M-142 Multifunction Calibrator
MEATEST, s.r.o.
50
User Manual v54
Frequency
function calibration is performed by calibration of DC voltage range and zero point check. DC
voltage levels are checked, between which the calibrator switches when generating the signal. The accuracy of
PWM of the square wave output signal depends on the frequency accuracy and cannot be calibrated, it can only
be checked. The respective check is not included in the calibration procedure.
Multimeter
is calibrated on voltage ranges 20 mV, 200 mV, 2 V and 10 VDC, on current range 20 mADC and
on resistance range 100
and 1000
. For calibration cable adapters Option 40 (10V range voltage, current),
Option 80 (20mV/200mV/2V range voltage) and Option 60 (resistance) must be used.
Access to the calibration procedure
Calibration code is required to access the calibration procedure.
•
Press SETUP to open the setup menu.
•
Press CALIB display button.
•
Concerning cable adapters, access to the calibration mode is permitted without connected any of cable
adapters or with connected cable adapter Option 40, Option 60, Option 70 and Option 80. If cable adapter
Option 140-01 is connected to the AUXILIARY connector, access to calibration mode is not permitted.
Calibrator will display message:
Err 9
Bad cable adapter !
•
If an attempt is made to access the calibration procedure within 60 minutes after the calibrator was switched
on, the calibrator does not open the respective menu and displays the following message instead:
Err 21
Time warm up !
xx minutes remain
•
If the calibrator is already on for at least 60 minutes, it requests the entry of the calibration code after CAL.
MODE display button is pressed.
•
Enter the correct calibration code using numeric keyboard and press ENTER.
•
If incorrect calibration code is entered, an error message appears on the display for approximately 3
seconds:
Err 20
Bad calib. code!
