When valid test voltage identified the output terminals, the calibrator goes over RUNNING statue.Display shows information follows (Standby mode):
MEATEST.
D. s.
11.000k U
STAND BY
Local
Gnd
Test- voltag 0.
B. Green LED starts light.0 £
Umax:0 .002 Mode:
TIMER
ACCURACY
0 'T/
Fig.o. Timer mode STANDBY
- Measured time seconds with 100 resolution. Current test voltage presented the
process.
- Accuracy the measured time interval s. Select TIMER mode pushing repeatedly FUNCTION FUNCTION DOWN button until TIMERlabel
appears the display.
Operating procedure
A. 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. Switch output terminals the M191 ONby pushing the button OUTPUT ON. Use test leads delivered with UUT whenever possible.
E.
In STANDBY mode the calibrator waiting for test voltage. Connect UUT the output terminals.
- Vmax parameter maximum test voltage which
interval the Timer calibration. Compare M191 time interval reading the UUT preset time.
has been caught the calibrator during time
calibrator output terminals during calibration
User Manual v16 17
.8 Timer mode OFF
G.___________________________ M191 Insulation Tester Calibrator
0.
In this mode calibrator counts time for which the valid test voltage attached the output terminals. Minimum guaranteed valid test voltage which
can caught the calibrator 100 VDC. Select requested test voltage level UUT. 2:-;
Fig.
M191 goes over STANDBY.0 s
Umax:0 . Select resistance range UUT necessary.229kU
OFF
Local
Grid
Test, 11a'EJe: Mode :
TIMER
ACCURACY
0.r.
Notes:
Donotdisconnectconnectionbetween UUTandM191 calibratorotherwise themeasuredvaluesarenot valid. Select function
TIMER UUT and set-up requested time interval.
- Test voltage. This statue signalized with the label right upper corner the display.
Calibrator displays current time interval and current test voltage.
C. Use onlytest leads with guaranteedisolationaccording totest voltage
range UUT.
F
