Multi-Media Unit: Installation Instructions
5–4
5.4 Connecting a PTZ Dome
To connect the Data In port of a PTZ dome (an RS-485 connector) to one of the ports on
a Multi-Media unit (RS-232 connector), a 232/485 converter is needed. Configure a PTZ
camera using Maintenance functions in Multi View software.
Fig. 43. PTZ wiring plan
Multi supports pan, tilt, and zoom (PTZ) domes listed in table 13. A site supports only
one type of PTZ software driver at a time. This usually means that only one type of PTZ
hardware can be used at a site.
Communicate the address used by the PTZ to the Multi SA, after the installation.
5.4.1 Converter: Technical Notes
A 232/485 converter interfaces a PTZ dome/controller to the Multi-Media unit. The
converter amplifies PTZ control data for transmission over longer distances for a
maximum of 1.2 km (or 4,000 feet).
Cabling
For the cabling to connect a PTZ dome to a converter and from the converter to the
Multi-Media unit, see the converter’s documentation.
Table 12
Cabling a PTZ dome
Type Dome to converter Converter to Multi-Media unit
Javelin / Pelco RS-485 cable 25-pin male to 9-pin female to RS-232 port
- not included
Kalatel RS-485 cable 9-pin female to RS-232 port
- included with KTD-312 computer interface
5.4.2 Daisy-chaining Domes
Connecting more domes
You can connect up to 16 domes on one communication line connected to the Multi-
Media unit. Terminate the communication input(s) of the last dome in the chain. Leave
other domes un-terminated.
