Inalp Networks SmartWare Release 2.10, Software Configuration Manual

Page: 134 / 357

134 Serial Port Configuration
Software Configuration Guide Release 2.10, Revision 1.00
SN(prt-ser)[0/0]# hardware-port x21
SN(prt-ser)[0/0]# show port serial
Serial Interface Configuration
------------------------------
Port : serial 0 0 0
State : CLOSED
Hardware Port : X.21
Transmit Edge : normal
Port Type : DTE
CRC Type : CRC-16
Max Frame Length: 2048
Recv Threshold
: 1
Encapsulation : framerelay
16.7 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.
Procedure
To set the active clock edge of the serial interface
Mode
Port serial
Command Purpose
Step 1
node (prt-ser)[ slot / port ]# transmit-data-on-
edge positive
Configure the serial interface to transmit
on the positive edge of the clock (normal,
default).
Step 2 node (prt-ser)[ slot / port ]# transmit-data-on-
edge negative
Configure the serial interface to transmit
on the negative edge of the clock
(inverted).
Example: Configuring the Active Clock Edge
The following example enables sending of the data on the negative edge on slot 0 and port 0 of a
SmartNode 2300 series device. Check that in the command output of
show port serial Transmit Clock
is set to
inverted
.
SN(cfg)# port serial 0 0
SN(prt-ser)[0/0]# transmit-data-on-edge negative
SN(prt-ser)[0/0]# show port serial
Serial Interface Configuration
------------------------------
Port : serial 0 0 0
State : CLOSED
Hardware Port : X.21
Transmit Edge : inverted
Port Type : DTE
CRC Type : CRC-16
Max Frame Length: 2048
Recv Threshold
: 1
Encapsulation : framerelay