User Manual

AS4000 Central Terminal
Installation and Commissioning
DLP 004
605-0000-452
Issue 1.3dr Date 7/02/00
Page 4 of 6
2. Alarm Unit (Type 55B) External Connections
Run and terminate alarm cables from the AU55B in the combiner shelf alarm scheme on
the 25 way D-Type connector as shown in Figure 15. Connect the -48V/24V alarm
supply to the alarm supply fuse box using 1.0mm cable and terminate on the D-type
connector.
If a visual indication at the rack is all that is required, the alarm unit can be plugged
connected from the D-type connector on the AU55B to P9 in the Fuse and alarm panel.
To
Next
Rack
1 2 3 4 9 11
- 48V0V Return
5
6
Major (Prompt)
Minor (Deferred)
Receive Attention
To AU 55b in
DA Rack
To
Alarm
Fuse Box
AS4000 Alarm Unit Connections
Figure 15. AS4000 Alarm Unit Connections
The 10 way alarm ribbon from the AU55B should be connected to P7 on the alarm
panel.
3. 2Mbit/s Cabling
From the site survey, confirm the location of the Digital Distribution Frame (DDF) if a
DDF is to be used or the Backhaul/Access Concentrator if the 2Mbit/s feeds are fed
direct to the equipment. The length of 2Mbit/s feeds should not exceed 250 metres
Note: This must be a SELV port of an EN 60950 approved product.
SITESPAN 2 SITESPAN 1
SLOT 5 SLOT 9
E1IN
E1IN
E1OUT E1OUT
CABINET RACK CONTROL 55B ALARM
COMBINER
BASEBAND
DOOR LED
RF CAL
-48V FAN AUX5 AUX9
SCAUX
SCLAT
JTAG
-48VB
-48VA
BATTPOS
COMBINER BASEBAND
E5
E5
Figure 16. Shelf Interface Connections.