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Reviews (11)
Apr 30, 2020
Great Frequency Counter with Limitations.
This is a very capable frequency counter with a couple limitations:.
It is not a reciprocal counter, so the resolution in the audio range and below is limited by the gate time. For low frequency measurements, the DC509 reciprocal counter may be a better option.
It is not high precision due to the limitations of its internal time base. Accuracy better than 1ppm requires the option 01 OCXO, which provides 0.01ppm stability. An external frequency standard can be readily connected by using ratio A/B mode.
Within these limitations, this is a very nice instrument.
Jun 03, 2020
See Below the Noise
This is an excellent high-gain (1X to 100.000X) external scope preamp. The adjustable LPF and HPF functions allow you to see small low-frequency signals hidden under large amounts of wideband noise.and AC line hum.
Jan 22, 2020
Great accessory for 7000 series scopes
Provides accurate on-screen frequency readout for 7000-series analog scopes.