AVE Video Serial Synchronous ATM Interface VSSI-PRO - Manual (Page 10)

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VSSI-PRO VIDEO CONNECTION
The video input to the VSSI-Pro is a standard BNC connector terminated at 75 ohm.
After completing the interface installation, connect the video input source to the video input BNC on the rear of the
VSSI-Pro. The BNC video output connects to the video system (DVR, VCR, Quad, switcher, Multiplexer, or monitor).
VSSI-PRO CONNECTIONS
The video output from the VSSI-Pro is 1V P-P into a 75 ohm load or unterminated load. Most monitors or televisions with
direct video inputs are terminated with a 75 ohm load.
Included with the VSSI-Pro is a 9 VDC @ 300mA UL/CSA power supply which must be plugged into the power input on
the VSSI-Pro's rear panel.
ATM TO VSSI-PRO INSTALLATION
Locate the connector on the ATM’s modem and loosen the 2 retaining screws, then quickly plug in the appropriate DB-
25 connector of the triport into the modem. Next plug the modem cable into the other DB-25 connector of the triport, and
plug the DB-9 connector into the VSSI-Pro.
CONNECTING THE VSSI-PRO
Figure 2: VSSI-Pro Connections
VSSI-Pro VIDEO SERIAL ATM INTERFACE
NOTE
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Make sure no one is operating the ATM when you disconnect the DB-25 connector.
IMPORTANT
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The input video level must be 1V P-P. If this level is not maintained within +/- 20%, the
VSSI-Pro will have difficulty locking the character display over the input video source. If
the display is jumpy or tears this is a common symptom of input video level that is too
high or too low.