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Digital Media 900TL - page 1
EK–DTMAU–IN. A01 DECmau 900TL INST ALLA TION The DECmau 900TL is a T oken Ring Multistation Access Unit (MAU). As a member of Digital’s T oken Ring product family , it operates in a DEChub 900 MultiSwitch, or a single-slot hub (DEChub ONE MAU 900TL). The MAU connects up to eight stations using 100-ohm shielded or unshielded cable with RJ45 co ...
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Digital Media 900TL - page 2
FCC NOTICE – Class A Computing Device: This equipment generates, uses, and may emit radio frequency energy . The equipment has been type tested and found to comply with the limits for a Class A computing device pursuant to Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such radio frequency interfere ...
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Digital Media 900TL - page 3
PK–02586–IL 1 ) Power LED. Lights when the MAU has power . 2 ) Module OK LED. Lights when the MAU passes its self-test. If the MAU fails its self-test, the OK LED is off. 3 ) Ring A/B LEDs. In a hub, either the A LED or the B LED is on to show the ring. In a standalone MAU, both Ring LEDs are always off. 4 ) Speed LEDs. Either the 16 LED or the ...
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Digital Media 900TL - page 4
Note: The rear panel shown here is used only when the MAU is in a single-slot hub configuration. 1 ) Ring In LED. Lights with a Ring In connection. 2 ) Ring Out LED. Lights with a Ring Out connection. 3) Power Connector . Provides power connection for the MAU. 4 ) Ring In Connector . Connects Ring In to the Ring Out connector of a MAU or repeater . ...
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Digital Media 900TL - page 5
a. Loosen the screw on the single-slot hub until it disengages. b. With one hand holding the front of the MAU, and your other hand holding the single-slot hub, carefully pull the two units apart. When you install a MAU in a DEChub 900 MultiSwitch, you do not have to turn off the hub power . Remove the single-slot hub (if necessary). If you want to ...
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Digital Media 900TL - page 6
Connect station cables to any available lobe connector on the MAU. For 150-ohm applications, you also need an impedence matching transformer cable (Digital part number BN26T -03). Connect station cables. 4 PK–02570–IL Installing a MAU in a DEChub 900 MultiSwitch (continued) 6 DECmau 900TL V erify power . 3 With power on in the hub, verify that ...
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Digital Media 900TL - page 7
a. Set the Ring In and the Ring Out Autowrap switches to 1 or 0. b. Set the switch to 1 to enable Autowrap when the Ring In or Ring Out port connects to a device with Digital’s Auto wrap, there is only one MAU in the network, or the port is not connected to the network. Otherwise, set the switch to 0 to disable Autowrap. Mount MAU (optional). 1 C ...
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Digital Media 900TL - page 8
If a MAU is being added to an existing network, connect Ring In to the Ring Out connector of a MAU or repeater , and connect Ring Out to the Ring In connector of a MAU or repeater . Connect station cables. 4 Check LEDs. 6 With power on, verify that the Power and Module OK LEDs are on. Install a MAU to adjacent MAUs or repeaters. 5 Connect station c ...
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Digital Media 900TL - page 9
Removing a MAU from a DEChub 900 MultiSwitch a. Lift up the Release lever on the hub. b. Pivot the MAU back on its bottom mounting tab until it disengages from the hub. DECmau 900TL 9 Note: When you remove a MAU from the hub, do not turn off the hub power . Remove the MAU from the hub. 1 2 Disconnect the station connector cables from the MAU. The r ...
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Digital Media 900TL - page 10
LED Summary LED 1 Off On Flashing Power No Power Power OK Module OK Self-test failed Self-test OK or not operating 4/16 Mb/s No activity V alid speed or management set speed Lobe Inactive Connected to network Continuous single flash: network management disabled port. Continuous double flash: wrong speed. Hub MAU ONL Y : Ring A/B Not connected Conne ...
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Digital Media 900TL - page 11
Cabling T able 1 lists the T oken Ring industry guideline for the maximum lobe length of shielded twisted-pair (STP) and unshielded twisted-pair (UTP) cable. T able 1 Industry Lobe Length Guideline Lobe lengths for Digital’s MAUs exceed the industry guideline. Specifically , lobe lengths can be longer than the industry guideline for STP cable and ...
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Digital Media 900TL - page 12
Cabling (continued) Digital recommends that you use repeaters to segment the ring in a network with multiple wiring closets. In some situations, only one, or no repeaters, are required. Refer to the appropriate T oken Ring repeater manual for specific information. When distances exceed the lobe lengths in T able 2, or if the MAU does not have Digit ...
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Digital Media 900TL - page 13
Problem Solving If ... Then ... Do This ... DEChub 900 MultiSwitch and DEChub ONE Power LED is off. MAU does not have power . V erify that outlet has power . Check power connection to MAU. Replace power supply . Replace MAU. Module OK LED is off. MAU failed self-test. Replace MAU. Ring A and B LEDs alternately MAU needs an upgrade If you have netwo ...
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Digital Media 900TL - page 14
Problem Solving (continued) If ... Then ... Do This ... DEChub 900 MultiSwitch ONL Y Lobe, Ring In, Ring Out, Network management has T o change settings, you can use Ring A/B LEDs flash together . disabled MAU. network management commands or the MAU’s Reset switch. MAU does not connect to Network management will not Check speed and hub hub. conne ...
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Digital Media 900TL - page 15
Product Specifications Product Specification In a Hub DEChub ONE Size 27.3 x 1 1.2 x 3.2 cm 27.3 x 17.0 x 3.2 cm (10.8 x 4.4 x 1.2 inches) (10.75 x 6.7 x 1.25 inches) Weight .82kg (1.5 lb) 1.09kg (2.0 lb) Operating temperature 5 ° C to 50 ° C (41 ° F to 122 ° F) 5 ° C to 50 ° C (41 ° F to 122 ° F) Relative humidity 10% to 95% non-condensing ...
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