Figure 10. Edge Pre-Select Eia - JAI TM-770 User Manual

3.2.2.2 Edge Pre-select Mode
The falling edge of the trigger pulse initiates the exposure. The exposure time (accumulation time) is governed
by the pre-defined shutter speed set by RS-232C. (see section 4.3.5)
The leading edge of the trigger pulse initiates the exposure. The exposure time (accumulation time) is
governed by the pre-defined shutter speed set by RS-232C.
The resulting video is output as "odd field" for EIA, and appears 9H (EIA) after the leading edge of WEN.
To use this mode:
Input:
Set MFI mode: "Trigger mode"
Set MFI Termination: "Hi Z"
Set Trigger mode: "Edge Pre-select"
Set Vertical mode: "Field"
Shutter Control: "On"
Shutter Speed: SH=1 through 260 User selectable
Figure 10.
Note: • The duration of the external trigger pulse must be greater than 1H. It is recommended to make this
longer, typically 9H.
3.2.2.3 Pulse Width Control Mode
The falling edge of the trigger pulse initiates the exposure. The exposure time (accumulation time) is governed
by duration of the trigger pulse.
The exposure time range is 1.5H to 1000H (shortest and longest pulse duration).
The resulting video is output as "odd field" for EIA and appears 9H (EIA) after the leading edge of WEN.
To use this mode:
Input:
Set MFI mode: "Trigger mode"
Set MFI Termination: "Hi Z"
Set Trigger mode: "Pulse Width Control"
Set Vertical mode: "Field"
TM-77X Series
Ext. trigger to pin 12 on 15 pin connector. Shutter exposure time
determined by line time from 1 (64μs) to 260 lines.
Edge pre-select EIA
Ext. trigger to pin 14 on 15 pin connector.
Function and Operations 21