User Manual

MBF, Multi Band Repeater

PRODUCT DESCRIPTION AND USER'S MANUAL

Class 1 Laser

This product is equipped with class 1 lasers, as per definition in EN 60825-1.

Caution

Un-terminated optical receptacles may

emit laser radiation. Do not stare into beam

or view with optical instruments.

Optical transmitters in the opto module can send out high energy invisible laser radiation. There is a risk for

permanent damage to the eye.

Always use protective cover on all cables and connectors which are not connected. Never look straight into a

fibre cable or a connector. Consider that a fibre can carry transmission in both directions.

During handling of laser cables or connections ensure that the source is switched off. Regard all open

connectors with respect and direct them in a safe direction and never towards a reflecting surface. Reflected

laser radiation should be regarded as equally hazardous as direct radiation.

Radiation Hazard

This equipment emits radio frequency radiation and can, if used the wrong way, be hazardous for personnel.

Here follows an example of the power densities from an intentional radiator.

For radiation from a general antenna, the power density (S) at some distance is according to the well-known

formula:

For the repeaters described in this handbook the maximum output powers are 5 W for 900 / 1800 MHz and

10 W 2100 MHz. The corresponding power densities using a + 10 dBi antenna as an example at 1 m will be 4

W/ m² for the 900/1800 MHz output and 8 W/ m² for 2100 MHZ output.

1 m distance from the antenna at these frequencies is used as a minimum distance for practical exposure of

the public. It is also difficult to have a developed EMF at distances closer than 1 m.

According to R&TTE Health requirements referring to the 1999 Council recommendation, the reference level

for the frequency range of 400 – 2000 MHz is f/ 200 W/ m² ( f in MHz ) and above 2 GHz, 10 W/ m².

For the repeaters in this manual the levels are:

GSM 900 (960 MHz) = 4.8 W/m²

DC 1800 (1880 MHz) = 9.4 W/m²

UMTS 2100 (2170 MHz) = 10 W/m².

This means that an installation with a +10 dBi antenna does not exceed the basic restriction levels according

to the recommendations.

For frequencies between 400 and 2000 MHz the ICNIRP occupational guideline level of exposure is f /40

W/m² (f in MHz), and 50 W/m² for frequencies above 2 GHz.

The ICNIRP levels for the frequency above bands:

GSM 900 (960 MHz) = 24 W/m²

DC 1800 (1880 MHz) = 47 W/m²

UMTS 2100 (2170 MHz) = 50 W/m².

There are no radiation health issues with the above + 10 dBi antenna installations. However, the repeater is

marked with radiation hazard warning.