CTS60
RF Connection
1094.0006.60
5.1
E-2
5 RF
connection
5.1
RF Connection of the Device Under Test Using an Antenna
Coupler
Manufacturers of DECT units do not normally provide an RF socket in the unit so connection with an
antenna is usually the only means of testing DECT units.
In order to make accurate, reproducible measurements it is necessary to work with an accurately
defined attenuation. Separate input and output attenuation values can be configured for each of the
fixed and portable part user defined types.
The output attenuation value is used when setting the RF transmit level of the CTS60. The RF level
configured on the CTS60 is the actual power level received by the DUT allowing for the attenuation.
The input attenuation will be applied to power measurements to ensure that these are calculated
correctly allowing for the attenuation of the coupler.
It is important to set the right attenuation values as these will affect not only the calculations but also the
hardware gain of the amplifiers. If the attenuation values that are set on the CTS60 are different from
the real attenuation of the coupler the measurements made by the CTS60 could be incorrect.
It is also important to set a right attenuation coupler, so that the input RF level is inside the allowed
range for the connector being used. Inputing an out-of-range signal will lead to incorrect measurements
being made by the CTS60, or, in an extreme case, damage to the connector. Refer to the technical
information section for the allowed RF level range for each connector.
