Fluke PM6681R, PM6685R manual ACQuisition RESolution, Resolution, Command Reference

:ACQuisition :RESolution

￿«HIGHLOW»

Resolution

Selects basic measurement mode for all time-related measurements.

Parameters:

HIGH: The resolution is the full 0.25 ns

PM6680B

LOW: The resolution is limited to a 100-ns clock. You can use this to increase the bus speed. Saves about 0.6 to 0.9 ms if the counter does real-time calculations, otherwise, only 0.05 ms.

Returned format:

HIGHLOW￿

*RST condition:

HIGH

:ACQuisition :RESolution

￿«HIGHLOW»

Resolution

PM6681

Turns off interpolator usage and also ignores the high resolution part of the count registers. Low Resolution functions only for Frequency, Period, Time-Interval and Pulse Width

Parameters:

HIGH: The resolution is the full 50 ps

LOW: The resolution is limited to 125 ns.

At low resolution no special arming and trig options are supported. There is no handling of Abort messages from the bus after the measurement series has been started. That means you cannot break off a low-resolution measurement series.

The results are based primarily on the timestamp values with 125-ns resolution. Single mode is forced on, and every period of a signal is measured. This mode is limited in frequency to <40 kHz for Frequency and Period, and <20 kHz for Time- Interval and Pulse Width. At 40 kHz the resolution is 1/400, or 2.6 digits.

Returned format:

HIGHLOW￿

*RST condition: HIGH

9-90 Command Reference