## GeoSIG AC-73 Accelerometer Response

### AC-73 Sensitivities

Nominal sensitivity in V/m/s**2 is

G in V/m/(s*s) = [Full scale voltage / Clip level] / [9.80665 m/(g * s**2)].

### Voltages and Output Types

To translate the Sensor Output Voltage Level and Output Type from a GeoSIG calibration sheet to Full Scale Voltage shown below, know that the Sensor Output Voltage Level is the maximum voltage for the acceleration range or clip level from a single output.

If the sensor has, for example, a single-ended (positive) output and an Output Voltage Level of 2.5V, a positive maximum acceleration would generate +2.5V. Likewise, the maximum negative acceleration would generate -2.5V. Therefore,

• the full scale voltage is +/- 2.5V,
• the peak-to-peak voltage is 5V (+2.5 to -2.5), and
• the peak voltage is 2.5V.

If the sensor has differential (a positive and negative) output and an Output Voltage Level of 2.5V, a positive maximum acceleration would generate +2.5V from the positive output and -2.5V from the negative output for a sum of +5V. Likewise, the maximum negative acceleration would generate -5V from the sum of the positive and negative outputs. Therefore,

• the full scale voltage is +/- 5V,
• the peak-to-peak voltage is 10V (+5 to -5), and
• the peak voltage is 5V.

 Manufacturer Model Period / Frequency Sensitivity (V/m/s**2) Full Scale Voltage Clip Level RESP Filename Source Comments GeoSIG AC-73 0-0.01 s / DC->100 Hz 2.0394 V/M/S**2 +/-10V Differential +/-0.5g RESP.XX.NS685..BNZ.AC73.DC_100.10VDF.0_5G GeoSIG GeoSIG AC-73 0-0.01 s / DC->100 Hz 1.0197 V/M/S**2 +/-10V Differential +/-1g RESP.XX.NS686..BNZ.AC73.DC_100.10VDF.1G GeoSIG GeoSIG AC-73 0-0.01 s / DC->100 Hz 0.5099 V/M/S**2 +/-10V Differential +/-2g RESP.XX.NS525..BNZ.AC73.DC_100.10VDF.2G GeoSIG GeoSIG AC-73 0-0.01 s / DC->100 Hz 0.3399 V/M/S**2 +/-10V Differential +/-3g RESP.XX.NS687..BNZ.AC73.DC_100.10VDF.3G GeoSIG GeoSIG AC-73 0-0.01 s / DC->100 Hz 0.2549 V/M/S**2 +/-10V Differential +/-4g RESP.XX.NS688..BNZ.AC73.DC_100.10VDF.4G GeoSIG

Mary Templeton 3/5/2020