6-8 120 Series Maternal/Fetal Monitor Revision B
2015590-001
Functional Checkout Procedure: MECG Test
10. Repeat step 9 for each of the following rates: 30, 120, 210, and 240 BPM.
11. Change the simulator’s
QRS Polarity switch from + to –. Verify that the
monitor does not skip any beats.
12. Set the simulator’s
ECG Rate switch to the RAMP setting. Verify that the
monitor’s MHR value counts between approximately 30 and 240 BPM and that
the recorder prints a ramp between the same values. (Refer to Figure 6-2.)
13. Set the simulator’s
ECG Rate switch to the ∆15 position. Verify the following
on the monitor:
The MHR value oscillates by 15 BPM.
The MHR heartbeat indicator ( ) flashes for each input signal.
The ECG “beep” is heard from the rear panel speaker; the volume can be
adjusted on the MHR/P Setup screen.
The recorder prints an oscillation of 15 BPM between 115 and 130 BPM on
the top grid of the strip chart paper. (Refer to Figure 6-3.)
14. Repeat step 13 for rate values of ∆22 and ∆27. The results should be the same
except that the MHR value oscillates by either 22 or 27 BPM and the recorder
prints an oscillation of 22 or 27 BPM. The top value is always at approximately
130 BPM. (Refer to Figure 6-3.)
Table 6-1. MECG Test Simulator Settings
Section Switch Setting
FECG/MECG
Main RATE
Rate MANUAL
Mode MECG
QRS Amplitude 500 µV
QRS Polarity +
GENERAL Pattern Memory OFF
UA
Main CMR
Mode TOCO
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