Omega Engineering OMB-CHARTSCAN 1400, User Manual

Page: 143 / 273

Appendix A API Commands
ChartScan User’s Manual A-17
*P
- Adjust Calibration Card Pots
TYPE Calibration
EXECUTION Immediate
SYNTAX
*Pchan
Select voltage level to be enabled for adjustment. Valid options for
chan
are:
01
- Enable -4.4 Volt Source on calibration card,
02
- 4.4 Volt
Source on calibration card, and
03
- Select 0 Volts GND.
DESCRIPTION
Note: This command is only for advanced users who perform their own calibration. It is not necessary for
normal, everyday operation.
The Adjust Calibration Card Pots (
*P
) command is used to enable the -4.4 Volt or +4.4 Volt source on the
special calibration card to allow for their adjustment. Refer to Chapter 6 for specific details. A second, diagnostic
use for this command is to program the channel sequencer to “SIT” on a specified channel without changing
address lines, accessing temperature sensors, or making/breaking relay contacts.
EXAMPLE
PRINT#1,"OUTPUT07;K12345X"
‘ Enter calibration mode
PRINT#1,"OUTPUT07;*P02X"
‘ Enable -4.4 Volt Source
‘ Adjust -4.4 Volt Source
PRINT#1,"OUTPUT07;*P01X"
‘ 4.4 Volt Source
‘ 4.4 Volt Source
PRINT#1,"OUTPUT07;EX"
‘ End calibration mode