Measurement Computing DAC488 v.1 - Manual (Page 75)

DAC488 User’s Manual DAC488 Commands 69
I - Interval
TYPE Port Command
SYNTAX Ival Specifies time interval used with the Waveform Control mode, where val is the
time value between 1 and 65535 where 1 count = 1 msec.
I? Returns the current interval.
DESCRIPTION
The Interval command specifies the time interval between each voltage value that is output when in the Waveform
Control mode (C3). The frequency of the output waveform may be controlled by selecting the proper interval based on
the number of voltage points per cycle.
Note: The default value for val is 1000 milliseconds, or 1 second.
EXAMPLE
PRINT#1,"CLEAR09" Line 1: Reset the DAC488.
PRINT#1,"OUTPUT09;C3
P1 F0,100 G1 N0 L0
I40 X"
Line 2: Select Waveform Control mode, select port 1, define a buffer with the first
location=0 and the number of locations=100, enable port 1 to trigger on GET,
set number of cycles to continuous, set location pointer back to 0 (first location
in the buffer), set the time interval between points to 40 milliseconds.
PRINT#1,"TRIGGER" Line 3: Trigger the DAC488. A voltage value will be output at port 1 every 40
milliseconds.