GE Corometrics 250 Series User Manual

Revision D 250 Series Maternal/Fetal Monitor A-5
2020551-001
Technical Specifications Operating Modes
MECG Mode
Technique:
Maternal ECG Electrode Type:
Leads Available:
Heart Rate Counting Range:
Heart Rate Resolution:
Heart Rate Averaging:
Heart Rate Update Rate:
Countable Input Signal Range:
Baseline Drift:
Tall T-wave Rejection:
Heart Rate Meter Response Time:
80–120 bpm Step Increase:
80–40 bpm Step Decrease:
Alarm Time for Tachycardia 80–200 bpm:
Offset Voltage Tolerance (Differential):
Maximum Common Mode Voltage:
Preamplifier Bandwidth:
Common Mode Rejection:
Balanced:
Unbalanced 5K RA or LA:
Input Equivalent Noise: Input Impedance:
Differential:
Common Mode:
Mains Frequency Rejection:
Leakage Current:
Isolation, Mains-to-Patient:
Leads Off Detection:
Alarms:
Audio:
Visual:
Limits:
Technical:
Tachycardia Response Time:
Peak detecting, beat-to-beat cardiotachometer
Medtronic 1700-003 or equivalent
I, II, and III
30–240 bpm
± 1 bpm
1-second average
> 1 update per second
0.5 mV to 5 mV peak-to-peak
< 0.5 mV RTI
0.8
x QRS amplitude
< 2 seconds
< 3 seconds
< 10 seconds (high alarm limit at 100 bpm)
± 300 mVdc maximum
20 V peak-to-peak
0.6 to 40 Hz
> 80 dB at mains frequency, with patient cable
> 50 dB at mains frequency
< 30 µV peak-to-peak
> 2.5 MΩ
> 10 MΩ
> 40 dB
< 60 µA at 254 VAC, with cable, electrically isolated
> 4 kVAC
dc current < 0.1 µA
Alternating 1.5-second chimes
Flashing heart rate numeric or message
User-selectable high and low maternal heart rate
Leads off
< 8 seconds
Pacemaker Detection/Rejection:
Input Voltage Range:
Input Pulse Width:
Pulse Rise/Fall Time:
Overshoot/Undershoot:
± 2.5 mV to ± 700mV
0.1 to 2 ms
< 10% of pulse width; not greater than 100 µs
2 mV
CAUTION
Excessive overshoot time of pacemaker pulse may cause false QRS
detection.
Table 2. Operating Mode Specifications (Continued)

GE Corometrics 250 Series Specifications

General

Brand	GE
Model	Corometrics 250 Series
Category	Medical Equipment
Language	English