Anda Telecom FE1/V.35 Manual do utilizador - Página 17

Procurar online ou descarregar pdf Manual do utilizador para Conversor de multimédia Anda Telecom FE1/V.35. Anda Telecom FE1/V.35 20 páginas. Interface converter

Imprimir página

Chapter 4 Troubleshooting

Normal working status: when FE1/V.35 interface converter works

normally, PWR (Green) indicator is bright, TXD (Yellow)、 RXD (Yellow)

indicators are blinking, the others are off.

When the device has failure, firstly make sure the failure range

according to the status of the indicators, then deal with the problem.

Trouble phenomenon: no reaction after electrifying

Trouble phenomenon: E1LOS indicator is bright

Trouble phenomenon: E1LOS indicator is off, but E1LOF indicator

is bright

User Manual

Diagnosis:

Examine the power supply, if it is DC model, make sure the

polarity, if the wire is connected inversely, please correct it! If it is

AC model, please make sure whether the power control switch is

open.

Exclusion:

Correct the power connection or open the power control switch.

Diagnosis:

The device is set Internal oscillator, loopback the input and

output ports by E1 cable, if this indicator is off, then mainly

examine the E1 cable.

Exclusion:

Examine whether the receiving and transmitting E1 cables are

inverse, if so please correct them; whether the E1 connectors are

loosened, if so please make them again.

Diagnosis:

This trouble is about due to three reasons hereinafter:

The core doesn't connect with skin of E1 input cable, or core

and skin are intercrossed, or only connect one thread of

120Ω cable.

The two sides are both set to internal clock, moreover the

time slots are different. Or one end is set to Internal clock,

the other end is set to line clock but isn't set to follow the

time slots of the opposite end automatically, or the time slots

is wrong.

The FE1/V.35 interface converter works at external clock

mode, but the clock rate provided by the external device is

different from that of it.

17-20