VTI Instruments Metek EX1202 User Manual page 110

VTI Instruments Corp.
Scanlist Field
The Scanlist field allows for the creation of a list which can be sequentially executed once the
Scan and Step Trigger requirements have been met. Each scan step consists of two phases: the
setup phase and the sweep phase. The setup phase consists of general purpose switching and setup,
where the sweep phase performs measurements on its defined channels. In general, the following
sequence should be followed to create a scanlist and retrieve its measurement data:
1) Use the DMM Configuration Manager to create the required DMM configurations.
2) Click on the Add Step button.
3) Use the Setup Wizard to configure matrix switch channels.
4) Use the Sweep Wizard to set up measurements on multiplexer switch channels.
5) Select scan and step trigger inputs from the Trigger Properties field.
6) Initiate the scanlist using either the Initiate button.
7) Enable Get Continuous to populate the Results field as data is acquired, or use the Get
button to retrieve data as desired.
8) Review the data or save it to a file using the Save Data button.
If necessary, the sequence of the scanlist can be altered by clicking on the appropriate step or
sweep phase and using the Move Step Up or Move Step Down buttons. Once a scanlist has been
configured, it can be exported for use in another EX1200 system or to be saved for future use by
using the Export Scanlist button. When the Export Scanlist button is clicked, a string describing
the contents of the current scanlist is displayed. This string can be copied and pasted into the
VTEXScanner driver's list property to move the scanlist to a driver application. This same string
can be used to import a scanlist by clicking on the Import Scanlist button and pasting a string into
the dialog box that appears. Additional details for each part of the Scanlist field are provided
below.
Notes on Web Page Use
After clicking Initiate, it will take about 2 to 3 seconds for the scan to begin. No action can be
performed during this time. To monitor this, use the status indicator at the top left of the DMM
display. Once it moves from the Idle state, it is OK to perform other actions.
If a scan has been initiated and seems to be stuck in the Waiting For Scan Trigger In or Waiting
For Step Trigger In states, check the Trigger Properties field. In order for a scan to begin
immediately without interaction with other instruments, both inputs (the Scan Trigger In and Step
Trigger In) should be set to Immediate.
Setup Field
From the Setup field, the user defines the sequence of connections that will be made and/or
broken during the setup phase. After clicking on the white entry box, the user can 1) click on the
black configuration button on the right to start the Switch Wizard or 2) enter a valid setup sub-
step string directly into the box. The wizard provides the most common and useful options in an
easy to use interface. The buttons and menus available in the wizard provide the following
functions:
110
F 7-6: S W
IGURE WITCH IZARD
EX1200 Triggering