Agilent Technologies 83487A, Руководство пользователя

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2-13
Channel Setup Menu
Calibrate
Plug-in
This function lists the model number, serial number, date, time, and tempera-
ture delta. The temperature
∆
is the mainframe temperature change since the
last calibration. If this temperature
∆
is greater than ±5
°
C since the last main-
frame calibration, then you must perform a plug-in module calibration to
achieve the specified dc accuracy.
Offset zero
The
Offset zero
function performs a quick offset calibration on the optical chan-
nel. Since the primary source of calibration error on the optical channel is off-
set drift, this function is useful:
• after the plug-in module vertical calibration described in Chapter 3, “Cali-
bration Overview” has been performed,
and
• if the plug-in module has not been removed and reinstalled.
Performing an Offset zero calibration is much faster than performing a com-
plete vertical calibration.
Key Path
Channel, Calibrate, Offset zero
O/E cal
The plug-in module is provided with factory optical calibrations at 850 nm and
1550 nm. The
O/E cal
function allows you to calibrate the instrument for use at
one additional user-defined wavelength between 750 nm and 860 nm. This cal-
ibration does
not affect the factory calibrations.
Calibrate probe
Connect a voltage probe to the plug-in and press
Calibrate probe
.
The analyzer calibrates to the tip of the probe by setting the probe attenuation
to the actual attenuation ratio of the probe. The analyzer also automatically
compensates for any offset the probe may introduce. The CAL signal is inter-
nally routed to the probe tip for Agilent Technologies probes.
Key Path
Channel, Calibrate, Calibrate probe