The Model 6729 is a Voltage IEPE Amplifier Filter Digitiser I/O Module. Firstly, it contains eight channels. Each provides excitation for IEPE transducers, programmable AC or DC coupled differential instrumentation amplifier. As well as low pass filters and analog to digital converters. In addition, each channel has a buffered analog output. Therefore, making it selectable for a wideband or filtered response.
Amplifier / Digitiser per channel Architecture
Secondly bus using the amplifier / digitiser per channel architecture, the 6729 provides a high bandwidth and digitising speed with excellent channel-to-channel time correlation. Due to its high accuracy, it removes crosstalk between channels. It also can be used to condition or digitise signals from piezoelectric transducers with built in or in-line charge amplifiers and other AC or DC voltage measurements. Input attenuation and current inputs including 4-20mA current loops are available.
Powering IEPE transducers
An adjustable 2-20mA current source with 24 Volt compliance is provided for powering IEPE transducers. In addition, gain is programmable from 1 to 5000 providing ± 2mV to ±10 Volts full scale input sensitivity. Zero and gain calibrations are automatic.
Low Pass Filter for Data Sampling and Plug-in Resistor Module for wanted frequency
Finally, the bandwidth is DC, 1 Hz when AC coupled to 100 kHz. The low pass filter may be employed to minimise alias errors for data sampling. A plug-in resistor module establishes the wanted frequency. Filter frequency may be specified at the time of ordering. Frequency modules available from 250 Hz to 50 kHz.
Key Features of the Voltage IEPE Amplifier I/O Modules 6729 include
- AC or DC Coupled inputs
- 2 to 20mA current excitation
- Gains 1 to 5,000 with 0.05% accuracy
- 4, 6 or 8-pole low pass filters
- 100 kHz sign bandwidth
- Up to 200 kS/s per channel with 16-bit resolution
- Buffered ±10 V analog output
- Operates with 6700U High Speed Data Acquisition and Control System Enclosure
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