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SmartNode Installation
10.12.4 Synchronous Serial Interface
The SmartNode 2300 supports both the V.35 and X.21 standard for synchronous serial interfaces,
with speeds up to 2 MBit/s. Devices that communicate over a serial interface are divided into two
classes:
•
Data Terminal Equipment (DTE): the device at the user end of the user-to-network interface.
The DTE connects to a data network via data DCE, and typically uses clocking signals
generated by the DCE.
•
Data Communications Equipment (DCE): the device at the network end of the user-to-
network interface. The DCE provides a physical connection to the network, forwards traffic,
and provides a clocking signal used to synchronize data transmission between DCE and
DTE devices.
The most important difference between these two types of device is that the DCE device supplies the
clock signal that paces the communications on the interface. Note that a SmartNode 2300 is
functioning as a DTE.
The synchronous serial port is labeled SERIAL 0/0 on the SmartNode 2300. Before you connect a
device to it you need to check the following:
•
Confirm that the device that you are connecting the SmartNode to is a DCE that provides a
clock signal on the synchronous serial port.
•
Type of connector, male or female, required when connecting to the device port
•
Signaling protocol; the device requires X.21 or V.35.
10.12.5 Software Tools
Install a serial communication and Telnet application on your PC or workstation. You will use this
link to configure the software on your SmartNode 1000 or 2000 series.
10.13 Power Source
If you suspect that your AC power is not clean, for example if room lights flicker often or there is
machinery with large motors nearby, have a qualified person test the power. Install a power
conditioner if necessary.
10.13.1 Location and Mounting Requirements
There are three mounting possibilities for your SmartNode 1000 or 2000 series:
•
Placed on a desktop
•
Rack-mounted (SmartNode 2000 series only)
•
Wall-mounted (SmartNode 1000 series only)
Choose the mounting method that is appropriate for your location and which offers best access to the
cables.
10.13.2 Access to Chassis
Allow sufficient space at the rear of the chassis for cable connections. In addition you should
consider the need to access the chassis for future upgrades, maintenance and troubleshooting.
Hardware Installation Guide, Revision 3.11
