The PM6690 is the state-of-the-art Frequency Counter/Timer/Analyzer that outperforms all existing counters on the market, offering unique ease-of-use with a graphical display and menu-driven control system.

Unbeaten speed and resolution
The PM6690 offers an unprecedented resolution and speed of 12 digits per second for frequency measurements, and 100 ps single-shot time resolution. Phase measurements come with a resolution up to 0.001º, speeded up by a 'single pass' technique not found in any other counter before. The instrument speed is also seen in the acquisition speed: up to 250 000 measurements per second are taken and stored in internal memory, or 2 000 measurement per second can be made over the bus. The internal memory can hold as many as 750 000 measurement results for further analysis.

Ease of use
The menu-driven instrument control structure reduces the risk of mistakes. The main measurement result is supported by auxiliary parameter readings, which put an end to the need for other instruments like a DMM or an oscilloscope. You can measure the phase relationship between input and output signal of a device, simultaneously reading the test frequency of the signal and the voltage ratio (in dB) between input and output signals. The graphical presentation of results, like histogram and trend curve, gives a much better understanding of random signal distribution and of system changes over time. Auto-trigger automatically sets optimum trigger level and hysteresis adapted to the actual signal applied.
 
Unique graphical presentation mode
The PM6690 uniquely offers a graphical display to present the measurement results in numerical (up to 14 digits) or graphical format. The display is also used to present the setup information as part of a convenient, menu-driven control system. The display gives the main measurement as well as auxiliary measurement results, so that commonly asked questions like “What is the attenuation and phase shift of this network?” are answered directly, in a single look at the display.
The results of statistical analysis can be presented as numerical data, as a trend graph, or as a histogram, giving an insight in the behavior of the device under test without the help of external processing – quickly and easily.

Excellent computer connectivity
The PM6690 is equipped with both a GPIB/IEEE-488 and a USB-interface for high-speed communications with your PC. The GPIB-interface allows an easy integration in larger test systems. Alternatively, thanks to the USB interface, no dedicated GPIB-controller and plug-in card are needed to get fast communications with the PC in small test setups. The optional TimeView-90W PC software package allows for instrument remote control, and the analysis and display of measurement results in a choice of graphs.

Comtest (Pty) Limited is the sole authorised distributor of Fluke Industrial and Electrical test tools in southern Africa. Fluke is the world leader in the manufacture, distribution and service of electrical and industrial test tools solutions.