You can connect up to four analog input signals (or IEPE sensors) to the SMA connectors on the module. Internally, these signals are connected in single-ended mode. The DT7837 module supports an input signal range of ±10 V (using a gain of 1) or ±1 V (using a gain of 10).
If you enable the use of the internal excitation current source for IEPE inputs, it is recommended that you choose AC coupling. Refer to the DT7837 User's Manual for more information on the analog input features.
The following figure shows how to connect an analog input signal (channel 1, in this case) to a SMA connector on the DT7837 module.
Note: The analog input circuitry is calibrated at the factory. If you decide that you want to recalibrate the analog input circuitry, refer to the instructions in the DT7837 User's Manual.