Welch Allyn 1500 Patient Monitor v.1.4.X - User Manual - Manual (Page 135)

Directions for use Technical data 131
Measured values
ECG
Patient cable 3-lead, 5-lead, 12-lead cable
Automatic 3, 5 and 12 lead detection
Lead fault detection
AAMI 6 pin and 12 pin connectors
Leads Simultaneous, synchronous recording of up to nine active electrodes
giving 12 leads
Filters
Mains 50 Hz / 60 Hz / off
Bandwidth 0.05 Hz / 0.5 Hz , 35 Hz / 150 Hz
Input impedance > 2.58 MS
Heart rate range 15 to 300 beats/min
QRS tone On / Off
Protection ESU and defibrillator protected
Lead display Selectable leads
Selection of 1 to 5 simultaneous leads
Display update interval 1 second
Lead fail sense current < 0.5 :A
Tall T-wave rejection max. amplitude of the T-wave according to IEC 60601-2-27 chapter
50.102.17: 4 mV
HR averaging method The average of the last 16 beats is used, when RR interval corresponds to a
HR of < 48 bpm.
The average of the last 4 beats is used, when RR interval corresponds to a
HR of $48 bpm.
HR accuracy ± 5 % or ± 5 bpm (whichever is greater)
HR meter response time Change from 80 to 120 bpm: 11s
Change from 80 to 40 bpm: 11s
Response to Irregular
rhythm A1: 80/min
A2: 60/min
A3: 120/min
A4: 90/min
(according to IEC specification 60601-2-27, 6.8.2.bb)
Time to Alarm for
tachycardia B1 and B2: 3 s
(according to IEC specification 60601-2-27, 6.8.2.bb)
Sensitivity According to ANSI/AAMI EC13 / IEC60601-2-27