The PXIe‑7846 features a user-programmable FPGA for high-performance onboard processing and direct control over I/O signals to ensure complete flexibility of system timing and synchronization. You can customize these devices with the LabVIEW FPGA Module to develop applications requiring precise timing and control such as hardware‑in‑the‑loop testing, custom protocol communication, sensor simulation, and high-speed control.
The PXIe‑7846 features a dedicated A/D converter (ADC) per channel for independent timing and triggering. This design offers specialized functionality such as multi-rate sampling and individual channel triggering, which are outside the capabilities of typical data acquisition hardware. The PXIe‑7846 also includes peer-to-peer streaming for direct data transfer to other PXI Express modules.
Analog Input
| Number of channels | 8 |
| Input modes (software-selectable; selection applies to all channels) | DIFF, NRSE, RSE |
| Type of ADC | Successive approximation register (SAR) |
| Resolution | 16 bits |
| Conversion time | 2 µs |
| Maximum sampling rate (per channel) | 500 kS/s |
Input impedance
Powered on
1.25 GΩ ║ 2 pF
Powered off/overload
4 kΩ minimum
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| Input signal range (software-selectable) | ±1 V, ±2 V, ±5 V, ±10 V |
| Input bias current | ±5 nA |
| Input offset current | ±5 nA |
| Input coupling | DC |
Overvoltage protection
Powered on
±42 V maximum
Powered off
±35 V maximum
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| Range (V) | Measurement Voltage, AI+ to AI- | Maximum Working Voltage (Signal + Common Mode) |
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| Minimum (V)[1] | Typical (V) | Maximum (V) |
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| ±10 | ±10.37 | ±10.5 | ±10.63 | ±12 V of ground |
| ±5 | ±5.18 | ± 5.25 | ±5.32 | ±10 V of ground |
| ±2 | ±2.07 | ±2.1 | ±2.13 | ±8.5 V of ground |
| ±1 | ±1.03 | ±1.05 | ±1.06 | ±8 V of ground |
Analog Output
| Output type | Single-ended, voltage output |
| Number of channels | 8 |
| Resolution | 16 bits |
| Update time | 1 μs |
| Maximum update rate | 1 MS/s |
| Type of DAC | Enhanced R-2R |
| Range | ±10 V |
| Output coupling | DC |
| Output impedance | 0.5 Ω |
| Current drive | ±2.5 mA |
| Protection | Short circuit to ground |
Overvoltage protection
Powered on
±15 V maximum
Powered off
±10 V maximum
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| Power-on state | User-configurable |
| Power-on glitch | 1 V for 1 µs |
| Range (V) | Measurement Voltage, AO+ to AO GND |
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| Minimum (V)[2] | Typical (V) | Maximum (V) |
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| ±10 | ±10.1 | ±10.16 | ±10.22 |