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RESPONSE TIME WHEN SATURATED OUTPUTS ARE ENCOUNTERED USING THE KD-2306 SYSTEM

When using a KD-2306 series displacement measuring system, it is often necessary for the target to be moved outside the range of the sensor. This causes the system output to saturate (approximately 7 volts). It also causes some internal stages to saturate. When stages are saturated there is a certain "delay time" before these stages can respond to an input and come out of saturation. This phenomenon causes the saturated response time to be slower than the normal response time encountered when the target is moving within the normal stated range of the sensor.

 

The figure below shows the typical saturated response time for a KD-2306 system. This data was taken using a KD-2306-2S system calibrated for a 0.100 inch range. Note that after the target appears there is a 45 µsec delay before the output responds. This is due to the delay times of internal stages which were saturated.

 

The output slew rate of a KD-2306 system is about 0.3 V/µsec. The maximum output current is 15 mA.

 

It is possible, to reduce this delay by factory modifications of portions of the circuit. Contact Kaman for application assistance.

 

Response time image

 

 

 

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