This is a list of models supported by this driver, the physical installation depends on the video encoder and the PTZ unit. 

Check what serial communication the video encoder and PTZ unit will support!

Supported models:
Pelco DD5-C
Pelco Esprit ES30C/ES31C
Pelco LRD41C21
Pelco LRD41C22
Pelco Spectra III
Pelco Spectra IV
Pelco Spectra Mini

Other models may be supported but this has not been verified by Axis