7.11 % Duty Cycle Function Specifications - Fluke 9100 User Handbook Manual

Final Width = 215mm

7.11 % Duty Cycle Function Specifications

7.11.1 Introduction
Duty Cycle is a derived (relative) quantity which describes the Pulse Width / Repetition Period ratio of a pulsed waveform. In the
9100, it is expressed as a percentage. The values of Pulse Width and Repetition Period will change with frequency, while
maintaining the same percentage ratio.
Hardware limitations drive the % Duty Cycle to a limit only when the Pulse Width and Repetition Period intervals reach their
individual limits at particular frequencies. This means that any accuracy specification must be expressed in terms of constituent
time intervals.
7.11.2 '% Duty' Value: Screen Setting Limits
7.11.3 Repetition Period Interval Accuracy
Output Interval
Voltage
Vo 6Vpk 100 s to 2000ms
6Vpk < Vo 30Vpk 1ms to 2000ms
7.11.4 Duty Cycle Accuracy
Output Voltage Total Accuracy
1Year — Tcal 5 C
Vo 6Vpk 50ns
6Vpk < Vo 30Vpk ‡ 250ns
‡ = Minimum Mark or Space interval: 10 s.
7.11.5 High and Low Voltage Limits and Voltage Accuracy
Output Accuracy
Voltage Vo ( Volts)
1Year — Tcal 5 C
Vo 6Vpk 0.06V †
6Vpk < Vo 30Vpk 0.3V
† = After first 150ns.
NOTES: [1] Tcal = temperature at calibration. Factory calibration temperature = 23 C.
7-18 Section 7: Model 9100: Specifications
00.05% % Duty 99.95%
Accuracy Option 100 Accuracy
(ppm of Output) (ppm of Output)
1Year — Tcal 5 C [1] 5Year — Tcal 5 C
25 0.25
25 0.25
[1]
High Level
Low Level
Fig. 7.11.1 % Duty Cycle Function —
[1]
Generalized Output Waveshape Definition
[1]
Pulse Width
('Mark')
'Space'
Repetition Period
Repetition Rate = 1/Repetition Period
Pulse Width
% Duty Cycle = x 100 %
Repetition Period