Tektronix DAS 9221 Option 04, User Manual

Page: 147 / 276

Reference
3–66
DAS System User Manual
2. Define a signal in the Signal Definition overlay of the Cluster Setup menu.
The signal should be an output signal from the acquisition module and an
input signal to the pattern generator module.
3. Set up the event in the Trigger menu for the acquisition module to identify a
word event, counter value, or any other event appropriate for your applica-
tion. This event will cause the pattern generator to change its output.
4. Set up the action in the Trigger menu for the acquisition module to assert or
pulse the signal defined in step 2.
5. Enter the External Control overlay of the Configuration menu for the pattern
generator. Set the IRQ Jump or Ext Jump to be enabled when the signal
defined in step 2 occurs.
6. Program the algorithmic actions of the pattern generator Program menu
using the If IRQ Jump or If Ext Jump commands to cause the pattern to
change at an appropriate point in the output data.
You can set up the system to send or receive a TTL level signal to or from external
equipment such as an oscilloscope. You can use the Sync Out signal from the SMB
connector on the back edge of the acquisition module. You can access these
connectors through the slots in the rear panel of the mainframe. For a description of
how to use the Sync Out signal, refer to your module user manual.
Another way is to use a 92C02 Module in slot 8 of the lowest-numbered
mainframe. To send or receive a signal using the 92C02 Module, follow these
first two steps:
1. Form a cluster containing an acquisition module in the Cluster Definition
overlay of the System Configuration menu.
2. Access the Signal Definition overlay of the Cluster Setup menu, add a
signal, and set Components to Internal, Type to Normal, and Line to Don’t
Care.
To send a signal (with the Event In signal unused), continue with these steps:
3. Define the signal added in step 2 as an Output from the acquisition module
to initiate the signal being sent to the external equipment.
4. Change the Components field to External, Event Out to be Hi True or Lo
True for the 92C02 Module, and exit the overlay.
5. In the Trigger menu, set the event for a word event, counter value, or any
other event appropriate for your application.
6. In the Trigger menu, set the action to Assert or Pulse the signal defined in
step 3 when the event occurs.
Send an Output Trigger
Signal to External Test
Equipment