API Command Reference
Appendix A
A-26
NetScan User’s Manual
G
- Calibrate Channel Gain
TYPE
Calibration
EXECUTION
Immediate
SYNTAX
Gchan,
type
Calibrate the correction gain constants for given option card where
chan
is
the channel number such that
1
<
chan
<
max
,
where max = 128 for NetScan. The chassis is
chan = 0
.
type
is the channel type.
DESCRIPTION
Note: This command is only for advanced users who perform their own calibration. It is not necessary for
normal, everyday operation.
Active only in calibration mode, the Calibrate Channel Gain (
G
) command is used to calibrate the correction gain
constants for a given slide-in card. The channel gain value is necessary in order for the internal firmware to
accurately interpret readings coming from the input channels. This command will take the parameters
chan
and
type
and will calculate the gain based on the present channel input voltage.
Note: To achieve correct results, this command must be issued twice. First with a negative input voltage and
then with a positive input voltage.
Each time the command has been issued, the precision voltage source must remain at its value until the trigger
LED stops flashing. For further details on channel calibration, see Chapter 6.
EXAMPLE
PRINT#1, “K12345X”
‘ Enter Calibration Mode
‘ Apply negative precision voltage
PRINT#1, “G17,1"
‘ Calculate (-) gain for T/C card, card #2
‘ Wait for command to complete
‘ Apply positive precision voltage
PRINT#1, “G17,1"
‘ Calculate (+) gain for T/C card, card #2
‘ Wait for command to complete
‘ Remove precision voltage
PRINT#1, “EX”
‘ End Calibration Mode
Summary of Contents for OMB-NETSCAN 1500
Page 6: ...iv NetScan User s Manual...
Page 18: ...1 12 Configuring and Starting NetScan NetScan User s Manual Notes...
Page 38: ...3 8 General Information and Specifications NetScan User s Manual Notes...
Page 82: ...4 44 ChartView Software Reference NetScan User s Manual Notes...
Page 118: ...6 20 Calibration NetScan User s Manual...
Page 140: ...A ii NetScan User s Manual...
Page 192: ...API Command Reference Appendix A A 52 NetScan User s Manual Notes...
Page 237: ...Appendix D Registers Data Formats Queries NetScan User s Manual D 13...
Page 244: ...NetScan Program Examples Appendix E E 2 NetScan User s Manual...
Page 248: ...ASCII Code Summary Appendix F F 4 NetScan User s Manual Notes...
Page 250: ...NetScan Error Messages Appendix G G 2 NetScan User s Manual Notes...
Page 252: ...Abbreviations Appendix H H 2 NetScan User s Manual Notes...
Page 254: ...NetScan User s Manual...