GB English
Declaration – electromagnetic immunity
The 3M™ Littmann® Electronic Stethoscope Model 3200, is intended for use in the electromagnetic environment specified below. The customer or the user of Model 3200 should assure that it is used in such an environment.
Immunity test | IEC 60601 test level | Compliance level | Electromagnetic environment |
|
|
|
|
|
|
|
|
Electrostatic discharge | ± 6 kV contact | ± 6 kV contact | Floors should be wood, concrete or |
(ESD) IEC | ± 8 kV air | ± 8 kV air | ceramic tile. If floors are covered |
|
|
| with synthetic material, the relative |
|
|
| humidity should be at least 30%. |
|
|
|
|
Electrical fast transient/ | ± 2 kV for supply lines | Not applicable |
|
burst IEC | ± 1 kV for input/output lines |
|
|
|
|
|
|
Surge IEC | ± 1 kV differential mode | Not applicable |
|
| ± 2 kV common mode |
|
|
|
|
|
|
Power frequency (50/60 | 3 A/m | 3 A/m | Power frequency magnetic fields |
Hz) magnetic field IEC |
|
| should be at levels characteristic of a |
|
| typical location in a typical commercial | |
|
|
| magnetic field or hospital environment. |
|
|
|
|
Voltage dips, short | < 5% UT | Not applicable |
|
interruptions and | (>95% dip in UT) for 0.5 |
|
|
voltage variations on | cycle |
|
|
power supply lines IEC | 40% UT |
|
|
(60% dip in UT) for 5 cycle |
|
| |
| 70% UT |
|
|
| (30% dip in UT) for 25 cycle |
|
|
| < 5% UT |
|
|
| (>95% dip in UT) for 5 sec |
|
|
|
|
|
|
Declaration – electromagnetic immunity - continued
The 3M™ Littmann® Electronic Stethoscope Model 3200, is intended for use in the electromagnetic environment specified below. The customer or the user of Model 3200 should assure that it is used in such an environment.
Immunity test | IEC 60601 test level | Compliance level | Electromagnetic environment |
|
|
|
|
|
|
| Portable and mobile RF communications equipment |
|
|
| should be used no closer to any part of the Model |
|
|
| 3200, including cables, than the recommended |
|
|
| separation distance calculated from the equation |
|
|
| applicable to the frequency of the transmitter. |
|
|
| Recommended separation distance: |
|
|
|
|
Conducted RF | 3 Vrms | Not applicable | d = 1,2 √ P |
IEC | 150 kHz to 80 MHz |
|
|
|
|
|
|
Radiated RF | 3 V/m | 3 V/m | d = 1,2 √ P 80 MHz to 800 MHz |
IEC | 80 MHz to 2.5 GHz | 80 MHz to 2.5 GHz | d = 2,3 √ P 800 MHz to 2,5 GHz |
|
|
| where P is the maximum output power rating of the |
|
|
| transmitter in watts (W) according to the transmitter |
|
|
| manufacturer and d is the recommended separation |
|
|
| distance in meters (m). |
|
|
| Field strengths from fixed RF transmitters, as |
|
|
| determined by an electromagnetic site survey, a should |
|
|
| be less than the compliance level in each frequency |
|
|
| range, b |
|
|
| Interference may occur in the vicinity of |
|
|
| equipment marked with the following symbol: |
|
|
|
|
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.
aField strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the location in which the Model 3200 is used exceeds the applicable RF compliance level above, the Model 3200 should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as
bOver the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
GB English
20 | 21 |
