Omnitron Systems Technology iConverter STM 1 Standalone - Manual

iConverter STM-1 Coax to Fiber Media Converter
Standalone User Manual
Product Overview
The
iConverter STM-1 coax to fiber media converter
converts 155.52 Mbps STM-1e coax to STM-1 fiber.
The coax port provides two mini-BNC 75Ω coax connectors
that comply with the ITU-T G.703 and Telcordia GR-253
standards for CMI coded 155.52 Mbps electrical
interfaces.
Installation Procedure
1) Configure DIP-switches
2) Install Standalone Module and Connect Cables
2) Verify Operation
1) CONFIGURE DIP-SWITCHES
SW1 - LINK SEGMENT / LINK PROPAGATE “LS / LP”
This DIP-switch has no effect. The LS function of this
DIP-switch has been disabled to enhance compatibility
with third-party fiber optic devices. The STM-1
media
converter operates in LP mode.
SW2 - REMOTE FAULT DETECT “Norm / RFD”
When the DIP-switch is in the “RFD” position, the
module is configured for Remote Fault Detection. When
the DIP-switch is in the “Norm” position (factory setting),
Remote Fault Detection is disabled and operates in
LP mode.
LINK MODES
Link Propagate (LP)
The LP mode transmits a link signal only when a link signal is detected. Utilizing this
configuration, a loss of a receive link signal will continue to propagate forward to the next
port in the network. Figure 2(a), on the following page, indicates a loss of link on the fiber
port. This fault condition is ‘propagated’ forward causing the coax port to drop its link due to
the propagated fault. This setting allows the loss of a link to be detected by SNMP or other
managed network devices.
Remote Fault Detect (RFD)
The RFD mode transmits a link signal only when a link signal is detected. When a loss of
link is detected, this mode will perform both a loop back and propagate forward. Figure 2(b),
indicates a loss of Rx fiber. The fault is looped back in the opposite direction causing the port
on the other media converter to lose its fiber link. It also propagates the fault forward toward
the coax port causing the coax port to lose its link. Because the other unit is configured for
Link Propagate, the loss of fiber link causes the coax port to drop its link due to the propagated
fault condition. 040-8899S-001A 3/09
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