Multichannel Systems μPA32 User Manual
32-Channel Micro Preamplifier μPA32
The micro preamplifier with 32 electrode inputs μPA32
is connected to the microelectrode probes for providing
the initial tenfold amplification stage. Signal integrity
is safeguarded and noise pick up is significantly reduced
by this preamplifier compared to the use of signal buffers
with gain 1. The μPA32 is equipped with an Omnetics socket
for NeuroNexus probes CM32, F32, HP32, and MRCM32.
When using two μPA32 you can connect the NeuroNexus
probes H64 and HC64. It has an additional common ground
and a reference electrode input. The reference electrode
is ideally identical to the recording electrodes and placed
into a comparable but inactive area or tissue.
Background or noise signals that are picked up by both
the reference electrode and the recording electrodes
are removed. The very high input impedance ensures
stable long-term recordings.
32-Channel Micro Preamplifier Inputs
housing
Input Connector Omnetics A79023-001
(NSD-36-DD-GS with 4 guide posts,
female)
1
5
3
7
9
15
11
13
17
19
21
23
25
27
29
31
33
35
Pin 1, 35, 36 GND (Ground)
8
10
12
14
16
18
2
6
4
22
20 24
26
28
30
32
34
36
Pin 2 Reference input
Pin 3 to 34 Recording channels
1 to 32
32-Channel Micro Preamplifier Outputs
1
16 17 18
31 32 33
3
2
5
4
19
34
20
35
21
36
6
7
22
37
23
38
9
8
24
39
25
10
40
11
26
41
27
12
42
28
13
43
29
14
44
15
30
4 Guide posts
Output Connector 44-Pin HD D-Sub male connector (Harting TB 09 56 300 5615)
Pin Channel Pin Channel Pin Channel Pin
1 1 17 2 32 3 12, 13, 16, 28, 31, 42 GND
2 4 18 5 33 6
3 7 19 8 34 9 14, 15, 30 positive
4 10 20 11 35 12 supply voltage
5 13 21 14 36 15
6 16 22 17 37 18 29, 43, 44 negative
7 19 23 20 38 21 supply voltage
8 22 24 23 39 24
9 25 25 26 40 27
10 28 26 29 41 30
11 31 27 32
Multi Channel Systems
MCS GmbH
Aspenhaustrasse 21
72770 Reutlingen
Germany
Fon +49-7121-9 09 25Fax
+49-7121-9 09 25-11
info@multichannelsystems.com
www.multichannelsystems.com
0
2012 Multi Channel Systems MCS GmbH
Product information is subject to change
without notice.
32-Channel Micro Preamplifier μPA32
Technical Specifications
Type μPA32
Operating temperature 0 ° to 50 °C
Storage temperature 0 ° to 50 °C
Relative humidity 10 % to 85 % non-condensing
Dimensions (W x D x H) ca. 20 mm x 25 mm x 3 mm w/o connector
ca. 24 mm x 25 mm x 3 mm with connector
Length of the cable 1.5 m
Weight ca. 2 g w/o cable
Maximum tensile strength of the cable 20 N
Input connector type 36-pin dual-row Omnetics A79023-001
(NSD-36-DD-GS with 4 guide posts, female)
Mating connector type Omnetics for example A70001-001
(NPD-36-xx-GS with 4 guide posts, male)
Output connector type 44-pin HD D-Sub, male (Harting TB 09 56 300 5615)
Number of amplifier channels 32
Supply voltage ± 2.5 V
Supply current < ± 30 mA, typically ± 26 mA
Input voltage ± 250 mV (with respect to a supply voltage of 2.5 V)
Gain 10
Bandwidth DC to 50 kHz
Input voltage ± 250 mV (with respect to a supply voltage of 2.5 V)
Input impedance 1 G@ 1 kHz
Input capacitance 13 pF
Input noise typical 1.2 μV (1 Hz to 10 kHz, inputs shortened)
Noise density e = 10 nV / Hz @ 1 kHz
n
RMS
n
Output voltage range ± 2.5 V (supply voltage range)
Multi Channel Systems
MCS GmbH
Aspenhaustrasse 21
72770 Reutlingen
Germany
Fon +49-7121-9 09 25Fax
+49-7121-9 09 25-11
info@multichannelsystems.com
www.multichannelsystems.com
0
2012 Multi Channel Systems MCS GmbH
Product information is subject to change
without notice.
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