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- 36 functions
- Dual inputs
- Post filtering and gain adjustment
- 2 % basic accuracy
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The SR235 Analog Processor provides a variety of convenient signal
processing functions on up to two inputs. Background subtraction,
ratioing and logarithmic compression are just a few of the functions
which can be implemented with the SR235. With its many output functions,
high accuracy, and variable filtering and gain, the SR235 is the
perfect addition for any boxcar system—especially those in
which a computer is unavailable to perform signal processing.
The SR235 outputs a voltage proportional to a function of an argument
formed from its two inputs, A and B. Allowable arguments are: A,
B, √(A2
+ B2), A-B, A×B/10,
and 10A/|B|. The functions that can be selected are: x, x2,
√x, ln|x|, -dx/dt, and -(dx/dt)/100.
Filtering can be performed on the argument with time constants from
0.3 ms to 30 s.
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| Specifications |
| General |
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| A and B inputs |
1 MΩ input impedance. Operating range ±10
V, protected to 100 V |
| Input offset |
<2 mV |
| Argument (x) |
A, B, √(A2+B2
), A-B, A×B/10, and 10A/|B| |
| Argument filter |
Time constants from 0.3 ms to 30 s in a 1-3-10 sequence.
When OFF, the argument is unfiltered. |
| Gain |
0.1 to 20 in a 1-2-5 sequence |
| F(x) output |
x, x2,
√x, ln|x|, -dx/dt, and -(dx/dt)/100 |
| Frequency range |
-dx/dt to 10 Hz, (-dx/dt)/100 to 1 kHz,
√(A2+B2)
to 20 Hz, and all others from DC to 50 kHz |
| Accuracy |
Gain, 2 %; rms sum, 3 %; difference, 1 %;
multiplication, 2 % of full scale; division (with denominator >0.1),
3 % of full scale; ln|x|, x2, √x
are accurate to ±20 mV (referenced to input or output, whichever
is less); -dx/dt and (-dx/dt)/100, 5 % |
| Power |
+24 V/120 mA, -24 V/80 mA. 5 W |
| Mechanical |
Single-width NIM standard |
| Warranty |
One year parts and labor on defects in materials
and workmanship |
Stanford Research Systems, Inc. • 1290-D
Reamwood Ave., Sunnyvale, CA 94089
Phone: (408) 744-9040 • Fax: (408) 744-9049 • email: info@thinkSRS.com
• www.thinkSRS.com
© Stanford Research Systems, Inc. 2003
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