Operating instructions

ER910/920 and ER910/920 AF Event Monitor

Recommended Separation Distances

Refer to the following table for recommended separation distances

between the ER9xx and portable and mobile RF communications

equipment.

The ER9xx is intended for use in an electromagnetic environment in

which radiated RF disturbances are controlled. The user of the ER9xx

can help prevent electromagnetic interference by maintaining a minimum

distance between portable and mobile RF communications equipment

(transmitters) and the ER9xx as recommended below, according to the

maximum output power of the communications equipment.

Separation distance according to

frequency of transmitter

Rated maximum

output power of

transmitter

150 kHz

to 80 MHz

d = 1.2 √ P

80 MHz

to 800 MHz

d = 1.2 √ P

800 MHz

to 2,5 GHz

d = 2.3 √ P

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 metres (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.

NOTE1: 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.