JAI CV-A50, CV-A60 Internal Switch and Jumper Settings, 1 HD/VD input-output selection

CV-A50 / CV-A60

7.4. Internal Switch and Jumper Settings.

7.4.1 HD/VD input-output selection

In the default setting the camera will accept external HD/VD signals on pins 6 and 7 of the 12 pin Hirose connector. The composite video signal from the camera will be synchronized to an external HD/VD source connected to the camera. TTL level (between 2 and 5 V).

To set up the camera to output HD/VD signals on pins 6 and 7 on the Hirose connector follow these steps. See fig. 29.

1.Switch off the power to the camera.

2.Remove the camera cover, by removing the 5 screws.

3.Locate switches SW1-1 and SW1-2 on the PK8277 circuit board, and set both in the ON position.

Note: The HD/VD output source is 75 Ohm.

7.4.2. Selecting termination of HD/VD input signals

The default setting of the HD/VD input is high impedance TTL. The camera expects to get a signal that swings between 2 and 5 volts. This setting allows the largest number of camera to be synchronized from a single HD/VD source (such as another camera or a frame grabber).

Under certain circumstances it may be necessary to terminate the HD/VD input, in order to match the impedance of the signal source, to eliminate over/undershoot or standing waves in the signal.

To change the HD/VD input to 75Ohm terminated, follow these steps

1.Switch off the power to the camera.

2.Remove the camera cover, by removing the 6 screws.

3.Locate switches SW2-1 and SW2-2 on the PK8277 circuit board, and set the according both in the ON position.

Int. HD/VD out	75 Ω terminated
Ext. HD/VD in	TTL
(factory set)	(factory set)

Fig. 29. HD/VD switch positions on PK8277 board.

- 21 -