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FAULT ISOLATION and CORRECTION
If the media converter fails, isolate and correct the failure by determining the
answers to the following questions and then taking the indicated action:
1. Is the P(o)W(e)R LED on the media converter illuminated?
NO
• Is the power adapter the proper voltage and cycle frequency for the
AC outlet?
NOTE: Refer to the “Power Supply Requirements” on page 7.
• Is the power adapter properly installed in the media converter and
in the outlet?
• Contact Technical Support: (800) 260-1312/(800) LAN-WANS.
YES
• Proceed to step 2.
2. Is the SDF (Signal Detect/Fiber) LED illuminated?
NO
• Check fiber cables for proper connection.
• Verify that TX and RX cables on media converter are connected to
RX and TX ports, respectively, on other media converter.
• Contact Technical Support: (800) 260-1312/(800) LAN-WANS.
YES
• Proceed to step 3.
3. Is the SDC (Signal Detect/Copper) LED illuminated?
NO
• Check twisted pair cables for proper connection.
• Check RJ-45 Pinning Switch for correct twisted pair cable
configuration.
• Check integrity of device attached to media converter by twisted-
pair cable.
• Contact Technical Support: (800) 260-1312/(800) LAN-WANS.
YES
• Contact Technical Support: (800) 260-1312/(800) LAN-WANS.
NOTE:
T1 must be selected (
LEFT
SWITCH SET
#4 UP) for
RIGHT
SWITCH SET
to have any effect.
If E1 is selected (
LEFT SWITCH SET
#4 DOWN), RIGHT SWITCH SET
is
ignored and the default is E1
3.0V 120Ω cable.
If T1 and short haul are
selected (
LEFT SWITCH SET
#3
UP, #4 UP), but
RIGHT SWITCH
SET
is not set to a valid short
haul value, the short haul
default is DSX-1 0’-133’ cable.
If T1 and long haul are
selected (
LEFT SWITCH SET
#3
DOWN, #4 UP), but
RIGHT
SWITCH SET
is not
set to a valid
long haul value,
the long haul
default is 0db
100Ω cable.
LONG HAUL Switch Settings*
12
12
12
12
-22.5db
100 ohm cable
-15db
100 ohm cable
-7.5db
100 ohm cable
0db
100 ohm cable
1 2 3 4
*Right switch set #4 not used
12
12
12
12
Transmit All Ones onto TP
on loss of FiberCarrier Detect
UP= Enabled
T1/E1 Selection
UP= T1
Long Haul/Short Haul (T1 only)
UP= Short Haul
Transmit All Ones onto Fiber
on loss of TP Carrier Detect
UP= Enabled
1 2 3 4
NETWORK Switch Settings
KEY
= UP
= DOWN
SHORT HAUL Switch Settings*
12
12
12
12
12
12
DSX-1 533'-655'
100 ohm cable
DSX-1 399’-533’
100 ohm cable
DSX-1 266’-399’
100 ohm cable
DSX-1 133'-266'
100 ohm cable
DSX-1 1 0’-133’
and ANSI T1.403
100 ohm cable
DSX-1 6.0V
100 ohm cable
1 2 3 4
*Right switch set #4 not used
1 2 3 4
1 2 3 4
toward network connectors
toward chassis
LEFT SWITCH SET
1 2 3 4
1 2 3 4
toward network connectors
toward chassis
RIGHT SWITCH SET