Measurement Computing DAC488 v.1 - Manual (Page 73)

DAC488 User’s Manual DAC488 Commands 67
G - GET Trigger Mask
TYPE System Command
SYNTAX Gmask Sets bits in the GET Trigger Mask that specify which ports will be triggered upon
receipt of a bus GET command. The mask bits are as follows (decimal values
are shown in parenthesis):
•
Bit 1 = Enable GET trigger on DAC port 1. (decimal 1)
•
Bit 2 = Enable GET trigger on DAC port 2. (decimal 2)
• Bit 3 = Enable GET trigger on DAC port 3. (decimal 4) (DAC488/4 only)
• Bit 4 = Enable GET trigger on DAC port 4. (decimal 8) (DAC488/4 only)
G-mask Clears the specified bits in the GET Trigger Mask.
G0 Clears all bits in the GET Trigger Mask.
G? Returns current GET Trigger Mask.
DESCRIPTION
The GET Trigger Mask command is used to mask or unmask the GET trigger to allow DAC port triggering upon
receipt of an IEEE Group Execute Trigger (GET) from the IEEE bus. One or more DAC ports may be masked or
unmasked using this command.
Note: The default mask value is 0.
EXAMPLE
PRINT#1,"CLEAR09" Line 1: Reset the DAC488.
PRINT#1,"OUTPUT09;C1 G8 P4
A0 R2 V3 X"
Line 2: Select Indirect Control mode, enable port 4 to trigger on a GET,
select Port 4, disable autoranging, select 5 volt range, output 3 volts.
PRINT#1,"TRIGGER" Line 3: Trigger the DAC. DAC488 will output 3 volts on port 4.