Catalog excerpts
The device EL-BULT14 is able to produce TTL trigger pulses out of analog signals from optical (Laser), reluctance, capacitive and eddy-current sensors. The main application of the EL-BULT14 is to convert sensor signals to TTL pulses in structural health monitoring and vibration measurements of compressors and turbine blades. The channel selectors can be used to route the amplified input signal as well as the trigger output pulse from one of the 14 channels to the front BNC connectors for monitoring purposes. Each of the up to 14 channels has a corresponding input (Probe In) and trigger pulse out (Pulse Out) BNC connector on the rear side of the device. Elsys AG Mellingerstrasse 12 CH-5443 Niederrohrdorf Switzerland Phone: +41 56 496 01 55 Email: info@elsys.ch www.elsys-instruments.com
Open the catalog to page 1Block Diagram Key Capabilities • Gain factors 1, 10, 100 • Trigger on negative or positive slopes • Trigger level from (-9 to +9 V) / Gain • Adjustable hysteresis • Bandwidth DC to 400 kHz • Max input voltage ±42 V Back plane Ch-Selector Logic Channel Selector Control Elements Trigger-Module The Channel Selector is an optional module for accessing all installed LTM1 output signals and amplified input signals from the front-side of the rack chassis. Green LED The green LED will flash at each generated trigger pulse. Red LED The red LED indicates that this channel is selected by at least one...
Open the catalog to page 2Channel Specifications Input Amplifier Specifications of the Base Unit Signals Adjusting of the Hysteresis The value of the hysteresis can be adjusted by a potentiometer, It is accessible by removing the top cover of the EL-BULT14 rack, Turning clockwise increases the hysteresis, The value of the hysteresis can be set between approx, 0,35 to 4,5 % of the amplifier range (e.g. 10 mV to 500 mV at gain=1). By installing the jumper J2, the hysteresis will be increased by a factor of approx, 3 (e.g 30 mV to 1,5 V at gain=1), This may be helpful at the use of reluctance sensors, © 2023 Elsys AG
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