Stanford Research Systems RGA100, Operating Manual And Programming Reference

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5-14 RGA Head and Scan Parameters
SRS Residual Gas Analyzer
RGA Head and Scan Parameters
The following topics describe how a user might change any of the RGA Head or scan parameters. For
specific command information please use the On-Line Help for the RGA Program.
Note:
For detailed information and command description of the RGA program please refer to the RGA
On-Line Help files provided with the program disks. The RGA help system includes a detailed
description of all the features, procedures and commands available in the program.
Changing Scanning Parameters
Every display mode has scan parameters that are used to setup the display and to acquire
data form the RGA head. Some modes such as the P vs T, Table, and Annunciator
modes share the same scan parameters. For example, if a scan parameter is changed in
table mode, this change will be reflected in the P vs T and annunciator mode when those
modes are activated.
It is not necessary to be connected to an RGA Head to modify the scan parameters, the
head will be updated when a connection is established.
To change the scan parameters do the following:
1. Select the desired display mode from the Mode menu or by clicking one of the mode
buttons.
2. Select Scan parameters from the Scan menu (the applicable parameters will be
enabled).
If the user accepts the new parameters, the display is recreated using the new parameters
and, if an RGA Head is connected, its parameters get updated also.
Note:
Changing scan parameters will result in loss of all displayed data on the screen.
Use the File menu to save the data in one of the formats available before changing
any scan parameters.
Changing Head Parameters
The head parameters menu items are available only when there is an SRS RGA Head
connected and turned on. The head parameters are variables that depend on the actual
RGA Head and reside in non-volatile memory in the RGA Head circuitry. These
parameters are read from the Head when a connection is established and vary from one
Head to another due to physical properties, electronic properties, and aging of the unit.
To change or view any of the Head parameters, do the following:
1. Connect to a head using the Connector List Setup from the Utilities menu.
2. Select an item from the Head menu.