M e r i d i a n I I U s e r M a n u a l
19
"Smarter Timing Solutions"
Chapter
Three
Console Port Control and Status
This chapter describes Meridian II control and status commands used via the Linux console. The
console is accessed via any of the Ethernet ports or the RS-232 serial port. Meridian II supports sev-
eral application-specific commands for configuration and for monitoring the performance and status
of the Linux and GPS Subsystems.
You do not need knowledge of Linux commands in order to operate Meridian II. However, Merid-
ian II does support a subset of the standard Linux commands and utilities and it uses the
bash
shell,
which is the Linux standard, full-featured shell. A wealth of information is available from a variety of
other sources on Linux.
Meridian II-specific commands will be described in this chapter. For a brief description of some of
the most useful Unix/Linux commands, see
Appendix C - Helpful Linux Information
.
Console Ports
Three interface ports are available on Meridian II. Two are 10/100/1000Base-T Ethernet ports and
one is an RS-232 serial port. Network cables and a serial cable are provided with each Meridian II
shipment. The serial cable is wired as a null-modem adapter and can be used to connect Meridian II
to the serial port on your computer. Detailed specifications on the ports, including the RS-232 pinout,
are in
Appendix K - Specifications
.
General Linux
Operation
You do not need to know Linux in order to operate Meridian II. However, for those interested, the
command shell used by Meridian II is the Linux standard:
bash
. All commands and file names are
case sensitive, which is standard for Unix-like operating systems. For a brief description of some of
the most useful Unix/Linux commands, see
Appendix C - Helpful Linux Information
.
If you are unfamiliar with Unix-like operating systems, and you would like to be able to more closely
monitor or optimize the performance of your Meridian II then you should consult good Linux refer-
ence books or the Linux Documentation Project at::
Summary of Contents for Meridian II
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