Rohde and Schwarz FSH-K44 - 3GPP WCDMA BTS/NodeB Pilot Channel and EVM Measurement Option

When commissioning and maintaining base stations, users need a quick overview of the modulation characteristics, the power of the code channels and the signal quality. The R&S FSH-K44 option demodulates 3GPP WCDMA base station signals and performs a detailed analysis. In addition to the total power, it measures the power of the most important code channels such as the common pilot channel (CPICH), the primary common control physical channel (P-CCPCH) and the primary and secondary synchronization channels (P-SCH and S-SCH). It also displays the carrier frequency offset and the error vector magnitude (EVM) which is used to draw conclusions about signal quality.

The ratio of the chip energy (EC) to the power density of the interference signal (I0) provides information about the signal-to-interference ratio. The scrambling code can be determined at the press of a button and used automatically for decoding the code channels. For a quick overview of adjacent base stations, the R&S FSH provides up to eight scrambling codes with associated CPICH power.

Equipped with the isotropic antennas of the R&S TS-EMF measurement system, the R&S FSH-K44 can also measure the electrical field strength of the WCDMA signal.

The R&S FSH-K44 option is easy to use. Only three operating steps are required to display the measurement results:

• Select the 3GPP WCDMA function
• Set the center frequency
• Start the scrambling code search

FSH-K44 and FSH-K44E

The R&S FSH-K44E is an additional option which provides code domain power measurements for in-depth WCDMA/HSDPA/HSPA+ analyses. This option allows the channel power of occupied and unoccupied code channels to be graphically displayed. The resulting summary provides an overview of key signal parameters such as RF channel power, code channel power and composite EVM. The code domain channel table contains additional information such as symbol rate, channel number with the associated spreading factor and automatic detection and display of the channel type.

Please note, the FSH-K44E requires purchase of the FSH-K44.