When valid test voltage identified the output terminals, the calibrator goes over RUNNING statue.0 £
Umax:0 . Select function
TIMER UUT and set-up requested time interval. This statue signalized with the label right upper corner the display. Use test leads delivered with UUT whenever possible. Select requested test voltage level UUT. Current test voltage presented the
process.
Notes:
Donotdisconnectconnectionbetween UUTandM191 calibratorotherwise themeasuredvaluesarenot valid.000k U
STAND BY
Local
Gnd
Test- voltag 0.Display shows information follows (Standby mode):
MEATEST.
C.002 Mode:
TIMER
ACCURACY
0 'T/
Fig.
D.
F.
has been caught the calibrator during time
calibrator output terminals during calibration
User Manual v16 17
.
In this mode calibrator counts time for which the valid test voltage attached the output terminals. Green LED starts light.0 s
Umax:0 . When the test voltage disconnected UUT, calibrator stops operation, goes over statue OFF,
disconnect output terminals and hold value measured time interval and maximum test voltage which has
been detected during the period.r.
11.
Operating procedure
A. Switch output terminals the M191 ONby pushing the button OUTPUT ON. Use onlytest leads with guaranteedisolationaccording totest voltage
range UUT.
B.229kU
OFF
Local
Grid
Test, 11a'EJe: Mode :
TIMER
ACCURACY
0. Select resistance range UUT necessary.___________________________ M191 Insulation Tester Calibrator
0. Select TIMER mode pushing repeatedly FUNCTION FUNCTION DOWN button until TIMERlabel
appears the display.8 Timer mode OFF
G.o. Connect UUT the output terminals. Compare M191 time interval reading the UUT preset time.
Calibrator displays current time interval and current test voltage.
- Accuracy the measured time interval s.
M191 goes over STANDBY.
- Test voltage. Timer mode STANDBY
- Measured time seconds with 100 resolution. s. 2:-;
Fig.
- Vmax parameter maximum test voltage which
interval the Timer calibration. Minimum guaranteed valid test voltage which
can caught the calibrator 100 VDC.
E.
In STANDBY mode the calibrator waiting for test voltage
