|Product CN-8311 - 1 port 10Base-FL with ST/SMA Connectors
The CodeNet-8311 is a fiber optic plug-in module for the Code-net MultiStar/3Com MultiConnect active star Ethernet system.
The unit provides an optical interface which fully complies
with the IEEE 802.3 (Section 9.9) specifications for a vendor independent fiber optic inter-repeater link (FOIRL).
The CodeNet-8311 may be used to provide a point~to-point
optical link between two MultiStar/MultiConnect stars, or
between a MultiStar/MultiConnect and any fiber optic media
access units (FOMAUs) which comply with IEEE 802.3 (Section 9.9) specifications such as Codenoll's CodeNet-8381
FOMAU. Full compatibility of the optical interface allows the
user to add MultiStar/MultiConnect repeaters to existing optical
networks using equipment from multiple vendors.
The CodeNet-8311 has front panel status indicators and
manual reset/partition controls for quick diagnosis and
resolution of network problems. An on-board switch allows
selection of either high or low optical transmit power allowing
the unit to provide Ethernet links up to 4.5 km (depending on
total network propagation delay and flux budget).
The CodeNet-8311 automatically partitions itself in the event
of a fault from the error-free segments, and automatically reconnects when the fault condition no longer exists.
When a segment is autopartitioned, its partition LED glows
continuously. Once a segment is autopartitioned, the segment
is sampled every 400 msec by transmitting a 523-bit packet
called a "bleep." If the "bleep" packet is transmitted successfully without a collision, the segment is reconnected. The partition LED then begins flashing, indicating that the problem has
been resolved. The reset switch on the front panel clears the
LED and does not affect the segment's operation.
Fully compatible with IEEE Standard 802.3, Section 9.9.
May be used to link one MultiStar/MultiConnect to
another on a fiber optic link at distances up to 4.5 km.
Low Light Level monitor detects fiber breakage;
enhances data integrity.
Optical "idle" Signal allows simple measurement of
transmitter power...provides a built-in optical source for
testing fiber cables and connectors.
Electrical interface to Codenell MultiStar/CodeStar Multi-Connect system(s).
User selectable Hi-Lo optical transmitter power allows
use of non-standard optical fiber sizes up to 1001~m core
On-board "bleep" function facilitates network problem
Automatic/manual partitioning (when faulty) with automatic/manual reconnection.
Network Standards: IEEE 802.3 CSMA/CD Ethernet 10 Mbps
baseband, Section 9.9 Fiber Optic Repeater
Electrical Interface: Module for Codenoll's MultiStar or 3Com
MulMulti-Connecthernet active star
Optical Interface: Duplex fiber optic cable with bayonet type
ST connectors standard; screw-on SMA
connectors optional (FOIRL standard is SMA).
Partition Switch: Manual Partition
Reset Manual Partition
Clear Autopartition indicator
Internal Option Switches (factory settings in bold):
Optical Power (Hi/Lo)
Jabber Reset (Auto/Manual)
CodeLED high radiance edge-emitting
Aluminum Galium Arsenide (AlGaAs) Light
Emitting Diode (LED)
Silicon PIN-type photodiode
830 nm +/- 2O nm, peak
50/125, 62.5/125, 85/125 or 100/140 µm
duplex, multimode, graded index.
4.7 in W x 12.0 in L (12cm x 30cm)
0°C to + 55°C; 10 to 90% humidity (non-condensing)
500mA @ + 5V; 40mA @ + 12 V, typical
8 oz (226 grams)
Optical Specifications *1:
Peak Power Output Into:
62.5 p.m core fiber: -12 dBm
100 ~ core fiber: -11.5 dBm
50 Im' re fiber: -15.5 dBm
Receiver Sensitivity: -27 dBm
Optical Flux Budget Into
62.5 µm core fiber: 15 dB
100 µm core fiber: 15.5 dB
50 µm core fiber: 11.5 dB
Dynamic Range: 18 dB
Maximum Cable Length: 4500 meters *2
*1 Peak power measured at 25°C, 50% duty cycle. Hi power [factory default]
Lo Power reduces power by approximately 3 dBm and distance to approximately 3000 m.
*2 Limited by IEEE 802.3 roundtrip delay time. Flux budget permitting
Activity -- Yellow
Link Fault --Yellow
Partition -- Red
Request For Quote
E-mail Tech Support