© National Instruments Corporation
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