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MR-260
MÖSSBAUER DRIVE UNIT

The Mössbauer Drive Unit MR-260 forms - together with any velocity transducer of the WissEl Mössbauer line - a Mössbauer drive system. This system is used to generate a precise motion of the γ-source during Mössbauer effect measurements. It is suitable for any waveform, which is received from a connected WissEl digital function generator. Using a front panel 10-turn potentiometer, the the maximum velocity of the transducer during a function sweep can be set within the full range of 0 to approx. 300 mm/s in one step. A front panel toggle switch permits to reduce this velocity range to one tenth (i.e. approx. 30 mm/s). If the outputs MONITOR and ERROR are connected to dual-beam oscilloscope, the movement of the velocity transducer can be permenantly monitored. The highest accuracy is obtained using the transducer in sinusoidal motion in its resonance frequency ( 23 Hz).


SPECIFICATIONS
Performance
Velocity range
0 ... ~ 300 mm/s (with standard springs)
Calibration Constant
~ 37 mm/s per Volt with MA-260
~ 25 mm/s per Volt with MA-260S or MVT-1000
Accuracy
0.05 % in a sinoidal mode (at the resonance freq. 0.15 % in a triangular mode and a load of max. 400g)

Temperature shift of the velocity
<10-4 / °C
Linearity
better than 0.15 % up to 100 mm/s
Input
Analog Input
0 .... 20 Vpp
Outputs
Monitor
~ 27 mV per mm/s with MA-260
Error
~ 40 mV per mm/s with MA-260S or MVT-1000
Controls
Velocity
Front panel 10-turn potentiometer for setting the velocity
Front panel toggle switch for reducing the setting range to one tenth
Front panel toggle switch for switching the transducer on or off
Gain
Front panel screwdriver adjust potentiometer for adjusting the amplification of the feedback loop
Freq. Resp.
Front panel screwdriver adjust potentiometer for adjusting the frequency response of the feedback loop
Physical
Size
Double width NIMmodule
Weight
~ 0.9 kg
Power Requirements
Housing
Double width NIM module
Weight
1 kg
Power requirements
± 12 V 200 mA
 
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