Revision B 120 Series Maternal/Fetal Monitor 6-7
2015590-001
Functional Checkout Procedure: MECG Test
MECG Test
This portion of the functional checkout procedure ensures the integrity of the MECG
circuitry and the heart rate channel of the recorder.
1. Connect the simulator’s ECG sub-cable to the
MECG connector on the monitor
adapter cable.
2. Connect the simulator’s UA sub-cable to the
UA receptacle on the monitor.
3. Set the switches on the Model 325 Input Simulator according to Table 6-1.
4. If not already on, depress the monitor’s
Record pushbutton.
5. Turn the simulator’s
Manual Adjustment knob fully counterclockwise and
verify the following on the monitor’s display:
The MHR value is 30 BPM.
The MHR/P mode is MECG.
The MHR heartbeat indicator ( ) flashes at a rate of 30 times per minute.
The UA mode is TOCO.
6. Access the Install Options screen and note the default TOCO reference value.
7. Press the monitor’s front panel
UA Reference pushbutton.
8. Verify the following on the monitor:
The UA value is referenced to the default value.
The recorder prints a continuous line at the default value on the bottom grid
of the strip chart paper.
The recorder prints the messages MECG, TOCO, and UA REF on the strip
chart paper.
9. Turn the simulator’s
Manual Adjustment knob to input an MECG signal of
approximately 60 BPM. Verify the following on the monitor:
The MHR value is 60 BPM.
The MHR heartbeat indicator ( ) flashes at a rate of 60 times per minute.
The ECG “beep” volume can be heard from the rear panel speaker. The
volume can be adjusted on the MHR/P Setup screen.
The recorder prints a continuous line at 60 BPM on the top grid of the strip
chart paper.
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