BCI Advisor, Руководство по обслуживанию

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Chapter 5: ECG Technical Reference
5-2 Advisor
®
Service Manual
Display Aspect Ratio
The 2X option meets the aspect ratio requirements of EC13 (0.4± 0.08 s/mV).
Pacemaker Pulse Rejection Capability
Pacemaker pulses without over/undershoot:
All pulses with ampl/- 2 mV and +/- 700 mV with pulse widths 0.1 ms and 2.0 ms are detected and •
rejected.
The displayed HR for pacemaker pulses alone for all combinations of the specified pulse parameters is 0 •
bpm.
For pace pulses with a normally paced QRS-T at 60 bpm, the displayed HR is 60 bpm. •
For a normally paced QRS-T at 60 bpm with atrial and ventricular pacing pulses, the displayed HR is 60 •
bpm.
For atrial and ventricular pace pulses alone, the displayed HR is 0 bpm. •
For atrial and ventricular pace pulses at 80 bpm with an ineffectively paced QRS-T at 30 bpm, the •
displayed HR is 30 bpm.
For pace pulses at 80 bpm with an ineffectively paced QRS-T at 30 bpm, the displayed HR is 30 bpm. •
Pacemaker pulses with over/undershoot:
The above tests were repeated for pace pulses with an over/undershoot of 1 mV for the +/- 700 mV pace •
pulses, and over/undershoot of 0.08 mV to 0.125 mV for +/- 2 mV pace pulses.
For the over/undershoot, the recharge time constant was 4 ms to 8 ms. •
For all cases, the displayed HR was identical to the applied HR, and all pace pulses were detected and •
rejected.
Audible Alarms
An audible alarm is located at the bedside. Alarm sounds and amplitudes conform to the EC-13 specifications.
Visual Alarms
Visual alarms are located at the bedside. Visual alarms consist of a flashing parameter value in the parameter
box, which is in alarm and an alarm message at the top of the display. The word ‘ALARM’ flashes in red at the top
of the display at a 2 Hz rate. The word ‘ALARM,’ as it appears on the display, is 15.3 mm long X 3 mm high. Alarm
messages that are displayed in the ECG parameter box are 3 mm high. Visual alarms cannot be disabled. All alarm
conditions are checked once each second and the display is updated to indicate the alarm status.
Line Isolation Transients
See the warnings, cautions, and notes in Chapter 7: ECG in the Advisor
®
Operation Manual for proper operating
conditions and lead placement.
8.73 mm/mV
25.15 mm/s
= 0.35 s/mV