Black Box Dual-Speed 10/100 Stackable Hub - Manual (Page 3)

3 of 3 10/29/2007
#20091 724-746-5500 blackbox.com
TECH SPECS
Performance:
Data Rate — 100 or 10 Mbps, per port, autosensing for speed. The hub
supports two traffic domains, one at 10 Mbps and one at 100 Mbps,
operating concurrently.
PDV (100 M Path Delay Value) — 80BT exceeds Class II specification
Auto-Reconnect — Occurs after one packet of error-free reception;
Internal Switch or Bridge in Master models (one Master per stack, optional,
to interconnect the two traffic domains):
Processing Type— Store and forward
Address Table — 8 KB, self-learning
Packet Buffers — 2 MB, dynamically allocated and shared on both sides
Latency (not including packet time) — 10 to 100 Mbps: 5 microseconds,
100 to 10 Mbps: 5 microseconds
Network Standards:
100 Mbps — IEEE 802.3u, 100BASE-TX
10 Mbps — IEEE 802.3, 10BASE-T
Auto Speed-Sensing — IEEE 802.3u
Operating Environment:
Ambient Temperature — 32 to 120°F (0 to 50°C)
Storage — -5 to +140°F (-20 to +60°C)
Ambient Relative Humidity — 10 to 95% (noncondensing)
Network Cable Connectors: (8) or (16) RJ-45 shielded female;
100 Mbps: Category 5 UTP/STP; 10 Mbps: Category 3, 4, 5 UTP
NOTE: Use Media Converters to connect to fiber media.
Stacking Cable: A stacking cable with 50-pin HSSI male connectors,
shielded, 9 inches (23 cm) long, is included with each client unit.
Switch, Manual: Uplink: Converts RJ-45 port #8 from a regular
(= position) user-segment port to a crossover (X position) uplink port
for on-off connection to a central hub or another cascaded hub.
Item Code
Dual-Speed 10/100 Stackable Hub, 8-Port
Master LH8000A-M
Client LH8000A-C
Rackmount Dual-Speed 10/100 Stackable Hub, 16-Port
Master LH8016A-M
Client LH8016A-C
✦ 8- or 16-Port Dual-Speed 10/100 Stackable Hub
✦ Stacking cable
✦ An internal power supply
✦ Cooling fan
✦ Metal brackets for shelf- or wallmounting
✦ User’s manual
WHAT‘S INCLUDED
• Category 5 cable for 100-Mbps connections
• Category 3, 4, or 5 cable for 10-Mbps connections
• 48-VDC power supply (call Technical Support for ordering
information)
YOU MAY ALSO NEED…
LH8000A
Power Supply (Internal):
AC Power Connector — IEC-type, male recessed, rear of chassis
Power Input Voltage — 90 to 260 VAC (auto ranging)
Power Input Frequency — 47 to 63 Hz
Power Consumption — 20 watts max.
48-VDC Power Supply (Optional):
Input — 36 to 72 VDC (auto-ranging)
Terminal Block, in rear — -, GND, +
Power Consumption —
LH8000A-M & C: 20 watts;
LH8016A-M & C: 30 watts
Mechanical:
Enclosure — Rugged high-strength sheet metal. Suitable for standalone
or shelf-mounting. Metal brackets for optional wallmounting
included.
Cooling Method — Fan cooled, internal @ 9 cfm
Size — LH8000A-M & C: 1.4"H x 8.5"W x 9.75"D (3.5 x 21.6 x 25 cm);
LH8016A-M & C: 1.7"H x 17"W x 9"D (4.4 x 43.2 x 22.9 cm)
Weight — LH8000A-M & C: 2.5 lb. (1.15 kg);
LH8016A-M & C: 4 lb. (1.8 kg)
LED Indicators on Chassis:
PWR — Steady on when power is applied
BR — Steady on if unit has bridge inside
ACT — Common packet activity indicator, one for 100-Mbps domain and
one for 10-Mbps domain
COL —Common collision indicator, one for 100-Mbps domain and one for
10-Mbps domain
LED Indicators per RJ-45 Port:
100 — Steady on when the port senses operation at 100-Mbps speed
LK — Steady on when twisted-pair link is operational
RX — Flashing when there is activity (receiving data) on the port