2 General Power Meter Functions
78 N1913/1914A EPM Series Power Meters User’s Guide
Zero/Cal Lockout
The Zero/Cal Lockout facility provides a mean of ensuring that a
measurement cannot be taken until the connected sensor has been zeroed
and calibrated. If the Zero/Cal Lockout facility is enabled and a sensor is
connected which have not been zeroed and calibrated, then the display
window for the sensor will display the message Please Zero and Cal.
Figure 2-42 Please zero and calibrate window
When you zero the sensor, the message changes to
Please Cal. If you
calibrate the sensor before zeroing it, the message changes to
Please Zero.
Dual channel meters display channel specific messages when a sensor is
connected. The Zero/Cal Lockout configuration is applied to both channels
- it cannot be applied to one channel only.
You can enable and disable the Zero/Cal Lockout facility from the System
menu or the Cal menu as follow:
Press , , or .
Similarly,
press , , or .
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