Trigger Input, Shutdown Input, And Breakpoint Output Circuits; Figure 5-5. Trigger Input Circuit; Figure 5-6. Shutdown Input Circuit; Figure 5-7. Breakpoint Output Circuit - National Instruments FW-7344 Hardware User Manual

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Trigger Input, Shutdown Input, and Breakpoint
Output Circuits
Figures 5-5, 5-6, and 5-7 show a simplified schematic diagram of the
circuits used by the trigger inputs, shutdown inputs, and breakpoint outputs
for signal buffering.
3.3 kΩ
From the external
connector
trigger pins
3.3 kΩ
From the external
connector
shutdown pin

Figure 5-6. Shutdown Input Circuit

3.3 kΩ
To the external
connector
breakpoint pins

Figure 5-7. Breakpoint Output Circuit

Vcc
1 kΩ
1/8 W
DGND

Figure 5-5. Trigger Input Circuit

Vcc
1 kΩ
1/8 W
DGND
Vcc
74AS760
5-11
Chapter 5 Signal Connections
To the trigger
circuits
74HC244
To the shutdown
circuits
74HC244
From the
breakpoint
circuits
7344/7334 Hardware User Manual