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