Measurement Computing DAC488 v.1 - Manual (Page 85)

DAC488 User’s Manual DAC488 Commands 79
S - System Defaults
TYPE System Command
SYNTAX Sn Where n = 0, 1, 2, or 3 .
S0 Restore the factory default command settings as the power on defaults.
S1 Save the current command settings as the power on defaults.
S2 Restore factory default Calibration Constants to NV-RAM.
S3 Save current Calibration Constants in NV-RAM.
S? Return the last System Defaults command executed.
DESCRIPTION
The System Defaults (Sn) command may be used to save or restore a default setting for each command. The
System Defaults command is also used to save or restore the Calibration Constants.
All Calibration Constants and a power on default setting for each command are saved in an internal Non-Volatile RAM
(NV-RAM). Once Calibration Constants have been saved in the NV-RAM, they will be used whenever the DAC is
commanded to output a voltage. The command options saved in NV-RAM will be the default settings when the unit is
powered on.
Note: Issuing an S2 or S3 command without the calibration enable switch in the depressed position will cause a
Calibration Write Protected (E4) error. After calibration, the S3 command would be used to save the new
Calibration Constants in the NV-RAM.
EXAMPLE
PRINT#1,"CLEAR09" Line 1: Reset the DAC488.
PRINT#1,"OUTPUT09;A0 C1
O1 P2 Y1 X"
Line 2: Configure port 2 as follows: Autorange disabled, Indirect Control mode,
Output Format in decimal bits, line feed (LF) terminator.
PRINT#1,"OUTPUT09;S1X" Line 3: Save this configuration as the power on default configuration for port 2.