Fluke 5520A - Additional Specifications; Frequency Specifications; Harmonics (2 Nd to 50 Th) Specifications

Manual Supplement 5520A Operator
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Additional Specifications
The following paragraphs provide additional specifications for the 5520A Calibrator ac voltage and ac current functions. These specifications
are valid after allowing a warm-up period of 30 minutes, or twice the time the 5520A has been turned off. All extended range specifications are
based on performing the internal zero-cal function at weekly intervals, or when the ambient temperature changes by more than 5 °C.
Frequency Specifications
Frequency Range Resolution
1-Year Absolute Uncertainty,
tcal ±5 °C
Jitter
0.01 to 119.99 Hz 0.01 Hz
2.5 ppm ±5 μHz
[1]
100 nS
120.0 to 1199.9 Hz 0.1 Hz
1.200 to 11.999 kHz 1.0 Hz
12.00 to 119.99 kHz 10 Hz
120.0 to 1199.9 kHz 100 Hz
1.200 to 2.000 MHz 1 kHz
[1] With REF CLK set to ext, the frequency uncertainty of the 5520A is the uncertainty of the external 10 MHz clock ±5 μHz. The
amplitude of the 10 MHz external reference clock signal should be between 1 V and 5 V p-p.
Harmonics (2nd to 50th) Specifications
Fundamental
Frequency
[1]
Voltages
NORMAL Terminals
Currents
Voltages
AUX Terminals
Amplitude
Uncertainty
10 to 45 Hz 33 mV to 32.9999 V 3.3 mA to 2.99999 A 10 mV to 5 V
Same % of output
as the equivalent
single output, but
twice the floor
adder.
45 to 65 Hz 33 mV to 1000 V 3.3 mA to 20.5 A 10 mV to 5 V
65 to 500 Hz 33 mV to 1000 V 33 mA to 20.5 A 100 mV to 5 V
500 Hz to 5 kHz 330 mV to 1000 V 33 mA to 20.5 A 100 mV to 5 V
5 to 10 kHz 3.3 to 1000 V
33 to
329.9999 mA
100 mV to 5 V
10 to 30 kHz 3.3 to 1000 V
33 to
329.9999 mA
100 mV to
3.29999 V
Phase uncertainty for harmonic outputs is 1 degree or the phase uncertainty shown in “Phase Specifications” for the particular output,
whichever is greater. For example, the phase uncertainty of a 400 Hz fundamental output and 10 kHz harmonic output is 5 ° (from
“Phase Specifications”). Another example, the phase uncertainty of a 50 Hz fundamental output and a 400 Hz harmonic output is
1 degree.
[1] The maximum frequency of the harmonic output is 30 kHz (10 kHz for 3.3 to 5 V on the Aux terminals). For example, if the
fundamental output is 5 kHz, the maximum selection is the 6th harmonic (30 kHz). All harmonic frequencies (2nd to 50th) are
available for fundamental outputs between 10 Hz and 600 Hz (200 Hz for 3.3 to 5 V on the Aux terminals).
Example of determining Amplitude Uncertainty in a Dual Output Harmonic Mode
What are the amplitude uncertainties for the following dual outputs?
NORMAL (Fundamental) Output:
100V, 100 Hz .................................................. From “AC Voltage (Sine Wave) 90 Day Specifications” the single output specification for
100V, 100 Hz, is 0.015 % + 2 mV. For the dual output in this example, the specification is
0.015 % + 4 mV as the 0.015 % is the same, and the floor is twice the value (2 x 2 mV).
AUX (50th Harmonic) Output:
100 mV, 5 kHz ................................................ From “AC Voltage (Sine Wave) 90 Day Specifications” the auxiliary output specification for
100 mV, 5 kHz, is 0.15 % + 450 mV. For the dual output in this example, the specification is
0.15 % + 900 mV as the 0.15 % is the same, and the floor is twice the value (2 x 450 mV).