prog.book : chapter1.fm 12 Mon Feb 15 09:24:37 1999
Power Meter Remote Operation
Zeroing and Calibrating the Power Meter
1-12 HP E4418B/E4419B Programming Guide
automatically. Offset, relative and duty cycle settings are ignored during
calibration.
The command used to calibrate the power meter is:
CALibration[1|2]:AUTO ONCE
The command assumes that the power sensor is connected to a 1 mW
reference signal. It turns the power reference oscillator on, then after
calibrating, returns the power reference oscillator to the same state it was
in prior to the command being received. It is recommended that you zero
the power meter before calibrating.
Calibration Sequence
This feature allows you to perform a complete calibration sequence with a
single query. The query is:
CALibration[1|2][:ALL]?
The query assumes that the power sensor is connected to the power
reference oscillator. It turns the power reference oscillator on, then after
calibrating, returns the power reference oscillator to the same state it was
in prior to the command being received. The calibration sequence consists
of:
• Zeroing the power meter (CALibration[1|2]:ZERO:AUTO
ONCE), and
• calibrating the power meter (CALibration[1|2]:AUTO ONCE).
The query enters a number into the output buffer when the sequence is
complete. If the result is 0 the sequence was successful. If the result is 1
the sequence failed. Refer to “CALibration[1|2][:ALL]?”, on page 4-5 for
further information.
Note The CALibration[1|2][:ALL] command is identical to the
CALibration[1|2][:ALL]? query except that no number is
returned to indicate the outcome of the sequence. You can examine
the Questionable Status Register or the error queue to discover if
the sequence has passed or failed. Refer to “Status Reporting”, on
page 1-71 for further information.
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