LEDs (CR4 - CR11)
The LED labeled CR4 is a power indicator. The other seven
LEDs display EIA-232 signal activity. The following table
describes the specific signal associated with each LED.
CR5
CR6
CR7
CR8
CR9
CR10
CR11
18
LED
Tx (Transmit Data)
Rx (Receive Data)
CTS (Clear to Send)
RTS (Request to Send)
DTR (Data Terminal Ready)
DSR (Data Set Ready)
DCD (Data Carrier Detect)
Signal
Digi One EM Hardware Reference
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