HP 83481A, User Manual, Page: 50 / 98

Channel Setup Menu
Displaying the Channel Setup Menus
Channel 1
Calibration
Status
The instrument displays Calibrated or Uncalibrated , depending on
whether the last plug-in module calibration is still valid. A calibration can be
invalidated if:
The mainframe has cycled power .
The plug-in has been repaired, reprogrammed, or removed from the
mainframe .
The instrument's operating temperature has changed and remains more
than 5 C from the temperature at which the Plug-in calibration was
performed.
Uncalibrated indicates the plug-in module vertical calibration is invalid.
Plug-in The Plug-in function lists the model number , serial number , date , time , and
temperature delta. The temperature 1 is the temperature change from the
temperature of the mainframe when the last calibration was performed. If
this temperature 1 is greater than 65 C since the last mainframe calibration,
then you must perform a plug-in module calibration to achieve the specied
dc accuracy .
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Offset zero The Oset Zero function performs a quick oset calibration on the optical
channel. Since the primary source of calibration error on the optical channel
is oset drift, this function is useful between the plug-in module vertical
calibrations if the plug-in module has not been removed or reinstalled and
the operating temperature has not changed more than 65 C. In order to
ensure that instrument specications are met, perform the plug-in vertical
calibration.
P erforming an Oset Zero calibration is much faster than performing a
complete vertical calibration.
K ey Path 4
Channel
5
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Calibrate
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Offset zero
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O/E cal The plug-in module is provided with factory optical calibrations at 1310 nm
and 1550 nm. The O/E Calibration function allows you to calibrate the
instrument for use at one additional user-dened wavelength between
1200 nm and 1600 nm. This calibration does not aect the factory
calibrations .
K ey Path 4 Channel 5
N NNNNNNNNNNNNNNNNNNNNNNNNNNNN
Calibrate
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O/E cal
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