Omega Products OMB-DBK50 User Manual

variety of external power sources.
The units can draw power from their
included AC adaptors; the optional
OMB-DBK30A rechargeable battery
module; a car battery; or any +9 to +20
Vdc source.

Input Amplifier

The OMB-DBK50’s input amplifiers
provide input ranges for 10 V, 100 V,
and 300 V bipolar signals. The
OMB-DBK51’s input amplifiers provide
input ranges for 100 mV, 1 V, and 10 V
bipolar signals. These ranges are
software programmable, allowing you to
change ranges without having to access
internal range-set jumpers or switches.
The input amplifiers also provide a
zeroed input range, which allows you to
incorporate auto-zero and temperature
drift compensation in your data
acquisition applications.

Bandwidth Filter

The OMB-DBK50 and OMB-DBK51
provide a selectable 3.5 Hz, low-pass
filter on each channel. You can change
the corner frequency by plugging in a
different standard resistor network. In
addition, you can bypass the low-pass
filter entirely, for a bandwidth of 20 kHz.

Specifications

Connector: DB37 male, mates with

P1 pinout on the OMB-LOGBOOK or
with the OMB-DAQBOARD-2000 Series
Inputs: Removable screw
terminal block

Channels: 8, individually isolated
Isolation:

Channel-to-Channel: 750 V
Channel-to-System: 1250 V

Input Impedance:

OMB-DBK50: 1 MΩ
OMB-DBK51: >10 MΩ

Bipolar Input Ranges:

OMB-DBK50: ±10 V, 100 V

and 300 V

OMB-DBK51: ±100 m V, 1 V

and 10 V

Output Voltage Range: ±5 Vdc
Accuracy: 1% of range

(without offset correction)

0.2% of range (with offset correction)

Offset: ±50 mV Max
Noise: <5 mV p-p (with filter)

<50 mV p-p (without filter)

Temp. Coefficient: 0.2 mV/°C
Bandwidth: 20 kHz (LPF bypassed)
Low-Pass Filter: Factory installed

3-pole, 3.5 Hz (by-passable or user set)

Operating Power Voltage Range:

9 to 20 Vdc

Module Power Requirements: 7.5 W
Included AC Adaptor: 15 Vdc@ 0.9 A
Dimensions: 221 x 285 x 36 mm

(8.5 x 11 x 1.375")

Weight: 1.7 kg (4 lb)

OMB-DBK50 and OMB-DBK51

8-Channel Isolated Voltage-Input Modules for
OMB-LOGBOOK and OMB-DAQBOARD-2000 Series

To Order

(Specify Model Number)

Model Number Price Description

OMB-DBK50 $2079 8-Channel Isolated High Voltage-Input Module
OMB-DBK51 2099 8-Channel Isolated Low Voltage-Input Module

Model OMB-DBK50/51

$

2079

The OMB-DBK50, $2079 and OMB-DBK51, $2079,

each offer eight channels of analog input via

removable screw-terminal plugs

⻬⻬

Offers Bipolar Input

Ranges: OMB-DBK50

⻬⻬

10 V, 100 V, and 300 V Full

Scale Input OMB-DBK51

⻬⻬

100 mV, 1 V, and

10 V Full Scale Input

The OMB-DBK50 and the OMB-DBK51
are eight-channel, isolated voltage-input
modules that allow OMEGA’s
OMB-DAQBOARD-2000 Series and
OMB-LOGBOOK data acquisition
systems to isolate up to eight channels of
analog input. Both the OMB-DBK50 and
OMB-DBK51 modules offer 750 V
isolation from channel-to-channel and
1250 V isolation from channel-to­system. Up to 32 modules can be
connected to one OMEGA’s
OMB-DAQBOARD-2000 Series or
OMB-LOGBOOK data acquisition for up
to 256 isolated input channels.

Isolated Signal Connections

Each channel features a disconnectable
screw terminal block that provides
access to the analog inputs.

Power

The OMB-DBK50 and OMB-DBK51
include built-in DC/DC converters,
allowing them to be operated from a

Ordering Example: OMB-DBK51 8-channel isolated low voltage-input module, $2099

H-83

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