Fluke PM-3370B, PM-3380B, PM-3390B, PM-3394B, PM-3384B user manual Limitations

4 - 72 COMMAND REFERENCE

Limitations:

The oscilloscope is only able to calculate rise and fall time characteristics, if the <low_reference> and <high_reference> parameters are limited to 1/8 division from their maximum and minimum. The limit of 0.125 divisions (noise level) depends on the vertical sensitivity of the top-to-top value (PTPeak) of the actual signal and is calculated as follows:

		<low>	<high>
- If PTPeak < 1 div., limit = 0.125 x 100% =		12.5%	87.5%
- If PTPeak < 2 div., limit = (0,125 /	2) x 100% =	6.25%	93.75%
- If PTPeak < 3 div., limit = (0,125 /	3) x 100% =	4.16%	95.84%
- If PTPeak < 4 div., limit = (0,125 /	4) x 100% =	3.125%	96.87%
- If PTPeak < 5 div., limit = (0,125 /	5) x 100% =	2.5%	97.5%
- If PTPeak < 6 div., limit = (0,125 /	6) x 100% =	2.08%	97.92%
- If PTPeak < 7 div., limit = (0,125 /	7) x 100% =	1.78%	98.22%
- If PTPeak < 8 div., limit = (0,125 /	8) x 100% =	1.56%	98.44%
- If PTPeak < 9 div., limit = (0,125 /	9) x 100% =	1.38%	98.62%
- If PTPeak < 10 div., limit = (0,125 / 10) x 100% =		1.25%	98.75%
For frequency, delay, period, and	dutycycle calculations these limits are also
applicable for the <middle_reference> parameter.

Notes:

(1)For reasons of compatibility with similar programs for other instruments, the syntax for the MEASure?, FETCh?, CONFigure, and READ? command allows the default node [:SCALar]. When used, this node must be placed after the leading node (MEASure, FETCh, CONFigure, or READ) but before the default [:VOLTage] node.

(2)Parenthesis around the <voltage_parameters> may be left out when no <measure_parameter> exists.

(3)A MEASure? query is always executed over the whole acquisition length of 512 samples (not cursor limited).