NS 5.14 Firmware
2–18 4900002262 rev. B 3-23-21
AO 4-20 mA Test
The AO 4-20 mA Test parameter sets the output of the current loop when in
Mode 5 for testing and calibration purposes. The value entered represents a
percent of scale value where zero equals 4 mA and full scale equals 20 mA.
Thus, the current loop output, I, is given by
,
where R is the 4-20 mA% Test parameter value.
AO 20 mA Value
The AO 20 mA Value parameter sets the concentration (in ppmv) or dew point
temperature (in degrees Celsius or Fahrenheit), depending on whether dew
point temperature calculation and display are enabled (i.e., the Calculate Dew
Point parameter set equal to 1), corresponding to a 20 mA current loop
output.
Baud Rate
The Baud Rate parameter sets the baud rate for the customer RS-232 port.
Enter 0 for 19200, 1 for 38400, 2 for 57600, 3 for 115200 or 4 for 9600 baud.
The other settings for this port are 8 data bits, 1 stop bit, no parity and no
hardware flow control.
Make sure that the COM port used is set for the same baud rate
as the analyzer.
<SET PARAMETER MODE>
AO 4-20 mA Test
0.00000
Enter a value (%)
<SET PARAMETER MODE>
AO 20 mA Value
0.00000
ppmv or DewPoint F/C
<SET PARAMETER MODE>
Baud Rate
3
0:19 1:38 2:57 3:115
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