Transition Networks PSM-8E, User Manual

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FAULT ISOLATION and CORRECTION
If the PSM-8E fails, isolate and correct the fault by determining the answers to
the following questions and then taking the indicated action:
1. Is the PSM-8E Power LED illuminated?
NO
• Is the LED on top of the external PSM-8E power supply illuminated?
• Is the power cord properly installed in the PSM-8E and in the
grounded AC outlet?
• Does the grounded AC outlet provide power?
• Contact Technical Support: (800) 260-1312.
YES
• Continue at step 2.
2. Is the PSM-8E RX LED OFF or FLASHING?
YES
• Are the fiber-optic connectors are properly connected?
• Have the fiber-optic budget and distance been exceeded?
NO
• Continue at step 3.
3. Is the PSM-8E TX LED OFF?
YES
• If problems persists, contact TRANSITION Networks Technical
Support.
NO
• Continue at step 4.
4. Is a network device down or unstable?
YES
• Is there one and only one host polling group per PSM-8E polling
group?
• Does the host device type match the device?
• Has the host work station controller (WSC) capacity been
exceeded?
• Is the device properly terminated using two 54.9 ohm resistors
located between the "A" phase pin & earth ground and the "B" phase
pin & earth ground? NOTE: Termination is provided by a "Y" or "T"
cable assembly or by a terminating balun (i.e. ASFT series).
• Are there polarity reversals in the cable?
• Does the cable distance exceed the PSM-8E specification?
• Is the cable data grade?
• Does the wiring use natural pairs?
• Does the wiring avoid sources of environmental noise?
• Does the balun pinout match the PSM-8E ’s pinout?
• Does the pinout/polarity of the host side balun match the
pinout/polarity of the device side balun?
NO
• Continue at step 5.
Install PSM-8E at Site
WARNING: During the site installation, handle the PSM-8E in such a way
that the PSM-8E does not fall. Failure to observe this warning could result in
injury to personnel and/or equipment damage.
NOTE: If PSM-8E is shipped with brackets installed, proceed to step 2.
To install the PSM-8E in 19-inch rack cabinet:
1. Remove and retain two (2) screws located at front left side and front
right side of PSM-8E chassis. Install right and left front brackets
(provided) on chassis by installing two (2) retained screws through
each bracket into chassis.
2. Carefully align PSM-8E between 19-inch rack mounting rails.
3. Install PSM-8E by installing two (2) screws through right front
bracket into rack and two (2) screws through left front bracket into
rack, using clip nuts and nylon washers (NOT provided) to secure, if
necessary.
To install the PSM-8E on table or other flat surface:
NOTE: Rubber feet are provided.
1. Carefully turn PSM-8E to side.
2. Install four (4) rubber feet:
• Separate rubber feet.
• Remove protective
paper from
adhesive surface
on rubber foot.
• Position and
secure each
rubber foot as shown.
3. Return PSM-8E to upright position.
1
3
2
PowerStar Express Multiplexer
Link
Status
TX
RX
PSM-8E
2X 2X
0 1
GROUP A
2X 2X
2 3
GROUP B
2X 2X
4 5
GROUP C
2X 2X
6 7
GROUP D