Input Channels

Input channels for multichannel acoustic and vibration measurements.

Features

• Fully conditioned input and output channels for microphones and accelerometers, charge transducers, CCLD transducers and other transducers acting as voltage sources. Support IEEE 1451.4 capable transducers with TEDS
• Overload indicator indicates incorrect conditioning and cable breaks on connected transducers
• Overload detection including out-of-band frequencies
• Automatic DC offset compensation

Functions and features available in the modules are determined by software implemented and downloaded from PULSE LabShop.

Independent Channels

The input channels on a module can be set up independently; you can set up the high-Pass filters and input gain separately and attach different types of transducers to different channels. The microphone polarization voltage can be switched on for all channels. (Note: Where polarization voltage is available, it is the same on all microphone channels in a module).

IEEE 1451.4 TEDS Transducers

Input modules supports IEEE 1451.4 capable transducers with standardised Transducer Electronic Data Sheets (TEDS). This feature allows automatic front-end and analyzer setup, based on information stored in the transducer. This information includes, for example, sensitivity, serial number, manufacturer and calibration date.

Transducer Conditioning Check

Input modules use two methods to detect transducer cable breaks or whether the wrong conditioning has been chosen. For microphones, their supply current is monitored. For DeltaTron® accelerometers (or microphones using DeltaTron® preamplifiers), the supply voltage is monitored. If conditioning errors such as a broken cable are detected, an error event is indicated as an overload on the specific channel.

Available Input Modules