4RF Aprisa SR+ User Manual - 6. Preparation
Preparation | 43
Aprisa SR User Manual
6. Preparation
Bench Setup
Before installing the links in the field, it is recommended that you bench-test the links. A suggested setup
for basic bench testing is shown below:
When setting up the equipment for bench testing, note the following:
Earthing - each radio should be earthed at all times. The radio earth point should be connected to a
protection earth.
Attenuators - In a bench setup, there should be 60 - 80 dB at up to 1 GHz of 50 ohm coaxial
attenuation, capable of handling the transmit power of +37 dBm (5 W) between the radios’ antenna
connectors.
Splitter – If more than two radios are required in your bench setup, a multi-way splitter is required.
The diagram shows a two way splitter.
This splitter should be 50 ohm coaxial up to 1 GHz and capable of handling the transmit power of +37
dBm (5 W).
Cables - use double-screened coaxial cable that is suitable for use up to 1 GHz at ≈ 1 metre.
CAUTION: Do not apply signals greater than +10 dBm to the antenna connection as they can damage the
receiver.