Network Wiring Requirements - Tynetec Advent xt Installation Manual

4. NETWORK WIRING REQUIREMENTS
A basic Advent xt system requires a minimum of 4 twisted pairs common to all intercom units ‐ if public address (PA) or
door entry telephones are specified then 5 twisted pairs are required.
On new installations a 6 pair CW1308 BT spec cable is recommended. Plan the network route to minimise cable length
using the intercom units to joint the cable thereby avoiding additional joint boxes in corridors or roof areas etc. On large
installations the network should be split into two or three smaller legs to reduce the effect of voltage drop and aid future
service/fault finding. The network cable length should not exceed 1200 metres and the total number of network devices
should not exceed 255. A data repeater (P/No. ZXT340) is available for extreme cases.
STATUS
MODULE
ONSITE LOCAL REMOTE
OFFSITE OFFSITE
FAULTS EXIST
BT LINE FAULT
PRINTER
ADVENT xt
CONTROLLER
Single auxiliary devices such as the status module, manager callpoint, network receivers, etc. can be connected to the
system network wiring as shown above.
To eliminate the possibility of data reflections and corruption the network should never be split into multiple legs from a
mid‐point in the wiring; small groups of intercoms spurred off at any point should also be avoided.
ADVENT xt
CONTROLLER
If an existing site wiring network has spurs of intercoms they should either be integrated into the main loop or isolated and
connected back separately to the controller as additional legs.
ADVENT xt
CONTROLLER
NEW LEG
Detailed site plans and existing wiring details are imperative before designing an installation.
Doc No. FM0410 issue M‐1 Page 8
MANAGER
CALLPOINT

CUT
CUT
NETWORK
RECEIVER
MANAGER

LAST
INTERCOM

