JAI TM-770, Руководство пользователя

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TM-77X Series
18 Software Introduction & Installation
3 Functions and Operations
Apart from the standard continuous operation, the TM-77X features 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 TM-77X 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 TM-77X has 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