Owner's manual

iConverter STM 1 Coax to Fiber Media Converter
Plug-In User Manual
Product Overview
The iConverter STM 1 coax to ber media converter converts
155.52 Mbps STM-1e coax to STM-1 ber.
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) Congure DIP-switches
2) Install Module in Chassis 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 ber 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 congured 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
conguration, 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 ber
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 ber. The fault is looped back in the opposite direction causing the port
on the other media converter to lose its ber link. It also propagates the fault forward toward
the coax port causing the coax port to lose its link. Because the other unit is congured for
Link Propagate, the loss of ber link causes the coax port to drop its link due to the propagated
fault condition.
Form 040-8899S-002A 6/09
Page 1
Omnitron Systems Technology * 140 Technology Dr. #500 * Irvine, CA 92618
949.250.6510 tel * 949.250.6514 fax * www.omnitron-systems.com