BSS Audio MC-1 - Manual (Page 5)

8
Operation - Continued
Link Pass-Through
The Link Pass-Through feature allows the media converter to monitor both the
fiber and copper RX (receive) ports for loss of signal. Refer to the illustration
below. For example, in the event of a loss of an RX signal (1), the media
converter will automatically disable the fiber TX (transmit) signal (2), thus,
“passing through” the link loss (3). The far-end device is automatically notified
of the link loss (4), which prevents the loss of valuable data unknowingly
transmitted over an invalid link.
Transparent Link Pass-Through
Transparent Link Pass-Through operates similar to Link Pass-Through with one
exception: the fiber link between the converters remains active. A signal is
passed through to the remote converter, causing it to shutdown the copper
link, notifying the end device of the link failure.
Auto-Negotiation
Auto-Negotiation enables automatic configuration to achieve the best possible
mode of operation over a link between devices. A device with this feature
enabled will broadcast its speed (10Mbs, 100Mbs, etc.) and duplex (half/full)
capabilities to another device with this feature, then negotiate the best mode
of operation between them—no user intervention required.
Fiber Auto-Negotiation
Fiber Auto-Negotiation allows the fiber interface to detect and then advertise
the support abilities of the remote device. It is supported only when the fiber
is connected to a device with a negotiating port.
Loop Back
This diagnostic feature enables the media converter to loop back the signal
from the RX port to the TX port for testing and troubleshooting purposes. Test
signals from a bit-error test unit can then be inserted into either the copper or
fiber link to test a particular segment.
This type of diagnostic test can only be performed from the local to the
remote device with loop back enabled on the remote device.
SNMP
Note: SNMP is not supported in the MC-1.
4 1
Media
Converter A
Media
Converter B
Near-End
Device
Far-End
Device
original fault
on the copper link
media converter B
disables the copper link
media converter A
disables the fiber TX link
3 2
media converter B
loses the fiber RX link
9
Cable Specifications
The physical characteristics must meet or exceed IEEE 802.3™ specifications.
Fiber cable
Bit Error Rate: <10-9
Single mode fiber (recommended): 9 µm
Multimode fiber (recommended): 62.5/125 µm
Multimode fiber (optional): 100/140, 85/140, 50/125 µm
BSS Audio MC-1 1310 nm single mode
Fiber-optic Transmitter Power: min: -9.5 dBm max: -3.0 dBm
Fiber-optic Receiver Sensitivity: min: -20.0 dBm max: -3.0 dBm
Link Budget: 10.5 dB
BSS Audio 800-931-2357 8760 South Sandy Parkway, Sandy, Utah 84070 www.bssaudio.com 800-931-2357
Copper cable (Category 5 -- minimum requirement)
• Gauge = 24 to 22 AWG; Attenuation = 22.0 dB /100m @ 100 MHz
• Straight-through OR crossover cable may be used.
• Shielded twisted-pair (STP) OR unshielded twisted-pair (UTP) may be used
• All pin pairs (1&2, 3&6, 4&5, 7&8) are active in a gigabit network.
• Use only dedicated wire pairs for the active pins; e.g., blue/white & white/blue,
orange/white & white/orange, etc.
• Do not use flat or silver satin wire.