Line Trigger, Line Selection
When LineRateMode is PULSE or CONVERT, the line trigger signal originates from an external motion encoder device. In that case line trigger input port(s) must be selected.
The selection is performed in two steps:
- Determine the electrical style of the input port(s) and set LineTrigCtl accordingly. MultiCam selects the default input port(s) for the selected style.
- Optionally select one alternate choice for the input ports by setting the LineTrigLine parameter.
LineTrigCtl |
Description |
Targeted type of motion encoder device |
DIFF |
Single differential high-speed input port compatible with EIA/TIA-422 signaling |
Single output RS-422 compatible incremental motion encoder |
DIFF_PAIRED |
Pair of differential high-speed input ports compatible with EIA/TIA-422 signaling. Default value. |
Dual-output RS-422 compatible phase quadrature incremental motion encoder |
ISO |
Single isolated current loop input port compatible with TTL, +12V, + 24V signaling |
Single output incremental motion encoder |
ISO_PAIRED |
Pair of isolated current loop input ports compatible with TTL, +12V, + 24V signaling |
Dual-output phase quadrature incremental motion encoder |
LineTrigCtl |
Default port(s) assignment |
Alternate port assignment(s) |
DIFF |
DIN1 |
DIN2 |
DIFF_PAIRED |
DIN1 (A) + DIN2 (B) |
- |
ISO |
IIN1 |
IIN2 |
ISO_PAIRED |
IIN1 (A) + IIN2 (B) |
IIN3 (A) + IIN4 (B) |
Notes
- Dual output devices where only one output is connected are assimilated to single output devices.
- Any input port and hence any electrical style can be specified for that function.
- The default port assignment for both single signal electrical styles is different of the one of the trigger.