Siemens TC12 Installation, Commissioning And Maintenance Handbook page 23

Unused 6U positions are fitted with a 6U blanking panel
2.2.2 PC
The TC12 PC is not like most PCs in that it does not have a motherboard;
instead the processor card and the other cards are plugged into a back plane.
There are 2 types of TC12 PC which may be used and are described below:
2.2.2.1 Rack Mount PC
The Rack Mount PC is a convention desktop style of PC which sits on a shelf in
the TC12 cabinet. It has a conventional keyboard attached to it and needs a
separate monitor for software installation and any checking of its operation.
2.2.2.2 Flat Panel PC
The Flat Panel PC may be used in situations where a compact TC12 Instation is
required. The PC is normally mounted in a 19" rack and has an integrated LCD
screen and membrane keyboard.
2.2.2.3 TC12 PC Operating System
The TC12 PC software uses DOS as its operating system. The TC12 PC
normally comes with DOS pre-installed. If, however, if DOS is not installed then
the PC manufacturer's set up instructions should be followed.
When initialising the PC, check the working voltage range of the PC is
suitable for the mains supply that is going to be used. Follow the
manufacturer's instructions for any switches/links etc., which need to be
changed in order for the PC to work with the intended mains supply.
2.2.2.4 TC12 PC Configurations
The following combinations of TC12 PC may be used:
2.2.2.4.1 Rack Mount Data Transmission PC
A rack mount PC which is to be used for data transmission would normally have
the following, additional, cards installed in it.
• Ethernet Card (Etherlink 3) (not needed if processor card has built-in
Ethernet)
• Digi I/O Card
• Intelligent Modem Driver Card (IMD) either Xi or Xe (1 per ITU rack)
666/HE/43100/000
TC12 Installation, Commissioning & Maintenance Handbook
SAFETY NOTE!
Page 13
(561/4/20899/022)
Issue 10