4. Commissioning
M0200ABA_ION-U_EU_H
_23_23
User’s Manual for ION
®
-U
Page 29
The selection of cable and antenna is an important consideration. On the one hand, a
cable with higher loss is less expensive but, on the other hand, it impairs
performance.
Notice:
The terminations on the antenna IN connectors (
7-21 IN-MAIN and
7-21 IN-
MIMO) must not be removed if the ports are not used.
Notice:
Use an appropriate torque wrench for the coupling torques:
- for N-type connectors (2 N-m / 20 in lb) with 13/16 in opening,
e. g. item no. 244379 available from the
CommScope e-catalog
- for 7/16 DIN-type (25 N-m / 19 ft lb) with 1 ¼ in opening,
e. g. item no. 244377 available from the
CommScope e-catalog
- for 4.3-10 type connectors (5 N-m, 44 in lb) with 22 mm (7/8) in
opening
Do NOT use your hands or any other tool (e.g. a pair of pliers). This might
cause damage to the connector and lead to a malfunction of the
Extension Unit.
Attention:
To minimize passive inter-modulation (PIM) distortion, attention has to be
paid to the physical condition of the connector junctions:
•
Do not use connectors that show signs of corrosion on the metal surface.
•
Prevent the ingress of water or dirt into the connector.
•
Use protective caps for the connectors when not mounted.
•
Before mounting clean the connectors with dry compressed air.
•
Before mounting clean the mating surfaces of the connector with a lint-free
alcohol-drenched cloth on a wooden or non-metallic item.
•
Attach and torque the connectors properly.
•
Avoid metallic abrasion when mounting the connectors by only screwing the
connecting nut, but not turning the whole connector.
•
Use a torque wrench to fasten the connector, see above.
•
Clean the protective caps before mounting for antenna cable replacement.
Summary of Contents for ION-U EU H 23/23
Page 1: ...ION U EU H 23 23 Extension Unit User s Manual M0200ABA ...
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