WE WILL RE-CHECK ALL THE THERMAL CONVERTERS TO MAKE SURE THEY WORK. PLEASE, GIVE ME TWO (2) EXTRA DAYS FOR THIS ACTION.

Eight model A55 High Frequency Thermal converters are use with the Fluke 540B and other equipment to extend the frequency response to 50 MHz. The design of the A55 series is comparable to that of standards maintained by the National Burreau of Standards. These are great for a NIST Lab or for calibrating your in house equipment.

THIS IS THE COMPLETE SET OF FLUKE A55 THERMAL CONVERTERS. 0.5V, 2V, 3V, 5V, 10V, 20V, 30V, and 50V.

AC/DC Differance: *** Range: 0.25 to 5 V, Uncertainty: 0.05% *** 1 MHz to 100 MHz. *** Range: 0 to 100 mADC, Uncertainty: 0.015% of output. *** Range: 1 to 100 MHz, 10 to 20 dBm, Uncertainty: Frequency +/-0.1%; *** Flatness: +1.0 to -2.0 dBm; *** Distortion: <-25 dB *** Accuracy: + or - 0.10% @ 1 MHz + or - 0.16% @ 10 MHz + or - 0.27% @ 20 MHz + or - 0.27% @ 30 MHz + or - 0.38% @ 40 MHz + or - 0.50% @ 50 MHz + or - 0.62% @ 60 MHz + or - 0.72% @ 70 MHz + or - 0.82% @ 80 MHz + or - 0.91% @ 90 MHz + or - 1.15% @100 MHZ *** Test method: direct comparison against multiple Standards using the null-balance technique.

For more information and Specs: http://measure.feld.cvut.cz/groups/metrology/vybaveni/obr/Fluke%20540B%20and%20A55%20calibrators.pdf

The units in the set are in great cosmetic condition. It may have a small scratch here or there. All buttons, knobs, and switches are good and intact. The serial # is 2478, 2756, 2699, 2618, 3375054, 2596, 2497, and 2657. We always re-check the item before we ship it. This makes sure the item is working when it left my shop.