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