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