Spider-80X Dynamic Measurement & Vibration Control

Description

The Spider-80X is designed for applications in three fields: dynamic data acquisition, vibration test control, and machine monitoring. Each front-end features eight analog input channels and two channels that may be software selected as analog outputs for vibration control or tachometer inputs for the analysis of rotating machinery.

A single Spider-80X front-end is a complete two output controller with the same high quality patented dual ADC input technology of the Spider-81 series. The Spider-80X inputs provide single end/differential and AC/DC/IEPE coupling choices; charge mode is an available option that can be installed at the factory. The Spider-80X also provides the same time sync Ethernet connectivity and has 4 GB flash memory for data and program storage.

The Spider-80X front-ends are onsite swappable. Each front-end is metal-shielded. The user can quickly configure a system with an arbitrary number of front-ends.

 

High Precision Front-end Design
The Spider-80X analog input channels provide extremely high precision measurements. Each channel has single-ended or differential AC or DC input coupling. It can also provide IEPE (ICPTM) input mode (AC coupling with a 4 mA constant current from a 22 VDC source) for use with industry-standard accelerometers with built-in amplifiers. The ability to read TEDS (Transducer Electronic Data Sheet) identification from the attached transducer completes the channel’s compliance with IEEE 1451.4. Each channel provides an unprecedented dynamic range of 175 dBFS. This is accomplished by applying two 24-bit analog-to-digital converters to each channel and combining their outputs in accordance with our United States Patent number 7,302,354.

In the Spider-80X, built-in charge amplifiers are available.

Time Accuracy and Synchronization
The Spider-80X complies with the IEEE 1588 Precision Time Protocol (PTPv2). It also supports integration with a grandmaster clock, enabling sub-microsecond time-stamping accuracy. This allows for multiple physically disconnected Spider-80X units to be synchronized within a 100-nanosecond time accuracy. The Spiders can maintain a phase match of less than 1 degree making it possible to compute frequency response functions, cross-spectra, autocorrelation, and various other signal analyses with high precision.

Black Box Mode
Black Box mode enables Spider-80X operation without a PC. In this mode, a PC is used only to configure the control system before the system starts operation and to download data after the test is completed. During the test, the data acquisition system operates autonomously, according to a preset schedule or in response to external events such as input trigger or digital input.

Simple Network Connection
Ethernet connectivity allows Spiders to be located far from their host PC. This distributed structure greatly reduces noise and electrical interference in the system.