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Before any testing or calibration can be performed on the Output Test page, the IO board must
be placed in
Direct Board Control
mode by selecting the
Direct Board Control Enable
option at
the top left of the screen. In Direct Board Control mode, all hardware outputs on the IO board are
under manual control, and cannot be controlled by the analyzer’s computer.
When in Direct Board Control mode, the outputs on the IO board are under manual
control only. No normal analysis can be carried out in this mode. Prior to leaving the
Output Test page, the Direct Board Control Enable toggle MUST be disabled to place
the IO board outputs back under automatic control of the analyzer computer.
The
Disable PID
toggle is used to disable the temperature control for the sample cell. Unless this
option is selected, the PID temperature control will remain under automatic control of the
analyzer computer even when the IO board is in Direct Board Control mode.
4.5.1.1 Analog Output Calibration and Testing
The Analog Output section of the Output Test page is used to calibrate and test the analog
output(s) on the IO board. The number of analog outputs available for calibration and testing will
depend on the analyzer’s specific hardware configuration. The Analog Output section for a single
analog output is shown in Figure 49.
Figure 41: Analog Output Calibration and Test
In the top box are several fields. The
Description
field describes the analog output, and by default
this field simply contains the analog output number. The
Units
field describes the unit in which
the signal is output from the analog output. By default, the output unit for any analog output is
milliamps. If the
Failsafe
option is selected, when the AccuLase-GPA™ is placed into bypass mode
the analog output value will switch to the fail-safe output signal, which by default is 3mA. The
Calculated Output
field shows the signal output, in milliamps, from the analog output based on
the output configuration configured in the sections below.
