GE Corometrics 250cx Series User Manual

11-16 250cx Series Maternal/Fetal Monitor Revision C
2036946-001
Recorder Modes: Strip Chart Paper
Strip Chart Paper
Instructions for loading the strip chart paper are provided in Chapter 4, “Setup
Procedures”. Two kinds of strip chart paper are available from GE.
 Z-Fold Chart Paper with Pre-Printed 30–240 bpm Heart Rate Scale (Refer to
Figure on Page 11-17.)
 Z-Fold Chart Paper with Pre-Printed 50–210 bpm Heart Rate Scale (Refer to
Figure on Page 11-18.)
In the United States of America, the most common grid is the 30-240 bpm scale with
the recorder speed set at 3 cm/min. As shown in Figure on Page 11-17, a dark line is
printed every 3 cm, which represents 1 minute in time at a speed of 3 cm/min.
In other countries, the most common grid may be the 50–210 bpm scale with the
recorder speed set at 1 cm/min. As shown in Figure on Page 11-18, every other
vertical line measures 1 cm, or 1 minute in time at a speed of 1 cm/min.
Regardless of the heart rate scale, the uterine activity scale is pre-printed from 0–100
mmHg (0.0–13.3 kPa); this same scale is used for relative units. When SpO
2
and
monitoring is in progress, the scale is printed on the paper by the recorder. The
Figures on pages 12-3 and 12-4 also call out the top grid, bottom grid, and the
annotation area for each style paper.

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