I’m posting this for anyone who needs to remember how to gain control of a Pelco Spectra PTZ camera using the Bosch Videojet X10 encoder. This’ll also remind me next time I have to do this…

Pelco P
Protocol camera ID = 1
2400 bps speed on camera (all dip switches are OFF) and match it on encoder
Two-wire RX- on camera to RXD on encoder and RX+ on camera to TXD on encoder

One of these days I’ll find a useful operation manual.