INSTALLATION GUIDE
9dLD Locator, Version D
7
TD 92775EN / 14 December 2020 / Ver. D
5.
Mount Antennas
The 9dLD box supports up to four antennas. It can be fitted with one internal antenna and up to
three external antennas, or, if no internal antenna is used, up to four external antennas. The
choice depends upon the situation and number of location codes. See
DECT Location Version
C and D, Function Description, TD 92629EN
for a more detailed discussion on this topic.
5.1
Mount Internal Antenna
1 Open the plastic case of the 9dLD box by removing the four screws on the cover plate.
2 Remove the screws on the two spacers.
3 Connect antenna connector in the box to the antenna with the antenna cable. Tighten nuts
relatively hard for good electrical connection.
4 Fit antenna on the spacers and fasten it with the two screws again.
Discard the supplied cover lid and dedicated screws delivered with the antenna.
5 Refit 9dLD box cover plate with four screws, observing that reed relay and tamper
protection magnet are placed opposite each other.
Notes: 1) Antennas, and antenna cables with male SMA connectors, are accessories.
2) It is never recommended to mix internal and external antennas in one 9dLD
box. The cables have different damping which could cause unbalance in the
coverage.
3) Because of signal leakage from the 9dLD box it is recommended to only
use external antennas when two location IDs are used. Ideally the 9dLD
should be placed some distance away from the antennas. It can for example,
when the antennas are placed in the handsets carrying height, be placed in an
under-roofing. Refer to
DECT Location Version C and D, Function Description,
TD 92629EN
.
4) When only one location ID is used it must be configured for location 1, which
means that the antenna(s) must be connected to SMA connectors 1 (A/B). The
9dLD uses these antennas when searching for system.
NOTE: Normally the antenna shall be mounted horizontal, see marking on antenna.
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
