VTI Instruments Corp.
116 EX1200 Triggering
size of the schematic can be changed from to any of the following sizes: Tiny, Small (default),
Medium, and Large.
FIGURE 7-11: TYPICAL SWITCH SOFT FRONT PANEL
For switches that support read-back, the relays are color coded to provide the user an indication of
the relay states. The Color Legend provides the meaning of each color. Dark blue relays have
been commanded closed. This color should appear each time a relay is selected and working
properly. A light blue relays may be found on a latching relay. It indicates that, although the relay
has not been commanded closed, read-back indicates that it is closed. If a port turns red after
being commanded, this indicates that the relay has failed to close and may require repair. For
switches that do not support read-back, relays will appear dark blue for all states.
The main toolbar of the SFP provides the following functionality:
Control Mode: Three control modes are available for EX1200 modules.
Monitor Only: In this mode, the user can view the actions the various EX1200 components
while the module is actively performing automated test. The image is refreshed every 3 s.
In this mode, no modifications can be made. If a another user has established a session
with the EX1200, all other sessions established after that will be “Monitor Only” sessions
until the previous session has ended.
Synchronous Mode: In this mode, the user can manipulate the relays in the EX1200 in real
time. As the user clicks a port or sets a value and it affects the EX1200 at that time.
Asynchronous Mode: In this mode, the user may manipulate all relays, but the actions do not
occur until after the Apply button is clicked. Clicking on the Revert button will cause the
plug-in to revert to the state they were in the last time Apply was clicked.
Notes on Web Page Use
Before controlling relays, set the control mode to either Synchronous or Asynchronous.
Saved States button: This button allows the user to either save, load, or erase a switch
configuration. Saving a state allows the user to use the same switch set up at a later time.
When the Save button is clicked, a prompt will appear. The user selects a number, 0 through
127, from this field. Click OK to save the current state as the state number entered. To load or
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