Revision D 250 Series Maternal/Fetal Monitor 4-39
2020551-001
Maintenance: Dual Heart Rate Test (Non-Pattern)
Dual Heart Rate, FECG and US
Dual Ultrasound Modes
1. As stated previously, the dual ultrasound mode of the 250 Series Monitor
cannot be tested unless two Model 325 Simulators are used or two Model 250
Series ultrasound transducers. Do not attempt to test dual ultrasound using one
Model 325 Simulator and one ultrasound transducer. This procedure details
using two transducers since it is more practical for a test site.
2. If not already on, depress the monitor’s Record button.
Table 14. Dual Heart Rate Test (Non-Pattern) Simulator Settings
Section Switch Setting
FECG/MECG
Rate/CMR RATE
Rate 120 bpm
Mode FECG
QRS Amplitude 50 µV
QRS Polarity +
ULTRASOUND/FMD
Mode US
Level MED
Rate RAMP
GENERAL Pattern Memory Off
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