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NI 779129-01, 8 Lines, TTL-Compatible, 10 MHz, PXI-6133 PCI Multifunction I/O Device
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National Instruments 779129-01 PXI Multifunction I/O Device
The National Instruments 779129-01 (PXI-6133) is a simultaneous-sampling multifunction data acquisition module designed for PXI-based test and measurement systems. It is part of the NI S Series and is intended for applications that require high-speed, multichannel signal acquisition with consistent timing between channels.
The module provides eight analog input channels with 14-bit resolution and simultaneous sampling. Each channel can operate at high sampling rates, with the 779129-01 supporting rates of up to 2.5 MS/s per channel. Four selectable input voltage ranges—±1.25 V, ±2.5 V, ±5 V, and ±10 V—allow the inputs to be configured for different signal levels. The module also includes eight TTL-compatible digital I/O lines capable of operating at up to 10 MHz, along with two 24-bit counter/timers for event counting and timing functions. Analog and digital triggering are available for synchronizing data acquisition with other signals or equipment.
Unlike multiplexed DAQ devices that share a single analog-to-digital converter among multiple inputs, the 779129-01 uses a dedicated A/D converter for each analog input channel. This architecture allows all eight channels to be sampled at the same time, eliminating the channel-to-channel switching associated with multiplexed acquisition. The result is consistent timing across channels and reduced settling effects during measurements of rapidly changing signals.
The module includes onboard memory to support high-speed data acquisition and help maintain continuous signal capture when data transfers over the PXI bus cannot occur immediately. This is particularly useful when recording short-duration, high-bandwidth events or capturing multiple channels simultaneously.
The 779129-01 is suited to applications such as intermediate-frequency digitization, transient event capture, telecommunications testing, ultrasound and sonar measurements, and other test systems that require synchronized acquisition across multiple channels. Its simultaneous-sampling architecture also makes it useful for research and instrumentation applications where precise timing relationships between signals are important.
| Model Name | PXI-6133 |
|---|---|
| Part Number | 779129-01 |
| Part Type | PXI Multifunction I/O Module |
| Analog Input Channels | 8 channels |
| Analog Input Resolution | 14 bits |
| Maximum Sampling Rate | 2.5 MS/s per channel |
| Onboard Memory (FIFO) | 32 MS |
| Digital I/O Channels | 8 lines (TTL-compatible, 10 MHz) |
| Counter/Timers | 2 (24-bit) |
| Input Voltage Ranges | ±1.25 V, ±2.5 V, ±5 V, ±10 V (4 ranges) |
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