Multi-Tech MultiFRAD 200 Series, User Manual

Page: 9 / 85

9
Chapter 1 - Introduction and Description
Back Panel Description
All the cable connections to the MultiFRAD are made at the back panel. Four categories of cables
are used on the MultiFRAD: Ethernet, Channels, Command Port, and Trunk (RS232/V.35). The back
panel connectors are shown in Figure 1-2 and described in the following groups.
POWER
COMMAND PORT
TRUNK (RS232/V.35)
CHANNEL 2
CHANNEL 1
AUI
10BASE T
ETHERNET
Figure 1-2. Back Panel
Ethernet 10Base-T Connector
The Ethernet 10Base-T connector is used to connect the MultiFRAD to a LAN using unshielded
twisted cable. This connector is an RJ-45 jack.
Ethernet AUI Connector
The Ethernet AUI (Attachment Unit Interface) connector is used to connect the MultiFRAD to a LAN
using thickwire Ethernet cable. This connector is a 15-pin D-shell female connector.
Channels 1 and 2 Connectors
The two Channel connectors are used to connect data devices to the MultiFRAD. A data device can
be a synchronous device such as a multiplexer or an asynchronous device such as a PC. The data
channels can be either RS232C or V.35 . If a V.35 connection is desired, then the internal shunt for
that channel must be physically moved from its default RS232 position to the V.35 position. Back-to-
back cables are supplied with the MultiFRAD to connect the RS232C data devices to the back panel
DB25 male channel connectors.
Command Port Connector
The Command Port connector is used to configure the MultiFRAD using a PC with a serial port or
terminal emulation. The Command Port connector has a DCE physical interface with a DB25 female
connector.
TRUNK (RS232/V.35) Connector
The RS232/V.35 trunk connector is used to connect the MultiFRAD to a Frame Relay Network. The
trunk connection is to a synchronous communications device such as a modem, DSU, or ISDN. This
connection can be either RS232C or V.35. If the connection is V.35, then the shunt for that link must
be moved from the default RS232 position to the V.35 position. This connector is a DB25 male
connector.
Power Connector
The Power connector is used to connect the external power supply to the MultiFRAD. The Power
connector is a 6-pin circular DIN connector. A separate power cord connects the power supply to a
live AC grounded outlet.