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Pelco Manual C554M-A (5/98) 7
2.0 DESCRIPTION
The Coaxitron
®
receiver/driver operates on the principle of transferring control in-
formation and video on the same line. A train of pulses containing control informa-
tion is superimposed on the video at VIS time. This transmitted train of control infor-
mation can originate from a variety of Pelco controllers, including the CM6700,
CM7500, CM8500, CM9500, CM9760-CXT, MPT9000, and MPT9008.
Depending on receiver/driver options, wiring and controller capabilities, the pos-
sible range of control information that can be transferred, acted upon and aug-
mented by the receiver is covered by the following list of functions:
1. Pan Left 9. Iris Open
2. Pan Right 10. Iris Close
3. Tilt Up 11. Camera Power On/Off
4. Tilt Down 12. Auto/Manual Scan
5. Zoom In 13. AUX 1 (Manual Iris)
6. Zoom Out 14. AUX 2 (Auto Iris)
7. Focus Near 15. AUX 3
8. Focus Far 16. AUX 4
When used with a CX900TLC Local Test Board Plug-in Module, manual control of
functions can be performed from the receiver location for local operation and to
check for the valid reception of a given command from the controller.
Pan/tilt, zoom lens and camera power control is included on the main (video and
logic) receiver board, which eliminates malfunctions due to improper wiring or bro-
ken wires.
The receiver/driver includes the following standard functions on a single circuit board
and chassis with integral power supply:
1. Pan/tilt (24 VAC or 120 VAC as ordered from the factory)
2. Zoom lens – Zoom, iris, and focus with adjustable speed (speed not remote
controllable)
3. Camera power (24 VAC or 120 VAC as ordered from the factory)
4. An open collector transistor output (latching) intended for use in manual over-
ride of an automatic iris control