ALLGON System AB AR Repeaters & OMT Introduction
Introduction
Allgon repeaters are used to fill out u ncovered areas in cellular mobile
systems, such as base station fringe areas, road tunnels, busirEss and
industrial buildings, etc.
A repeater receives signals from a base station, amplifies
signals to mobile stations. Also it receives, amp lifies
in the opposite direction. Both directions
To be able to receive and transmit sign als in both directions, the rep eater is
are served simultaneously.
and retransmits the
and retransmits signals
connected to a donor antenna directed towards the base station and to a
service antenna directed towards the area to be covered.
Operation of the repeaters is performed using a desktop or notebook an d the
Allgon
locally or remotely
There is also an Allgon OMC (Operation & Maintenance Center), which is
intended to be used to
The repeaters and the
described in the
OMT (Operation & Maintenance Terminal) which communicate,
via modem, with the repeaters.
run many Allgon AR repeaters.
OMIT is described in this manual. The OMC is
Advanced Repeater 0MG, User’s Manual.
User’s Manua~ VD2O1 17/EN Rev. 4B 19c8-03 2-1
Figure 2-1. Allgon AR Repeater
Installation AR Repeaters & OMT ALLGON
System AB
Installing 24
Volt or 48 Volt DC Power Supply Unit
a 24 Volt or 48 Volt DC
2. Disconnect the two connectors on the PSU.
PSU as follows:
1. Switch the repeater off and remove the mains plug from the PSU, if
not already done (1 in Figure 3-9).
You can replace an AC PSU with
3. Loosen the three fixing screws u sing a 5mm Allen key.
4. Remove the PSU from the repeater.
5. Mount the 24/48 Volt DC PSU with the three fixing screws (3).
6. Connect the PSU to the
7. Connect the DC power cable. The supplied cable has a radiation limiter which is a requirement for
the 24/48 Volt unit to be type
approved. The cable shall be connected as follows:
DIA board (2).
The
+ pole shall be connected to one of the left terminals in the PSU
connector with the BROWN part of the DC cable.
The
— pole shall be connected to on e of the right terminals in the
PSU connector with th e BLUE part of the DC cable.
8. When the connection is completed, switch the repeater on .
9. Make sure the yellow LED is lit on the PSU.
The DC Power Supply Unit must be galvanically separated from the
mains supply with an equipment fulfilling the 1EC65 safety
requirements.
3 - 14 Rev. 48 W98-03 User’s Manual
VD2O1 171EN
Figure 3-9. Replacing the PSU
ALLGON System AB
AR Repeaters & OMT PC Controlling
Band Selective Type
e5ndteIe~tiVf~ repeftter ~‘
Figure 5-20. Band selective configuration
The left-hand part of the configuration window contains downlink
information (BSA board #1 and PA board #1 located to the left in the cabinet
or cover).
The right-hand part of the configuration window contains uplink information
(BSA board #2 and PA board #2 located to the right in the cabinet or cover).
The downmost line indicates current band width and the band width status
(fixed or adjustable).
Fixed band width operation
For repeaters equipped with fixed band width BSA boards, the following
three fields are changeable:
Downlink: Gain
Uplink: Set low band edge Gain
The values in the remaining fields are automatically calculated from the band
width and the uplink/downlink frequency difference.
Adjustable band width operation
For repeaters equipped with adjustable band width BSA boards, the uplink
‘Set high band edge’ field is also available and changeable.
Users Manual VD2O1 1 7/EN Rev. 4B 1998-03 5 - 39
PC Controlling AR Repeaters & OMT ALLGON
System AB
Field descriptions:
Bandselective repeater
The band selective repeater, or the band selective part of a combin ed
repeater,
The PA boards and the AGC (Automatic Gain Control) are turned off
when the band selective repeater is switched off.
‘Downlink’ section
can be turned on/off by clicking this box.
Low band edge
Displays the downlink low band edge related to the uplink low band edge.
The difference is depending on the system duplex spacing.
High band edge
The downlink high band edge related to the band width.
Gain
The maximum downlink gain, i.e. the total gain from antenna port to antenna port.
Setting range:
‘UpIink’ section
45dB to 90dB
Set low band edge
The lower band edge for the uplink signal. The band edge frequency can be increased or decreased by
clicking the arrow buttons. The frequency is changed in 12.5KHz steps. Values
can be typed into the
field as well.
Setting range for this field is depending on the system and BSA
boards.
Set high band edge
For fixed BSA boards, this field displays the uplink high band edge
related to the band width. This band edge cannot be changed solely.
For adjustable BSA boards, this field is changeable and affects thus
the uplink high band edge and thereby the band width.
Gain
The maximum uplink gain, i.e. the total gain from antenna port to
antenna port.
Setting range: 45dB to 90dB
5 - 40 Rev. 4B 1998-03
ALLGON System AB
PC Controlling AR Repeaters & OMT
Main Window Button Bar
Main window button functions:
Login
- see the File menu (page 5-103).
Logout - see the File menu (page 5-103).
Exit
- see the File menu (page 5-103).
menu (page 5-113).
Configuration
Read status
Board Testpoints
Change
- see the Parameters menu (page 5-106).
- see the Status menu (page 5-108).
- see the Tests menu (page 5-109).
active repeater part - see the Hardware menu (page 5-111).
Received Repeater Alarms - see the Alarm menu (page 5-112).
Repeater
Alarm
Event Log - see the Alarm menu (page 5-112).
Reset! - see the Alarm menu (page 5-112). ___ About - see the Help
5
- 102 Rev. 4B 1998-03 Users Manual
VD2O1 17/EN
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