TD-SCDMA testing

Anritsu has introduced three options that are claimed to make its BTS Master and Spectrum Master families the first TD-SCDMA handheld test system for deploying, installing and maintaining TD-SCDMA networks.

Field engineers, technicians and contractors can now accurately make RF, demodulation and over-the-air measurements on TD-SCDMA signals.

The RF measurement option offers a suite of test tools, including channel spectrum and power vs time. The channel spectrum view shows the shape of the transmitter and displays the signal’s channel power and occupied bandwidth.

In addition, it displays the channel power and occupied bandwidth of the left and right channels.

A power vs time view displays the power over one frame of the signal, or can zoom into a slot selected by the user. In the frame view, individual slot powers are also displayed.

Numerical results displayed include channel power, UpPTS (Uplink) power, DwPTS (Downlink) power, on/off ratio, slot peak-to-average ratio and the Downlink-Uplink delta power.

Demodulation measurements are used to measure the modulation performance of the selected node B transmitter’s signal.

The BTS master and spectrum master can display code domain power data screen and demod summary screens.

The CDP data screen displays the power of the 16 codes of a demodulated TD-SCDMA signal.

OTA measurements provide an easy way to monitor all 32 user codes outside a base station. Spectrum master displays the codes in two formats indicating distance from a base station. Code scan view displays all 32 codes in a bargraph with their individual Ec/Io and Tau.

The code scan view also displays the DwPTS power and the pilot dominance.

The options can be used with the MT8222A BTS master and the spectrum master MS2721B, MS2723B and MS2724B analysers.

The MT8222A is for complete 2G/3G/4G base station testing. The MS2721B, MS2723B and MS2724B are ultra-portable 7.1, 13 and 20 GHz spectrum analysers.