RLH Industries 16 Channel T1 Over Ethernet Multiplexer System Guia do Utilizador descarregar pdf (Página 115)

Power supply issues

PWR LED remains off

The iMux system isn’t receiving proper power.

AC power

• Check AC power using a multimeter.

DC power

• Check power at the DC terminals using a multimeter.

• No AC power can be detectable on the DC power line.

• Check wiring for nicking, scoring or poor termination.

Verifying fiber cable

Verify the fiber cable when incoming signal is good, but the other end indicates that a fiber signal is not being

received. To test the fiber cable, use a fiber optic cable test set with light source and meter.

iMux System Fiber Test Specifications

Fiber Type

Wavelength

Attenuation

Maximum Distance

Multimode

850nm

10dB max.

1.5 miles (2.5km)

Single-mode

1310nm

8dB max.

9 miles (15km)

Single-mode

1310nm

8dB required min. loss

37 miles (60km)

When reconnecting fiber cables, check the correct connection of the fiber cable.

Module installation

The iMux comes standard with modules pre-installed and pre-configured. When replacing or installing any

modules, use caution to ensure that

• The modules are fully inserted without damaging any components on the circuit board

• The locking screws are completely seated and hand tightened only

• The breakout adapter cables (where used) are properly connected and seated

• The optical modules are protected at all times with dust cap or ﬁber connector installed

• Special handling requirements are observed

If the iMux module configuration is changed, or modules are moved to a different tributary slot, the system must

be reconfigured accordingly using the VT100 management interface.

Troubleshooting! 115

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RLH Industries 16 Channel T1 Over Ethernet Multiplexer System Guia do Utilizador Página 115