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Revision C 250cx Series Maternal/Fetal Monitor 4-23

2036947-001

Maintenance: FECG Test

FECG Test

This portion of the functional checkout procedure ensures the integrity of the FECG

circuitry and the heart rate channel of the recorder.

1. Connect the simulator’s ECG cable to the

FECG

connector on the monitor’s “Y”

adapter cable.

2. Connect the simulator’s UA cable to the UA connector on the monitor.

3. Set the switches on the Model 325 Input Simulator according to

Table 2

4. If not already on, depress the monitor’s Record button.

5. Turn the simulator’s Manual Adjustment knob counterclockwise and verify the

following on the monitor’s display:

 The FECG value is 30 bpm.

 The FECG mode is FECG.

 The FECG heartbeat indicator ( ) flashes at a rate of 30 times per minute.

 The UA mode is TOCO.

6. Depress and hold the monitor’s

UA Reference

button and release when the UA value

shows 10 relative units in mmHg mode or 1.3 kPa in kPa mode. Verify the following

on the monitor:

 The UA value is referenced to 10 mmHg (1.3 kPa) on the display.

 The recorder prints a continuous line at 10 mmHg (1.3 kPa) on the bottom

grid of the strip chart paper.

 The recorder prints the messages UA REF on the strip chart paper.

7. Turn the simulator’s Manual Adjustment knob to input an FECG signal of

approximately 120 bpm. Verify the following on the monitor:

 The FECG value is 120 bpm.

 FECG heartbeat indicator ( ) flashes at a rate of 120 times per minute.

 The ECG “beep” volume of the rear panel speaker can be increased or

decreased using the left pair of Volume buttons. (Set the volume to the

desired level.)

 The recorder prints a continuous line at 120 bpm on the HR grid of the strip

chart paper.

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