Fluke 6105A - Load Regulation Specification Adder; Current Sine Amplitude Specifications

6100B/6105A
Users Manual
1-12
1-26.
Load Regulation Specification “adder”
The finite output impedance of the current amplifier causes a “load regulation” effect that must be taken into
consideration. Let V
F
= the peak voltage developed across the load due to current I
F
at frequency F. Let I
FR
be the
maximum current and V
max
the maximum compliance peak voltage for the range in use.
If V
F
/V
max
≤ I
F
/I
FR
no specification adder is required. Otherwise, the adder is calculated:
if V
F
/V
max
> I
F
/I
FR,
add:
A
V
VFI
FFR
μ
max
20 ×
××
Example: The output is a 800 Hz, 0.5 A rms sine wave on the 5 A range. The 6100B current specification from
“Current Sine Amplitude Specifications” is:
139 ppm + 120 μA = 70 μA + 120 μA
The voltage across the output is 6 V peak and maximum compliance is 14 V, for example, V
F
/V
max
> I
F
/I
FR
. The
“adder” is:
A μ 85
1420
68005
=
×
××
The current specification becomes:
70 μA + 120 μA + 85 μA = 275 μA
1-27. Current Sine Amplitude Specifications
Range
(Amps)
Frequency
Current
(Amps)
[4]
6105A & 6106A
1-Year Accuracy,
tcal
[3]
±5 °C ±(ppm of
output + μA)
6100B & 6101B
1-Year Accuracy,
tcal
[3]
±5 °C ±(ppm of
output + μA)
Open Loop
24-Hour Stability
±(ppm of output
+ μA)
[1][2]
0.1 A - 0.25 A 46 2.5 139 6 75 3
45 Hz - 65 Hz
0.25 A 46 1.5 130 6 75 3
0.01 A - 0.1 A 60 5 139 6 75 3
0.25 A
16 Hz - 850 Hz
0.1 A - 0.25 A 60 5 139 6 75 3
0.2 A - 0.5 A 46 5 139 12 75 5
45 Hz - 65 Hz
0.5 A 46 3 130 12 75 5
0.05 A - 0.2 A 61 10 139 12 75 5
0.5 A
16 Hz - 850 Hz
0.2 A - 0.5 A 61 10 139 12 75 5
0.4 A - 1.0 A 47 10 139 24 75 10
45 Hz - 65 Hz
1 A 47 6 130 24 75 10
0.1 A - 0.4 A 61 20 139 24 75 10
1 A
16 Hz - 850 Hz
0.4 A - 1 A 61 20 139 24 75 10
0.8 - 2 A 46 20 139 48 75 20
45 Hz - 65 Hz
2 A 46 12 130 48 75 20
0.2 A - 0.8 A 61 40 139 48 75 20
2 A
16 Hz - 850 Hz
0.8 A - 2 A 61 40 139 48 75 20
2 - 5 A 49 50 139 120 75 50
45 Hz - 65 Hz
5 A 49 30 130 120 75 50
0.5 A - 2 A 64 100 139 120 75 50
5 A
16 Hz - 850 Hz
2 A - 5 A 64 100 139 120 75 50
[1] For ±1 °C and constant load and connection conditions.
[2] When Flicker, Fluctuating harmonics, Dip/Swell or Interharmonics are applied, “Open loop” stability specification must be added to
the 1-year accuracy specification as described in “Open and Closed Loop Operation”.
[3] tcal = temperature of last calibration.
[4] Output levels less than the range minimum can be set but are not specified.
[5] Settling time (TS) of 21 A, 50 A, and 80 A ranges depends on rms output as a proportion of full range and can be calculated from:
TS = %FR2 x 180 seconds. Settling magnitude will not exceed 50 ppm at FR.