The table below shows general values for resistors in either pull-up or pull-down configuration.
Note: Not all devices in a single family will have these values. Please consult your specific device's specifications document for the most accurate information.
| Device Family/Name | Pull-up/Pull-down | Resistance |
|---|---|---|
| X Series |
Pull-down |
50 kΩ |
| M Series |
Pull-down |
50 kΩ |
| E Series 1 |
Pull-up |
50 kΩ |
| S Series 2 |
Pull-up |
10 kΩ - 100 kΩ |
| NI USB-6001/2/3 |
Pull-down |
47.5 kΩ |
| NI USB-6008/9 |
Pull-up |
4.7 kΩ |
| NI PCIe-6509 |
User-defined 3 |
|
| NI 4350/1 |
Pull-up |
10-100 kΩ |
| Legacy Devices | ||
| Device Name | Pull-up/Pull-down | Resistance |
| NI-6533/6534 |
User-defined 3 |
100 kΩ |
| PC-DIO-24/96 |
User-defined 3 |
100 kΩ |
| PCI-DIO-96 |
Pull-up |
100 kΩ |
| AT-DIO-32F |
Pull-Up (IN1, IN2 only) |
4.7kΩ |
| AT-MIO-16D/16DE-10 |
Pull-up |
100 kΩ |
| PC-LPM-16 |
Pull-up |
10 kΩ |
| DAQCard-700 |
Pull-up |
10 kΩ |
| 1 Some E Series devices have a second chip (the 8255) that provides additional digital lines. On these devices, port 0 uses a 50 kΩ pull-up resistor while ports 2, 3, and 4 use a 100 kΩ pull-up resistor. |
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| 3 The DIO-24/96 and the USB-6503/6509 cards allow jumper-selectable pull-up/pull-down configuration. The NI-6533/6534 family of devices similarly allows the user to configure pulled up or pulled down DIO via the DPULL pin. See your user manual for more information. |
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