Quatech RS-232 SYNCHRONOUS Network Card User Manual


 
CIRCUIT DD -Receiver Signal Element Timing(RxClk - DCE Source)
CONNECTOR NOTATION: RXCLK (DCE)
DIRECTION: From DCE
This signal, generated by the DCE, provides the DTE with element timing information
pertaining to the data transmitted by the DCE. The DTE can use this information for its received
data.
CIRCUIT CA - Request To Send
CONNECTOR NOTATION: RTS
DIRECTION: To DCE
This signal controls the data channel transmit function of the local DCE and, on a
half-duplex channel, the direction of the data transmission of the local DCE.
CIRCUIT CB - Clear To Send
CONNECTOR NOTATION: CTS
DIRECTION: From DCE
This signal indicates to the DTE whether the DCE is conditioned to
transmit data on the communication channel.
CIRCUIT CF - Received Line Signal Detector (CARRIER DETECT)
CONNECTOR NOTATION: CD
DIRECTION: From DCE
This signal indicates to the DTE whether the DCE is conditioned to receive
data from the communication channel, but does not indicate the relative quality of the data
signals being received.
CIRCUIT CD - DTE Ready (Data Terminal Ready)
CONNECTOR NOTATION: DTR
DIRECTION: To DCE
This signal controls the switching of the DCE to the communication channel. The
DTE will generate this signal to prepare the DCE to be connected to or removed from the
communication channel.
CIRCUIT LL - Local Loopback
CONNECTOR NOTATION: LLBK
DIRECTION: To DCE
This signal provides a means whereby a DTE may check the
functioning of the DTE/DCE interface and the transmit and receive sections of the local DCE.
MPA-100 User's Manual 12-2