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Model GFC7000E Instruction Manual Operating Instructions
04584 Rev A1 69
6.9.4. Analog I/O Configuration
The analog I/O functions that are available in the MGFC7000E are:
Table 6-8: DIAG - Analog I/O Functions
Sub Menu Function
AOUTS CALIBRATED: Shows the status of the analog output calibration (YES/NO) and initiates a
calibration of all analog output channels.
CONC_OUT_1 Sets the basic electronic configuration of the A1 analog output (CO
2
) . There are
three options:
Range: Selects the signal type (voltage or current loop) and full scale level of the
output.
REC_OFS: Allows to set a voltage offset (not available when RANGE is set to
CURRent loop.
Auto_CAL: Performs the same calibration as AOUT CALIBRATED, but on this one
channel only.
NOTE: Any change to RANGE or REC_OFS requires recalibration of this output.
CONC_OUT_2 Same as for CONC_OUT_1 but for analog channel 2 (CO
2
)
TEST OUTPUT Same as for CONC_OUT_1 but for analog channel 4 (TEST)
AIN CALIBRATED Shows the calibration status (YES/NO) and initiates a calibration of the analog to
digital converter circuit on the motherboard.
To configure the analyzer’s three analog outputs, set the electronic signal type of each channel
and calibrate the outputs. This consists of:
• Selecting an output type (voltage or current, if an optional current output driver has been
installed) and the signal level that matches the input requirements of the recording device
attached to the channel, see Sections 6.9.4.1.
• Calibrating the output channel. This can be done automatically or manually for each
channel, see Sections 6.9.4.2 and 6.9.4.3.
• Adding a bipolar recorder offset to the signal, if required (Section 6.9.4.2.)
In its standard configuration, the analyzer’s outputs can be set for the following DC voltages. Each
range is usable from -5% to + 5% of the nominal range.
Table 6-9: Analog Output Voltage Ranges
RANGE MINIMUM OUTPUT MAXIMUM OUTPUT
0-0.1 V -5 mV +105 mV
0-1 V -0.05 V +1.05 V
0-5 V -0.25 V +5.25 V
0-10 V -0.5 V +10.5 V
The default offset for all ranges is 0 VDC.