GarrettCom DS880
8 ports, copper, stackable,
NEBS Certified
Call us for Pre-sales and discount pricing
on
Garrett Magnum DS880, 8 ports
301-924-7400
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GarrettCom DS880
Features
• Provides eight RJ-45 ports
per stackable hub, each
port speed-sensing for
100 or 10Mb
• Combines both 100Mb
and 10Mb port speeds
with stackability for expansion
and flexibility in
offices and labs.
• Supports stacks of up to 3
units for a maximum of 24
10/100 Ethernet ports
• Complies with 100BASE-T and 10BASE-T Ethernet standards; full 100Mb Class II +
repeater functionality
• Comes with a durable
metal enclosure, internal
auto-ranging power supply;
NEBS Certification
and -48VDC optional.
Description
Magnum DS880 Stackable Hubs provide the flexibility of 100Mb
and 10Mb Ethernet ports in one hub along with the expandability of
stacking. Small-to-medium-sized networks that need to mix ports at
100Mb performance for high bandwidth applications with economical
10Mb ports for other nodes can benefit from the dual-speed 10/100
Magnum DS880 hubs.
Network chip technology enables the Magnum DS880 hubs to
identify either 100Mb or 10Mb signals on a per-port basis. Each RJ-45
port is independently auto-sensing for speed, adapting to match the
speed of the connected device. Each port can change from 10Mb to
100Mb (or vice-versa) at any time without affecting the operation of
the other connected ports. This capability provides the ultimate in flexibility
for small-to-medium-sized mixed-speed networks that are gradually
transitioning from 10Mb to 100Mb Fast Ethernet speed.
The Magnum DS880 units support two shared traffic domains,
one at 100Mb and one at 10Mb. Each port is connected into the appropriate
100Mb or 10Mb domain, depending on its speed as sensed.
As DS880 stacked units are added, the two domains automatically
expand to serve the new ports, up to the three-unit-high stacking capability
of the system. Any combination of 100Mb or 10Mb ports may
be in use.
One model of the Magnum DS880-series hubs includes an internal
switch or bridge to interconnect the two shared traffic domains,
enabling all users on a DS880 stack, whether 100Mb or 10Mb, to talk
to each other. This self-learning switch filters and selectively forwards
packets between the two traffic domains, unifying them. The performance
of each domain is maintained at its peak potential, uncompromized by local
traffic on the other domain. Only one DS880 with an internal switch unit is
necessary to support the entire stack.
The eight-port DS880 hubs have an internal auto-ranging power supply. They can
be conveniently mounted in the workplace or in a wiring closet area. The Magnum
DS880 Stackable Hubs and other Magnum products are designed and manufactured in
the USA and backed by a three-year warranty.
Specifications
PERFORMANCE:
Data Rate: 100 or 10M bits / second, per port, auto-sensing for speed.
The hub supports two traffic domains, one at 100Mb and one at
10Mb, operating concurrently. PDV (100M Path Delay Value): 80BT exceeds Class II specification
Partitioning: Enforced after 63 consecutive collisions
Auto-reconnect: Occurs after one packet of error-free reception
INTERNAL SWITCH or BRIDGE:
(One per stack, optional, to interconnect the two traffic domains)
Processing type: Store and Forward, Auto-learning: 8K addresses,
self-learning
Packet buffers: 2MB, dynamically allocated and shared on both sides
Latency (not including packet time):
10 to 100Mb: 5µs, 100 to 10Mb: 5µs
CPU type: State machine
NETWORK STANDARDS:
100Mb: IEEE 802.3u, 100BASE-TX
10Mb: IEEE 802.3, 10BASE-T
Auto-Speed-Sensing: IEEE 802.3u
OPERATING ENVIRONMENT:
Ambient Temperature: 32°F to 120°F ( 0°C to 50°C)
Storage: -5°to 140°F (-20°to 60°C)
Ambient Relative Humidity: 10% - 95% (non-condensing)
NETWORK CABLE CONNECTORS:
Eight RJ-45 shielded female
100Mb: Category 5 UTP/STP, 10Mb: Cat. 3,4, 5 UTP
STACKING CABLE:
A stacking cable with 50-pin “SCSI” male connectors, shielded, 9
inches (23 cm) long, included with each DS880-A “add-on” unit. Supports
stacking up to 3 units high.
SWITCH, MANUAL:
Up-link: Converts RJ-45 port #8 from a regular (= position) user segment
port to a crossover (X position) up-link port for on-off connection
to a central hub or another cascaded hub.
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.
-48VDC POWER SUPPLY (OPTIONAL “NEBS” Models):
Input: 36 to -72 VDC (auto-ranging)
Std. Terminal Block: "-, GND, +",
Power Consumption: 20 Watts max
May be ordered with optional Dual DC power input, for
continuity of operation when either one of the DC input
sources is interrupted.
MECHANICAL:
Enclosure: Rugged high-strength sheet metal. Suitable for standalone
or shelf mounting. Two units fit side by side in a 19” rack
space.
Dimensions: 1.3 in H x 8.5 in W x 9.75 in D
(3.3 cm x 21.6 cm x 25.0 cm)
Weight: 2.5lb. (1.15 kg)
Cooling Method: Fan cooled, internal 9cfm
LED INDICATORS ON CHASSIS: PWR: Steady on when power applied
BR: Steady on, unit has bridge inside
ACT: Common packet activity indicator, one for 100Mb domain
and one for 10Mb domain
COL: Common collision indicator, one for 100Mb domain and one
for 10Mb domain
LED INDICATORS PER RJ-45 PORT:
100: Steady on when the port senses operation at 100Mb speed LK: Steady on when twisted-pair link is operational.
RX: Flashing when the port isreceiving data
AGENCY APPROVALS:
UL Listed (UL1950), cUL, CE
Emissions meet FCC Part 15, Class A
WARRANTY:
Three years Made in USA
- Purchase orders accepted on GarrettCom, Inc. equipment
- Contract Buying and Volume Discounts available !!
- Please contact us 301-924-7400