Subjects can squeeze the bulb by hand or apply pressure via foot, thigh, etc. to indicate a response while in the MRI.
The TSD114-MRI consists of
pump bulb (RXPUMPBULB)
pressure transducer (TSD104A)
tubing (AFT30-XL)
Pass the tubing from the chamber room through the waveguide to interface with the TSD104A Pressure Transducer in the control room.
The output of the TSD114-MRI device is ultimately voltage. The device provides a output voltage which moves in a variably linear fashion with respect to applied pressure in the squeeze bulb. To obtain usable voltage output, the device requires amplification via BIOPAC's DA100C.
The device has high accuracy for pressure measurements, on the order of ±1%. It's based on pneumatic principles of operation. It comes equipped with a 10 meter polyethylene tube; additional polyethylene tube extensions are available from BIOPAC.
Using with third-party A/D converters
To use the TSD114-MRI with a third-party A/D converter, use DA100C and IPS100C.
DA100C amplifies and conditions the mV level signal coming from TSD114-MRI
IPS100C will supply isolated power to DA100C
High level output voltage (anywhere in the range of ±10 V, such as 0-5 V) can be obtained via the front panel of IPS100C, via 3.5 mm phono plug. This signal can be directed straight to the third-party A/D converter.
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