Section 8: Triggering
2470 High Voltage SourceMeter Instrument Reference Manual
8-18
2470-901-01 Rev. A /
May
2019
To use the line only as a trigger output:
1.
Reset the line.
2.
Set the output trigger logic type to negative (falling edge) or positive (rising edge).
When you set the logic type to negative, the instrument automatically sets the line high. Setting the
logic type to positive automatically sets the line low.
Do not set the input trigger edge detection type after setting the positive logic type. This will set the
line high, which will prevent the line from operating correctly as a trigger output.
To use the line as both a trigger input and a trigger output (falling edge triggers only):
1.
Reset the line.
2.
Set the output trigger logic type to negative (falling edge).
3.
Set the input trigger edge detection type to falling, rising, or either.
You can use these settings for triggering applications that use Keithley Instrument products
featuring Trigger Link.
Output
When you place a line in output mode, it is automatically set high or low depending on the output
logic setting. Use the negative logic setting when you want to generate a falling edge trigger. Use the
positive logic setting when you want to generate a rising edge trigger. You cannot detect incoming
triggers on a line configured as a trigger output.
Input
When you place a line in input mode, it is automatically set high to allow it to respond to and detect
externally generated triggers. Depending on the input edge detection setting, the line can detect
falling-edge triggers, rising-edge triggers, or both.
The line cannot generate an output trigger if it is set to the trigger input mode.
