NI-9775 Getting Started
- Updated2023-02-23
- 2 minute(s) read
NI-9775 Getting Started
NI-9775
Block Diagram
- The shell of the BNC connects to CHASSIS GND.
- The four channels of the NI-9775 share the clock circuit and operate simultaneously.
- The NI-9775 has two separate data engines operating simultaneously for each channel: the continuous stream engine and triggered record engine.
- The module waits for a trigger event, fills the circular buffer with the configured set of data (called a record), then streams the entire record from the module to the chassis.
- The analog filter allows you to select 10 MHz or 5 MHz bandwidth.
- The software-selectable digital decimation filter improves resolution and alias rejection.
- The ADC samples the analog signal continuously at 20 MS/s.
NI-9775
Timing Modes
The NI-9775 has two timing modes: high-speed and high-resolution.
High-speed mode turns off the digital decimation filter on all channels and enables you to set the analog filter per channel.
High-resolution mode turns on both the analog filter and digital decimation filter for all channels.
Acquisition Modes
The NI-9775 has three acquisition modes: continuous mode, record mode, and advanced mode.
In continuous mode, the NI-9775 transfers real-time data to the chassis at an aggregate rate of 4 MS/s across all channels.
In record mode, the NI-9775 stores samples into onboard memory at up to 20 MS/s then transfers the data to the chassis at a slower rate.
In advanced mode, the NI-9775 combines the functionality of continuous mode and record mode to enable more complex triggering schemes based on the continuous data.
NI-9775
Pinout
Signal | Description |
---|---|
AI | Analog input signal connection |
CHASSIS GND | Chassis ground connection |
Single-Ended Connections
NI-9775 Connection Guidelines
Make sure that devices you connect to the NI-9775 are compatible with the module specifications.