Keithley 3940 Service Manual page 54

Table B-4. Minimum AC Amplitude, Resolution, and DC Voltage Accuracy for AC + DC
(OPEN load)
Open load, CONT mode, frequency up to lOkHz, temperature within i5"C of calibration temperature
Total Set Voltage* >lV >lOOmV >lOmV I;lOmV
Minimum AC Amplitude
2OOmVp-p 2OmVp-p
2mVP-P
2mb-P
AC Amplitude Resolution
IOmVp-p
lmb-p
O.lmVp-p lOmVp-p
DC Voltage Resolution 5mVp-p 0.5mVp-p
5OFVPP 5mVP-P
DC Voltage Accuracy When AC amplitude is
When AC amplitude is When AC amplitude is Not Specified
>2.OOV zt(O.S% of AC >2OOmV f(O.546 of AC
>2O.OmV ffO.596 of AC
amplitude + 1% of DC
amplitude + 2% of DC amplitude + 3% of DC
offset voltage +2OmV) offset voltage +2mVI
offset voltage +0.2mVI
When AC amplitude is When AC amplitude is
When AC amplitude is Not specified
GMOV f(l% of AC GOOmV f(l% of AC
GLO.OmV f(l% of AC
amplitude +2% of DC amplitude +3% of DC
amplitude +4% of DC
offset voltage +4OmVI offset voltage +4mv) offset voltage +0.4mVI
Output Attenuator
l/l
l/10 l/100
l/1000
Total Set Voltage =
Set AC Amplitude (VP-p)
+ I Set DC Voltage 0 I
2