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3 connecting to the serial port – Guralp Systems CMG-DCM build <10,000 User Manual

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Acquisition Modules and Platinum Firmware

Initial set-up

password; the default password is rootme. Note that no characters will be
echoed to the screen as you type the password.

Once connected, you will be presented with a shell prompt which is ready to

accept commands. The shell prompt contains the serial number of the
acquisition module.

When you are finished with your SSH session and want to disconnect, type
“exit” at the command line, or

+

.

PuTTY allows you to save multiple sessions, along with a default login

identity and screen colours for each. See the PuTTY manual for more details.

Note: If you plan to use ssh regularly to communicate with a

acquisition module, you can configure the system to bypass the
password prompt when logging in from a list of pre-authorised

computer/user combinations. This involves generating a unique
key-pair (for the user and PC which will access the acquisition

module) and then copying the public half of the key-pair to the
acquisition module. This can be more secure than passwords and is

fully documented at

http://suso.org/docs/shell/ssh.sdf

. For details

about uploading your keys to the CMG-EAM, see section 7.6 on

page 90.

3.3

Connecting to the Serial Port

A number of acquisition modules have dedicated a 9-pin 'D' console port

connector located under its lid. It can be connected via a serial (RS232) cable
to a PC. See section 16.5.5 on page 277 for the pin-out.

Some acquisition modules without a dedicated console port connector are
supplied with 'Y' cables that connect to the DATA OUT port, your PC and a

power supply.

Acquisition modules with a GPIO connector are provided with a blue serial

cable, terminating in a female DE9 connector. This gives access to the
module's console.

Once you have connected the serial cable, you can run either Scream or a
terminal emulator to interact with the acquisition module.

MAN-EAM-0003

30

Issue E - February 2014

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