Time Marker Specifications - Fluke 5820A Operator's Manual

5820A
Operators Manual
8-7.

Time Marker Specifications

Time Marker into
50 Ω
Wave Shape
Typical Output
Level
Typical Jitter (p-p)
Sequence
Period Resolution
1-Year Absolute
Uncertainty, tcal ±
5 °C [3]
[1] Typical rise time of square wave and 20%-pulse (20% duty cycle positive pulse) is < 1.5 ns.
[2] With 10 MHz external reference selected, the uncertainty becomes that of the external clock plus 5
µHz (as an example of determining the uncertainty, if the internal clock was used for a 5 s Time Marker
period, the ppm uncertainty would be = 2.5 ppm + [5 µ Hz * 5s * 1E
[3] Time marker uncertainty is +/-50 ppm when measured off of cardinal points.
8-6
Table 8-3. Time Marker Specifications
20 ms
5 s to
to 100 ns
50 ms (max)
spike or spike,
square square, or
20%-pulse
> 1V pk > 1V pk [1]
<10 ppm < 1 ppm
5-2-1 from 5 s to 2 ns (e.g., 500 ms, 200 ms, 100 ms)
± (2.5 ppm
+ 5µ Hz)
[2] ± 0.33 ppm
50 ns
to
20 ns 10 ns
spike or square
square or sine
> 1V pk [1] > 1V pk
[1]
< 1 ppm <1 ppm
4 digits
±0.33
± 0.33 ppm ppm
6 ] = 27.5 ppm ~ 0.1375 ms).
5 ns 2 ns
to to
2 ns 500 ps
sine sine
> 1V p-p > 1V p-p
<1 ppm <1 ppm
±0.33
± 0.33
ppm
ppm