Tektronix VX4101A - page 461

Appendix A: Specifications
VX4101A MultiPaq Instrument User Manual A–15
Table A–35: Accuracy Specifications for 2-Second Aperture (Cont.)
Range Temp Coefficient1 Year90 Day24 Hour
30 V 0.009% + 900 V
(1.0 mV) 0.016% + 900 V (1.0 mV) 0.023% + 900 V (1.0 mV) 0.0010% + 50 V
300 V 0.007% + 8 mV (9 mV) 0.014% + 8 mV (9 mV) 0.020% + 8 mV (9 mV) 0.0010% + 500 V
NOTE. Values shown above in parenthesis are for a 200 ms aperture.
Table A–36: Accuracy Specification for  1 Millisecond Aperture
Range 24 Hour 90 Day 1 Year Temp Coefficient
30 mV 0.007% + 15 V (12 V) 0.012% + 15 V (12 V) 0.018% + 15 V (12 V) 0.0015% + 1.5 V
300 mV 0.005% + 30 V (20 V) 0.010% + 30 V (20 V) 0.015% + 30 V (20 V) 0.0015% + 2.5 V
3 V 0.004% + 150 V (100V) 0.008% + 150 V (100V) 0.012% + 150 V (100V) 0.0015% + 5 V
30 V 0.009% + 1.7 mV (1.2 mV) 0.016% + 1.7 mV (1.2 mV) 0.023% + 1.7 mV (1.2 mV) 0.0015% + 50 V
300 V 0.008% + 15 mV (10 mV) 0.014% + 15 mV (10 mV) 0.020% + 15 mV (10 mV) 0.0015% + 500 V
NOTE. Values shown above in parenthesis are for a 16.67 ms or 20 ms aperture.
NOTE. Percents listed above are percents of reading. The instrument setup is as
follows:
Autozero On following twenty minute warm-up period.
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 0.001% of the range setting to the first reading following a range change.
For Autozero Off, do the following:
For daily and long term drift, add 24 mV per day for the 30 mV and 300 mV
ranges, and 0.0027% of range for the other ranges.
For temperature drift, add .4 mV per _C for the 30 mV range, .001% of range
per _C for the other ranges.