4 CALibration Subsystem
204 N1911A/1912A P-Series Power Meters Programming Guide
CALibration[1]|2[:ALL]?
This query causes the power meter to perform a calibration sequence on
the specified channel. The query assumes that the power sensor is
connected to the POWER REF output. The calibration sequence consists of:
1 Zeroing the power meter (CALibration:ZERO:AUTO ONCE), and
2 Calibrating the power meter (CALibration:AUTO ONCE).
When the calibration sequence is completed, 0 or 1 is entered into the
output buffer to indicate if the sequence was successful. If the result is:
• 0, the calibration has passed
• 1, the calibration has failed
For the 8480 and N8480 Series power sensors with Option CFT the
reference calibration factor used during this calibration can be derived
from either an active sensor calibration table or the value entered using
CALibration:RCFactor. The actual value used is the one which was most
recently set. That is, a value entered using CALibration:RCFactor is
overridden if a sensor calibration table is subsequently selected and
enabled. Conversely, CALibration:RCFactor overrides any reference
calibration factor previously set from a sensor calibration table. To
determine the currently set reference calibration factor use
CALibration:RCFactor?.
The E- Series power sensors and N8480 Series power sensors (excluding
Option CFT) have their sensor calibration tables stored in EEPROM which
means that the reference calibration factor is automatically downloaded by
the power meter.
This query is identical to CALibration[1]|2[:ALL], however, unlike the command, it
provides a response to indicate whether the calibration has been successful or not.
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