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Performance Procedures
4-38 Testing the Monitor
ECG Sync
Test
This test checks the performance of ECG synchronization between the monitor and a
defibrillator. The ECG sync performance test is required once every year and when the
monitor is repaired or when the monitor’s parts are replaced.
Tools Needed:
• Dynatech Nevada MedSim 300 or equivalent simulator
• Defib Sync Cable (M4820A) or Switchcraft 850
• Switchcraft 750
Two sections are needed to complete the connection from the monitor to the simulator.
1. If a Defib Sync Cable is available, connect it the ECG Sync output on the monitor, then
to the Switchcraft 750.
or
If a Switchcraft 850 is available, connect it the ECG Sync output on the monitor, then
to the Switchcraft 750.
2. Connect the Switchcraft 750 to the SYNC/A PACE input on the simulator
Connect to the monitor Connect to the simulator
Defib Sync Cable Switchcraft 750
Switchcraft 850 Switchcraft 750
Step Action
1 Connect the ECG leads and trunk cables between the monitor and the simulator
(as described above).
2 Turn on the monitor and the simulator
3 On the simulator main menu select DEFB, then CARD to set the simulator to
Defibrillator Tests/Cardioversion.
4Press Start to begin the test. If the monitor is working properly, the following
sequence of text messages will appear on the simulator over a period of
approximately 3 seconds: "cardioversion: afib", "cardioversion: sync ok", and
"cardioversion: converted" (this message will persist on the simulator)
5 If the monitor isn’t working properly, messages such as the following may
appear: "cardioversion: vfib", "cardioversion: late".