Cambium Networks cnReach N500 Handleiding (253 Pagina's)

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cnReach N500 User Guide

Tasks and Best Practices

phn-4673_002v000 (March 2018)

4-13

Notes for Bench Testing

Note

– Transmit power should be set so that RSSI levels are between -40dBm and -80dBm.

– For a bench test, this usually means setting the Transmit Power to 100 mW and adding

20dB of inline attenuation and test antennas with both radios set about 3ft apart.

– If a radio port is not being used, set it as EP with a network ID not currently in use. This

will place that radio module in listen-only mode.

– Radios need to be separated by at least 10 feet to achieve good performance.

– Tx Power needs to be at least 100mw for QAM modulation to work.

– RSSI should be lower than -60dBm to avoid overheating.

Attention

When lab/bench testing with the optional 0dBi test antenna, it is recommended to install

20dB coaxial attenuators and adjust the transmit power to 100 mW.

80dB of fixed attenuation is CRITICAL when CABLING radios together with test coax. This

is to prevent permanent damage to the radio’s front-end when exposed to extreme RSSI

levels.

RSSI should be below -40dBm.

Cambium Networks tests the front-end for damage during the RMA process. Extreme RSSI

resulting from improper use that causes subsequent damage is considered outside of

warranty coverage.

Using a paper clip instead of a proper antenna may damage the TNC connector, which may

adversely impact performance when deployed.

Cambium Networks inspects the TNC connector during the RMA process. Improper use

that causes subsequent damage is considered outside of warranty coverage.

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