Gentec slink

Information from Gentec Feb 2023

Unfortunately, the S-LINK doesn't have a way to indicate that a new measurement has arrived. But, the latest measurement is always available in the read-out buffer that can be called with a serial command. The S-LINK needs a little time after a pulse to perform the measurement and fill the output buffer. So, when requesting a single measurement, the command should be sent a few hundred milliseconds (in the case of your 1 Hz measurement) after the trigger pulse to ensure the measurement has been performed and that the data is ready to be read-out. The command to read out a single measurement is *CV1 or *CV2.

Alternatively the S-LINK can print the latest measurement as it arrives using the *CA1 or *CA2 commands, but this won't work for both channels at the same time.

The latest S-LINK firmware is 1.02.22 and is available for download on the website, in the Download tab: https://www.gentec-eo.com/products/s-link-2-ethernet the version on your S-LINKs can be verified with the *VER command. This firmware hasn't seen a new release since 2015.

How to set calibration coefficients on Gentec Slink

For calibration we have 3 Coefficients per channel that can be used -

In a quadratic equation y=ax^{2}+bx+c

In the Database Editor > Device variable

a = quadratic_coefficient

b = linear_coefficient

c = constant_coefficient

IMPORTANT NOTE : Before making a new calibration curve, set quadratic_coefficient and constant coefficient as 0 and set the linear_coeffcient to 1. Use that data to make a calibration curve and obtain new values for a, b & c.

Examples of calibration

For calibration of y = 0.28x

set quadratic_coefficient = 0

set linear_coefficient = 0.28

set constant_coeffcient = 0

For y = 2x^{2} + 5

set quadratic coefficient = 2

set linear_coefficient = 0

set constant_coefficint = 5

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