Feature #956

Calibration constants for K2001 units

Added by tin over 3 years ago. Updated 6 months ago.

Status:ClosedStart date:09/02/2014
Priority:NormalDue date:15/02/2014
Assignee:tin% Done:

20%

Category:-
Target version:-

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

History

#1 Updated by tin over 3 years ago

  • Description updated (diff)

#2 Updated by tin over 3 years ago

  • Description updated (diff)

#3 Updated by tin 6 months ago

  • Status changed from In Progress to Closed

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