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Chapter 3. Operation
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 trans-
mitting data.
RD: Receive Data
This LED is active when the IQ Probe DTE/DCE port is receiv-
ing 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 network 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 Configuration menu
(CONFIGURATION ->SYSTEM -> SYSTEM LEDS REFLECT).
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IQ Probe User Manual
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