Defibrillator Specifications
9650-0912-01 Rev. N ZOLL R Series Operator’s Guide A–5
Heart Rate
Averaging
The R Series averages the interval between the last 6 detected beats. On
startup, the R Series averages the rate between detected beats once two
beats are detected, until a full 6 beats have been received. The rate is
updated every beat. After this condition is met, the meter is updated every
beat with an average of the last 6 beats.
If a period of time greater than 5 seconds elapses without a beat detected,
the heart rate meter reports a rate of 0 bpm, which is repeated every 5
seconds.
Accuracy and
Response Time to
Irregular Rhythm
Averaging over 5 R -R intervals, per AAMI EC 13:2002:
• Ventricular bigeminy (Figure 3a) - 80.5 bpm
• Slow alternating ventricular bigeminy (Figure 3b) - 60.5 bpm
• Slow alternating ventricular bigeminy (Figure 3c) - 120.5 bpm
• Bidirectional systoles (Figure 3d) - 93.3 bpm
Response Time to
Change in Heart
Rate
• 3 seconds maximum for a step increase from 80 bpm to 120 bpm
• 6 seconds maximum for a step decrease from 80 bpm to 40 bpm
Time to Alarm for
Tachycardia
from NSR 80 to VT 195 at 1 mV: 4 seconds
from NSR 80 to VT 195 at 2 mV: 4 seconds
from NSR 80 to VT 195 at 4 mV: 4 seconds
from NSR 80 to VT 206 at 0.5 mV: 4 seconds
from NSR 80 to VT 206 at 1 mV: 4 seconds
from NSR 80 to VT 206 at 2 mV: 4 seconds
Leads Off Sensing A DC current of 0.04 uA per lead wire is supplied to the patient.
Active Noise
Suppression
The sum of all leadwire currents is returned via the active noise
suppression leadwire:
• 0.08 uA DC in 3 lead mode
• 0.16 uA DC in 5 lead mode
Pacemaker option
Type VVI demand; asynchronous (fixed rate) when used without ECG leads or
in asynchronous (Async) pacing mode
Pulse type Rectilinear, constant current
Pulse duration 40 ms ±2 ms
Pulse amplitude
(output)
Variable 0 mA to 140 mA ±5% or 5 mA, whichever is greater
Increments/decrements by a value of 2 mA
Pacing rate 30 to 180 pulses per minute (ppm) ±1.5%
Increments/decrements by a value of 2 ppm
Output protection Fully defibrillator-protected and isolated
Recorder and Stripchart Printer
Paper 80 mm thermal (grid width)
90 mm (paper width)
Speed 25 mm/s
Delay 6 seconds
Annotations Time, date, defibrillation energy, heart rate, pacer output, QRS
synchronization marker, ECG size, ECG lead, alarm, defibrillator test
result, analyze ECG, diagnostic bandwidth
Messages: ANALYSIS HALTED, NOISY ECG, SHOCK ADVISED, NO
SHOCK ADV.
Printing method High-resolution, thermal array print head
Printout modes Manual or automatic; user-configurable
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