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Toshiba TOSLINE S20 User Manual

Page 16

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TOSLINE-S20 Active Star Coupler (ASC25) Instruction Manual

6F3B0360

TOSLINE S20

15

6.4

Function setting switch

Arrangement and names of function setting switches are given below.

Figure 6.3

Name

Description

Use

TX1

Setting the function of preventive
measures to single-wire breaking

Preventive measures to single-wire
breaking

TX10

Setting the function of preventive
measures to single-wire breaking

Preventive measures to single-wire
breaking

OPTST

Setting the function for determining
optical power

Optical power determination

A.TST

Setting the function for automatic
testing

Quality assurance test

Table 6.2

(1)

Setting switch "TX1"

Turn the switch to "ON" position, and the function of preventive measures to single-wire

breaking of CH1 is actuated. In the case that, when the function is in "ON" mode, the RX signal of

CH1 cannot be detected during a period of about 400 ms, the transmission of TX signal from CH1

is stopped.

On the port which entered the stop transmission, when the switch is turned to "OFF"

position after the circuit operation is resumed, the transmission is reactivated on receiving signals

from other port. When the switch is turned to "ON" position again, the function is also reactivated.

When the function is in "OFF" mode, TX continues to transmit signals even if RX signal

cannot be detected.

(2)

Setting switch "TX10"

Turn the switch to "ON" position, and the function of preventive measures to single-wire

breaking of CH10 is actuated. In the case that, when the function is in "ON" mode, the RX signal

of CH10 cannot be detected during a period of about 400 ms, the transmission of TX signal from

CH10 is stopped.