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BRI-Hub

TECHNICAL: 0118 931 2233

Termination Resistors

The signal pairs must be terminated with 100

Ω

resistors at both ends of the bus.

These must be installed as shown below. If not placed correctly, they may short the power
feeding voltage.

100

Ω

each

Pin Pin

description Direction

3 2a TE

4 1a NT

5 1b NT

6 2b TE

Содержание ISU2011-4-EURO

Страница 1: ...0118 965 6000 0118 965 5100 0118 965 5001 464 Basingstoke Road Reading Berkshire RG2 0QN www blackbox co uk 4 Port BRI Hub UK ISU2011 4 UK 4 Port BRI Hub Euro ISU2011 4 EURO 8 Port BRI Hub UK ISU2011...

Страница 2: ...348 Web Site www black box ch Web Site www blackbox com Netherlands Mexico Black Box Datacom BV Black Box De Mexico S A de C V Tel 03032417799 Tel 05 420 0100 Fax 0302414746 Fax 05 420 0123 Web Site w...

Страница 3: ...Common Features 6 Power supply 6 Power Supply 7 Sound Emission 7 S0 Interface 6 Parts List 7 Installation 8 Tabletop 8 Wall mount 8 Rack Mount 8 Power Supply 9 BRI Hub 9 BRI Hub S 9 Connecting the Hub...

Страница 4: ...b it is now possible to use the structured star cabling concept for ISDN In addition the distance between the NT and the TEs may be extended because of the use of point to point links between the BRI...

Страница 5: ...a networks see picture with BRI Hub Options BRI Hub This option derives its power from the power supply provided BRI Hub S This option derives power from the S Bus and uses an internal DC DC converter...

Страница 6: ...5 x 40 x 110 mm Weight 450g Housing material ABS Protection class IP 21 Environmental temperature 0 to 40 C Storage temperature 20 to 70 C Humidity max 90 non condens Supply voltage 6 9V Power consump...

Страница 7: ...re no user serviceable part inside the power adaptor Therefore it is not necessary to open the unit Sound Emission The unit does not emit any sound Parts List When opening your BRI Hub the following p...

Страница 8: ...7 mm still left between wall and screw head Now place the BRI Hub so that the screws fit into the holes in the floor plate The power LED is in the upper right corner Carefully shift the BRI Hub downwa...

Страница 9: ...ides the operation with a power adaptor it is possible for a BRI Hub 8S or BRI Hub 4S to get its power through the power feeding of the NT or PABX via the NT port Please note that the BRI Hub needs ap...

Страница 10: ...t doesn t matter which one you chose The second connector may be used to connect a test device or other TEs see Power Failure Operation on next the page Termination of the NT port may be switched on a...

Страница 11: ...he terminal devices directly connected to the NT ports will still operate For this to happen case one must observe the maximum cable length and the position of the terminating resistors In more detail...

Страница 12: ...I Hub and the terminal equipment TE are longer than the proposed 150m operation may be possible under specific conditions 1 The NT must be switched to extended passive bus Point to point or adaptive t...

Страница 13: ...al pairs must be terminated with 100 resistors at both ends of the bus These must be installed as shown below If not placed correctly they may short the power feeding voltage 100 each Pin Pin descript...

Страница 14: ...versal no operation is possible since the pulses sent by different TEs have different polarity Displays and Controls Displays Pwr is on green when the BRI Hub is operating I e the power supply is acti...

Страница 15: ...original power adapter BRI Hub is faulty Please return the device to your dealer Specific devices on a port do not operate via the BRI Cable shorts Use another port for test Check for cabling faults...

Страница 16: ...16 BRI Hub SALES 0118 965 5100 Notes...