GE Corometrics 126

6-28 120 Series Maternal/Fetal Monitor Revision B
2015590-001
Functional Checkout Procedure: Dual Heart Rate Test (Non-Pattern)
Dual Heart Rate Test (Non-Pattern)
FECG/US Modes
1. Connect the FECG/MECG adapter cable to the FECG/MECG connector on the
120 Series Monitor.
2. Connect the Model 325 simulator’s ECG sub-cable to the
FECG input on the
monitor’s adapter cable.
3. Connect the simulator’s US sub-cable to the monitor’s
US input receptacle.
4. Set the switches on the Model 325 Simulator according to Table 6-6.
5. If not already on, depress the monitor’s
Record pushbutton.
6. Verify the following on the monitor:
 The FHR1 value reads 120 BPM.
 The FHR1 mode reads FECG.
 The FHR1 heartbeat indicator ( ) flashes at a rate of 120 times per minute.
 The FHR2 value varies between approximately 50 and 210 BPM.
 The FHR2 mode reads US.
 The FHR2 heartbeat indicator ( ) flashes at a rate consistent with the
value.
 The recorder prints the messages FECG and US on the center margin of the
strip chart paper.
 The recorder prints a continuous plain black line ( ) on the 120 BPM
mark on the heart rate channel of the strip chart paper. (Refer to Figure 6-
9.)
 The recorder prints a bold black ramp trace ( ) between 50 and 210
BPM on the heart rate channel of the strip chart paper. (Refer to Figure 6-
9.)