Rohde & Schwarz CMD57 Tester Digitale Radiocomunicazioni stazioni base (BTS) 2

The Digital Radiocommunication Tester is an advanced top-class instrument for measurements on base stations (BTS) and BTS modules. 
The LCD display with softkeys on both sides allows menu-guided convenient callup of test routines.
These testers combine compact size with high measurement accuracy and speed. They are suitable both for stationary and mobile use and feature great ease of operation and high reliability. Operation is extremely easy and requires no detailed GSM knowledge. 
CMD allows measurements on transmitters and receivers of base stations without affecting telephone calls in progress.

R&S CMD57 digital radiocommunication tester is an advanced top-class instrument for measurements on base stations (BTS) and BTS modules. 

R&S CMD allows measurements on transmitters and receivers of base stations without affecting telephone calls in progress.

These testers combine compact size with high measurement accuracy and speed. They are suitable both for stationary and mobile use and feature great ease of operation and high reliability. Operation is extremely easy and requires no detailed GSM knowledge. The LCD display with softkeys on both sides allows menu-guided convenient callup of test routines.

Transmitter measurements

·          Dynamic range >72 dB: Checking the power ramps and output spectrum of the BTS transmitter for compliance with the dynamic range specified by GSM

·          Measurement of power ramps: Checking the switching characteristics of the BTS transmitter

·          Phase and frequency error: Testing the modulation characteristics of the BTS transmitter including statistical function

·          Measurement of spectrum due to modulation or switching: Detecting interference to the BTS transmitter at adjacent frequencies, due to modulation or switching

Receiver measurements

·          Measurement of bit error rate (BER) via Abis/IEEE bus/RS-232-C interface, BTS loopback, CMD loopback, Abis interface: Testing the BTS receiver characteristics by adaptation to specific implementation in the BTS

·          Measurement of adjacent timeslot rejection with up to 50 dB higher level: Measuring the automatic gain control (AGC) of the BTS with high level difference between used and adjacent timeslot; simulation of different BTS receive levels

Other measurements

·          Echo test: Subjective test of speech quality with call established

·          Module test: Complete transmitter measurements even without signaling or time synchronization

·          Multifunction RF generator: Ideal for alignment of receiver modules

·          DC current and voltage measurement: Optimized for pulsed signals; replaces external measuring instruments

·          AF measurement facilities and 60 MHz frequency counter (optional): Replaces external frequency counter; ideal for measuring reference frequencies

·          RF monitor with bandwidths of 30 kHz, 100 kHz: Replaces external spectrum analyzer

·          Simulation of fading effects: On request