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OPERATION

Page 10 TM-7200/TM-6200 High Resolution Digital CCD Camera

3 OPERATION

3.1 Modes of Operation

3.1.1 Shutter Operation

The TM-7200/TM-6200 has a substrate drain type shutter mechanism which provides a superb picture

at various speeds without smearing. Manual shutter speed control can be selected at 1/60, 1/125, 1/250,

1/500, 1/1000, 1/2000, 1/4000, or 1/10,000 sec. rate.

3.1.2 Asynchronous Reset with Shutter

The TM-7200/TM-6200's asynchronous reset is ﬂexible and takes external HD for phase locking.

Applying a VINIT pulse resets the camera's scanning and purging of the CCD.

When async reset pulse (VINIT) is applied to High state (+5V) with dial

switch select from1 to 9, the TM-7200/TM-6200 asynchronous camera

discharges the photo charges into the substrate drain although the camera is

still running on its sync timing and only outputs captured video. When the

negative going reset pulse is applied, the camera will latch the falling edge

to its next horizontal drive and reset vertical sync timing immediately. Then

it starts integrating for the period of shutter control set by either an external

pulse width pulse or internal shutter control. Therefore the horizontal phase

will not be interrupted. The TM-7200/TM-6200 asynchronous camera will output one ﬁeld of shuttered

video after reset.

TABLE 1. Shutter Control

Manual Mode Async Reset Mode

Set TM-7200/TM-6200 TM-7200 TM-6200

0 1/60 normal 1/60 normal 1/50

1 1/125 0.5H 1/31,000 1/31,000

2 1/250 1.5H 1/10,000 1/10,000

3 1/500 3.5H 1/4,500 1/4,500

4 1/1,000 6.5H 1/2,400 1/2,400

5 1/2,000 16.5H 1/950 1/950

6 1/4,000 32.5H 1/480 1/480

7 1/10,000 64.5H 1/245 1/245

8 N/C 128.5H 1/120 1/120

9 N/C Shutter determined by pulse width

Shutter Control Switch

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Pulnix TM-7200 Bedienerhandbuch Seite 18