Analog Output Voltage Range Configuration; Adding A Recorder Offset To The Analog Output; Calibrating The Analog Output; Figure 3-29. Analog Output Auto Calibration Page - Teledyne T750 User Manual

Analog Output Voltage Range Configuration

In its standard configuration, the analog outputs are set to output 0 – 5 VDC signals. Several
other output ranges are available (see Table 3-3). Each range is usable from -5% to + 5%
of the rated span.

Table 3-3. Analog Output Voltage Range Min/Max

RANGE SPAN
0-100 mVDC
0-1 VDC
0-5 VDC
0-10 VDC
The default offset for all ranges is 0 VDC.

Adding a Recorder Offset to the Analog Output

Some analog signal recorders require that the zero signal be significantly different from the
baseline of the recorder in order to record slightly negative readings from noise around the
zero point. This can be achieved in the calibrator by defining a zero offset, a small voltage
(e.g., 10% of span).

Calibrating the Analog Output

When the Analog Output is configured/reconfigured, it must be calibrated. Navigate to the
analog output in the Setup>Analog Outputs>Analog Output Cal menu. The analog
output was configured in the Analog Output Cfg menu (Section 3.3.9) to be calibrated
automatically (AUTO) or adjusted manually (MANUAL).
AUTO
The Signal Out field will show whether the Analog Output signal was set for automatic
calibration, press the Start button. 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.
78
MINIMUM OUTPUT
-5 mVDC
-0.05 VDC
-0.25 VDC
-0.5 VDC

Figure 3-29. Analog Output Auto Calibration Page

MAXIMUM OUTPUT
105 mVDC
1.05 VDC
5.25 VDC
10.5 VDC
083730750B DCN8606