Black Box LPS1000A User's Guide download pdf (Page 3)

LPS1000A

24-hour Technical Support: 1-724-746-5500

Product Description & Features -- Continued

Product features -- continued

Over Current Protection/Under Current Detection (IEEE802.3af)

Media

Converter A

Media

Converter B

Near-End

Device

Far-End

Device

original fault

on the co

er link

media converter B

disables the co

er lin

media converter A

disables the fiber TX link

media converter B

loses the fiber RX link

Link Pass-Through

The Link Pass-Through allows the media converter to monitor both the fiber and

copper RX (receive) ports for loss of signal. In the event of a loss of an RX signal

on one media port, the media converter will automatically disable the TX

(transmit) signal of the other media port, thus, “passing through” the link loss.

The far-end device is automatically notified of the link loss, which prevents the

loss of valuable data unknowingly transmitted over an invalid link. See diagram

below.

Power Detect Reset

With the PSE/LTP switch enabled, a loss of the Fiber RX link will disable PSE power

output on the UTP power for 2 seconds to allow the remote device to reinitialize.

Fiber redundancy

The LPS1000A-2SFP media converter has two fiber SFP ports: one can be configured

as the primary port and one as the secondary port. When redundancy is enabled (SW14

Down, model LPS1000A-2SFP), any fault on the primary port results in the secondary

port becoming operational. When redundancy is disabled, the device operates as a

three-port switch.

Full-Duplex network

In a full-duplex network, maximum cable lengths are determined by the type of cables

that are used. (The 512-Bit Rule does not apply in a full-duplex network.)

Half-Duplex network (512-Bit Rule)

In a half-duplex network, the maximum cable lengths are determined by the round trip

delay limitations of each Fast Ethernet collision domain. (A collision domain is the

longest path between any two terminal devices, e.g., a terminal, switch, router, etc.)

The 512-Bit Rule determines the maximum length of cable permitted by calculating

the round-trip delay in bit-times (BT) of a particular collision domain. If the result is

less than or equal to 512 BT, the path is good.

24-hour Technical Support: 1-724-746-5500

Enclosure Mounting

Optional vertical wall mounting

CAUTION: Make sure that the hardware used for wall mounting can support the

weight of the LPS1000A once mounted. Failure to observe this caution could result in

damage to the equipment.

1. Orient the device as shown in the illustration below.

2. Remove the two #4 Philips head screws securing the cover to the device.

3. Position one side of the bracket assembly as shown in the illustration and

mount it to the device, using the the two #4 Philips head screws.

4. Do Steps 1 thru 3 to mount the bracket to the other side of the device.

5. Position the device on the mounting surface.

6. Mount the device to the wall.

WMBL

Wall-Mount Bracket

Chassis Cover

Screws (Qty 4)

1 2 3 4 5 6 7 8 9 10 11

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Black Box LPS1000A User's Guide Page 3

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