Aspect BIS VISTA Spécifications télécharger pdf (Page 45)

SECTION 6 PREVENTIVE MAINTENANCE

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6-5

6. If the Sensor Check is successful, repeat the test by pressing the [SENSOR

CHECK] touch key. The Sensor Check Graphic Screen displays. During the test

sequence, flex the cable and connections at the PIC/SENSOR, and PIC/BISx

connections. Note that gentle flexing of these cables and connectors should not

cause the Sensor Check to fail.

NOTE:

Sensor Check is used in clinical application as an indicator of the patient’s

skin conductivity. When used with a Sensor Simulator or Test Sensor, the

Sensor Check serves to test the cable conductors of the BISx and PIC, and

the status indications noted above indicate the ability of the BISx and PIC to

conduct the sensor check signal. Values that are too high indicate a need to

investigate and possibly replace the PIC or BISx.

Expected Impedance Values

Sensor Simulator Values Test Sensor Values

Electrode # Typical Range Electrode # Typical Range

1 5 K Ohms 4-6 K Ohms 1 1 K Ohms 1-2 K Ohms

2 10 K Ohms 8-17 K Ohms 2 1 K Ohms 1-3 K Ohms

4 4 K Ohms 3-5 K Ohms 4 1 K Ohms 1-2 K Ohms

3 3 K Ohms 2-4 K Ohms 3 1 K Ohms 1-2 K Ohms

6.3 Checking the Battery

The battery must be tested periodically to verify that the BIS VISTA Monitoring System will

continue to operate during power outages. To test:

1. Charge the BIS VISTA monitor by leaving it plugged into A/C power for at least 6

hours. The monitor charges while in either Standby mode (yellow light) or ON

(green light).

2. Disconnect the A/C cord from the wall supply.

3. Verify that the BIS VISTA Monitoring System operates reliably for 45 minutes.

4. Recharge the battery.

WARNING

ELECTRICAL SHOCK HAZARD: DO NOT REMOVE MONITOR

COVERS DURING OPERATION OR WHILE POWER IS

CONNECTED TO MONITOR.

GROUND WIRE LEAKAGE CURRENT MUST BE CHECKED

WHENEVER INSTRUMENT CASE IS OPENED BY A

QUALIFIED BIOMEDICAL ENGINEERING TECHNICIAN.

Caution:

Check the battery periodically by operating a BIS VISTA monitor that

has been disconnected from the wall socket and that has been charged

to full capacity (at least 6 hours of charge time). After long periods of

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Aspect BIS VISTA Spécifications Page 45