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PRODUCT OVERVIEW
Copyright 2017 2-6 FibreXtreme Hardware Reference
2.4
Applications
SL240 cards are used in a variety of topologies for a variety of applications. The following
sections detail typical topologies used and some applications. Many other applications are
possible in these configurations.
2.4.1 LinkXchange GLX4000 Physical Layer Switch
The GLX4000 Physical Layer Switch is a managed, non-blocking, multipurpose crosspoint
switch for digital signals. Any input can be switched to any one of the144 outputs. The
protocol or structure of the data routed through the GLX4000 switch is ignored and passes
through unaltered. As a result, the GLX4000 can be used with many different types of
networks and signals.
The GLX4000 Physical Layer Switches have the following features:
 GLX4000 144 supports up to 144 non-blocking serial I/O ports.
 Multiple port card types available for various media and data rates.
 RT4000, 48 port 4.25 Gbps Retimed accepts optical and copper media (SFP)
transceiver modules.
 RT10000, 12 port 10 Gbps accepts optical and copper media Small Form Factor
Pluggable (XFP) modules.
 FW1600, 48 port IEEE 1394b "Firewire" copper media.
 ET1000, 48 port auto-negotiation 10, 100, or 1000 Mbps Ethernet with RJ-45
connectors.
 Contact Curtiss-Wright Controls for a complete list of available port cards.
 Port cards and pluggable transceivers may be mixed in one system.
 Supports Loop, Point-to-Point, One-to-Many communication links.
 Supports multiple physical media options including short wavelength (850 nm), long
wavelength (1300 nm), and HSSDC2.
 Automatic port fault isolation.
 Front panel indicators.
 “Signal Detect” for each port.
 “Transmitter on” for each port.
 “Heartbeat”
 “Flash WR”
 “Alarm”
 “Watch Dog”
 Out-of-band control through an Ethernet port.
 Can be controlled from a remote location.
 Dual-redundant hot-swappable power supplies.
 Hot-swappable fans. 
 Hot-pluggable Small Form-factor transceiver modules.

Hot-pluggable port cards.
 Multiple temperature monitoring points within the enclosure.
 Configuration data stored on a removable CompactFlash card.
 Automatic fan speed control based on enclosure temperature.
 Fan tachometer monitor.
For detailed information regarding the GLX4000 features and operation, contact
Curtiss-Wright Controls, Inc. and request a copy of the
GLX4000 Physical Layer Switch
Hardware Reference Manual
or visit our web site.