User's Manual

Doc. No.
Rev.
Date
DRAFT
1.01
2012-01-27
Damm Cellular Systems A/S, Denmark
TetraFlex
®
7.5 Manual - SB421
TetraFlex® 7.5 Manual 1-11
When delivered, the temperature sensor cable is terminated with a 4-pol modular connector.
Please cut the connector and mount the wires in the LSA block of the LAN/WAN connection
module according to this:
SB421 Temperature
J8A Sensor Cable
Pin# Function Color
1 Gnd. Yellow
2 +5V Brown
3 /Data Red
4 Data Blue
Figure 1-9: Temperature sensor connection
Note: If an internal battery kit is mounted, pull out the battery connector J40 for the internal
battery and insert the free connector for the external battery into J40 instead.
If no internal battery kit is present, the external battery plug is inserted from factory.
Note: Please observe polarity of the external battery leads.
Serious damage to the SB421 will occur if not polarized correctly.
Also switch from internal temperature sensor to external temperature sensor using SW 171
on the interconnection board (top right hand corner)
1.1.5 HW change for redundant SB421 / 3 and 4 carrier operation
NOTE: Operation with 3 and/or 4 carriers and/or redundant BSC require a change to the HW
of both SB421 as well as a HW change of carrier 2 and 4 if BS421 HW version is 1. If BS421
HW version is 2, these settings can be made via the TetraOM application. (Please see the
SB421 installation section for further details)
This change is required to ensure correct BSC handover and synchronization of the carriers
A 3/4 carrier system and / or redundant SB421 is marked with a label close to the serial
number label at the outside bottom of the SB421:
REDUNDANT SB 421
3-4 CARRIER SYSTEM
(SYNCHRONIZATION OPTION 2)
The interconnection board on the connector for the BS421 is marked with a label:
SYNCHRONIZATION OPTION 2
when delivered from factory.
If the hardware change is made in the field, i.e. outside DAMM facilities, it must be ensured
that appropriate marking of the SB421 is performed.