M-140 Multifunction Calibrator
MEATEST
18
Operation manual v46
If voltage over 100 V is set in the voltage mode, special algorithm must be followed to connect the output terminals.
The algorithm is described in the „Generation of calibrated voltage“ chapter of this Manual.
Setting the frequency
Frequency can only be selected in AC voltage (ACV) mode, AC current (ACI) mode , power (P-E) mode and
frequency (f) mode. In each mode the frequency has a slightly different meaning and the frequency is therefore set
in a different manner.
AC voltage (ACV), AC current (ACI)
Set value of frequency is included in the “minor data” section of the display in ACV, ACI, P-E modes.
Frequency change
•
First select the AC voltage or AC current mode by pressing U (I), AC buttons or selecting the P-E
mode using the display. Frequency value „f = xxx.xx Hz“ appears in the “minor data” section of the
display. “ f “ symbol is displayed above one of the display buttons.
•
After “ f “ display button is pressed, [ _ _ _ _ _ _ _ ] symbols appear below the frequency value.
Numeric keyboard can be used to enter the desired value. Press “ Hz “ or “ kHz “ to confirm the
value. The value can be set using the buttons or the potentiometer.
If too large or too small value is entered, the calibrator displays the maximum (minimum) value which is allowed
for the selected function.
Frequency (F)
Set value of frequency is the main data on the display and the main parameter of the signal. Main data can be set
by direct entry using the numeric keyboard, potentiometer or by changing the digit at the current cursor position.
The setting procedure is described in the “Setting the value of output signal”.