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Features
& Capabilities
•
Acceleration, Velocity, Displacement
• Dual Inputs for ACH or ICP
• Double Integrators: 10mS, 100mS, 1
Sec
• Selectable HP Filters: 10Hz, 1Hz, 0.1Hz,
• Selectable Gain Settings:
0dB, 10dB, 20dB
• Low Output Impedance of 150 Ohm
• Wide frequency range 0.1Hz - 100kHz
• Large dynamic range > 130dB
• Simple 9VDC/30mA LVP interface
• Small in-line preamp chassis |
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| Dual ACH/ICP
Input Accelerometer Preamp |
The
LP201 is a precision accelerometer preamp designed to provide three
different types of data: Acceleration, Velocity, and Displacement
(Excursion). It provides dual ICP/ACH inputs which permit operation
with a wide variety of standard precision and low cost accelerometers.
Measurements of cabinet/panel vibrations and loudspeaker excursion
can be easily obtained.
The LP201 features dual precision integrators with selectable time
constants, selectable gain, and selectable highpass filtering. It
provides signal output via a male XLR connector utilizing the same
LVP interface format as is standard on all of our analyzer mic inputs.
Power can also be provided by any general means capable of supplying
9VDC at 30mA through an appropriate adapter cable. |
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| ACH
Input |
The
ACH input is designed specifically to utilize the very low cost
MSI ACH-01-03 accelerometer. A matching connector is provided
which allows the ACH-01-03 to be directly inserted.
The LP201 provides all of the input biasing circuitry required
for the ACH allowing maximum performance to be obtained. This
accelerometer is very low cost (approx $30) and is useable for
general purpose mounting on flat surfaces. The size of the accelerometer
is about 1/2 Inch square, and it has 8 grams of mass. |
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| Maximum
acceleration is 150g. Very useful for measuring vibrations on panels
and enclosure walls where there is ample suface area for attachement.
Hot melt glue works very well for this or perhaps double sided tape. |
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| ICP
Input |
The
ICP input is an industry standard used with many accelerometers.
A wide variety of accelerometers using this format are commonly
available. A low cost SMA connector is provided for this input.
Note: Many ICP type acclerometers utilize a Microdot 10-32
type connector. These connectors are extremely expensive and
relatively difficult to obtain. For this reason the LP201 uses
a common SMA connector which is much lower cost and readily
available everywhere. Adapters can be obtained from 10-23 to
BNC, and BNC to SMA, or modified cables. |
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