TETRA test set

20 Jun 2007

The Aeroflex 3901 is a TETRA test set, the first model based on the new 3900 series digital PMR platform. This radio test platform incorporates a RF receiver, signal generator, DSP subsystems and integrated instrument applications software. Direct input of signal power up to 125W is supported, providing compatibility with almost all practical mobile and infrastructure test requirements.

A low power input is also provided for more sensitive measurements such as off-air analysis. Transmitter tests to ETSI EN 300 394-1 are supported, including burst power, power profile, modulation accuracy, residual carrier, frequency error and timing error. Power profile testing incorporates a full 70dB burst dynamic range and pass/fail assessed against a TETRA or user-defined mask, and can be averaged over up to 250 bursts. Modulation accuracy can be examined using manual inspection of phase and amplitude on phase trajectory and constellation

diagrams, and also quantified by a numerical error vector measurement (EVM).

In receiver testing, the 3901 uses TT loopback for automatic BER, RBER and MER tests. T1 loopback BER measurement is supported for manual testing of radios in special test modes. Extensive I/O and storage facilities are supplied as standard, including GPIB, USB, RS232, and IP-addressable Ethernet connections.

The Ethernet connection allows remote firmware upgrade and instrument option enable, as well as remote login for technical support. Triggering and synchronization interfaces are provided for measurement along with configurable single and dual-port duplex RF input/output configuration and analogue/modulation input/output. Printers and other peripherals can readily be connected, and the platform incorporates an integral 20GB hard disk.

For more information, please visit Roots Communications Pte Ltd at booth 6C1-05, Hall 6, or or http://www.rootscomm.com/.

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