Fluke Corporation 8508A Extended Specifications
5
Type
Multi-slope, multi-cycle A-D Converter
CMRR
(1 k
Ω
unbalance)
[5]
140 dB at DC and 1 - 60 Hz
NMRR
[5]
Filter Out
60 dB at 50/60 Hz ±0.09 %
Filter In
110 dB at 50/60 Hz ±0.09 %
Protection
(All ranges)
1 kV rms
Input Impedance
200 mV to 20 V Ranges
>100 G
Ω
200 V & 1000 V Ranges
10.1 M
Ω
± 1 %
Max Input Current
50 pA
Ratio Accuracy
Range to Range
±(Net Front Input Ac Net Rear Input Accuracy)
Within Range
Apply 24 hour or 20 minute Transfer
Uncertainty specifications
Settling Time
(to 10 ppm step size)
Filter Out
<50 ms
Filter In
<1 s
DC Voltage
[1] [2] [3]
Full Scale
Uncertainty Relative to Cal Stds
24 hour
TCal ±1 °C
365 day
TCal ±1 °C
200 mV 199.999 999
0.7 + 0.5
1.4 + 0.5
2.7 + 0.5
4.5 + 0.5
5.0 + 0.5
2 V
1.999 999 99
0.5 + 0.2
1.4 + 0.2
2.7 + 0.2
3.0 + 0.2
3.5 + 0.2
20 V
19.999 999 9
0.5 + 0.2
1.4 + 0.2
2.7 + 0.2
3.0 + 0.2
3.5 + 0.2
200 V
199.999 999
1.0 + 0.2
2.6 + 0.2
4.0 + 0.2
4.5 + 0.2
5.5 + 0.2
1000 V
1050.000 00
1.0 + 0.5
2.6 + 0.5
4.0 + 0.5
4.5 + 0.5
5.5 + 0.5
200 mV 199.999 999
0.8 + 0.6
2.0 + 0.6
3.5 + 0.6
6.0 + 0.6
6.5 + 0.6
2 V
1.999 999 99
0.6+ 0.25
1.8 + 0.25
3.5 + 0.25
4.0 + 0.25
4.5 + 0.25
20 V
19.999 999 9
0.6 + 0.25
1.8 + 0.25
3.5 + 0.25
4.0 + 0.25
4.5 + 0.25
200 V
199.999 999
1.2 + 0.25
3.5 + 0.25
5.2 + 0.25
6.0 + 0.25
7.0 + 0.25
1000 V
1050.000 00
1.2 + 0.6
3.5 + 0.6
5.2 + 0.6
6.0 + 0.6
7.0 + 0.6
90 day
TCal ±1 °C
Range
365 day
TCal ±5 °C
95 % Confidence Level
99 % Confidence Level
DC Voltage
(Secondary Specifications)
[1] [2] [3]
Transfer
Uncertainty
20 mins ±1 °C
± (ppm Reading
+ ppm Range)
Temperature Coefficient
200 mV
0.4 + 0.3
0.4
0.6
2 V
0.12 + 0.1
0.3
0.5
20 V
0.12 + 0.1
0.3
0.5
200 V
0.4 + 0.1
0.7
1.0
1000 V
0.4 + 0.3
0.7
1.0
Range
± ppm Reading/°C
15
°C - 30 °C
5
°C - 15 °C
30
°C - 40 °C
DC Voltage specifications
365 day
TCal ±1 °C
±
(ppm R ppm Range)
[4]
Absolute Uncertainties
