GE Solar 8000M/i, Service Manual

Page: 159 / 192

2026265-075C Solar 8000M/i patient monitor A-7
Appendix A – Technical specifications: Tram modules and Solar parameter functionality
Tram modules and Solar parameter functionality
Tram module processing
Main Processor: Motorola 68000, 16/32 bit, 14.75 MHz
Input/Output Processor: Intel 80C152, 8 bit, 14.75 MHz
Data Acquisition Processor: Intel 80C152, 8 bit, 14.75 MHz
Sp02 Processor: Intel 80C196, 8 bit, 7.3 MHz
ECG
Standard leads available: I, II, III, V1 to V6, aVR, aVL, and aVF
Leads analyzed simultaneously: Tram 451, 451M, 451N, 851, 851M, 851N: Twelve (I, II, III, V1 to V6, aVR, aVL, and aVF)
All others: Four (I, II, III, and V1) in multi-lead mode
Lead fail: Identifies failed electrodes and switches to intact one(s)
Lead fail sensing current: Active electrodes: < 25 nA each, reference electrode: <200 nA
Waveform display aspect ratio: 0.46 sec/mV (amplitude = 12 mm/mV, length = 26 mm/sec) for a 25 mm/sec sweep rate
displayed on a 17-inch diagonal display
Input specifications:
QRS detection range:
±
0.5 mV to
±
5 mV
Signal width: 40 ms to 120 ms (Q to S)
Heart rate range: 30 to 300 beats per minute
Input impedance:
Common mode: >10 M at 50/60 Hz
Differential: >2.5 M from dc to 60 Hz
Common mode rejection: 90 dB minimum at 60 Hz
Gain accuracy:
±
5% (diagnostic mode)
Linearity deviation:
±
5%
Noise: <30
μ
V (referred to input)
Accuracy of the input signal
reproduction
Overall System Error is tested using the method described in AAMI EC11 3.2.7.1. Overall
System Error is +5%. Frequency Response is tested using the method described in
AAMI EC11 3.2.7.2 methods A and D.
Modulating effects in digital systems
This device uses digital sampling techniques that may produce some variation in
amplitudes of Q, R, and/or S waves from one heart beat to the next, which may be
particularly noticeable in pediatric recordings. If this phenomenon is observed, the
clinician should be aware that the origin of amplitude variations is not entirely physiologic.
For measuring voltages of Q, R, and S waves, it is advisable to use the QRS complexes
with the largest deflection of the particular waves.
Output specifications:
Frequency response: Tram 451, 451M, 451N, 851, 851M, 851N:
Adult mode: 0.05 to 100 Hz
OR mode: 0.05 to 25 Hz
Neonatal mode: 0.5 to 40 Hz
All others: 0.05 or 0.5 to 100Hz (user selectable)