Need Help with finding the waveform of pressure sennsor MPS-3117

Hi, I'm new here and there are some questions I want to ask regarding the pressure sensor. I was supposed to find the waveform of this pressure sensor from a PCB board using a oscilloscope and power supply. However, I am having problems as this sensor that I am dealing with has an '+input','-input' and '+output', '-Output' as shown in this attachment. [ATTACH]866[/ATTACH]. I have tried google and other websites but to no avail. I would really appreciate any advice given. Thank you in advance.

The circuit is a Wheatstone Bridge. Your readings will be analog directly from the circuit.

See:

[URL="http://www.engineersedge.com/instrumentation/Wheatstone_bridge/wheatstone_bridge_analysis_and_calculator_12905.htm"]Wheatstone Bridge Calculator[/URL]