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Chapter 3. Operation

3-4 IQ Probe User Manual 61200214L1-20

LED Descriptions

The IQ Probe has seven LED indicators: RS, CS, TD, RD, CD, TR, and

ALM. These LEDs are identified as follows:

RS: Request to Send

Reflects the status of the RS pin of the DTE/DCE interface.

CS: Clear to Send

Reflects the status of the CS pin of the DTE/DCE interface.

TD: Transmit Data

This LED is active when the IQ Probe DTE/DCE port is transmitting data.

RD: Receive Data

This LED is active when the IQ Probe DTE/DCE port is receiving data.

CD: Carrier Detect

This LED reflects the status of the CD pin of the DTE/DCE interface.

TR: Data Terminal Ready

This LED reflects the status of the TR pin of the DTE/DCE interface.

ALM: Alarm

This LED is active when an alarm condition exists (such as when the net-

work frame relay signaling state is down).

The LEDs reflect the states of either the DTE side or the DCE

side. This is selectable in the IQ Probe

ONFIGURATION

(CONFIGURATION ->SYSTEM -> SYSTEM LEDS

REFLECT).

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ADTRAN 1200214L1 Spezifikationen Seite 44