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MCDS Power Supply
The off-line switched-mode power supply, located in the center of the MCDS
shelf, provides multiple, regulated, and protected DC voltage to the MCDS
backplane. It supplies steady-state 140 watt multiple, regulated, and protected
DC voltage to the backplane from 120 V ac 60 Hz input. Each shelf requires
1.7 A from the 120 V input.
Spectron Patch Panel
This optional patch panel is wired between the interface card ports and the
computer ports to provide a convenient means of rearranging
interconnections and for maintenance diagnostics.
X.25 Gateway
The X.25 Gateway is a Packet Assembler/Disassembler (PAD) that provides
an interface between asynchronous (start/stop) ASCII devices and packet
switched equipment. The X.25 Gateway PAD supports the X.25 synchronous
interface and conforms to all applicable international standards, including
X.25, X.3, X.28, and X.29.
The X.25 Gateway PAD is 10.5 in x 16.75 in x 5.25 in (263 mm x 419 mm x
132 mm) and may be mounted in 19-inch frames or used as a stand-alone desk
top unit.
The X.25 Gateway provides a cost effective communication link between the
Meridian 1 and various X.25 networks. This allows various non-compatible
computer systems to communicate with one another.
The PAD provides for 8 or 16 asynchronous ports (RS-422 interface) that
connect to ports of an Asynchronous Interface Line Card (AILC) and two
synchronous trunk lines (RS-232-C/V.24 interface) that connect to Public
Data Networks (PDN) or to private data networks. The asynchronous ports
operate at 300, 1200, 2400, 4800, 9600, and 19200 bps. The two synchronous
trunk lines operate at 1200, 2400, 4800, 9600, and 19200 bps.
Equipment description
Meridian Data Services
Page 45 of 80
Description
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