Omega Products OMB-DBK45 User Manual
H
Model OMB-DBK45
$
839
⻬⻬
User-Configurable
Low-Pass Filter from
DC to 50 kHz Cutoff
⻬⻬
Convenient BNC Input
Connectors
The OMB-DBK45 card provides
OMEGA’s OMB-LOGBOOK and
OMB-DAQBOARD-2000 Series
data acquisition systems with four
differential analog input channels
equipped with low-pass filters and
simultaneous sample-and-hold.
The OMB-DBK45 provides a wide
selection of full scale inputs.
Each channel features its own
instrument-ation amplifier with
gain ranges of x1, x10, x100, x200,
and x500, as well as individually
configurable low-pass filters. This
lets you maximize your signal via
the OMB-DBK45’s input ranges,
low-pass filter the output, and
simultaneously sample and hold
all channels before digitizing with
the OMB-LOGBOOK and
OMB-DAQBOARD-2000 Series.
Up to sixty-four OMB-DBK45
cards can be attached to
one OMB-LOGBOOK and
OMB-DAQBOARD-2000 Series,
for a total of 256 differential inputs.
Low-Pass Filters
Each OMB-DBK45 channel is
equipped with a low-pass filter
that is user configured for cut-off
frequencies from DC to 50 kHz,
and for Butterworth, Chebyshev,
or Bessel characteristics. The
OMB-DBK45’s frequency determining
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.
Preconfigured plug-in headers for
several preselected cutoff
frequencies are optionally available.
Specifications
Connector: DB37 male, mates with
P1 pinout on the OMB-LOGBOOK,
OMB-DAQBOOK or DAQBOARD
data acquisition systems; BNC
connectors for signal inputs
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
Number of Poles/Filter: 3
Types of Filters: Bessel,
Butterworth, & 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
Acquisition Time:
0.6 µs (10 V excursion to 0.1%);
0.7 µs (10 V excursion to 0.01%)
Channel-to-Channel
Aperture Uncertainty: 50 ns
Output Droop Rate: 0.1 µV/µs
Input Gains: x1, 10, 100, 200, 500,
& user determined up to 500
Input Offset Voltage:
[500 + 5000/G] µV max (nullable)
Input Offset Drift:
[±5 + 100/G] µV/°C max
Input Bias Current: 100 pA max
Input Offset Current: 50 pA max
Input Impedance: 5 x 10
12
Ohms
parallel with 6 pF (without 100 K
bias resistors enabled)
Switchable Bias Resistors:
100 K each to analog common
Gain Errors:
x1 0.04% max
x10 0.1% max
x100 0.2% max
x200 0.4% max
x500 1.0% max
Dimensions: 82 x 209 x 19 mm
(3.25 x 8.25 x 0.75")
Cables:
Use OMB-CA-37-x
with OMB-LOGBOOK and
OMB-DAQBOARD-2000 Series
OMB-DBK45
4-Channel Simultaneous Sample and
Hold Card with Low-Pass Filter
Ordering Example: OMB-DBK45 is a 4-channel simultaneous sample and hold card with low-pass filter, $839.
To Order
(Specify Model Number)
Model Number Price Description
OMB-DBK45 $839 4-Channel Simultaneous Sample and Hold Card with Low-Pass Filter
The OMB-DBK45, $839, provides 4 channels of
simultaneous sample and hold, as well as low-pass filtering
H-82
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