GE B20 User Manual page 142

Figure 4b halved
amplitude:
Figure 4b
normal amplitude:
Figure 4b
doubled amplitude:
ST
ST numeric range
ST numeric accuracy
ST numeric resolution
Pacemaker detection
Input voltage range
Input pulse width
Input overshoot
Overshoot time
Pacer pulse rejection of
fast ECG signals
NOTE: Pacemaker detector may not operate correctly during the use
of high-frequency (HF) surgical equipment. The disturbances of HF
surgical equipment typically cause false positive pacer detection.
7.0 s (6.1 to 7.5 s)
5.8 s (4.5 to 7.4 s)
6.1 s (5.1 to 7.0 s)
-9 to 9 mm (-0.9 to 0.9 mV)
±0.2 mm or ±10%, whichever is
greater (within the range of -8 to 8
mm)
0.1 mm
2 to 700 mV
0.5 to 2 ms
Specified for both Method A and
Method B required in IEC 60601-2-27
201.12.1.101.13
< 10 ms
2.0 V/s (according to the test defined
in IEC 60601-2-27 201.12.1.101.12)
138
Direct cardiac application:
The display area reserved for the ECG measurement in the
monitoring system screen may not be adequate for displaying the
complete ECG amplitude when measuring ECG direct from the
surface of the heart. Clipping of the signal can be reduced by
adjusting the size of the signal on the screen (for example, from the
default 1.0 to 0.2) in the ECG menu.
Impedance respiration specifications
Measurement range
Measurement accuracy
Nomalized respiration
sensing current
Impedance respiration
carrier frequency
4 to 120 resp/min
±5% or ±5 resp/min, whichever is
greater
≤5.0 µA
31.25 kHz