Remote Logging from Unix Workstation

A Technical Publication of Visidaq Solutions, Inc.

Logging Into Visidaq 6400B Remotely
From a UNIX Workstation with
X-Windows

You can operate the Visidaq 6400B Enterprise Class Data Acquisition System remotely from any UNIX Workstation which supports X-Windows and is connected to the Visidaq 6400B system via a Local Area Network connection. This feature provides a valuable timesaving capability for customers who need to locate the data acquisition system in distant test cells and have the ability to collect, review, analyze and print sensor data from their desktops. Network printing sends reports to a local printer.

Additionally, this feature provides the ability for multiple operators to be logged onto one data acquisition system simultaneously. It is possible for one operator to be using the system from its local display monitor while other operators are using it remotely. It is also possible for multiple operators to be logged in remotely with no local operator present. This feature provides a clear advantage over standalone systems by eliminating time consuming travel between buildings and test sites when the need for data collection and access is urgent.

PREREQUISITES

Password Setup
A password must be setup on the Visidaq 6400B system for the Visidaq user account before this feature will work. Use SAM to set up the password. Open the System_Admin application group in the Application Manager and double click SAM. In the SAM main window double click Users and Groups. Double click Users. Select the Visidaq Login Name and click on Actions. In Actions click on Modify then on Modify Password. Choose a password and record it in a secure place. Enter your new password and follow the prompts to click on OK's and File Exit's back out of SAM. Additional information on password setup can be found in the HP CDE Getting Started Guide.

Verify Hostname Setup
Each Visidaq Model 6400B and Workstation to be used for remote log on must contain each other's hostnames and IP addresses in their respective Host files.

Verify Communications Path
Use the ping command followed by the hostname of the other system to verify that a network connection is established between systems. Test this connection in each direction to make sure the connections work first.

PROCEDURE

You will need to know the hostname for the machine from which you are logging in and the hostname of the Visidaq 6400B system. The "hostname" command given at the shell prompt will yield this information for the machine from which it is performed. In the following examples,

"remhost" is the hostname of the remote workstation;
"visihost" is the hostname of the Visidaq 6400B system;
"pswd" is the Visidaq account password on the Visidaq 6400B system.

Commands you enter are enclosed in quotes (don't type the quotes). Before logging on, you must be sure that the remote host will accept requests from the Visidaq client. To ensure this, enter the following at the shell prompt: (this needs to be done only once after each boot-up at each remote workstation)

$"xhost +"

To log onto the Visidaq 6400B system type the following commands:

$"rlogin visihost -| visidaq"
Password:"pswd"
$"export DISPLAY=remhost:0.0"
$"visidaq"

A Visidaq window should start up at the remote machine. Note that if only one software license has been purchased, you can only run Visidaq from one location at a time; be that either a remote workstation or the Visidaq 6400B itself. The purchase of additional Visidaq Pro X/ime software licenses will permit simultaneous operation.

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