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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                                           |

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