Aalborg SDPROCs - Manual (Page 40)

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Press any key when done with 5.000 Vdc connections. The following display will appear.
The display should show the A/D offset values between 3850 and 4095. If any value is
outside of those limits, the PC board is defective. Save the A/D offset parameters by
pressing the CAL (ENTER button). The following display will appear.
Calibration of the SDPROC is complete. Press any key to return to the Calibration Mode
Display, then press the EXIT button to return to the Main Display.
(h) RS-232 SOFTWARE INTERFACE COMMANDS
h.1 General
RS232 serial communication is supported via a standard 9 pin D-Connector on the
back panel.
To use the serial interface:
1. Connect the SDPROC to a PC or other DTE type terminal via a standard serial
cable (no null modem is required).
2. Set the communications port parameters on the terminal to 9600 baud, 8 data
bits, 2 stop bits and no parity.
3. A commercially available terminal program or a custom software program can be
used to control the SDPROC.
h.2 Commands Structure
The commands supported are listed in the table below. If the continuous data com-
mand is issued the output will appear as:
#1: XXX.X%I #2: XXX.X%E #3: XXX.X%I #4: XXX.X%E [CR] [LF]
This assumes that the data is from a four channel SDPROC with channels 1 and 3 set
to utilize the internal reference and channels 2 and 4 set to utilize an external reference
via the DB25 connector. The output from a two channel SDPROC unit with un-calibrat-
ed ADC will appear as follows:
#1: XXX.X%I *#2: X XX.X%I*[CR] [LF]