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The OMB-DBK18, $629, four-channel low-pass
filter card, shown smaller than actual size
⻬ Provides Four
Independent Three-Pole
Low-Pass Filter Channels
⻬ Provides a Separate
Instrumentation Amplifier
Input Stage for Each
Channel
⻬ User-Configurable from
DC to 50 kHz Cut-Off
The OMB-DBK18 low-pass filter card
provides OMEGA’s OMB-LOGBOOK
and OMB-DAQBOARD-2000 Series
data acquisition systems with four
low-pass filters that can be individually
configured for a cut-off frequency from
DC to 50 kHz, and for Butterworth,
Chebyshev or Bessel characteristics.
Each OMB-DBK18 provides four
channels of differential voltage
input to an OMB-LOGBOOK and
OMB-DAQBOARD-2000 Series.
The systems’ sixteen analog input
channels can each accept four
OMB-DBK18 cards, for a total of
256 analog input channels with
low-pass filtering.
Each of the OMB-DBK18’s four
channels features an instrumentation
amplifier with switch-selectable
gains of x1, 10, 100, 200 and 500.
Each channel is also equipped with
a location for a user-selected gain
resistor, allowing you to select a
custom gain range of up to x500.
The OMB-DBK18’s frequencydetermined resistor and capacitor
locations are on machined-pin IC
sockets for maximum flexibility. The
card is provided with blank plug-in
headers for each channel, to which
you can add passive components for
particular frequencies.
The OMB-DBK18 is equipped with
BNC input connectors. Its differential
inputs are equipped with switchable
100 K bias resistors that are
referenced to analog common.
Specifications
Connector: DB37 male, mates with
P1 pinout on the OMB-LOGBOOK
and OMB-DAQBOARD-2000
Series; signal inputs accepted via
BNC connectors
Number of Channels: 4
Number of Cards Addressable: 64
Input Type: Differential
Voltage Input Ranges:
0 to ±5 Vdc
0 to ±500 mVdc
0 to ±50 mVdc
0 to ±25 mVdc
0 to ±10 mVdc
For Custom Gains:
Input Amplifier Slew Rate:
12 V/µs min
Input Gains: x1, 10, 100, 200, 500
and user determined up to 500
Input Offset Voltage:
[500 + 5000/G] µV max (nullable)
Input Offset Drift:
[±5 + 100/G] µV/°C max
Input Impedance: 5 x 10
12
Ohms
parallel with 6 pF
Gain Errors (max):
x1 0.04% x200 0.4%
x10 0.1% x500 1.0%
x100 0.2%
Number of Poles/Filter: 3
Types of Filters: Bessel,
Butterworth and Chebyshev
Frequency Range: 0.1 Hz to 50 kHz;
the frequency is set by installation of
4 to 6 resistors and/or capacitors in
the provided socket locations
Cables: Use OMB-CA-37-x
with OMB-LOGBOOK and
OMB-DAQBOARD-2000 Series
R
user
=
40,000
- 80 (Ohms)
Gain-1
OMB-DBK18
4-Channel Low-Pass Filter Card
for Use with OMB-DAQBOARD-2000 Series
and OMB-LOGBOOK Systems
Model OMB-DBK18
$
629
Ordering Example: OMB-DBK18 is a 4-channel low-pass filter card, $629.
To Order
(Specify Model Number)
Model Number Price Description
OMB-DBK18 $629 4-Channel Low-Pass Filter Card
H-69
AVAILABLE FOR FAST DELIVERY!
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