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-to-system.
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
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.
