User's Manual

Part number 3B3957 R8 3
June 2005
RS485 communications
Use high-quality, low-capacitance, twisted-pair cable. Category 5 (CAT 5)
cable is suitable.
DC power
Ensure the cable size is adequate for correct operation of the IDT.
Mounting
Note: The IDT has been designed to metric specifications, therefore any
imperial measurements provided are approximate only.
The IDT is designed to mount on any solid, flat surface. The card read range is
reduced when the IDT is mounted on or near metal surfaces.
Height
The recommended mounting height for the IDT is 1100 mm, measured from
the centre of the facia to the floor.
Check your local regulations for any variations to this recommended height.
Installation
1. Fit the base as described in Fastening the base to the mounting surface
(on page 4).
2. Join the building cable to the connector tail and fit the Interconnect PCB as
described in Joining the cable (on page 4).
3. Set the IDT address as described in Setting the unit address (on page 5).
4. Fit the facia as described in Fitting the facia (on page 6).