Frequency translator

Aeroflex has launched the TX501 RF multiband translator, a full duplex 3G frequency translator.

It enables network equipment developers to test infrastructure operating in 3GPP frequency bands I to VI using existing 3G band I test mobiles.

The translator sits between the test mobile and node B base station providing direct RF connections to both units. No additional software is required to control the TX501. Frequency band selection is made either via the front panel rotary switch or using an electrical control interface.

Using the electrical interface, the device may be configured as part of an automated regression test system. The uplink and downlink local oscillator frequencies on the TX501 are controlled via external signal generators, such as Aeroflex's IFR 2023A, IFR 2023B or IFR 2025.

The node B base station, signal generators and test mobile unit can be locked to a common 10 MHz reference via the TX501.

The translator is designed to operate in conjunction with any band I mobile test device to provide 3G multiband frequency translation. It is suitable for use with Aeroflex's TM500 HSDPA (high-speed downlink packet access) test mobile unit to enable network testing with infrastructure operating in any of the 3GPP Release 6 frequency bands.

The TM500 HSDPA test mobile tests the evolving 3G mobile communications networks. It has the capabilities of an HSDPA WCDMA mobile terminal, with additional advanced test interfaces and features, a development tool for network infrastructure equipment providers.

It is claimed to provide a far greater degree of control and visibility than that provided by regular consumer mobiles or internally-built test harnesses.