27
power rating of the transmitter in
watts (W) according to the
transmitter manufacturer and d is
the recommended separation
distance in metres (m). Field
strengths from fixed RF
transmitters, as determined by an
electromagnetic site survey,
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.
a. Field 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 Fetal
Doppler is used exceeds the applicable RF compliance level
above, the Fetal Doppler should be observed to verify normal
operation. If abnormal performance is observed, additional
measures may be necessary, such as re-orienting or relocating
the Fetal Doppler.
4.5 BATTERY .....................................................................11
SECTION 5: OPERATION PROCEDURE ..............................12
5.1 PREPARATION ..............................................................12
5.2 DETECTING ..................................................................14
5.3 RECORDING .................................................................16
SECTION 6 PREVENTIVE MAINTENANCE ..........................16
6.1 MAINTENANCE ..............................................................16
6.2 VISUAL INSPECTION ......................................................18
6.3 CLEANING PRODUCT AND ACCESSORIES .........................19
6.4 DISINFECTIONS .............................................................21
6.5 RECYCLE BATTERIES ....................................................21
6.6 AUTHORIZED REPAIR SERVICE .......................................21
SECTION 7: TECHNICAL SPECIFICATIONS .......................21
APPENDIX A EMC INFORMATION.......................................25
