Teledyne LeCroy USB Chief - Users Manual - Manual (Page 44)

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Chief User’s Manual CATC Version 1.7
Using the Blue Dot Menus
Within the Actions screen, you can configure the external signals and Counters by
clicking the blue dot in the upper left corner of each button. Once you have made
your settings, you can save them for later use or you can set them as your default
settings.
Setting External Triggers
Use the blue dot found on all Event buttons (except Frame Patterns and External
Signals) to set the parameters for External Triggers.
Click the blue dot in the upper left corner of an Event button.
— Enable/Disable External Trigger Output: Allows the event to be used
for other actions such as Triggering, Filtering, or Restarting (toggles
between Enable and Disable).
— Enable External Trigger Output Only: Makes the event an output signal
only which cannot be used for other actions. To clear External Trigger
Output Only, you must drag the elastic arrow to an Action button. (See
the section on Elastic Arrow.)
— External Trigger Form: Allows you to select low pulse, high pulse, or
toggle as the form for your External Trigger.
Output Signaling Pin Assignments
Clicking the blue dot in the upper left corner of each Events button enables one of
each of the following events to appear as an output signal on its corresponding
output pin on the External Interface Breakout Board.
Table 2: Output Signaling—Pin Assignments
Pin Signal Description
14 OUT 0 Errors
15 OUT 1 Bus Conditions
16 OUT 2 First Token Pattern
17 OUT 3 First Packet Identifier
18 OUT 4 Device Requests
19 OUT 5 Data Pattern