LVDT Signal Conditioning FAQ
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The S1A and SC-100 LVDT signal conditioners are very similar; however, each unit was designed with specific features for the markets it serves in mind, so there are a few differences between them.
1. Connect a 2-wire RS-485 port converter to the computer on which this GUI is to run and connect the converter's output terminals to the RS-485 bus connections on the LVDT module(s), Data A (D-) connects to terminal J3-2 and Data B (D+) connects to terminal J3-1, but always follow the data polarity (D) indicated above, regardless of the letters used for the data lines.
Operating an ASG LVDT signal conditioner using its RS-485 communication port
ASG LVDT signal conditioners incorporate an RS-485 two-wire multi-drop serial communications interface for up to 16 devices. This port enables half-duplex serial communication by which a module can be set up and calibrated remotely and system data can be read or stored on a PC running a terminal program like Hyper Terminal with a 2-wire RS-485 converter for the computer's serial port or USB port connected to terminals J3-1 and J3-2 of the signal conditioner. The communication parameters are: 9600 bps, no parity, 8 data bits, and 1 stop bit (9600, NP, 8, 1), with echo on. Be sure that the RS-485 connection for Data A (D-) is connected to J3-2 and Data B (D+) is connected to J3-1.
By: Ed Herceg Chief Technology Officer
The Alliance Sensors Group model S1A module is the most advanced single channel LVDT signal conditioner available today. It will operate practically any LVDT currently on the market, but occasionally users can be confused by unusual LVDT configurations,
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