Description
The National Instruments SCXI-1531 Sound and Vibration Input Module, with Part Number 777966-31, features a ground referenced mode that can be activated when the accelerometer’s signal lines are not connected to ground, effectively preventing noise by stopping mode potential from accumulating through the input amplifier. This module requires a base output rate that is at least ten times greater than the highest channel transmission capacity setting to ensure accurate data capture, particularly in noisy environments where even higher output rates might be necessary.
For example, with channel transfer speeds of 2.5 kHz and 5.0 kHz, the minimum scan rate should be no less than 50 kHz. The SCXI-1531 also supports a multiplexed mode that allows for sophisticated filtering operations and the ability to customize the order in which channels are scanned. A module filter list determines which module outputs are directed to the SCXIbus during scanning, with the flexibility to handle up to 512 channels per chassis. Moreover, channels can undergo arbitrary filtering, appearing in any order and multiple times within a single scan, with the scan list pointer automatically wrapping around in the case of multiple scans.
Despite its obsolete status as announced by National Instruments, the SCXI-1531 module remains available for purchase and repairs, ensuring continued support for existing systems.
| Feature | Description |
|---|---|
| Product Name | National Instruments SCXI-1531 Sound and Vibration Input Module |
| Part Number | 777966-31 |
| Configuration Mode | Ground referenced mode available when accelerometer signal lines are floating to ground |
| Noise Prevention | Prevents accumulation of mode potential through input amplifier |
| Base Output Rate | Minimum 10 times the highest channel transmission capacity setting |
| Noise Consideration | Higher output rates may be required in extremely noisy situations |
| Example Channel Transfer Speeds | 2.5 kHz, 2.5 kHz, 5.0 kHz |
| Minimum Scan Rate | 50 kHz |
| Multiplexed Mode | Allows for filtering operations and channel order customization |
| Module Filter List | Controls module output to the SCXIbus during a scan |
| Channel Limit per Chassis | Up to 512 channels |
| Arbitrary Filtering | Channels can be filtered in any order and appear multiple times in a scan |
| Scan List Pointer | Automatically wraps around for multiple scans |
| Obsolete Status | Announced by National Instruments, available for purchase and repairs |
Question 1: How does the ground referenced mode of the National Instruments SCXI-1531 Sound and Vibration Input Module contribute to noise prevention, and what are the necessary base output rates for accurate data capture in relation to channel transmission capacities?
Answer 1: The recommended minimum base output rate for the National Instruments SCXI-1531 Sound and Vibration Input Module should be at least ten times greater than the highest channel transmission capacity to ensure precise data capture, particularly in noisy conditions.
Question 2: What is the purpose of the ground referenced mode in the National Instruments SCXI-1531 Sound and Vibration Input Module, and what minimum base output rate is required to ensure accurate data capture in noisy environments?
Answer 2: The ground referenced mode in the National Instruments SCXI-1531 Sound and Vibration Input Module is designed to prevent noise by stopping mode potential from accumulating through the input amplifier, and to ensure accurate data capture in noisy environments, the module requires a minimum base output rate that is at least ten times greater than the highest channel transmission capacity setting, which means a base output rate of at least 50 kHz for channel transfer speeds of 5.0 kHz.
Question 3: Given that the National Instruments SCXI-1531 Sound and Vibration Input Module features ground referenced mode to reduce noise, what is the recommended minimum base output rate relative to the highest channel transmission capacity to ensure precise data capture in noisy conditions?
Answer 3: The National Instruments SCXI-1531 Sound and Vibration Input Module utilizes a ground referenced mode to prevent noise interference when the accelerometer’s signal lines are not connected to ground, and it maintains accuracy in noisy environments by requiring a base output rate that is at least ten times greater than the highest channel transmission capacity setting, with the provision for even higher output rates if necessary.
Question 4: What is the recommended minimum base output rate for the National Instruments SCXI-1531 Sound and Vibration Input Module when using a channel transfer speed of 5.0 kHz, and what unique feature does this module offer to prevent noise in noisy environments?
Answer 4: The ground referenced mode of the National Instruments SCXI-1531 Sound and Vibration Input Module contributes to noise prevention by preventing mode potential from accumulating through the input amplifier when the accelerometer’s signal lines are not connected to ground, and for accurate data capture, the module requires a base output rate that is at least ten times greater than the highest channel transmission capacity setting, necessitating a minimum scan rate of 50 kHz for channel transfer speeds of 2.5 kHz and 5.0 kHz.
Question 5: What measures does the National Instruments SCXI-1531 Sound and Vibration Input Module take to prevent noise interference in its measurements, and how does it maintain accuracy in noisy environments?
Answer 5: The recommended minimum base output rate for the National Instruments SCXI-1531 Sound and Vibration Input Module when using a channel transfer speed of 5.0 kHz is 50 kHz, and it offers a ground referenced mode as a unique feature to prevent noise in noisy environments.
