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