06-04-2010 12:22 AM
06-04-2010 07:54 PM
1. If your sensor support 2.1mA excitation current, you can use internal excitation at 2.1mA. Else, use external excitation, and set it to desired value.
2. 4432 only supports pseudo-differential terminal configuration.
3. Set it to 1 so that when you calculate dB, it'll refrence to 1g.
4. If you wish to see DC bias voltage, choose DC coupling, but if you just wish to see acceleration, choose AC coupling.
06-05-2010 08:22 AM
06-09-2010 12:25 AM
06-09-2010 12:31 AM
06-09-2010 12:43 AM
07-24-2010 03:51 AM
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KateB ha scritto:
1. If your sensor support 2.1mA excitation current, you can use internal excitation at 2.1mA. Else, use external excitation, and set it to desired value.
2. 4432 only supports pseudo-differential terminal configuration.
3. Set it to 1 so that when you calculate dB, it'll refrence to 1g.
4. If you wish to see DC bias voltage, choose DC coupling, but if you just wish to see acceleration, choose AC coupling.
I'm joining in this discussion because I'm searching similar information. This is the datasheet of the accelorometers I'm using.
Parameters DYNAMIC Range (g) ±2 ±5 ±10 ±20 Sensitivity (mV/g) 1000 400 200 1 Frequency Response (Hz) 0-150 0-300 0-400 0 Frequency Response (Hz) 0-400 0-500 0-600 0 Natural Frequency (Hz) 700 800 1000 150 Non-Linearity (%FSO) ±0.5 ±0.5 ±0.5 ± Transverse Sensitivity (%) <3 <3 <3 < Damping Ratio 0.7 0.7 0.7 0 Shock Limit (g) 10000 10000 10000 1 ELECTRICAL Zero Acceleration Output (mV) ±50 ±50 ±50 ± Excitation Voltage (Vdc) 8 to 36 8 to 36 8 to 36 8 to Excitation Current (mA) <5 <5 <5 < Bias Voltage (Vdc) 2.5 2.5 2.5 2 Output Resistance (Ω) <100 <100 <100 < Insulation Resistance (MΩ) >100 >100 >100 > Turn On Time (msec) <100 <100 <100 < Residual Noise (µV RMS) 500 300 300 Spectral Noise (µg/√Hz) 35 38 75 132 Ground Isolation Isolated from Mounting Surface ENVIRONMENTAL Thermal Zero Shift (%FSO/°C) ±0.008 ±0.008 ±0.008 ±0 Thermal Sensitivity Shift (%/°C) ±0.010 ±0.010 ±0.010 ±0 Operating Temperature (°C) -55 to 125 Compensated Temperature (°C) -40 to 100 Storage Temperature (°C) -55 to 125
For that one, what is the right value for Iex value, Iex source, Terminal configuration, dB Reference?