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Accessory Testing
Chapter 9 Preventive Maintenance, Care and Cleaning 97
Accessory Testing
Testing Toco
Transducers
Visual check Ensure that there are no cracks in the transducer dome, cable or connector plug.
Electrical check 1. Switch on the monitor and the recorder.
2. Check configuration setting C11 (External TOCO gain) is set to 100% (C11 = 0): See
“Configuring the Monitor” on page 32.
3. Connect the transducer to the Toco socket. When you connect the transducer:
The Toco display shows 20.
TOCO ext, time, date and paper speed are printed on the paper.
4. Lay the transducer face up on a flat surface for a few seconds.
5. Press the Toco Baseline key to re-adjust the Toco display to 20.
6. Turn the transducer over so that the button is face down on the flat surface. Hold the
cable at a point 25 cm from the transducer and ensure that the transducer touches the
flat surface only with the button and that the transducer is parallel to the flat surface.
The Toco display should read between 40 to 50 units.
Figure 9-1 Testing a Toco Transducer
If the test fails, repeat using another transducer. If it still fails, refer to
Chapter 8, “Troubleshooting Flowcharts.” After the test, you must zero the system by
pressing the Toco Baseline Key.
Note— The external Toco recorder can be between 0 and 127 units.
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