Pulnix TM-250 Instrukcja Obsługi Pobierz pdf (Strona 18)

Page 12

Operation

TM-250 Miniature CCD Camera

3.2 External Sync

The TM-250 can accept external sync from an external sync generator or frame grabber. Its input

speciﬁcations are:

Internal/External auto switch

fH=15.734 KHz ±5%, fV=59.95 Hz ±5%

Note: The TM-250 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 HD = ~64.0 µs). If the imaging system is capable of

automatically detecting the start of video (within a few HD), then no problem will exist. If

it is not capable of automatically detecting the start of video, you may need to reconﬁgure

the video capturing sequence to delay video acquisition of 1HD.

FIGURE 3. Input Signals

3 - 5µsec

1 to 9HD

1/60

1/f(horizontal)

TTL Level

+5Volts

0 Volts

+5Volts

0 Volts

TTL Level

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 40 41

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Pulnix TM-250 Instrukcja Obsługi Strona 18