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CALRAD RS232
ELECTRONICS
3 Position Terminal Block
819 N. Highland Ave. Los Angeles, CA 90038
Tel (323) 465-2131, Fax (323) 465-3504 Calrad Website: www.calrad.com xLobby Website: www.xlobby.com
72-135 RS485
RS232 To RS485 Adapter RS-232 to RS-485 Connector for DVR Surveillance Systems Applications. Necessary for PC Based DVR Systems to Control Pan and Tilt Cameras. This adapter is used to control Pan Tilt and Zoom functions for PTZ decoder boxes and PTZ cameras. Connects to the PC Serial port. No external power required for the converter.
Rear View
485+
GND
485-
Terminal Block Wiring 4000 ft.
RS232
Serial Port DVR
Model 72-135
+ + +
Gnd
RS232 to 458 Converter
RS485 2 Wire Hookup
PTZ Cameras
485-
RS232
Male DB9
485+
Female DB9
RS485
DVR
Interface feature: RS-232/RS-485 Standard interface compatible with EIA / TIA Working mode: asynchronous half pair work difference transmission. Transmission media: twisted pair or STP, distance up to: 1200 meters (RS-485/422), 5 meter (RS-232) Transmit speed: 300-115.2kbps.
Specifications Signal: Input / Output RS232 DB9 Female Connector / RS485 Terminal Block Transmission Media Twisted Pair or STP Transmission Speed 300~115, 2kbps Transmission Distance 4000ft / 1200m ESD (Electrostatic Discharge) Protection: ±15kV - Human Body Model Operation Temperature -13°F ~ 158°F / -25°C ~ 70°C Slew-Rate Limited for Error-Free Data Transmission Surge Protection:1,500W Allows up to 32 or 128 (you need order) Transceivers on the Bus ADDC - Auto Data Direction Control Dimensions W x H x D, 3.82” x 1.30” x 0.67” / 97mm x 33mm x 17mm
All specifications subject to change without notice.
Copyright Calrad Electronics 2011
