Service manual

Chapter 5 Test and Material List

5.1 Test Procedure

5.1.1 Connection and Checking

Connect the simulators, power supply and test fixture properly to the PM-9000 Express

patient monitor, and power it on. Then, the patient monitor displays the start-up screen on

the TFT screen and enters the system screen.

5.1.2 Functions of Buttons

Press every button on the button panel to check their functions as specified in PM-9000

Express Operation Manual. Rotate the control knob to check its functions.

5.1.3 ECG/RESP

The TFT screen displays the standard ECG waveform, and the error between the heart

rate and the set value of the simulator is no more than ±1, namely 60±1; the RESP

waveform is smooth, and the respiration rate is 20±1.

1. Select all leads in order, including Cal, select all the four gains and AUTO, ensure

the waveforms are displayed properly, and check whether the 50Hz/60Hz

interference can be filtered.

2. Check, in all the above-mentioned cases, the consistency between the

heartbeats, the flashes of the red heart-like indicator, and the R-wave.

3. The gain has no impact on the message “ECG signal over weak” in the HR

calculation.

4. Verify the range and precision: Suppose that the amplitude of the GCG signal of

the simulator is 1mV, the heart rates are respectively 30, 60, 120, 200, 240 and

300. Check leads I, II and III. The results should meet 29-31, 59-61, 119-121,

198-202, 238-242, and 297-303.

5. PACE pulse test: Set the simulator to PACE. You should be able to view the pace.

Change PACE amplitude to ±8 – 700mv, and pulse width to 0.1ms – 2ms. The

PACE should be legible, and LEAD OFF is displayed properly.

6. RESP measurement: Set the baseline impedance to 1K, the respiration

impedance to 0.5Ω and 3Ω, and the respiration rate to 30 and 120. The

respiration rate should be 29 – 31, 118 –122.

7. PVC test: Set the simulator to the PVC mode, and set the occurrence times. The

relevant PVCS should be obtained.

8. Set the simulator as follows: RR: 40, baseline impedance: 2KΩ, RESP waveform:

3:1. Open the apnea alarm, set the respiration resistance to 0Ω, and set various

alarm time. Alarms should be given.

5.1.4 Temperature

YSI probe

Select YSI probe from the manufacturer menu, select YSI temperature probe as

the test fixture, set the analog resistance to 1.471K, 1.355K and 1.249K. Then