Rohde & Schwarz 1094.0006.50, Руководство по эксплуатации

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Interfaces/Annex A CTS55
1094.0006.55 A.2 E-3
Lines
1. Data lines
RxD (receive data) and TxD (transmit data)
The transmission is bit-serial in the ASCII code starting with the LSB.
The two lines are necessary as the minimum requirement for a transmission; however, no hardware
handshake is possible, but only the XON/XOFF protocol.
2. Control lines
DCD (Data Carrier Detect),
active LOW.
Input; using this signal, the data terminal recognizes that the modem of the remote station receives
valid signals with sufficient level. DCD is used to disable the receiver in the data terminal and prevent
reading of false data if the modem cannot interpret the signals of the remote station.
DTR (Data Terminal Ready),
active LOW,
Output indicating that the data terminal is ready to receive data.
DSR (Data Set Ready),
active LOW,
Input indicating that the external device is ready to receive data.
RTS (Request To Send),
active LOW.
Output that can be used to indicate the readiness to receive data.
CTS (Clear To Send),
active LOW.
Input used to enable the transmission of data.
RI (Ring Indicator),
active LOW.
Input; RI is used by a modem to indicate that a remote station wants to set up a connection.
Default settings
The serial interface is set to the following values:
Table A3-1 Default setting
Parameter Setting value
Baud rate 9600 baud
Data bits 8 bits
Stop bits 1 bits
Parity none