Product Description:
Rohde & Schwarz CRTC02 Communications Test Sets
Features
CRTC02
Automatic Measurements and Logging Using Supplied Test Procedures
Built-in TTL Inputs/Outputs in the Transmit and Receive Path
Fast and Reliable Testing of Modules and Complete Mobile Stations
Automatic Test Routines
Simulate Base Station with Call Setup, Data Transfer and All Signaling Procedures Between CRTC02 and the Station-Under-Test
Log All Signaling Activities in OSI Layers 1, 2 and 3 for Protocol Analysis; Mnemonic Display of Message Content for Protocol Troubleshooting
Check Error-correction Facilities of the Mobile Station by Implanting Errors in the Data Stream
Transmitter Measurements:
Power Ramp and Phase Trajectory
Burst Delay
Frequency Error
Receiver Measurements:
Bit Error Rate in Real Time
Receiver Sensitivity
Speech Coder and Decoder Tests
Numerical and Graphical Output of Results
IEC/IEEE Bus Interface (Opt. 04)
Applications
Measurements on GMSK-modulated RF Signals and Receiver Testing
Testing for Compliance with GSM, DCS 1800 and PCS 1900 Recommendations
Simple Generation of Customized Test Procedures
Research and Development
Quality Assurance
CRTC02 Radiocommunications Test Set
The CRTC02 provides signal generation, signal measurement and user-friendly software. They are extremely powerful test sets, providing all simulation and analysis capabilities - from measurement of GSM/DCS 1800/PCS 1900-specific signals to detailed checking for hidden errors in signaling.
Signal Generation
The analog unit provides two independent RF generator channels. Using these two channels, the test set can simultaneously simulate and test a control channel (BCCH + FCCH + SCH + CCCH) and a traffic channel (TCH + SACCH). For measuring the receiver sensitivity, a fading simulator can be connected into each of the output circuits.
Transmission with or without frequency hopping is possible on all channels. The two channels are GMSK-modulated and are timed as bursts to occupy exactly one or all of the eight GSM/PCN time slots. The timing of the bursts can be adjusted and the amplitude can be varied dynamically over a 40 dB range.
Signal Measurement
A receive channel is allocated to each of the generator channels. It's offset by a duplex spacing of 45, 75 or 80 MHz relative to the generator channel, even under hopping conditions.
The digital signal is recovered by a precise GMSK demodulator. In addition, the signal in each of the receive channels is sampled. The phase and amplitude samples are stored and used for computing the signal parameters, such as burst delay, phase trajectory and power ramping.
User-friendly Software Saves
For development and quality control tasks, full flexibility is given by the possibility of varying procedures, signaling parameters and results display. For production testing, overview measurements and service tasks, complete test routines supplied with the equipment ensure reliable test results and ease of operation.
A menu-driven editor in conformance with coding rules 4.08 allows convenient entry of messages and system information simply by filling out tables.
A comfortable, window-oriented user interface simplifies the generation of test routines. Test programs are written in Borland Turbo C++. The use of this popular standard language eliminates the long training periods needed for special test languages and offers the user high flexibility.
The complete software, including message library, control programs and test results, is stored on a hard disk. The built-in floppy drive permits loading stored data and easy backup.
The digital unit may further be used as an IEC/IEEE controller, allowing extension of the test set by including external instruments. The test sets contain both the IEC/IEEE bus interface and the necessary software drivers.
Standard Measurements
The CRTC02 is supplied with an extensive test software package. These test programs are available in source code and can also be used as starter programs for generating user-specific progra
More Rohde & Schwarz savings
|
| Stock photo |