TD 91684GB
2003-01-08 / Rev.C
Installation Guide
T942C- and T942C/2 Central Unit
1
1 Central Unit T942C
Figure 1. Central Unit T942C.
1.1 General
T942C is used in On Site Paging System (OSP), system 5000, Personal Security System
(PSS), Cordless Telephone System CTS 900 and in Ascom 9d System. T942C controls all
communication on the system bus and data buses. The Central Unit also generates code
to all paging transmitters and enables parallel operation of separate installations. T942C
can be converted for use as a common line equipment interface (CEI) in system 5000. All
the inputs and outputs have transient protection, and all bus connections are equipped
with chokes for increased EMC protection.
Delivery includes:
• T942C
• Modular system bus cabling
Optional equipment that may be required:
• A PC can be connected to 8-pin modular connector J09 on the T942C for RS232C
communication. Adapters can be ordered from ATAB for 9-pin and 25-pin D-sub
connectors. See 1.3.13 Connection of PC on page 15.
Tools, etc., required:
• Screwdriver
• Cutting pliers
• Screws for installation
• Multi-meter
Supply voltage: 12.5 V DC
±
10%
Current consumption: Max 1A
