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Setup Menu T400 Ozone Analyzer Operator’s Manual
116
5.10.1.4. Manual Calibration of the Analog Outputs Configured for Voltage Ranges
For highest accuracy, the voltages of the analog outputs can be manually calibrated.
Note The menu for manually adjusting the analog output signal level will only
appear if the AUTO-CAL feature is turned off for the channel being
adjusted (See Section 5.10.1.2).
Calibration is performed with a voltmeter connected across the output terminals and by
changing the actual output signal level using the front panel buttons in 100, 10 or 1
count increments. See Figure 3-7 for pin assignments and diagram of the analog output
connector.
V
+DC Gnd
Figure 5-4: Setup for Calibrating Analog Output
Table 5-5: Voltage Tolerances for the TEST CHANNEL Calibration
FULL
SCALE
ZERO
TOLERANCE
SPAN VOLTAGE
SPAN
TOLERANCE
MINIMUM
ADJUSTMENT
(1 count)
0.1 VDC ±0.0005V 90 mV ±0.001V 0.02 mV
1 VDC ±0.001V 900 mV ±0.001V 0.24 mV
5 VDC ±0.002V 4500 mV ±0.003V 1.22 mV
10 VDC ±0.004V 4500 mV ±0.006V 2.44 mV
To adjust the signal levels of an analog output channel manually, select the ANALOG
I/O CONFIGURATION submenu (see Figure 5-3) then press:
06870C DCN6332