 |7.600356E-03 |Positive peak offset for 20V AC range |
|ofpkneg20 |1.117921E-02 |7.093666E-03 |Negative peak offset for 20V AC range |
|div100self |1.125000E+02 |1.340000E+02 |Self-calibration code for frequency compensation DAC, 100:1 divider |
|div500self |9.000000E+01 |1.260000E+02 |Self-calibration code for frequency compensation DAC, 500:1 divider |
|noise10 |1.864359E-04 |2.238526E-04 |Noise factor for 200mV and 20V AC ranges |
|cfc1 |1.000331E+00 |1.000316E+00 |Crest factor correction factor for 2V, 200V, and 750V AC ranges |
|cfc10 |1.000021E+00 |1.000284E+00 |Crest factor correction factor for 200mV and 20V AC ranges |
|acdclow |1.000346E+00 |1.000340E+00 |AC-coupled correction factor for 200mV and 2V AC ranges |
|acdchigh |1.000199E+00 |1.000192E+00 |AC-coupled correction factor for 20V, 200V, and 750V AC ranges |
|inputtc |1.081469E-01 |1.044814E-01 |Input time constant |
|acdccur |1.000348E+00 |1.000487E+00 |AC-coupled correction factor for AC current |
|compval1 |1.215000E+02 |1.190000E+02 |RMS comparator DAC code |
|div100 |1.135000E+02 |1.340000E+02 |Frequency-compensation DAC code for 20V AC range |
|div200 |1.130000E+02 |1.330000E+02 |Frequency-compensation DAC code for 200V AC range |
|div500 |9.300000E+01 |1.220000E+02 |Frequency-compensation DAC code for 750V AC range |
|div100off |1.000000E+00 |0.000000E+00 |Frequency-compensation DAC offset for 20V AC range |
|div200off |5.000000E-01 |-1.000000E+00 |Frequency compensation DAC offset for 200V AC range |
|div500off |3.000000E+00 |-4.000000E+00 |Frequency compensation DAC offset for 750V AC range |
|dcv[200mV]gain |1.395384E+00 |1.385034E+00 |200mV DC gain |
|dcv[200mV]offset |-1.541521E-05 |-5.612224E-05 |200mV DC offset |
|dcv[2V]gain |1.743986E+00 |1.730974E+00 |2V DC gain |
|dcv[2V]offset |-1.732121E-06 |-5.877960E-06 |2V DC offset |
|dcv[20V]gain |-6.976404E-01 |-6.924144E-01 |20V DC gain |
|dcv[20V]offset |-1.150898E-05 |-3.787601E-05 |20V DC offset |
|dcv[200V]gain |1.743655E+00 |1.730672E+00 |200V DC gain |
|dcv[200V]offset |-1.008386E-06 |2.410488E-06 |200V DC offset |
|dcv[1000V]gain |6.975011E-01 |6.922715E-01 |100V DC gain |
|dcv[1000V]offset |5.484389E-04 |-1.772726E-03 |1000V DC offset |
|dca[200uA]gain |1.396956E+00 |1.386757E+00 |200ΩA DC gain |
|dca[200uA]offset |-1.814614E-05 |1.600430E-04 |200ΩA DC offet |
|dca[2mA]gain |1.397030E+00 |1.386588E+00 |2mA DC gain |
|dca[2mA]offset |-2.236752E-05 |1.604392E-04 |2mA DC offset |
|dca[20mA]gain |1.394508E+00 |1.384073E+00 |20mA DC gain |
|dca[20mA]offset |-2.232714E-05 |1.601482E-04 |20mA DC offset |
|dca[200mA]gain |1.379412E+00 |1.370280E+00 |200mA DC gain |
|dca[200mA]offset |-2.208545E-05 |1.585523E-04 |200mA DC offset |
|dca[2A]gain |1.394483E+00 |1.384269E+00 |2A DC gain |
|dca[2A]offset |-2.232674E-05 |1.601709E-04 |2A DC offset |
|ohm2[20]gain |1.500375E+00 |1.516462E+00 |2-wire 20Ω gain |
|ohm2[20]offset |-9.411514E-03 |-1.058161E-02 |2-wire 20Ω offset |
|ohm2[200]gain |1.430062E+00 |1.430543E+00 |2-wire 200Ω gain |
|ohm2[200]offset |-9.552922E-04 |-1.109982E-03 |2-wire 200Ω offset |
|ohm2[2k]gain |1.787328E+00 |1.787851E+00 |2-wire 2kΩ gain |
|ohm2[2k]offset |-9.572465E-05 |-1.112534E-04 |2-wire 2kΩ offset |
|ohm2[20k]gain |1.965853E+00 |1.966221E+00 |2-wire 20kΩ gain |
|ohm2[20k]offset |-1.134743E-05 |-1.719503E-05 |2-wire 20kΩ offset |
|ohm2[200k]gain |2.479002E+00 |2.475204E+00 |2-wire 200kΩ gain |
|ohm2[200k]offset |-3.401631E-06 |-9.457002E-06 |2-wire 200kΩ offset |
|ohm2[2M]gain |2.273309E+00 |2.272104E+00 |2-wire 2MΩ gain |
|ohm2[2M]offset |-2.351793E-06 |-7.820685E-06 |2-wire 2MΩ offset |
|ohm2[20M]gain |2.503775E+00 |2.493262E+00 |2-wire 20MΩ gain |
|ohm2[20M]offset |-2.496137E-06 |-8.477018E-06 |2-wire 20MΩ offset |
|ohm2[200M]gain |3.925414E+00 |3.909291E+00 |2-wire 200MΩ gain |
|ohm2[200M]offset |1.234136E-02 |-4.004449E-02 |2-wire 200MΩ offset |
|ohm2[1G]gain |1.570253E+00 |1.563722E+00 |2-wire 1GΩ gain |
|ohm2[1G]offset |1.234442E-03 |-4.003584E-03 |2-wire 1GΩ offset |
|ohm4[20]gain |1.500375E+00 |1.516462E+00 |4-wire 20Ω gain |
|ohm4[20]offset |3.446987E-05 |4.566308E-05 |4-wire 20Ω offset |
|ohm4[200]gain |1.430062E+00 |1.430543E+00 |4-wire 200Ω gain |
|ohm4[200]offset |3.285450E-05 |4.307594E-05 |4-wire 200Ω offset |
|ohm4[2k]gain |1.787328E+00 |1.787851E+00 |4-wire 2kΩ gain |
|ohm4[2k]offset |3.026024E-06 |4.242987E-06 |4-wire 2kΩ offset |
|ohm4[20k]gain |1.965853E+00 |1.966221E+00 |4-wire 20kΩ gain |
|ohm4[20k]offset |3.328274E-06 |4.666301E-06 |4-wire 20kΩ offset |
|ohm4[200k]gain |2.479002E+00 |2.475204E+00 |4-wire 200kΩ gain |
|ohm4[200k]offset |4.197058E-06 |5.874237E-06 |4-wire 200kΩ offset |
|n7vref |6.976333E-01 |6.923925E-01 |7V reference value |
|rollover |9.999967E-01 |9.999954E-01 |±2V rollover |
|mux4d711 | 15813| 15897|Multiplexer 4-1/2 digit counts (AC peak) |
|mux4d711p5 | 8951| 9068|Multiplexer 4-1/2 digit counts (AC peak) |
|mux4d215 | 12388| 12479|Multiplexer 4-1/2 digit counts (AC peak) |
|mux4d011 | 29542| 29562|Multiplexer 4-1/2 digit counts (AC peak) |
|mux4d015 | 29542| 29562|Multiplexer 4-1/2 digit counts (AC peak) |
|mux4d0150 | 29540| 29561|Multiplexer 4-1/2 digit counts (AC peak) |
|mux4d011p5 | 29542| 29561|Multiplexer 4-1/2 digit counts (AC peak) |
|mux4dF150 | 1282| 1296|Multiplexer 4-1/2 digit counts (AC peak) |
|mux4dF15 | 6456| 6461|Multiplexer 4-1/2 digit counts (AC peak) |
|i20 |9.300236E-03 |9.133327E-03 |20Ω range current source value |
|i200 |9.757503E-04 |9.681874E-04 |200Ω range current source value |
|i2k |9.757503E-04 |9.681874E-04 |2kΩ range current source value |
|i20k |8.871397E-05 |8.803561E-05 |20kΩ range current source value |
|i200k |7.035033E-06 |6.993260E-06 |200kΩ range current source value |
|i2m |7.671572E-07 |7.618376E-07 |2MΩ range current source value |
|i20m |6.965424E-08 |6.942609E-08 |20MΩ range current source value |
|i200m |4.442807E-09 |4.427848E-09 |200MΩ range current source value |
|i1g |4.442807E-09 |4.427848E-09 |1GΩ range current source value |
```