| 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
|
|
|
|
|
|
