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The ASG miniature signal generator combines exceptional RF performance and versatility of digital interface in a highly compact package – just 21 × 72 × 100 mm and weighing less than 300 g. In addition to the ultra-wide frequency range of 25 to 6000 MHz, tunable in 1 Hz steps, the spearhead of RF performance of these ASG modules is in the spectral purity of their output signal. Phase noise at an output frequency of 1 GHz is better than -106 dBc/Hz at an offset of 100 kHz from the carrier. Spurious are typically lower than -70 dBc and harmonics less than -25 dBc.

The versatile ASG digital interface provides control options which include direct USB with convenient and clearly functional GUI plus input power derivation. Each unit also has the capability of being driven by RS232. Additionally, for both the 6 GHz version and its 3 GHz sibling there is an option of Ethernet control, thereby allowing totally remote and unattended operation in the field, with all of the logistical and cost advantages that provides.

Frequency stability is determined by an internal TCXO with ±1 ppm maximum variation over the -20° to +50°C operating temperature range but the miniature signal generator can also be connected to an external reference of between 10 and 50 MHz where system stability tracking is required.

The miniature signal generator is able to generate swept frequency signals and step through a range of frequencies. There are two sweep modes, dwell and duration. Dwell allows the user to set the dwell time at each step, while duration provides a user defined total sweep time. Both modes allow the user to define the start and stop frequencies and the sweep can go from high to low by setting the stop at a lower frequency.

The unit works with Windows XP, Windows 7 and Windows 8, and software upgrades are supplied free of charge. In addition, the ASG has a non-volatile memory that retains all settings. It can have the USB removed and power cycled recalling its last known state.

The clean output signal combined with power levels to +13 dBm, controllable on 0.1 dB steps; make the series suitable for use in most RF theatres of application including test and measurement, communications systems, covert interception and countermeasures.

Braintree, Essex, UK