The Rohde & Schwarz CTS55 is a compact, modular radiocommunication analyzer engineered for GSM900/1800/1900 mobile phone testing. It functions as a base station simulator, enabling functional validation through to component-level fault diagnosis. The instrument combines automatic, user-configurable test routines with manual measurement capabilities for precise signal analysis and troubleshooting across all service levels.
Technical Specifications
Core Architecture
• Instrument Type: Digital Radio Tester / Radiocommunication Analyzer
• Target Standards: GSM, DCS1800, PCS1900
• Display: TFT color display with high resolution, brightness, and wide viewing angle
• User Interface: Menu-guided softkey operation; external PC keyboard compatible
• Multilingual Support: Six language menus
• Form Factor: Compact and modular design
GSM Measurement & Test Functions
• Base Station Simulation: Full GSM base station emulation
• Synchronization: Mobile phone lock and synchronization with simulated base station
• Call Management: Incoming/outgoing call setup and cleardown testing
• Transmitter Measurements: Power control and measurement
• Handover Testing: Channel change (handover) verification
• Sensitivity Analysis: Bit Error Rate (BER), Residual Bit Error Rate (RBER), Received Signal Level (RxLev), Received Quality (RxQual)
• Modulation Characterization: Phase error, frequency error, power ramp versus time, timing error
• Voice & Audio: Echo test (loudspeaker and microphone)
• Keypad & Display: Function verification with dialled number display
• Identity Verification: IMSI and IMEI readout
• SMS Testing: Send and receive functionality validation
• BER Search Routine: Sensitivity determination via signal level reduction
RF Signal Generation
• GSM Signal Types: GMSK, dummy burst modulation with selectable midamble (training sequence), unmodulated
• Signal Applications: AFC and RSSI adjustments
– Key Features
• User-configurable automatic test routines for manufacturer-specific requirements
• Dual-mode operation: automatic sequences and in-depth manual measurements
• Real-time signal analysis for efficient fault localization
– Typical Applications
• Mobile phone functional testing and validation
• Service-level diagnostics from initial acceptance through repair verification
• GSM transceiver performance characterization
• Handset quality assurance and field testing
– Compatibility & Integration
Supports external PC keyboard operation for extended testing protocols.
