Technical Specification
| Electrode Pad Placement | Pad positions: RA, LA, V4, Lead: chest-modified V4 |
| Heart Rate | Mean (4 intervals) Minimum: 20 bpm Maximum: 250 bpm Tachycardia: over 120 bpm, minimum 30 seconds Bradycardia: under 50 bpm, minimum 30 seconds |
| Wide Complex Tachycardia | Heart rate: 120 bpm to 300 bpm Duration: minimum 3 beats Morphology: wide, unifocal |
| ST Segment Analysis | Depression: 1 mm (2 mm if upsloping) Measured point: J + 60 ms (J + 50 ms in tachycardia) Isoelectric point: PR segment Slope: upsloping, horizontal, or downsloping Duration: minimum 30 seconds |
| AF Detection | Irregular irregular RR intervals Variable P wave morphology Duration: minimum 30 seconds |
| Asystole | Pause: 1.7 to 3.0 seconds Arrest: over 3.0 seconds Missed beats: pauses in synchronous rhythm |
| Ectopic Beats | Ventricular: unifocal, multifocal Atrial: premature (less than 75% average RR interval) Classification: isolated, trigeminy, bigeminy, couplet, triplet, salvo (4 to 7 beats), episode (8 or more beats) |
| Symptom Button | Up to 10 events |
| Display | Monochrome LCD with backlight Resolution: 128 × 64 pixels Sweep speed: 12.5 mm/second Gain: 5 mm/mV |
| Report Printout | ECG trace: 24 seconds, 25 mm/second Trend graph: 24 hours, 25 mm/hour |
| Physical | Size: 107 mm × 80 mm × 27 mm Weight: 200 g Power: 2 × AA batteries Index of protection: IP20 rated by design |
| Electrical | Channels: single bipolar Sample frequency: 100 Hz Sample resolution: 12-bit Frequency response: 0.1 Hz to 23 Hz Input impedance: greater than 20 MΩ |
| Environmental | Operating temperature: 0°C to 50°C Storage temperature: 0°C to 60°C Relative humidity: 20% to 65% noncondensing Shock and vibration: AAMI EC38, 4.2.1.2 |