Measurement Computing DAC488 v.1 - Manual (Page 64)

58 DAC488 Commands DAC488 User’s Manual
@ - Trigger On Command
TYPE System Command
SYNTAX @ Command trigger. Triggers the ports and channels specified in the Command
Trigger Mask ( T ). This command does NOT require the Execute ( X ) command
to operate.
DESCRIPTION
The Trigger command triggers the ports specified in the Command Trigger Mask (Tmask). This command does not
require the Execute (X) command and is executed immediately upon receipt. It may be used in any control mode
except the Direct Control (C0) mode (which does not require a trigger) to trigger one or more DAC ports
simultaneously.
EXAMPLE 1: Triggering a single port.
PRINT#1,"CLEAR09" Line 1: Reset the DAC488
PRINT#1,"OUTPUT09; A0 C1 T1
P1 R2 V3 X"
Line 2: Disable Autoranging, select Indirect Control mode, Enable
Port 1 for triggering on @, select Port 1, select 5 volt range, output
3 volts. (The DAC488 will not output the programmed voltage until
it receives the @.)
PRINT#1,"OUTPUT09;@" Line 3: Trigger the DAC. The DAC will output 3 volts on port 1.
EXAMPLE 2: Triggering multiple ports.
PRINT#1,"OUTPUT09;T3 P1 R2 V3
X"
Line 1: Enable Ports 1 and 2 for triggering on @, select Port 1, select
5 volt range, program port 1 for 3 volts.
PRINT#1,"OUTPUT09;P2 R3 V8 X" Line 2: Select Port 2, select 10 volt range, program port 2 for 8 volts.
PRINT#1,"OUTPUT09;@" Line 3: Trigger the DAC488. The DAC488/4 will output 3 volts on
port 1 and output 8 volts on port 2.