JAI TMC-775, Руководство пользователя

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TMC-775/TMC-773
18 Software Introduction & Installation
3 Functions and Operations
Apart from the standard continuous operation, the TMC-775/TMC-773 feature three external asynchronous trigger
modes (edge pre-select, pulse width controlled and Async RESET).
3.1 Input of Ext HD/VD Signals
In the default setting the camera will accept external HD/VD signals on pin 13 and 14 of the 15 pin connector. If
external HD/VD is applied, the camera will synchronize to it. If no external sync signals are applied, the camera
will operate with its internal x-tal controlled sync. The time requirements to the relation between VD and HD are
shown in Fig. 6.
To use this mode:
Input: Ext. VD in or int. VD out on pin 14 on 15 pin connector.
Ext. HD in or int. HD out on pin 13 on 15 pin connector.
Note: External sync system should follow the camera scanning system.
3.1.1 External Sync
The TMC-775/TMC-773 can accept external sync from an external sync generator or frame grabber. Input
specifications:
Internal/External auto switch
fH+15.734 KHz ± 5%, fV +59.95 Hz ± 5%
Min signal amplitude 3.5 Vp-p
Note: The TMC-775/TMC-773 have a one (1) horizontal line delay between the input VD signal and the output
video. If external vertical drive (VD) is applied to the camera, it may cause the video output to be
delayed 1 HD (1 H = ~64.0 µ s). If the imaging system is capable of automatically detecting the start of
video (within a few HD), then no problem will exist. Otherwise, reconfigure the video capturing
sequence to delay video acquisition of 1H.
Figure 6. Input Signals