Innomed Medical Hear Screen 112C-1, Руководство по обслуживанию

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Innomed Medical Heart Screen 112C-1 Service manual
18/47 D-7443-1-C
6.2 Checking technical requirements
6.2.1 Leakage current measurement
Leakage current measurement during operation with 253 V examination voltage.
Measurement place
Allowed value / µA /
Between the mains pins and the protective ground 50
Between the mains pins and the patient connection 10
Between the mains pins and the PC SIO connection 10
Between the mains pins and the oxymeter connection 10
Leakage current measurement in case of 1 error with 253 V examination voltage.
Measurement place
Allowed value / µA /
Between the mains pins and the protective ground 100
Between the mains pins and the patient connection 10
Between the mains pins and the PC SIO connection 10
Between the charging adapter connection and the patient connection 10
Between the charging adapter connection and the SIO connection 10
6.2.2 Sensitivity examination and DC tolerance checking
Apply +DC signal according to the table from a ground independent generator to the amplifier’s input (2
mVpp/10Hz sine). DC must be +320,-320 mV. Set amplifier sensitivity to *1 and monitor the lead groups. Start
on-line printing with 50 speed and measure the signal amplitude on the printout.
a. In case of DC= +320 mV
The signal’s amplitude on the examined lead must be 20 mm +/- 3 %.
P1 P2 Examined lead
L all other I
R all other II
F all other III
V1 all other V1
V2 all other V2
V3 all other V3
V4 all other V4
V5 all other V5
V6 all other V6
b. In case of DC= -320 mV
The signal’s amplitude on the examined lead must be 20 mm +/- 3 %.
P1 P2 Examined lead
L all other I
R all other II
F all other III
V1 all other V1
V2 all other V2
V3 all other V3
V4 all other V4
V5 all other V5
V6 all other V6