GE Corometrics 250cx Series Service Manual

Revision C 250cx Series Maternal/Fetal Monitor 5-17
2036947-001
Troubleshooting: FAQs
How do I change the alarm limits for Fetal
Heart Rate 1?
1. Rotate the Trim Knob to highlight the field for FHR1. (This field is at the top left on the
display, and it may read INOP, FECG, US, or US2.
2. Once you highlight the FHR1 field, press the Trim Knob. The display changes to
show the applicable <MODE> Setup screen, where mode is the current field.
3. Now rotate the Trim Knob to highlight the FHR1 High heart rate alarm limit setting.
4. Once the High heart rate alarms limit is highlighted, press the Trim Knob again. The
current setting in displayed in blinking inverse video.
5. Now rotate the Trim Knob to change the current setting. Select a value between 140
bpm and 200 bpm or Off.
6. Once you set the desired alarm value, press the Trim Knob again to confirm your
selection. The current value setting stops blinking.
7. Repeat Steps 3 through 6 for the Low heart rate alarm setting. The valid range is 60
bpm to 140 bpm or Off.
NOTE: The software does not permit the alarm settings to overlap.
8. To exit the Service mode, follow the instructions at the top of Page 16.
How do I change the alarm limits for Fetal
Heart Rate 2?
1. Rotate the Trim Knob to highlight the field for FHR2. (This field is at the top left on the
display, and it may read INOP or US2.
2. Once you highlight the FHR2 field, press the Trim Knob. The display changes to
show the applicable <MODE> Setup screen, where mode is the current field.
3. Now rotate the Trim Knob to highlight the FHR2 High heart rate alarm limit setting.
4. Once the High heart rate alarms limit is highlighted, press the Trim Knob again. The
current setting is displayed in blinking inverse video.
5. Now rotate the Trim Knob to change the current setting. Select a value between 140
bpm and 200 bpm or Off.
6. Once you set the desired alarm value, press the Trim Knob to confirm your selection.
The current value setting stops blinking.
7. Repeat Steps 3 through 6 for the Low heart rate alarm setting. The valid range is 60
bpm to 140 bpm or Off.
NOTE: The software does not permit the alarm settings to overlap.
8. To exit the Service mode, follow the instructions at the top of Page 16.
Question Answer

GE Corometrics 250cx Series Specifications

General

Type	Fetal Monitor
Model	250cx Series
Manufacturer	GE Healthcare
Fetal Heart Rate Monitoring	Yes
Ultrasound Frequency	1 MHz
Recorder Speed	1, 2, 3 cm/min
Maternal Parameters	ECG, NIBP, SpO2
FHR Range	30-240 bpm
TOCO Range	0-100
Connectivity	RS-232
Power Source	AC Power
Display	Color LCD