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Main Features

• Two input channels per card, change-able over 4 groups.

• Particularly suitable for vibration monitoring and modal analysis.

• Selectable filter types (LP, HP) and cut-off frequencies (from 0.05 to 20kHz).

• Selectable gain in 8 steps (from 1 to 5000).

• Up to 12 cards can be housed in a 19” 3U rack mounting


gle/102-DySA is a dual channel amplifier / conditioning module developed by for the measurement of dynamic signals incoming from strain-gauge transducers requiring reliable and flexible conditioning (i.e. current feeding, filtering and amplification). Thanks to its high gain and wide frequency response, gle/102-DySA conditioner is particularly suitable for applications like vibration monitoring and modal analysis. To allow measurements from a single strain gauge avoiding the completion to a bridge configuration, a current excitation method has been implemented. The user may choose between a constant electric current mode or a constant voltage with limited current mode (see the block diagram). In both cases to secure the strain gauge to the unit, just a two-wires connection is required.

The gain is selectable from 1 to 5000 choosing among the following 8 values: 1, 5, 10, 50, 100, 500, 1000 and 5000. Intermediate gains can however be set between the main steps fine tuning a 20 turns trimmer.


Block Diagram

Technical Specifications- gle/102-Dysa 

Input stage

Number of input channels

2 active selectable among 4

Input type



AC (fC=0.08 Hz typ)


@ 10 MW


Selectable (selector on the front panel) among: 1, 5, 50, 100, 500, 1000 and 5000

Transducer supply

1. Constant current

2. Constant voltage with limited current

Excitation current

1. 0.625, 1.25, 2.5, 5, 10, 20 mA (Constant current mode)

2. 10 or 20 mA (Constant voltage with limited current mode)


Output stage

Output swing

20 Vpp (25 Vpp max)

Frequency response

Selectable (see table above)


0.1 % (Vout£10V)

Output impedance

<< 50 W



SNR (Typ.)

@ 70 dB @ G=1000; fC =5 kHz


Strain Gages: removable screw terminals

Outputs: BNC and multi-poles standard connector

Power supply

-± 15 V (+2.5 A; -1.8 A max)



19” 3U rack mountable chassis. It can host up to 12 gle/102-DySA cards and 1 GLE/100 Diplay module

Power supply

-± 15 V (+2.5 A; -1.8 A max)


gle/100 Display Module

Digital voltmeter 4 ½ digits (single channel visualization)

Selector for active strain gauges groups

RMS output of the selected channel (BNC connector on the front panel)

Separated BNC connector for channel calibration

Alarm/status led indicators: over-range, current feed, open connection

Due to continuous developments, specifications are subject to change without prior notice. This product is not intended for applications whose its failure to perform can be expected to cause damages to properties and/or persons and/or injury to human life.