3Com 3CNJPSE24 Gegevensblad - Pagina 3

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3Com 3CNJPSE24 Gegevensblad
3 C O M
®
P O W E R O V E R E T H E R N E T M U LT I P O R T M I D S PA N S O L U T I O N D ATA S H E E T
Specifications
Feature
Compatibility, Reliability
IEEE P802.3af compliant
Smart Ethernet wiring
Shielded power
Power Management
Advanced autosensing algorithm
Power management
LED displays
Device Ports, Connectors
Power over Ethernet Output
24 MDI-X device ports
Pin assignments and polarity:
power transmitted over unused
Device connectors: shielded
wiring-pair pins 4/5 (RTN) and
RJ-45, EIA 568A/568B
7/8 (-V)
Management connectors:
Voltage: -48 VDC
DB-9 female port
Device ports: 15.4 W minimum
per port
Cables and Operating Distances
Category 5 or 5e, UTP or STP
Cumulative: 200 W total output
Ethernet cabling up to 100 m
Power feeding: P802.3af-compli-
(328 ft)
ant devices can be connected
directly to existing standard
Data Output
Category 5/5e-cabled LANs; for
Pin assignments: data transmit-
nonstandard or unpowered
ted over wiring-pair pins 1/2
devices, an external splitter can
and 3/6
be installed to separate power
and data transmissions into two
Rates: autonegotiating
separate outputs terminating at
10BASE-T or 100BASE-TX
the end device; phone products
can receive power by installing
Device Detection
a power module between the
P802.3af-compliant resistive
phone and power source
power discovery algorithm with
25 KΩ resistor in the powered
LED Indicators
device
AC power: green/orange
Incoming Power Requirements
DC power: green/orange
AC voltage: 88-264 VAC
User/channel power:
AC frequency: 47-63 Hz
green/orange
AC current: 3.5 A @ 110 VAC,
Dimensions
1.8 A @ 240 VAC
Height: 4.4 cm (1.75 in); 1 RU
DC current: 10 A @ 48 V
Width: 43.3 cm (17.0 in);
Volt amperes rating: 0.48 KVA
19-inch rack
(-48 V) 0.30 KVA (110 VAC)
Depth: 30.2 cm (11.9 in)
Benefit
Complies with the P802.3af draft specifica-
tion standard for interoperability with a wide
range of network devices.
Provides data and power over the same
network wiring; power is transmitted over
unused wiring pairs, keeping it separate
from data wiring pairs.
Reduces signal interference (crosstalk)
and insertion losses via shielded connectors,
intelligent wiring layout, and optimized
line termination.
Detects and tests devices using resistive
power discovery scheme; backwards
compatible with draft standard and
prestandard detection algorithms.
Controls power output to stay within power
budgets.
Provides real-time network monitoring
through bicolor LEDs on the front panel.
Weight
4 kg (8.8 lbs)
Environmental
Temperature: 0° to 40° C (32° to
104° F) operating; -20° to 75° C
(-4° to 167° F) storage
Humidity (noncondensing): Up to
90 percent operating; up to 95
percent storage
Altitude: -304.8 to 3,048 m
(-1,000 to 10,000 ft) operating
Thermal rating: 285 BTU
Networking Standards
Compliance
802.3 (unpowered state), 802.3u,
P802.3af (draft)
Regulatory Compliance
CE marking, C-tick
Electromagnetic Compliance
FCC Part 15 Class B, ICES-003
Class B, EN55022 Class B (emis-
sion), EN55024 (immunity),
VCCI (Japan), MIC (Korea)
Safety Approvals
UL/cUL 60950; EN 60950;
GS mark, IEC 60950,
NOM-001-SCFI-1993 (Mexico)
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