EXRBRG bridge layer

EXRBRG layer shown installed on an eDAQXR CPU

The EXRBRG layer is compatible with the eDAQXR CPU. The EXRBRG layer allows flexible configurations for a variety of applications. This layer supports bridge and high level functions formerly supported in the separate eDAQ BRG and HLS layers. Each of the 16 connectors has both 120-Ohm and 350-Ohm completion resistors connected to a different pin. Analog output is integrated into the layer. Gain steps are 0.4, 1, 4, 10, 40, 100, 400 and 1000. The layer can work with both amplified and unamplified transducers including strain gages, accelerometers, pressure transducers, load cells and other general analog signals.
    The XRBRG layer offers 16 simultaneously sampled differential analog inputs through independent connectors. The EXRBRG provides excellent strain gage conditioning with support for quarter-, half- and full-bridge configurations, with three-wire, four-wire, five-wire and six-wire solutions offered in these configurations. Automatic balancing and gain settings, as well as software selectable sample rates, excitation and digital filtering, simplify the set-up of a strain channel. There are several calibration options including defined value, external and multipoint calibrations as well as shunt calibrations with embedded software tools. The EXRBRG also provides four characterized shunt calibration resistors per channel with software selectable shunt direction for either upscale (–Sig to –Ex) or downscale (–Sig to +Ex) calibration.
    Integrated analog output signals can be used in the creation of time-domain lab durability tests. When setting up the laboratory simulation, bring the eDAQXR system into the lab with the component or vehicle. This practice is highly recommended, as it ensures that all of the transducer instrumentation and properties are identical for the lab simulation as they were for the field data collection. Instead of being recorded, the analog out signals are sent as time series data for the test rig to analyze. The controller can then develop drive files that are played into the test rig reproducing exact field dynamics in the lab. Each output channel is associated with the corresponding (like-numbered) input channel on the EXRBRG board. Calibration files are provided that are compatible with popular simulation software and that scale the analog outputs to engineering units. The maximum analog output voltage is ±9.8 volts (TBD). Each of the 16 analog channels contain simple RC filtering to smooth out stair steps created by the channel’s digital to analog converter.

Unlike legacy eDAQ layers, no jumpers must be set in the XRBRG layer for a unique layer address. After installation, internal communications are established with the CPU so new layers show in the Test configuration > Hardware view.

Optional Cables and Accessories (Order Separately)

Ordering Number Description
1-EQXR-XD-AN-PT-2 Transducer Cable, all inputs - Male 44-pin D-Sub connector to Pigtail (Twelve (12) conductor)- 2 Meters Length
1-EQXR-XD-AN-M12-2 Transducer Cable, all inputs - Male 44-pin D-Sub connector to Four (4) M12, 12-pin - 1 Meter Length
Specific configuration cables
1-EQXR-BR350-M8-2 Transducer Cable, bridge inputs - Male 44-pin D-Sub connector to Four (4) M8, 6-pin - 1 Meter Length (350 Ohm Bridge)
1-EQXR-BR120-M8-2 Transducer Cable, bridge inputs - Male 44-pin D-Sub connector to Four (4) M8, 6-pin - 1 Meter Length (120 Ohm Bridge)
1-EQXR-BR-AN-M8-2 Transducer Cable, voltage inputs - Male 44-pin D-Sub connector to Four (4) M8, 6-pin - 1 Meter Length
1-SAC-TRAN-AO-2-2 Analog out Cable, Male 19-pin connector to Pigtail - 2 Meters Length
Adapter and extension cables
1-SAC-TRAN-MP-2-2 Transducer Cable - M8 Male/Pigtail - 2 Meters Length
1-SAC-TRAN-MP-10-2 Transducer Cable - M8 Male/Pigtail - 10 Meters Length
1-SAC-EXT-MF-0.4-2 Extension Cable - M8 Male/M8 Female Connectors - 0.4 Meters Length
1-SAC-EXT-MF-2-2 Extension Cable - M8 Male/M8 Female Connectors - 2 Meters Length
1-SAC-EXT-MF-5-2 Extension Cable - M8 Male/M8 Female Connectors - 5 Meters Length
1-SAC-EXT-MF-10-2 Extension Cable - M8 Male/M8 Female Connectors - 10 Meters Length
1-SAC-EXT-MF-15-2 Extension Cable - M8 Male/M8 Female Connectors - 15 Meters Length

Connector Pin assignments

Four 44-pin D-Sub female connector on the front of the layer are marked for the 16 available channels.

Analog out 19-pin connector