Feature #956
Calibration constants for K2001 units
Start date:
02/09/2014
Due date:
02/15/2014
% Done:
20%
Estimated time:
Description
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 | ROM Offset | data format | ||
| g1 | 1.000038E+00 | 9.997173E-01 | RMS gain for 2V, 200V, and 750V AC ranges | 0x018 | double float IEEE 754 |
| of1 | 1.533712E-04 | -1.583679E-04 | RMS offset for 2V, 200V, and 750V AC ranges | 0x020 | double float IEEE 754 |
| g10 | 1.000523E+01 | 1.000293E+01 | RMS gain for 200mV and 20V AC ranges | 0x028 | double float IEEE 754 |
| of10 | 1.704422E-04 | -1.076852E-04 | RMS offset for 200mV and 20V AC ranges | 0x030 | double float IEEE 754 |
| gfwr1 | 9.999993E-01 | 9.999961E-01 | Average gain for 2V, 200V, and 750V AC ranges | 0x038 | double float IEEE 754 |
| offwr1 | 2.698059E-05 | -3.915291E-05 | Average offset for 2V, 200V, and 750V AC ranges | 0x040 | double float IEEE 754 |
| gfwr10 | 1.000433E+01 | 1.000551E+01 | Average gain for 200mV and 20V AC ranges | 0x048 | double float IEEE 754 |
| offwr10 | 1.689877E-04 | 8.726960E-05 | Average offset for 200mV and 20V AC ranges | 0x050 | double float IEEE 754 |
| a100 | 1.000210E+02 | 9.998019E+01 | 100:1 divider attenuation factor | 0x058 | double float IEEE 754 |
| a500 | 4.963352E+02 | 4.962888E+02 | 500:1 divider attenuation factor | 0x060 | double float IEEE 754 |
| ofpkpos10 | 6.097749E-03 | 1.418733E-02 | Positive peak offset for 200mV AC range | 0x068 | double float IEEE 754 |
| ofpkneg10 | 1.117921E-02 | 1.722747E-02 | Negative peak offset for 200mV AC range | 0x070 | double float IEEE 754 |
| ofpk1 | 4.573312E-03 | 4.053523E-03 | Positive and negative peak offset for 2V, 200V, and 750V AC ranges | 0x078 | double float IEEE 754 |
| ofpkpos20 | 6.097749E-03 | 7.600356E-03 | Positive peak offset for 20V AC range | 0x080 | double float IEEE 754 |
| ofpkneg20 | 1.117921E-02 | 7.093666E-03 | Negative peak offset for 20V AC range | 0x088 | double float IEEE 754 |
| div100self | 1.125000E+02 | 1.340000E+02 | Self-calibration code for frequency compensation DAC, 100:1 divider | 0x090 | double float IEEE 754 |
| div500self | 9.000000E+01 | 1.260000E+02 | Self-calibration code for frequency compensation DAC, 500:1 divider | 0x098 | double float IEEE 754 |
| noise10 | 1.864359E-04 | 2.238526E-04 | Noise factor for 200mV and 20V AC ranges | 0x0a0 | double float IEEE 754 |
| cfc1 | 1.000331E+00 | 1.000316E+00 | Crest factor correction factor for 2V, 200V, and 750V AC ranges | 0x0a8 | double float IEEE 754 |
| cfc10 | 1.000021E+00 | 1.000284E+00 | Crest factor correction factor for 200mV and 20V AC ranges | 0x0b0 | double float IEEE 754 |
| acdclow | 1.000346E+00 | 1.000340E+00 | AC-coupled correction factor for 200mV and 2V AC ranges | 0x0b8 | double float IEEE 754 |
| acdchigh | 1.000199E+00 | 1.000192E+00 | AC-coupled correction factor for 20V, 200V, and 750V AC ranges | 0x0c0 | double float IEEE 754 |
| inputtc | 1.081469E-01 | 1.044814E-01 | Input time constant | 0x0c8 | double float IEEE 754 |
| acdccur | 1.000348E+00 | 1.000487E+00 | AC-coupled correction factor for AC current | 0x0d0 | double float IEEE 754 |
| compval1 | 1.215000E+02 | 1.190000E+02 | RMS comparator DAC code | 0x0d8 | double float IEEE 754 |
| div100 | 1.135000E+02 | 1.340000E+02 | Frequency-compensation DAC code for 20V AC range | 0x0e0 | double float IEEE 754 |
| div200 | 1.130000E+02 | 1.330000E+02 | Frequency-compensation DAC code for 200V AC range | 0x0e8 | double float IEEE 754 |
| div500 | 9.300000E+01 | 1.220000E+02 | Frequency-compensation DAC code for 750V AC range | 0x0f0 | double float IEEE 754 |
| div100off | 1.000000E+00 | 0.000000E+00 | Frequency-compensation DAC offset for 20V AC range | 0x0f8 | double float IEEE 754 |
| div200off | 5.000000E-01 | -1.000000E+00 | Frequency compensation DAC offset for 200V AC range | 0x100 | double float IEEE 754 |
| div500off | 3.000000E+00 | -4.000000E+00 | Frequency compensation DAC offset for 750V AC range | 0x108 | double float IEEE 754 |
| Check sum | 0xA5 0xB4 | 16-bit summator of cal values 0x18 - 0x108 , rotated byte by 4 | 0x110 | 2 bytes, 16 bits | |
| dcv[200mV]gain | 1.395384E+00 | 1.385034E+00 | 200mV DC gain | 0x112 | double float IEEE 754 |
| dcv[200mV]offset | -1.541521E-05 | -5.612224E-05 | 200mV DC offset | 0x11a | double float IEEE 754 |
| dcv[2V]gain | 1.743986E+00 | 1.730974E+00 | 2V DC gain | 0x122 | double float IEEE 754 |
| dcv[2V]offset | -1.732121E-06 | -5.877960E-06 | 2V DC offset | 0x12a | double float IEEE 754 |
| dcv[20V]gain | -6.976404E-01 | -6.924144E-01 | 20V DC gain | 0x132 | double float IEEE 754 |
| dcv[20V]offset | -1.150898E-05 | -3.787601E-05 | 20V DC offset | 0x13a | double float IEEE 754 |
| dcv[200V]gain | 1.743655E+00 | 1.730672E+00 | 200V DC gain | 0x142 | double float IEEE 754 |
| dcv[200V]offset | -1.008386E-06 | 2.410488E-06 | 200V DC offset | 0x14a | double float IEEE 754 |
| dcv[1000V]gain | 6.975011E-01 | 6.922715E-01 | 100V DC gain | 0x152 | double float IEEE 754 |
| dcv[1000V]offset | 5.484389E-04 | -1.772726E-03 | 1000V DC offset | 0x15a | double float IEEE 754 |
| dca[200uA]gain | 1.396956E+00 | 1.386757E+00 | 200ΩA DC gain | 0x162 | double float IEEE 754 |
| dca[200uA]offset | -1.814614E-05 | 1.600430E-04 | 200ΩA DC offet | 0x16a | double float IEEE 754 |
| dca[2mA]gain | 1.397030E+00 | 1.386588E+00 | 2mA DC gain | 0x172 | double float IEEE 754 |
| dca[2mA]offset | -2.236752E-05 | 1.604392E-04 | 2mA DC offset | 0x17a | double float IEEE 754 |
| dca[20mA]gain | 1.394508E+00 | 1.384073E+00 | 20mA DC gain | 0x182 | double float IEEE 754 |
| dca[20mA]offset | -2.232714E-05 | 1.601482E-04 | 20mA DC offset | 0x18a | double float IEEE 754 |
| dca[200mA]gain | 1.379412E+00 | 1.370280E+00 | 200mA DC gain | 0x192 | double float IEEE 754 |
| dca[200mA]offset | -2.208545E-05 | 1.585523E-04 | 200mA DC offset | 0x19a | double float IEEE 754 |
| dca[2A]gain | 1.394483E+00 | 1.384269E+00 | 2A DC gain | 0x1a2 | double float IEEE 754 |
| dca[2A]offset | -2.232674E-05 | 1.601709E-04 | 2A DC offset | 0x1aa | double float IEEE 754 |
| ohm220gain | 1.500375E+00 | 1.516462E+00 | 2-wire 20Ω gain | 0x1b2 | double float IEEE 754 |
| ohm220offset | -9.411514E-03 | -1.058161E-02 | 2-wire 20Ω offset | 0x1ba | double float IEEE 754 |
| ohm2200gain | 1.430062E+00 | 1.430543E+00 | 2-wire 200Ω gain | 0x1c2 | double float IEEE 754 |
| ohm2200offset | -9.552922E-04 | -1.109982E-03 | 2-wire 200Ω offset | 0x1ca | double float IEEE 754 |
| ohm2[2k]gain | 1.787328E+00 | 1.787851E+00 | 2-wire 2kΩ gain | 0x1d2 | double float IEEE 754 |
| ohm2[2k]offset | -9.572465E-05 | -1.112534E-04 | 2-wire 2kΩ offset | 0x1da | double float IEEE 754 |
| ohm2[20k]gain | 1.965853E+00 | 1.966221E+00 | 2-wire 20kΩ gain | 0x1e2 | double float IEEE 754 |
| ohm2[20k]offset | -1.134743E-05 | -1.719503E-05 | 2-wire 20kΩ offset | 0x1ea | double float IEEE 754 |
| ohm2[200k]gain | 2.479002E+00 | 2.475204E+00 | 2-wire 200kΩ gain | 0x1f2 | double float IEEE 754 |
| ohm2[200k]offset | -3.401631E-06 | -9.457002E-06 | 2-wire 200kΩ offset | 0x1fa | double float IEEE 754 |
| ohm2[2M]gain | 2.273309E+00 | 2.272104E+00 | 2-wire 2MΩ gain | 0x202 | double float IEEE 754 |
| ohm2[2M]offset | -2.351793E-06 | -7.820685E-06 | 2-wire 2MΩ offset | 0x20a | double float IEEE 754 |
| ohm2[20M]gain | 2.503775E+00 | 2.493262E+00 | 2-wire 20MΩ gain | 0x212 | double float IEEE 754 |
| ohm2[20M]offset | -2.496137E-06 | -8.477018E-06 | 2-wire 20MΩ offset | 0x21a | double float IEEE 754 |
| ohm2[200M]gain | 3.925414E+00 | 3.909291E+00 | 2-wire 200MΩ gain | 0x222 | double float IEEE 754 |
| ohm2[200M]offset | 1.234136E-02 | -4.004449E-02 | 2-wire 200MΩ offset | 0x22a | double float IEEE 754 |
| ohm2[1G]gain | 1.570253E+00 | 1.563722E+00 | 2-wire 1GΩ gain | 0x232 | double float IEEE 754 |
| ohm2[1G]offset | 1.234442E-03 | -4.003584E-03 | 2-wire 1GΩ offset | 0x23a | double float IEEE 754 |
| ohm420gain | 1.500375E+00 | 1.516462E+00 | 4-wire 20Ω gain | 0x242 | double float IEEE 754 |
| ohm420offset | 3.446987E-05 | 4.566308E-05 | 4-wire 20Ω offset | 0x24a | double float IEEE 754 |
| ohm4200gain | 1.430062E+00 | 1.430543E+00 | 4-wire 200Ω gain | 0x252 | double float IEEE 754 |
| ohm4200offset | 3.285450E-05 | 4.307594E-05 | 4-wire 200Ω offset | 0x25a | double float IEEE 754 |
| ohm4[2k]gain | 1.787328E+00 | 1.787851E+00 | 4-wire 2kΩ gain | 0x262 | double float IEEE 754 |
| ohm4[2k]offset | 3.026024E-06 | 4.242987E-06 | 4-wire 2kΩ offset | 0x26a | double float IEEE 754 |
| ohm4[20k]gain | 1.965853E+00 | 1.966221E+00 | 4-wire 20kΩ gain | 0x272 | double float IEEE 754 |
| ohm4[20k]offset | 3.328274E-06 | 4.666301E-06 | 4-wire 20kΩ offset | 0x27a | double float IEEE 754 |
| ohm4[200k]gain | 2.479002E+00 | 2.475204E+00 | 4-wire 200kΩ gain | 0x282 | double float IEEE 754 |
| ohm4[200k]offset | 4.197058E-06 | 5.874237E-06 | 4-wire 200kΩ offset | 0x28a | double float IEEE 754 |
| n7vref | 6.976333E-01 | 6.923925E-01 | 7V reference value | 0x2d2 | double float IEEE 754 |
| rollover | 9.999967E-01 | 9.999954E-01 | ±2V rollover | 0x2da | double float IEEE 754 |
| mux4d711 | 15813 | 15897 | Multiplexer 4-1/2 digit counts (AC peak) | 0x2e2 | uint32_t |
| mux4d711p5 | 8951 | 9068 | Multiplexer 4-1/2 digit counts (AC peak) | 0x2e6 | uint32_t |
| mux4d215 | 12388 | 12479 | Multiplexer 4-1/2 digit counts (AC peak) | 0x2ea | uint32_t |
| mux4d011 | 29542 | 29562 | Multiplexer 4-1/2 digit counts (AC peak) | 0x2ee | uint32_t |
| mux4d015 | 29542 | 29562 | Multiplexer 4-1/2 digit counts (AC peak) | 0x2f2 | uint32_t |
| mux4d0150 | 29540 | 29561 | Multiplexer 4-1/2 digit counts (AC peak) | 0x2f6 | uint32_t |
| mux4d011p5 | 29542 | 29561 | Multiplexer 4-1/2 digit counts (AC peak) | 0x2fa | uint32_t |
| mux4dF150 | 1282 | 1296 | Multiplexer 4-1/2 digit counts (AC peak) | 0x2fe | uint32_t |
| mux4dF15 | 6456 | 6461 | Multiplexer 4-1/2 digit counts (AC peak) | 0x302 | float IEEE 754 |
| i20 | 9.300236E-03 | 9.133327E-03 | 20Ω range current source value | 0x306 | float IEEE 754 |
| i200 | 9.757503E-04 | 9.681874E-04 | 200Ω range current source value | 0x30a | float IEEE 754 |
| i2k | 9.757503E-04 | 9.681874E-04 | 2kΩ range current source value | 0x30e | float IEEE 754 |
| i20k | 8.871397E-05 | 8.803561E-05 | 20kΩ range current source value | 0x312 | float IEEE 754 |
| i200k | 7.035033E-06 | 6.993260E-06 | 200kΩ range current source value | 0x316 | float IEEE 754 |
| i2m | 7.671572E-07 | 7.618376E-07 | 2MΩ range current source value | 0x31a | float IEEE 754 |
| i20m | 6.965424E-08 | 6.942609E-08 | 20MΩ range current source value | 0x31e | float IEEE 754 |
| i200m | 4.442807E-09 | 4.427848E-09 | 200MΩ range current source value | 0x322 | float IEEE 754 |
| i1g | 4.442807E-09 | 4.427848E-09 | 1GΩ range current source value | 0x326 | float IEEE 754 |
0x32a offset - 2 bytes - 0x05 0x97
Calibration date - ASCII MM/DD/YY on offset 0x32C - 8 bytes
0x334 offset - 0x00
Next calibration date - ASCII MM/DD/YY on offset 0x335 - 8 bytes
Big endian