ABB NTHS03 Hydraulic servo termination unit

ABB NTHS03 Hydraulic servo termination unit

Steps 1 through 9 of the calibration procedure are elaborated on as follows: 1. Position the module so that the chassis has several empty slots in the right side of the module. Alternatively, contact National Instruments concerning availability of an SCXIbus extender board. 2. At low gains, more alternatives exist to serve as a short circuit, but at a gain of 500, 1 mV referred to the output is only 2 µV referred to the input. Thermoelectric effects make it difficult to keep a short circuit from generating such voltages. The best solution is to use short lengths of heavy copper wire, and to keep the short away from heat sources. 3. As mentioned previously, channels 1 through 7 have slightly different output offsets in Parallel mode and Multiplexed mode. Thus, for proper calibration you must decide which mode you plan to use in normal operation.

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