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Specifications - A
63
Operation Below 45 Hz
The following operating characteristics apply for output frequencies between 45Hz and 1Hz. Below 1
Hz, instantaneous values meet the dc specifications. The ac source output is set to: sinewave, dc coupled,
real-time regulation, and is connected to a linear load.
Table A-3. Operation Below 45 Hz
1750
750
375
675
287
142
Frequency (linear scale)
0
2
4
68
10
Real Power (watts)
5 Hz
10 Hz
1
1750
750
375
Frequency (linear scale)
0
2
4
6
810
Reactive power (VA)
10 Hz
1
RMS current derating (A)
110
100
Fre
q
uenc
y
13
6.5
3.75
7
3.5
1.75
45 Hz
0
5 Hz
Frequency
0
RMS current programming accuracy (% error)
0
20 30
40
10
5
2% error at 10 Hz
10
AC coupled frequency response (dB)
.1
100
Fre
q
uenc
y
1 10
0
-20
-10
0.1%error @ 40Hz
1%error @ 10Hz
30% error @ 2Hz (-3dB point)
slope of 1 (20dB/decade)
Meets Measurement Accuracy specifications under the following
conditions:
Minimum Maximum allowable
measured frequency component
Sample rate frequency
to avoid aliasing
25 µs 45 Hz 20 kHz
50 µs 22.5 Hz 10 kHz
100 µs 11.25 Hz 50 kHz
200 µs 5.625 Hz 2.5 kHz
250 µs 4.5 Hz 2 kHz
(Anti aliasing filters have a corner frequency of 12.5 kHz.)