Tektronix VX4101A - page 470

Appendix A: Specifications
A–24 VX4101A MultiPaq Instrument User Manual
Table A–57: DC Current Accuracy Specifications for 1 Millisecond Aperture
Range Burden 24 Hour 90 Day 1 Year Temp
Coefficient / _C
150 mA ±0.1 V 0.10% + 80 A 0.12% + 100 A 0.15% + 120 A0.05% + 8 A
1 A ±0.4 V 0.15% + 240 A 0.15% + 280 A 0.18% + 320 A 0.05% + 50 A
NOTE. Percents listed above are percent of reading. Instrument set up is as
follows:
Autozero On, after 20 minute warm-up.
Tcal is the calibration temperature (18 to 28° C). Specifications are for Tcal
±3° C. Multiply the total temperature coefficient by the difference between the
actual operating temperature and Tcal ±3° C.
Add 0.02% of the range setting to the first reading following a range change.
Burden voltage is the maximum voltage drop caused by the current measurement
for the maximum reading in the range.
For Autozero Off, do the following:
For daily and long term drift, add 110 mA/Day for the 150 mA range and
120 mA/Day for the 1A range.
For temperature drift, add 2 mA per °C for 150 mA range, and 15 mA per °C for
the 1A range.