GE Corometrics 250cx Series, Service Manual, Page: 114 / 252

4-34 250cx Series Maternal/Fetal Monitor Revision C
2036947-001
Maintenance: Pattern Memory Test
4. Apply gentle pressure on the strain gauge diaphragm and verify that the display
and recorder respond to the input. Increasing force should produce an
increasing value and vice versa.
5. Disconnect the strain gauge from the front panel of the monitor. Verify the
following on the monitor:
‹
The UA value and mode are both blank.
‹ The recorder stops printing the uterine activity trace.
‹
The recorder prints the message
UA INOP
on the center margin of the strip
chart paper after approximately 20 seconds.
Pattern Memory Test
The pattern memory of the simulator can be used to test any of the following mode
combinations of the monitor.
‹
FECG/TOCO
‹ FECG/IUP
‹
MECG/TOCO
‹ MECG/IUP
‹
US/TOCO
‹ US/IUP
‹
US/FMD/TOCO
‹ US/FMD/IUP
‹
US2/TOCO
‹ US2/IUP
‹
FECG/US/TOCO
‹ FECG/US/IUP
‹
FECG/US2/TOCO
‹ FECG/US2/IUP
‹
US/TOCO/MECG
‹ US/IUP/MECG
‹
US2/TOCO/MECG
‹ US2/IUP/MECG
NOTE:
US/US2 cannot be tested simultaneously unless two Model 325 Simulators
Model 250cx Series ultrasound transducers are used. Do not attempt to
test dual ultrasound using one Model 325 Simulator and one ultrasound
transducer or a conflict between enable lines will occur.
NOTE:
FECG/MECG cannot be tested simultaneously unless two Model 325
Simulators are used.
NOTE:
Although dual heart rate can be verified using the pattern memory, an
additional procedure is given in this functional checkout procedure.
To check any of the mode combinations listed above: