s.r.
H.
D. Nominal input resistance 2. Select SHORT mode pushing repeatedly FUNCTION FUNCTION DOWN button until SHORT label
appears the display.
C.
F.
Display shows information follows:
Fig. Select requested test voltage level UUT.
Operating procedure
A.
M191 starts measure short current.
18 User Manual
. M191
milliampermeter has one range mAwith five-digit resolution this mode. Disconnect M191 output terminals using the button OUTPUT ON. Compare M191 reading UUT specification. Activate UUT measurement, typically pushing button the UUT.o. Select resistance range UUT necessary.M191 Insulation Tester Calibrator MEATEST. Use test leads delivered with UUT whenever possible.
Be aware that the test voltage for high resistance
measurements dangerous and can cause
electric shock!
Testleads deliveredwiththe calibratorareapprovedforapplication upto5kVDC.5 kQ. Connect UUT the output terminals.
B. Usetestleads deliveredwith
UUTsforhighertest voltages.
4. Green LED starts light.
G. Switch the UUT output OFF remove test voltage fromthe output terminals.
I.6 SHORT Short current mode
Short current mode (SHORT) designed enable verification short current capability UUTs -
megaohmmeters. M191 calibrator measures the short current and displays it. UUT starts source current. Use only test leads with guaranteed isolation according test voltage
range UUT. M191 measures test current sourced UUT under short circuit condition.9 SHORT mode
- Measured short current mA
- Accuracy the measured value %. Connect output terminals the M191 pushing the button OUTPUT ON.
E
