Configuring The Active Clock Edge - Patton electronics SmartNode Series Software Configuration Manual

14 • Serial port configuration
Example: Configuring the hardware port protocol
The following example enables X.21 as hardware port protocol for the serial interface on slot 0 and port 0 of a
SmartNode 2300 series device. Check that in the command output of show port serial Hardware Port is set to
X.21.
SN(cfg)#port serial 0 0
SN(prt-ser)[0/0]#hardware-port x21
SN(prt-ser)[0/0]#show port serial
Serial Interface Configuration
------------------------------
Port
State
Hardware Port
Transmit Edge
Port Type
CRC Type
Max Frame Length: 2048
Recv Threshold
Encapsulation
Configuring the active clock edge
Depending on the system configurations i.e. when using long cables, with certain modem types or data rates,
synchronization problems may occur on the serial port. In these cases, it may be necessary to configure the
clock edge on which data is transmitted by the SmartNode.
This procedure desribes how to set the active clock edge of the serial interface
Mode: Port serial
Step
1 node (prt-ser)[ slot/port ]# transmit-data-
on-edge positive
2 node (prt-ser)[ slot/port ]# transmit-data-
on-edge negative
164
: serial 0 0 0
: CLOSED
: X.21
: normal
: DTE
: CRC-16
: 1
: framerelay
Command
SmartWare Software Configuration Guide
Purpose
Configure the serial interface to transmit on the
positive edge of the clock (normal, default).
Configure the serial interface to transmit on the
negative edge of the clock (inverted).
Serial port configuration task list