Rohde and Schwarz CRTU-RU Universal Radio Communication Tester Unit

The Rohde & Schwarz CRTU-RU is a radio unit that expands the CRTU protocol tester for comprehensive testing across 2G and 3G communication standards. Operating as both protocol analyzer and system simulator, it supports GSM, GPRS, E-GPRS, WCDMA, HSPA, and GAN technologies with independent multi-channel configuration and inter-RAT handover capability. GCF/PTCRB approved for conformance, certification, and compliance testing, the CRTU-RU enables R&D validation, application testing (MMS, PoC, Video Telephony, Browsing), and automated test campaigns through powerful APIs and drag-and-drop scenario creation.

Technical Specifications

• Frequency range: 100 kHz to 2700 MHz


• Frequency resolution: 0.1 Hz


• Frequency uncertainty: ± (timebase accuracy + frequency resolution)


• Frequency settling time: <400 µs for changes <1 kHz


• Output level repeatability (1 h warm-up): <0.01 dB (≥–80 dBm), <0.1 dB (<–80 dBm) RF Receiver / Spectrum Analyzer


• Frequency range: 10 MHz to 2700 MHz


• Level accuracy: <1.7 dB (level ≥–106 dBm)


• Input protection: SC 13 dBm MAX; RF 2, RF 1 2 W MAX; AUX 3, AUX 4 50 W MAX; AUX 1, AUX 2 13 dBm MAX Interfaces


• USB (dual rear/front), Ethernet (1×RJ-45), VGA monitor (15-pin D-Sub), RS-232-C serial (COM1/COM2), parallel printer (Centronics 25-pin), Control A/B (68-pin HD each), IF connectors (4×BNC), Clock reference (1×BNC)

Key Features

• Protocol analyzer and system simulator for 2G/3G standards


• Independent multi-channel and multi-cell configuration


• Integrated power meter functionality


• Scalable technology combinations within single system


• Test automation for unattended operation

Typical Applications

• Conformance and certification testing (GCF/PTCRB approved)


• Inter-RAT handover validation


• Application enabler testing and R&D protocol development

Compatibility & Integration Integrates with CRTU platform via Control connectors and IF ports. Modular design supports flexible scaling across GSM, WCDMA, and additional technologies.