Fluke 5820A, Руководство оператора

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5820A
Operators Manual
8-6
8-7. Time Marker Specifications
Table 8-3. Time Marker Specifications
Time Marker into
50 Ω
5 s
to
50 ms
20 ms
to
100 ns
(max)
50 ns
to
20 ns
10 ns
5 ns
to
2 ns
2 ns
to
500 ps
Wave Shape spike or
square
spike,
square, or
20%-pulse
spike or
square
square
or sine sine sine
Typical Output
Level > 1V pk > 1V pk [1] > 1V pk [1] > 1V pk
[1]
> 1V p-p > 1V p-p
Typical Jitter (p-p) <10 ppm < 1 ppm < 1 ppm <1 ppm <1 ppm <1 ppm
Sequence 5-2-1 from 5 s to 2 ns (e.g., 500 ms, 200 ms, 100 ms)
Period Resolution 4 digits
1-Year Absolute
Uncertainty, tcal
±
5
°
C [3]
± (2.5 ppm
+ 5µ Hz)
[2]
± 0.33 ppm ± 0.33 ppm
±0.33
ppm
±0.33
ppm
± 0.33
ppm
[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
6 ] = 27.5 ppm ~ 0.1375 ms).
[3] Time marker uncertainty is +/-50 ppm when measured off of cardinal points.