CheetahSwitch Workgroup-2027
Port and Cable Assignments
RJ-45 station ports (MDI-X) can be attached to any
devices which use a standard network interface (e.g., a workstation, server, bridge or router). Similar networking devices (e.g., another switch or hub) can be cascaded by connecting any of the
Pin | Assignment | Assignment | |
(Station Ports 1 - 24) | Port, other device) | ||
| |||
1 | Input Receive Data + | Output Transmit Data + | |
2 | Input Receive Data - | Output Transmit Data - | |
3 | Output Transmit Data + | Input Receive Data + | |
6 | Output Transmit Data - | Input Receive Data - | |
4,5,7,8 | Not Used | Not Used |
Schematics for both straight and crossover
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| Crossover |
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(Switch) | (Adapter) |
| (Switch) | (Switch) | ||||
1 | IRD+ | 1 | OTD+ |
| 1 | IRD+ | 1 | IRD+ |
2 | IRD- | 2 | OTD- |
| 2 | IRD- | 2 | IRD- |
3 | OTD+ | 3 | IRD+ |
| 3 | OTD+ | 3 | OTD+ |
6 | OTD- | 6 | IRD- |
| 6 | OTD- | 6 | OTD- |
AUI Port Description |
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| |
The AUI Port provides a media independent interface that can | Pin | Assignment | |
be attached to a thin Ethernet backbone (10BASE2), a thick | 1 | Collision In Shield | |
Ethernet backbone (10BASE5), or to remote device using fiber | 2 | Collision In + | |
3 | Data Out + | ||
optic cable | |||
4 | Data In Shield | ||
must first attach a transceiver (MAU) designed to interface | |||
5 | Data In + | ||
with the selected media type, and then attach the cable to the | |||
6 | DC Power Common | ||
transceiver. | |||
9 | Collision In - | ||
| |||
| 10 | Data Out - | |
| 11 | Data Out Shield | |
| 12 | Data In - | |
| 13 | DC Power + | |
| 14 | Power Shield | |
| 7, 8 ,15 | No Connection |
EMI Certification
FCC Class A (USA)
Warning: This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause interference to radio communications. It has been tested and found to comply with the limits for a Class A digital device pursuant to Subpart B of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference when operated in a commercial environment. Operation of this equipment in a residential area is likely to cause interference, in which case the user, at his own expense, will be required to take whatever measures are required to correct the interference.
Quick Installation Guide
You may use unshielded
Class A (Canada Department of Communications)
This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the
Cet appareil numérique respecte les limites de bruits radioélectriques applicables aux appareils numériques de Classe A prescrites dans la norme sur le matériel brouilleur: "Appareils Numérques",
VCCI Class A Compliance (Japan)
CE Mark Declaration of Conformance for EMI and Safety (EEC)
This is to certify that this product complies with ISO/IEC Guide 22 and EN45014. It conforms to the following specifications:
EMC: | class A |
class A | |
| |
4kV CD, 8kV AD | |
3V/m | |
1kV - (power line), 0.5kV - (signal line) | |
IEC | 3Vrms |
This product complies with the requirements of the Low Voltage Directive 73/23/EEC and the EMC Directive 89/336/EEC.
Warning! Do not plug a phone jack connector in the
Safety Compliance
Underwriters Laboratories Inc. (USA)
Important! Before making connections, make sure you have the correct Cord Set. Check it (read the label on the cable) against the following specification list.
Voltage | Cord Set Specifications |
120 Volts | UL Listed/CSA Certified Cord Set |
| Minimum 18 AWG; type SVT or SJT three conductor cord |
| Maximum length of 15 feet |
| Parallel blade, grounding type attachment plug rated 15A, 125V |
240 Volts | UL Listed/CSA Certified Cord Set |
(North America) | Minimum 18 AWG; type SVT or SJT three conductor cord |
| Maximum length of 15 feet |
| Tandem blade, grounding type attachment plug rated 15A, 125V |
240 Volts | Cord Set with |
(Europe only) | minimum diameter of 0.75 mm² |
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12 | 13 |