Mts FlexTest Models 200 Manuel d'utilisateur Page 168

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Vue de la page 167
MTS FlexTest® Models 40/60/100/200 Controller Hardware
Model 494.21 Multi-Range DUC with Acceleration
Mezzanine Cards
168
Model 494.21 Multi-Range DUC with Acceleration
Compensation Card
About the Model 494.21 Multi-Range DUC /Acceleration Compensation Card
The Model 494.21 Mezzanine Card plugs into one of the slots on the Model
494.40 I/O Carrier. This card combines a multi-range digital universal
conditioner (DUC) input and an accelerometer compensation input on a
single card.
The acceleration compensation signal is summed with the DUC input signal
to minimize unwanted feedback from motion caused by a mass attached to
the transducer. The summing of the two signals is performed on the card
based on software settings.
Note You can also use this card as a stand-alone multi-range DUC
without an accelerometer input.
Select Accel 1*
(current source)
+FB
-FB
Electrical
Zero*
(D to A)
Pre Amp
Gain*
AC/DC
coupled
Summing
Amp
Post
Gain*
Demodulator
2.8 KHz
demod filter
3.5 mA
Current Source
Factory-Set Gain**
Buffer
Accel Comp
Summing
Signal
AA filter
RJ50
JXB
5
2
3
6
4
7
EMI
Filter
RJ50
RJ50
Accel.
Interface
Box
Buffered Accel
Comp Output Signal
Polarity
Select*
* Software Setting, ** Factory Setting
Select Accel 2*
(bridge type)
Unbuffered
Accel
Processor
Accel
Comp
Attenuate*
Factory-Set
Analog Bus
1-4 Select**
Factory-Set
Analog Bus
1-4 Select**
Factory-Set
Analog Bus
1-4 Select**
Factory-Set
Analog Bus
1-4 Select**
A to D
% accel
comp
Factory-Set
Analog Bus
1-4 Select**
RJ50
JXA
Transducer Input
Accelerometer Input
AC Transducer Only
J2 Bridge
Accel In
J1 Buff
Accel Out
Current
Accel In
BNC
Vue de la page 167
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