Rohde & Schwarz CMD57
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Rohde & Schwarz CMD57 Communications Test Sets


Features Complete Range of Transmitter and Receiver Measurements Large Illuminated LCD Display for Fast Reading of Parameters and Measured Values Menu-guided User Interface for Quick Tests as Well as for In-depth Analysis Softkey Control with Display of All the Important Parameters Enabling Operator to Work Error-free Extremely Short Setting and Measuring for Both Manual and Remote Control via IEEE Bus Abis Control Options Available In-service Testing Option Applications GSM 900, DCS 1800, and PCS 1900 Base Station Measurements Manufacturing, Installation, and Maintenance CMD 57 Digital Radiocommunication Tester The CMD 57 Digital Radiocommunication Tester is a compact unit for testing GSM, DCS 1800 and PCS 1900 base stations (BTS) and BTS modules. It allows measurements on base station transmitters and receivers without affecting calls in progress. With the in-service test option, measurements can be made without taking a cell site out of service. Detailed Knowledge Not Required The CMD 57 is easy to use and is equally at home in production, installation and service environments. Ease of use goes beyond the front panel. All parameters can be individually modified in the configuration menu to allow easy adaptation to stringent user-specific tolerances. Any parameters that have modified with respect to the default standard specifications are clearly shown on the display. Additional attenuators, cables, and amplifiers are often required for connecting to the BTS. The effect of these additions are taken into account by the CMD 57 when calculating the measurement results. Test Your Transmitter The following GSM/DCS/PCS specific measurements are available for transmitter testing: Mean RF carrier power Power ramping Phase/frequency error Spectrum due to modulation Spectrum due to switching Measurements results on the transmitter's traffic channel (TCH) are obtained by simply switching to the corresponding menu. The results are graphically displayed along with applicable statistical functions. ... and Receivers Too You can also make the required tests on receivers. Bit error rate (BER) Adjacent time slot rejection Plus Many Other Measurements You can also make may other base station measurements with the CMD 57 including: Echo test Module tests without signaling or time synchronization Alignment using built-in multifunction RF generator AF measurements with optional frequency counter

 




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