Menu Reference 3
E4418B Power Meter User’s Guide 141
confirm your choice, press . This softkey cannot be selected when
you are using an Agilent E- Series power sensor or N8480 Series power
sensor (excluding Option CFT).
•
Press this softkey to switch the POWER REF output on or off. This output
is used as the signal source for calibration. The default is “Off”.
•
Press this softkey to switch the Zero/Cal Lockout facility On or Off. When
Zero/Cal Lockout is On, the power meter is prevented from making a
measurement until the sensor connected has been zeroed and calibrated.
This softkey is coupled to the equivalent softkey in the System Inputs
menu.
•
Press this softkey to disable or enable (Off/On) the ZERO and CAL rear
panel TTL inputs.
During calibration the power meter automatically switches the power reference oscillator
on (if it is not already on), then after calibration, it switches it to the state it was in prior to
the calibration.
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