Mount External Antennas; Tamper Monitoring Of External Antennas - ASCOM 9dLD Installation Manual

INSTALLATION GUIDE
9dLD Locator, Version D

5.2 Mount External Antennas

Notes: 1) See
2) It is highly recommended that cables are fed through protective conduits.
3) Normally the antenna shall be mounted horizontal, see marking on antenna.
Up to four external antennas can be connected to the 9dLD box, two antennas for each
location ID. Antennas fit into standard electric lightswitch housings for flush mounting. It is
recommended to mount the 9dLD external antennas preferably no more than 10 m of cable
away from 9dLD box, due to attenuation in antenna cables and connectors.
Mounting height is recommended to be at the same height as the handset is carried, normally
around 1.5 m (1.2 to 1.8 m). External antennas, one or two for one location ID, or up to four for
two location IDs, are often mounted on each side of a doorway or a passage. Make sure you
have suitable lightswitch housings for flush mounting where you want the antennas.
1 Connect antenna with antenna cable of suitable length (3, 5, 7 or 10 m).
2 Fit antenna inside lightswitch housing.
NOTE: The antenna must be placed with the squared metal area facing towards the room,
see Figure 6. Switches for setting of the RSSI Threshold value on the 9dLD
3 Fit cover lid with two supplied screws.
4 Feed antenna cable through protective conduits to 9dLD box, where cable is fed through
cable entry.
Tighten all antenna cable connectors relatively hard for good electrical connection.
5.2.1

Tamper Monitoring of External Antennas

The 9dLD Locator version D supports tamper monitoring of external antennas.
NOTE: Jumpers may be mounted at delivery. Remove them to disable monitoring,
or check their placing if monitoring is to be used.
To enable tamper monitoring of external antennas:
1 Mount a jumper (1A–1B, 2A–2B) for each antenna to be monitored.
2 Mount a jumper (X) for short circuit detection and/or a jumper (Y) for open circuit detection.
The detection setting is dependent on the antenna design as described on the following
table.
Antenna
Up until 9dLDA1 revision 1B,
circuit board revision 4044, 4044A–D.
From 9dLDA1 revision 2A,
circuit board revision 4044E and later.
Huber+Suhner (art. no. 22649572)
Modified Huber+Suhner (art. no. 22649572)
See
TD 92775EN / 14 December 2020 / Ver. D
3. Cabling on page 4 about external antenna cable entries in 9dLD box.
A.1.2 Modify the antenna
Detection
Open circuit only
Open circuit and/or short circuit
Short circuit only
Open circuit and/or short circuit
on page 19.
on page 13.
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