DSI Buxco FinePointe - Pressure Panel Front

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Page 15

Pressure Panel Front

Pressure panel controls

The following are descriptions and operational definitions of controls and modules on the front of the Pressure

Panel

1. Preamplifier modules (Flow, Mouth Pressure, Esophageal) - These modules provide signal amplification

and conditioning for the flow, mouth pressure, and (optionally) esophageal pressure transducers.

2. Valve Control module - This module has two purposes:

• The Positive Pressure and Negative Pressure adjustment knobs control the pressure that is maintained

in the positive and negative pressure reservoirs. The pressure levels should be set at values that

ensure the safety of the animal. By default, set them to +50 cmH2O on the positive pressure

reservoir and -50 cmH2O on the negative pressure reservoir.

• The valve control switches are used to set the valves to one of three states, On, Off, or Auto. On closes

the valve. Off opens the valve. Auto allows the FinePointe software to control the valves. Valves are

manually controlled when setting flow rates and when calibrating the lung pressure. Auto control is

used when FinePointe is controlling the system during the test recording session.

3. Signal Generator module - This module provides pre-set computer-generated waveforms. This allows you

time to learn how the system works without having to run with a live animal. When set to the Live

position, the generated signals are disabled, and live signals from the transducers are used. The control

knob must be set to the Live position when collecting data. The Volume and High Volume reset buttons

are inactive and not used by the system.

4. Power module - This module has the pressure panel On/Off switch, and 2 LEDs in the top right corner. These

two LEDs confirm that the internal power supply is functioning. If they are dim, your power supply might not be

putting out the required voltage. If they are off, the Pressure panel has no power.