Dimetra EBTS Site Controller » History » Revision 5
Revision 4 (laforge, 02/19/2016 10:52 PM) → Revision 5/12 (laforge, 02/19/2016 10:52 PM)
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= Integrated Site Controller (CLN1480A) =
This is a unit that interfaces up to 8 Base Radios with the core network of the Dimetra TETRA network (SwMI).
Hardware-wise, it is a PowerPC based system, looking very much like an old-fashioned PC mainboard with both ISA and PCI slots.
The mainboard houses the PowerPC CPU and it has slots for RAM.
There are some extension cards plugged into the system:
* Clock generation card (ISA, full length).
* has an integrated GPS receiver, to which you attach a GPS antenna
* generates the reference 5MHz clock distributed over Coaxial cable to the Base Radios
* Ethernet Card using DEC tulip chipset (PCI)
* This card is what talks to the Base Radios (BR) via 10-Base-2
* Unknown card with RJ-45 jack (REDUND) on the back. Might be E1
There are further inputs and outputs on the system:
* A DB-15 jack for X.21 synchronous serial backhaul (2048Mbps)
* FIXME
* A RS-232 serial port for local configuration
== Images ==
=== Site Controller top view (lid removed) ===
[[Image(tetra_site_controller_open.jpg, 66%)]]
=== PCI Card with lots of Lucent chips ===
[[Image(tetra_site_controller_lucent_pcb_top.jpg, 50%)]] 33%)]]
[[Image(tetra_site_controller_lucent_pcb_bottom.jpg, 50%)]] 33%)]]
