Spectrum Spectral Analysis and High-Speed Analog Input Module
Maximize Your
High-Speed Dynamic Applications

Designed for analog measurements
weather applications supported water applications supported energy applications supported gas flux and turbulence applications supported infrastructure applications supported soil applications supported

Overview

The Spectrum Spectral Analysis and High-Speed Input Module—available in three-channel or nine-channel variants—offers high-speed synchronous sampling for analog inputs, with dedicated analog input hardware that includes amplifiers, filters, and analog-to-digital converters (ADC).

Note: The Spectrum 109 version with nine channels will be coming soon.

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Benefits and Features

  • Synchronization across multiple modules
  • Ideal for three-axis accelerometers and strain gages
  • Connection to data logger via EPI and CPI
  • Streamlined creation of basic programs
  • Sample rate up to 10 kHz

Technical Description

The Spectrum 103 (three channels) and 109 (nine channels) share the same design, offering a variety of selectable input ranges on each channel.

Synchronization

Channels are digitized using a 32-bit ADC and offer channel-to-channel sampling synchronization within approximately ±10 ns.

When using the EPI bus for synchronization across multiple modules, module-to-module synchronization is achieved within approximately ±100 ns.

Three-Axis

Each Spectrum channel offers selectable input ranges: ±200 mV, ±1 V, ±5 V, and ±10 V. The Spectrum 103 and 109, providing three or nine input channels respectively, make them ideal for three-axis accelerometers and strain gages.

Connection via EPI and CPI

Spectrum modules connect to data loggers via EPI or CPI networks using standard Ethernet cables (CAT5e, CAT6, or higher). EPI networks are ideal for Spectrum applications. For smaller channel count setups, a single Spectrum is connected to a traditional CPI-enabled data logger, such as the CR6 or CR1000X.

Basic Programming

Short Cut software streamlines basic program creation for reading multiple Spectrum modules. It generates a wiring diagram and a CRBasic program for your data logger. For advanced processing or data management, you can further customize the CRBasic program.

Sample Rate

Program an anti-aliasing filter for sample rates up to 10 kHz and bandwidths up to 5 kHz.

Images

Spectrum 103
Spectrum 103
Spectrum 103
Spectrum 103
Spectrum 103
Spectrum 109
Spectrum 109
Spectrum 109

Compatibility

Please note: The following shows notable compatibility information. It is not a comprehensive list of all compatible products.

Dataloggers

Product Compatible Note
CR1000Xe Compatibility is limited to a 1 kHz maximum and requires OS version 4 or greater. Limited to one Spectrum on the CPI channel for speeds less than 1,000 Hz.
CR6 Compatibility is limited to a 1 kHz maximum and requires OS version 10 or greater. Limited to one Spectrum on the CPI channel for speeds less than 1,000 Hz.

Miscellaneous

Product Compatible Note
GRANITE 10 This preferred option requires OS version 1 or greater.
GRANITE 6 Compatibility is limited to a 1 kHz maximum and requires OS version 1 or greater.
GRANITE 9 This preferred option requires OS version 1 or greater.

Specifications

Operating Temperature Range -40° to +70°C
Storage Temperature -55° to +85°C
IP Rating IP20
Humidity 0 to 99% (non-condensing)
Number of Channels
  • Three differential (Spectrum 103)
  • Nine differential (Spectrum 109)
Input Range ±10000 mV, ±5000 mV, ±1000 mV, and ±200 mV
Common-Mode Input Voltage ±15 Vdc
Absolute Maximum Input Voltage ±16 Vdc
A/D Converters 32-bit SAR ADCs
Measurement Accuracy @ 20°C ±(0.04% of reading ±130 μV)
Note: The accuracy specification does not include sensor error or measurement noise.
Input Resistance 80 MΩ
Input Time Constant 230 ns
Input Offset Current 5 nA typical, maximum @ 50°C
Processor Digital signal processor 32-bit with floating point units
Processor Speed 400 MHz
Memory 128 MB SRAM
Power Requirements 10 to 30 Vdc voltage
Dimensions 21.6 x 13.7 x 7.6 cm (8.5 x 5.4 x 3.0 in.); additional clearance required for cables and wires
Weight 1.6 kg (3.53 lb)

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