Distance Between Antenna Readers From Different Terminals, Controllers Or Receivers - impro XTT901 Installation Manual

Cable Specifications
The cable specifications should be similar to the following:
Conductor Resistance:
Capacitance, Core to Earth:
Capacitance, Core to Core:
Distance between Antenna Readers from the SAME Terminal, Controller
or Receiver
To avoid mutual interference, install the Antenna Readers no closer than 150 mm (6 in)
apart.
Distance between Antenna Readers from DIFFERENT Terminals,
Controllers or Receivers
To avoid mutual interference, install the Antenna Readers no closer than 500 mm
(20 in) apart.
Mounting the Antenna Readers
CAUTION: Make certain that you mount the Antenna Reader on a vibration-free
surface.
CAUTION: You may install the AMR Antenna Metal Reader (XTT951-1-0-GB-XX,
HRL903-1-0-GB-XX) and the AMK Antenna Metal Keypad Reader
(XTT952-1-0-GB-XX, HRL904-1-0-GB-XX) in an open environment.
To do this, apply a slanted strip of general-purpose, black, silicone
based sealant between the mounting surface and the Backing Plate,
above the cable entry point. An open environment refers to any
environment affected by elements like rain or water.
CAUTION: Once clipped together, separation of the Backing Plate and Front
Cover of the Impro MMA (XTT901, HRL900) is likely to cause
damage to the Antenna Reader.
Select the mounting position of the Antenna Reader, considering accessibility, routing
of wires and visibility of the externally visible LED.
XTT901 to XTT905, HRL900 to HRL 905 XTT907, XTT908, XTT950, XTT951
and XTT952
Secure the Antenna Reader to the mounting surface, using suitable screws and wall
plugs, nuts and bolts, rivets or double-sided adhesive tape.
NOTE: The Impro DPA is designed for mounting in a user supplied enclosure. The
Reader has 4 mounting holes, drilled to 4 mm in diameter. The mounting
holes accommodate M3 bolts and nuts.
XTT301-0-0-GB-20
< 2 ohms.
< 160 pF/m.
< 100 pF/m.
Blank Space
March 2019 Page 4