Bosch/Philips
                 RS232/RS485 connections.


         Video Encoder                 Bosch/Philips PTZ unit

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RS232 serial                           Philips CSI
communication                          Autodome G3A

                   Pin                 Pin
RS232 9-pin    GND  5 ----------------  4 GND
DSUB male       RD  2 ----------------  5 TXD
connector       TD  3 ----------------  6 RXD

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RS232 serial                           Bosch
communication                          Autodome VG4-300 (RS232)

                                       Pin
                             (Biphase)  1 C- -- 110 ohm --I
                             (not used) 2 C+ -------------I
                   Pin
RS232 9-pin    GND  5 ----------------  6 GND
DSUB male       RD  2 ----------------  5 TXD
connector       TD  3 ----------------  4 RXD

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RS485 serial                           Bosch
communication                          Autodome VG4-300 (RS485)

                                       Pin
                             (Biphase)  1 C-
                             (not used) 2 C+

                   Pin
RS485               A+ ---------------  4 RXD -- 110 ohm --I
connector           B- ---------------  5 TXD -------------I

                                        (110 ohm termination
                                         on the last PTZ unit.)

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