Trigger Signal Specifications (Time Marker Function); Time Marker Specifications - Fluke 5520A Manual

Manual Supplement
On page 8-18, replace steps 2 and 3, with the following:
2. Key in the voltage level that is recommended for your oscilloscope. For example to enter 30 mV,
press 30gV, then press E. See "Keying in a Value" earlier in this chapter.
3. Adjust the oscilloscope as necessary. The waveform should be similar to the one shown below, with
the gain at exactly the amount specified for the calibration settings for your oscilloscope. This
example shows the gain at 30 mV to be 6 divisions, at 5 mV per division.
On page 8-27, under TRIG, delete the 2nd paragraph.
On page 8-61, under Other Edge Characteristics, replace Frequency Range with the following:
Frequency Range
On page 8-62, under Frequency Characteristic, replace 1-Year Absolute Uncertainty, tcal ±5 °C
with the following:
1-Year Absolute Uncertainty, tcal ±5 °C
Under Distortion Characteristics, replace 2
footnote number 4, with the following:
2nd Harmonic
3rd and Higher Harmonics
[ With REF CLK set to ext, the frequency uncertainty of the Leveled Sine Wave is the uncertainty of the external 10 MHz clock ±0.3 Hz/gatetime.
4]
On page 8-63, replace the Time Maker Function Specifications, with the following:

Time Marker Specifications

Time Maker into 50 Ω
1-Year Absolute
Uncertainty at Cardinal
Points, tcal ±5 °C
Wave Shape
Typical Output Level
Typical Jitter (rms)
Sequence
Adjustment Range
Amplitude Resolution
[1] t is the time in seconds.
[2] Typical rise time of square wave and 20 %-pulse (20 % duty cycle pulse) is <1.5 ns.
Time marker uncertainty is ±50 ppm away from the cardinal points.
[3]
On page 8-64, replace the Trigger Signal Specification for the Time Maker Function and
Trigger Signal Specifications for the (Edge Function), with the following:

Trigger Signal Specifications (Time Marker Function)

Time Marker Period
2 to 9 ns
10 to 749 ns
750 ns to 34.9 ms
35 ms to 5 s
900 Hz to 1.1 MHz
5 s to 50 ms
±(25 + t *1000)
±2.5 ppm
[1]
ppm
spike, square,
spike or square
or 20 %-pulse
[2]
>1 V p-p >1 V p-p
<10 ppm <1 ppm
5-2-1 from 5 s to 2 ns (e.g., 500 ms, 200 ms, 100 ms)
[3]
At least ±10 % around each sequence value indicated above.
4 digits
Division Ratio
off/100
off/10/100
off/1/10/100
off/1
±(25 ppm of setting + 15 mHz)
[4]
±2.5 ppm ±2.5 ppm
nd rd
Harmonic, 3
≤ -33 dBc
≤ -38 dBc
20 ms to
50 to 20 ns
100 ns
±2.5 ppm
spike or square
[2] [2]
>1 V p-p
<1 ppm
Amplitude into 50 Ω (p-p)
≥1 V
≥1 V
≥1 V
≥1 V
24
5520A Operator
[4] [4]
±2.5 ppm
and Higher Harmonics and replace
10 ns 5 ns to 2 ns
±2.5 ppm ±2.5 ppm
square or sine sine
[2]
>1 V p-p >1 V p-p
<1 ppm <1 ppm
Typical Rise Time
≤2 ns
≤2 ns
≤2 ns
≤2 ns
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