Welch Allyn PROPAQ CS Manuel de service télécharger pdf (Page 54)

50 Calibration Welch Allyn Propaq CS Vital Signs Monitor

Calibrating realtime ECG out

1. Connect the 5-lead ECG cable to the monitor and the simulator.

2. Set the simulator to 80 bpm, normal sinus rhythm.

3. Set the monitor to Lead II.

4. Connect the dc-coupled oscilloscope probe to P9 pin 6 on the Digital PCB, and the

reference probe to TP4 on the Digital PCB.

5. On the Analog Board, carefully short together U55 pins 1 and 2.

6. Adjust RP6 on the Analog PCB to 0.0 ± 0.1 V dc.

7. Remove the short and check for an ECG signal displayed on the oscilloscope of 1.0 ±

0.1 V baseline to peak of the R-wave.

8. Disconnect the ECG cable from the monitor.

Figure 4. Digital PCB measurement and adjustment locations

digital board la youtdigital b oard layout

U31

TP4

Pin 6

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 141 142

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Welch Allyn PROPAQ CS Manuel de service Page 54