Panasonic EWBU30 Operating Guide

GB25

English

GB26

English

The model EW-BU30 is intended for use in the electromagnetic environment specified below. The 

customer or the user of the model EW-BU30 should insure that it is used in such an environment

Conducted RF 

IEC 61000-4-6

Radiated RF 

IEC 61000-4-3

3 Vrms 

150 kHz to 

80 MHz

3 V/m 

80 MHz to 

2.5 GHz

3 Vrms

3 V/m

Portable and mobile RF communications equipment should be used 

no closer to any part of the model EW-BU30, including cables, than 

the recommended separation distance calculated from the equation 

applicable to the frequency of the transmitter.

Recommended separation distance

√P  80 MHz to 800 MHz

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 strength 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.

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 model EW-BU30 

is used exceeds the applicable RF compliance level above, the model EW-BU30 should be observed to verify 

normal operation. If abnormal performance is observed, additional measures may be necessary, such as 

reorienting or relocating the model EW-BU30.

b  Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.

The model EW-BU30 is intended for use in an electromagnetic environment in which radiated RF 

disturbances are controlled. The customer or the user of the model EW-BU30 can help prevent 

electromagnetic interference by maintaining a minimum distance between portable and mobile RF 

communications equipment (transmitters) and the model EW-BU30 as recommended below, according 

to the maximum output power of the communications equipment.

0.01

0.12

0.12

0.23

0.1

0.38

0.38

0.73

1

1.2

1.2

2.3

10

3.8

3.8

7.3

100

12

12

23

For transmitters rated at a maximum output power not listed above, the recommended separation 

distance d in meters (m) can be estimated using the equation applicable to the frequency of the 

transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the 

transmitter manufacturer.

NOTE 1:  At 80 MHz and 800 MHz, the separation distance for 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.

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2009/07/09   8:18:13