Additional
Low
Frequency Errors
Error is stated
as
% of reading.
Frequency
3HZ
(slow)
AC
Filter
20HZ
(medium)
200HZ (fast)
10 - 20 Hz
0
0.25
-
20-
40
Hz
0
0.02
-
40
- 100
Hz
0
0.01
0.55
100 - 200 Hz
0
0
0.2
200
Hz
-1
kHz
0
0
0.02
> 1 kHz
0
0
0
Frequency
Gate Times .......
..
....................................
..
Programmable
to
1
s.
100 ms. and 10 ms
Measurement Method ..................................
..
....... Flexible counting technique. AC-coupled input using the ac voltage
measurement function.
Settling Considerations ..... ............. ....................... When measuring frequency or period after a dc offset voltage change.
errors may occur. For the most accurate measurement. wait
up
to
1 second for the input blocking capacitor to settle.
Measurement Considerations ................................
To
minimize measurement errors. shield inputs from external noise
when measuring low-voltage. low-frequency signals.
404014050
Accuracy
•
Accuracy
is
given as ± % measurement
Range
Frequency
24
Hour
(23
±1
·C)
90 Days
(23 ±5
·C)
1 Year
(23
±5
·C)
Temperature
Coefficientl
·C
Outside
18
to
28·C
100 mV to 3
-5
Hz
0.1 0.1
0.1
0.005
10001}'112J
5 - 10 Hz 0.05 0.05
0.05
0.005
10-40Hz
0.03 0.03
0.03 0.001
40 Hz - 300 kHz 0.006
0.01
0.01
0.001
300 kHz - 1 MHz 0.006
0.01
0.01
0.001
[1)
Input >100 mV. For 10 - 100
mV.
multiply percent measurement error
by
10.
[2)
Limited
to
8 X
10'
volt-Hertz
Gate Time vs. Resolution
Gate Time
Resolution
0.01
5Y>
0.1
6Y2
1.0
6Y2
Additional Low Frequency Errors
Error stated
as
percent of measurement for inputs >100 mV. For 10
-100
mV. multiply percent by
10.
Resolution
Frequency
5'1,
6%
4%
0.12 0.12
3 - 5 Hz 0
0 0.17 0.17
5 -
10
Hz
0
10 -
40
Hz 0.2 0.2
0.21
0.06
40
- 100 Hz 0
100 - 300
Hz
0.03 0.21
0
300 Hz
-1
kHz
0
0.01
om
> 1 kHz 0 0 0.02
..
.
29
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