Revision C 250cx Series Maternal/Fetal Monitor 4-35
2036947-001
Maintenance: Dual Heart Rate Test (Non-Pattern)
1. Connect the appropriate simulator sub-cables to the corresponding connectors on
the monitor.
2. Enable the modes on the simulator.
3. Set the simulator’s Pattern Memory switch to the ON position.
4. If not already on, depress the monitor’s Record button.
5. Verify the following on the monitor:
Each heart rate area (FHR1, FHR2, and/or MECG) responds accordingly
for value, mode, and heartbeat indicator.
The UA area responds accordingly for value and mode.
The recorder responds appropriately in both trending and message
information.
NOTE: Refer to the Model 325 Simulator Product Manual for illustrations of the
patterns to be expected on the monitor.
Dual Heart Rate Test (Non-Pattern)
FECG/US Modes
1. Connect the FECG/MECG adapter cable to the
FECG/MECG
connector on the
250cx Series Monitor.
2. Connect the Model 325 Simulator’s ECG cable to the FECG input on the
monitor’s “Y” adapter cable.
3. Connect the simulator’s US cable to the monitor’s US input connector.
4. Set the switches on the Model 325 Simulator according to Table 7.
5. If not already on, depress the monitor’s Record button.
6. Verify the following on the monitor:
The FHR1 value reads 120 bpm ± 1 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 “Dual
Heart Rate, FECG and US” on page 4-36.)
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 “Dual Heart
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