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Keysight (Agilent) 85644A 6.5GHz Tracking Source

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The Keysight 85644A is available to buy refurbished used or rent, usually from our UK stock.


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£115 (4 Week Rate)

Rate varies with config & rental period. Please contact us for the best rental rate

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Keysight (Agilent) 85644A 6.5GHz Tracking Source Description:

The HP 85644A and HP 85645A tracking sources complement and expand the measurement capability and versatility of your HP spectrum analyzer. They are designed primarily as general purpose accessories for spectrum analyzers.

A tracking source combined with a host spectrum analyzer allows you to measure the swept amplitude response of a device, such as an amplifier or a filter. These measurements have the advantage of high dynamic range and speed. In addition, since the spectrum analyzer is a tuned receiver, measurements are not affected by spurious signals or harmonics.

The HP 85644A tracking source is ac coupled. The frequency range is from 300 kHz to 6.5 GHz with selectable RF output power.

The HP 85645A tracking source allows you to choose ac or dc coupling. The frequency range is from 300 kHz to 26.5 GHz with selectable RF output power.

The tracking sources can easily be congured to track the input frequency of a variety of spectrum analyzers or the output frequency of a microwave sweep oscillator. A conguration menu, accessible at the press of a front-panel key or via HP-IB, allows you to choose from among the following compatible host instruments:

- HP 8560 Series portable spectrum analyzers.

- HP 8566A/B spectrum analyzers.

- HP 8590 Series portable spectrum analyzers.

- HP 8340A/B synthesized sweepers.

- HP 8350 Series sweep oscillators .

The tracking sources have offset tracking capability. Offset tracking makes possible the amplitude response measurements of many frequency translation devices (such as mixers), and of systems with delays (such as satellite links). The advantage of the host spectrum analyzer (a tuned receiver) minimizes the effects of other mixing products.

With two tracking sources set to appropriate offset frequencies, swept TOI (third-order-intercept) measurements are possible over a continuous range of frequencies. The time required for the swept TOI measurement is minimal.

The tracking source also offers power sweep capability. Power sweep is useful for characterizing saturation effects of devices under test.

The tracking sources can generate stand-alone, CW signals at fixed, non-synthesized, frequencies of your choosing. No connections to a host instrument are required. The CW signal from the tracking source can be used, along with a host spectrum analyzer, for measuring harmonics generated by a device such as an amplifier.

The tracking source combined with a transducer can make swept measurements of circuit immunity to electromagnetic interference.

We offer the refurbished used Keysight (Agilent) 85644A 6.5GHz Tracking Source for sale and rental.

The Keysight 85644A is fully tested and refurbished in our in-house ISO9001 calibration laboratory. We supply manuals, accessories, full warranty and a free-of-charge Certificate of Conformity. We can also provide the Keysight 85644A with a fresh calibration for a small additional charge.

If you have under-utilised test equipment talk to us about trading-in or part-exchanging it towards the Keysight 85644A or other refurbished test equipment.

Last Updated: 10-Jul-2018