An electromagnetic (EM) signal booster, in some embodiments, comprises a bandpass filter comprising a high pass filter and a low pass filter coupled to the high pass filter, and further comprising a low cutoff frequency and a high cutoff frequency, both cutoff frequencies being adjustable; a first amplifier coupled to the high pass filter; and a second amplifier coupled to the first amplifier, wherein the high cutoff frequency is adjusted to within a first threshold value above a minimum high cutoff frequency and the low cutoff frequency is adjusted to within a second threshold value below a maximum low cutoff frequency.

An electromagnetic (EM) signal booster, in some embodiments, comprises a bandpass filter comprising a high pass filter and a low pass filter coupled to the high pass filter, and further comprising a low cutoff frequency and a high cutoff frequency, both cutoff frequencies being adjustable; a first amplifier coupled to the high pass filter; and a second amplifier coupled to the first amplifier, wherein the high cutoff frequency is adjusted to within a first threshold value above a minimum high cutoff frequency and the low cutoff frequency is adjusted to within a second threshold value below a maximum low cutoff frequency.

A method of data acquisition for health management of systems is provided. The method includes receiving, at a remote node, analog data from one or more sensors configured to monitor a health characteristic of a system, converting, at the remote node, the analog data into digital data, time stamping the digital data with the remote node, recording the digital data in a memory of the remote node, wherein the memory is a ring buffer, transmitting, from the remote node to a central device, requested digital data upon receiving a request related to a triggering event, and synchronizing the transmitted data at the central device based on the time stamp of the requested digital data to generate synchronized data.

A method of data acquisition for health management of systems is provided. The method includes receiving, at a remote node, analog data from one or more sensors configured to monitor a health characteristic of a system, converting, at the remote node, the analog data into digital data, time stamping the digital data with the remote node, recording the digital data in a memory of the remote node, wherein the memory is a ring buffer, transmitting, from the remote node to a central device, requested digital data upon receiving a request related to a triggering event, and synchronizing the transmitted data at the central device based on the time stamp of the requested digital data to generate synchronized data.

A method for protecting a signal for transmitting a sequence of measurement values to a signal processing unit. The method includes a step of reading in at least one sequence of measurement values from a sensor and a step of processing the measurement values using a cyclical processing specification in order to determine a varied measurement value for each of at least two measurement values. Finally, the method comprises a step of sending the varied measurement values to the signal processing unit as measurement values from the sensor.

A method for protecting a signal for transmitting a sequence of measurement values to a signal processing unit. The method includes a step of reading in at least one sequence of measurement values from a sensor and a step of processing the measurement values using a cyclical processing specification in order to determine a varied measurement value for each of at least two measurement values. Finally, the method comprises a step of sending the varied measurement values to the signal processing unit as measurement values from the sensor.