Kaman SMU9200 - Manual (Page 10)

SMU-9000 User Manual 7
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Part II: Setting Up the System
Sensor Installation
The sensor(s) for the SMU-9000 is connected to the electronics
via an SMA type connector (other types of connectors are
available upon request). Connect the sensor to the unit and mount
the sensor on a stable platform. Since target motion is usually the
desired measurement, be sure the sensor mount provides a stable
reference. A Kaman micrometer fixture is recommended (Part no.:
850854-001). A sensor installation for a standard calibration is
shown below.
Figure 5. Sensor Installation
When mounting the sensor, an offset region should be included in
addition to the measurement range desired. The offset is the
minimum space or gap between the sensor and target. The sensor
should be positioned so that the target never enters this area.
When offset has not been considered, linearity of the system can
be adversely affected as the target enters the offset region. The
offset region also provides clearance for a moving target thereby
preventing sensor/target contact. Sensor/Target contact could also
cause sensor damage and contact errors in measurement.