User Manual

Axell Wireless Limited
Technical Literature
Lincoln/Holland Upgrade Equipment
Document Number
60
-
214701HBKM
Issue No.
1
Date
29/08/2008
Page
35
of
43
7.1.9 Service Support
Advice and assistance with maintaining and servicing this system are available by contacting
Axell Wireless Ltd., see section 2.7.
NOTE
Individual modules are not intended to be repaired on site and attempts at repair will
invalidate active warranties. Company policy is that individual modules should be repaired
by replacement. Axell Wireless Ltd. maintains a level of stock of most modules which can
usually be despatched at short notice to support this policy.
7.2 Tools & Test Equipment
The minimum tools and test equipment needed to successfully service this Axell Wireless product
are as follows:-
Spectrum analyser 100kHz to 2GHz (Dynamic range = 90dB).
Signal Generator 30MHz to 2GHz (-120dBm to 0dBm o/p level).
Attenuator 20dB, 10W, DC-2GHz, (N male – N female).
Test Antenna Yagi or dipole for operating frequency.
Optical Power Meter 1300 – 1560nM (-40 - +10dB)
Digital multi-meter Universal Volt-Ohm-Amp meter.
Test cable x 2
N male
–
N male, 2M long RG214.
Test cable x 2 SMA male – N male, 1m long RG223.
Hand tools Philips #1&2 tip screwdriver.
3mm flat bladed screwdriver.
SMA spanner and torque setter.
7.3 Care of Modules
7.3.1 General Comments
Many of the active modules contain semiconductor devices utilising MOS technology, which can be
damaged by electrostatic discharge. Correct handling of such modules is mandatory to ensure their
long-term reliability.
To prevent damage to a module, it must be withdrawn and inserted with care. The module may have
connectors on its underside, which might not be visible to the service operative.
7.3.2 Module Removal (LNAs, general procedure):
The following general instructions should be followed to remove a module:
1 Remove power to the unit
2 Remove all visible connectors (RF, DC & alarm)
3 Release module retaining screws.
4 Slowly but firmly, pull the module straight out of its position. Take care not to twist/turn the
module during withdrawal. (When the module is loose, care may be needed, as there may be
concealed connections underneath).