Innomed Medical Hear Screen 112C-1, Service Manual

Page: 5 / 47

Innomed Medical Heart Screen 112C-1 Service manual
5/47 D-7443-1-C
Lead groups
Standard: 3 channels: I-III; aVR-aVF; V1-V3; V4-V6
6 channels: I – aVF; V1 – V6
12 channels: I…V6
Cabrera: 3 channels: aVL I -aVR; II aVF III; V1- V3; V4-V6
6 channels: aVL I –aVR II aVF III; V1 V2 V3 V4 V5 V6
12 channels: aV…V6
Heart frequency measurement
Measurement range 30 – 300 BPM
Accuracy

1 BPM or

2%
ECG amplifier
Input signal range

10 mV
Frequency response
0,05 Hz…150 Hz +0,-3 dB
Voltage measurement relative error
in the 0,5 - 10 mV range

3%
Sensitivity 2.5, 5, 10, 20 mm/mV Auto
Noise referred to the input
max. 20

Vpp
Input impedance (informative) min. 20 MOhm
CMRR min. 100 dB
DC tolerance
min.

320 mV DC
Pacemaker tolerance max. 700mV/2ms
Pacemaker detection min.2 mV/0,5 ms max. 700mV/2ms
Time constant min. 3,2 sec
Patient leakage current
max. 10

A
Electrode failure detection by channels
Calibrating signal (software generated) 1 mV / 300 ms
Muscle filter (digital) 35 Hz +0/-3 dB
Line filter (digital) 50 / 60 Hz
Line filter - 20 dB point:
50 Hz filter: 48,5 … 51,5 Hz
60 Hz filter: 59 … 61 Hz
Baseline filter (digital) under 0,3 Hz: complete suppression
over 0,9 Hz: complete transfer
Amplifier error messages Audio and visual signal in case of
input level error and noisy signal
Patient cable type
Innomed approved patient cable Defibrillator protected 10-lead cable
4-lead cable
Defibrillator tolerance
Only with defibrillator protected cable!
max. 360 J, 5000 V
Digitalizing features
Data acquisition 12-lead, simultaneous (within 100us)
Sampling frequency 8000 Hz / channel
A/D resolution 24 bit, 0.076uV/bit
Nominal processed signal range

700 mV
Stored signal resolution 500 Hz 10 uV/bit
Resolution in case of PC connection during online ECG
transfer
500 Hz 5

V/bit
Printing features
Effective recording width per channel 40 mm, overlap allowed
Printer head resolution In amplitude direction: 8 points / mm
On the time axis: 8 or 16 points / mm