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

Manual Supplement

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
0.01 to 119.99 Hz
120.0 to 1199.9 Hz
1.200 to 11.999 kHz
12.00 to 119.99 kHz
120.0 to 1199.9 kHz
1.200 to 2.000 MHz
With REF CLK set to ext, the frequency uncertainty of the 5520A is the uncertainty of the external 10 MHz clock ±5 μHz. The
[1]
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
[1]
NORMAL Terminals
Frequency
10 to 45 Hz 33 mV to 32.9999 V
45 to 65 Hz
65 to 500 Hz
500 Hz to 5 kHz 330 mV to 1000 V
5 to 10 kHz
10 to 30 kHz
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
AUX (50th Harmonic) Output:
100 mV, 5 kHz ................................................ From "AC Voltage (Sine Wave) 90 Day Specifications" the auxiliary output specification for
7/11
Resolution
0.01 Hz
0.1 Hz
1.0 Hz
10 Hz
100 Hz
1 kHz
Voltages
3.3 mA to 2.99999 A
33 mV to 1000 V 3.3 mA to 20.5 A
33 mV to 1000 V 33 mA to 20.5 A
33 mA to 20.5 A
3.3 to 1000 V
3.3 to 1000 V
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).
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).
1-Year Absolute Uncertainty,
tcal ±5 °C
2.5 ppm ±5 μHz
Voltages
Currents
AUX Terminals
10 mV to 5 V
10 mV to 5 V
100 mV to 5 V
100 mV to 5 V
33 to
100 mV to 5 V
329.9999 mA
33 to 100 mV to
329.9999 mA 3.29999 V
17
5520A Operator
Jitter
[1]
100 nS
Amplitude
Uncertainty
Same % of output
as the equivalent
single output, but
twice the floor
adder.