Black Box LH8050A User manual

Get the flexibility you need for Ethernet
network “fiber-to-the-desktop” applications.
This modular hub supports a variety of
10- and 100-Mbps fiber port modules.
Get the flexibility you need for Ethernet
network “fiber-to-the-desktop” applications.
This modular hub supports a variety of
10- and 100-Mbps fiber port modules.
Mixed-Media Fiber Hubs
© 2007. All rights reserved. Black Box Corporation.
FREE 24-hour Tech Support: 724-746-5500
blackbox.com

2 of 3
FEATURES
• Supports many fiber port types.
• All RJ-45 ports are autosensing
for 10 or 100 Mbps.
• Complies with 10BASE-T, 10BASE-FL,
100BASE-TX, and 100BASE-FX Ethernet
standards, plus it functions as a full
Class II+ repeater.
• There’s even a module for a fast uplink
to a file server or backbone!
OVERVIEW
This is the must-have product for anyone who’s gradually
transitioning a small- to medium-sized network from 10-Mbps
Ethernet to 100-Mbps Fast Ethernet. The Mixed-Media Fiber
Hub accepts either 10- or 100-Mbps signals over fiber or copper
cables, configured on a per-port basis.
Here’s how it works. The hub supports two shared traffic
domains—one at 10 Mbps and one at 100 Mbps. An internal
bridge connects the two domains.
Each fiber port handles either 10- or 100-Mbps speeds.
Mix and match any combination of front-mounted port modules
(ST, SC, FC, MT-RJ, multimode, or single-mode) to fit your net-
working needs. Each RJ-45 port is also independently auto-
sensing for 10/100 speed and adapts to match the speed of the
connected devices.
And if 16 ports just aren’t enough, you can add 16 more
autosensing 10/100 twisted-pair ports: Just connect a Dual-
Speed 10/100 Stackable Hub (LH8016A-C). Stacking the two
hubs creates one 32-port hub. You can also stack one or two
of the 16-Port Add-On Chassis (LH8050A-C) with a Base Chassis
for a total of up to 48 ports.
The chassis is available with an additional switch-port
module for switched 10- or 100-Mbps connection to high-
speed devices, creating a third collision domain.
The Mixed-Media Fiber Hub includes the 16-Port Mixed-
Media Fiber Hub Chassis (with additional switch port module
installed, if ordered), a users’ manual, an AC power cord
(115-VAC), and one set of metal ears for optional 19"
rackmounting.
NOTE: You can also stack these hubs with our 16-Port Dual-Speed
10/100 Stackable Hubs. The 16-Port Base Chassis is compatible with
the Dual-Speed Master Hub (LH8016A-M), and the 16-Port Add-On
Chassis is compatible with the Dual-Speed Client Hub (LH8016A-C).
Mixed-Media Fiber Hub,
16-Port Chassis
(LH8050A)
Mixed-Media Fiber Hub,
16-Port Chassis
(LH8050A)
UTP devices
Fiber devices
Server
Router
Internet
UTP devices
UTP devices UTP devices
5/4/2007
#22794
724-746-5500 blackbox.com
Connect both 10-Mbps and 100-Mbps devices to your mixed-media network.

3 of 3
5/4/2007
#22794
724-746-5500 blackbox.com
Item Code
Mixed-Media Fiber Hubs
16-Port Base Chassis LH8050A
16-Port Base Chassis with Additional Switch
Port Module Installed, 100-Mbps Fiber,
Multimode SC LH8050A-SSC
16-Port Add-On Chassis LH8050A-C
UTP Port Modules (RJ-45)
10/100 Modules LH8056C
10/100-Mbps, Switch-Selectable Uplink LH8056C-UP
Fiber Port Modules
10-Mbps, Multimode
ST®Connector LE8055C-ST
SC Connector LE8055C-SC
10-Mbps, Single-Mode
ST Connector LE8055C-SMST
100-Mbps, Multimode
ST Connector LH8051C-ST
SC Connector LH8051C-SC
MT-RJ Connector LH8053C-MTRJ
FC Lucent Port Connector LH8052C-FC
100-Mbps, Single-Mode
SC Connector LH8051C-SMSC
Blank Chassis Panel LH8057A-PNL
You may also want to order cable…
Bulk Category 5 Solid-Conductor Cable,
2-Pair, PVC EYN717A
Duplex Fiber Optic Cable, PVC,
ST®–ST, Custom Lengths EFN062-CC
You might also need…
16-Port Dual-Speed 10/100 Stackable Hubs
Dual-Speed Master Hub LH8016A-M
Dual-Speed Client Hub LH8016A-C
(The LH8016A-M is compatible with the 16-Port Base Chassis
and the LH8016A-C works with the 16-Port Add-On Chassis.)
TECH SPECS
Auto-Reconnect — Occurs after one packet of error-free reception
Bridging — Store-and-forward processing; 8 KB, self-learning address
table; 2-MB dynamic packet buffers
Compliance — CE, FCC Part 15 Subpart B Class A, UL®Listed (UL 1950),
cUL
Cooling Method — Fan-cooled, internal @ 9 cfm
Enclosure — Rugged sheet metal, suitable for standalone or
rackmounting; metal brackets for 1U rackmounting included
Manual Switches — Uplink switch: LH8056C-UP module only
(for crossover and cascading);
Auto/100 switch: LH8056C and LH8056C-UP modules
(for autonegotiation or fixed 100-Mbps speed operation)
Maximum Ethernet Segment (or Domain) Lengths —
10BASE-T (Category 3, 4, 5 UTP): 328 ft. (100 m);
100BASE-TX (Category 5 UTP): 328 ft. (100 m);
Shielded twisted pair: 492 ft. (150 m);
10BASE-FL multimode fiber optic: 6562 ft. (2 km);
10BASE-FL single-mode fiber optic: 32,810 ft. (10 km);
100BASE-FX half-duplex multimode: 1350 ft. (412 m);
100BASE-FX full duplex multimode: 6562 ft. (2 km);
100BASE-FX half-duplex single-mode: 1350 ft. (412 m);
100BASE-FX full duplex single-mode: 49,215 ft. (15 km)
Partitioning — Enforced after 63 consecutive collisions
PDV (100 MB Path Delay Value) — 80BT exceeds Class II specification
Speed — 10 or 100 Mbps per port
Standards — IEEE 802.3u: 100BASE-TX, 100BASE-FX;
IEEE 802.3: 10BASE-T, 10BASE-FL
Connectors — AC power connector: IEC-type, male, recessed;
Modular connectors on a per-port basis;
RJ-45 shielded female ports: 100 Mbps: Category 5 UTP/STP;
10 Mbps: Category 3, 4, 5 UTP/STP;
Fiber ports at 100 Mbps and 10 Mbps; Port modules for all fiber
connector types; (2) DB25F stacking connectors
Indicators — Chassis: LEDs: Power, Bridge Inside, Packet Activity 10,
Packet Activity 100, Collision 10, Collision 100;
Fiber Port Modules: Link, Activity;
UTP Port Modules: Link, Activity, Speed
Temperature — Operating: 32 to 120°F (0 to 49°C);
Storage: -5 to +140°F (-21 to +60°C)
Relative Humidity — 10 to 95% noncondensing
Power — 90 to 260 VAC (autosensing), 47 to 63 Hz,
25 watts typical (30 watts maximum)
Size — Chassis: 1.75"H x 17"W x 10.5"D (4.5 x 43.2 x 26.7 cm)
Weight — Chassis: 4 lb. (1.8 kg);
Modules: 0.5 lb. (0.2 kg)
TYPICAL APPLICATION
Your department’s first priority is a secure network.
Because it’s possible to eavesdrop with copper wiring, you
need a fiber LAN to connect to each desktop and node.
The Mixed-Media Fiber Hub supports all the fiber port
types (including the latest models), adapting the fiber LAN to
changing technology. The dual-speed feature means there’s
room for legacy 10-Mbps equipment as well as newer
100-Mbps equipment.
LH8050A