UL/DL Switching Transient Analysis: In TDD systems, the transmitter switches between uplink and downlink on the same frequency—and those transitions generate transient spectral emissions. The TDD-LTE option, combined with the UTS7000A's 100% POI real-time analysis, captures these switching events that can cause interference to adjacent channels or time slots. Swept analyzers routinely miss these transients because they're not looking at the right frequency at the right time.
Subframe Configuration Awareness: TDD-LTE supports 7 different uplink/downlink configurations (0–6) that determine which subframes are uplink, downlink, or special. The TDD-LTE option automatically identifies the configuration and demodulates each subframe type correctly—you don't need to manually specify the frame structure.
CBRS/Band 48 Private Network Testing: CBRS at 3.5 GHz is driving rapid growth in private LTE and 5G enterprise networks—manufacturing plants, warehouses, ports, campuses, and hospitals deploying their own cellular infrastructure. These deployments use TDD-LTE (and increasingly TDD 5G NR) and require the same transmitter compliance testing as public networks. The TDD-LTE option provides the EVM, ACLR, and power measurements needed for FCC Part 96 compliance and SAS (Spectrum Access System) coordination.
Time-Slot Power Analysis: TDD systems require verification that power levels are correct during each time slot and that the transmitter is properly silenced during receive time slots. The TDD-LTE option reports power per subframe, enabling verification of the complete TDD power profile including guard periods and switching times.