Teledyne API T703/T703U Calibrator Operation Manual Operating the Calibrator
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TEST CHANNEL CALIBRATION 4.9.2.
TEST CHANNEL calibration needs to be carried out on first startup of the
instrument (performed in the factory as part of the configuration process) or
whenever re-calibration is required. The analog outputs can be calibrated
automatically or adjusted manually. In its default mode, the instrument is
configured for automatic calibration of all channels, which is useful for clearing
any analog calibration warnings associated with channels that will not be used or
connected to any input or recording device, e.g., datalogger.
During automatic calibration, the instrument tells the output circuitry to generate
a zero mV signal and high-scale point signal (usually about 90% of chosen analog
signal scale) then measures actual signal of the output. Any error at zero or high-
scale is corrected with a slope and offset.
Manual calibration should be used for the 0.1V range or in cases where the
outputs must be closely matched to the characteristics of the recording device.
Manual calibration requires the AUTOCAL feature to be disabled.
Automatic calibration can be performed via the AOUTS
CALIBRATION command, or by using the CAL button located inside
TEST_CHANNEL submenu. By default, the instrument is configured so that
calibration of TEST CHANNEL can be initiated with the AOUTS
CALIBRATION command.
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