Idiomas disponibles
Idiomas disponibles
4 Measurement Tutorials
Using external pull-up
In general, an external pull-up is required only when you want to set the output "high" value greater than TTL levels.
For example, to use a +12V external power supply, the value of the external pull-up resistor is calculated as follows:
The value of the logic "high" level with the external 24 kΩ pull-up resistor is calculated as follows:
Driving external switches
You can use two digital output channels to control an external switch. For example, you can drive the Keysight 876X
series of microwave switches using an external power supply and two digital output channels. The state of the 2-to-
1 multiplexer is changed by setting the appropriate output bit low (0).
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Keysight DAQ970A/DAQ973A User's Guide
