6-6
IM DL850-03EN
Real Time Math (Option)
These features are supported by firmware versions 1.30 and later of the DL850/DL850V. The following real time math operations
are supported by firmware version 2.00 and later: resolver, IIR filter, and demodulation of the pulse width modulated signal.
Item Specifications
Math expression Real Time Math using hardware
Max. number of math channels 16 (select analog waveform storage or Real Time Math result storage)
Math source channels Analog channel 1 to channel 16 (multi-channel modules can also be selected as math
sources)
Math result 16 bits (2400 LSB/div). Results are converted to 16-bit values according to the scaling
setting and stored in memory.
Digital filter Math can be performed independently on each channel. Math can be performed on up
to 16 channels at the same time.
Math rate Max. math rate (sample rate): 1 MS/s. The math rate is selected automatically
depending on the set frequency. The possible rates are 1 MS/s, 100 kS/s, 10 kS/s, 1
kS/s and 100 S/s.
Filter types Mean (moving average)
Filter format: FIR (moving average)
Filter type: LPF
Number of moving
average points:
Selectable from 2, 4, 8, 16, 32, 64, and 128
Gauss:
Filter format: FIR
Filter type: LPF
Filter order: 5 to 49
Cutoff frequency: 300 kHz to 2 Hz
Resolution: 300 kHz to 30 kHz, in steps of 2 kHz
Resolution: 29.8 kHz to 3 kHz, in steps of 200 Hz
Resolution: 2.98 kHz to 300 Hz, in steps of 20 Hz
Resolution: 298 Hz to 30 Hz, in steps of 2 Hz
Resolution: 29.8 Hz to 2 Hz, in steps of 0.2 Hz
Cutoff characteristic: –3.0 × (f/fc)
2
(where f is the frequency and fc is the cutoff
frequency)
Sharp:
Filter format: FIR
Filter type: LPF, HPF, BPF
Filter order: 5 to 194
LPF: Cutoff frequency: 300 kHz to 2 Hz
Resolution: 300 kHz to 30 kHz, in steps of 2 kHz
Resolution: 29.8 kHz to 3 kHz, in steps of 200 Hz
Resolution: 2.98 kHz to 300 Hz, in steps of 20 Hz
Resolution: 298 Hz to 30 Hz, in steps of 2 Hz
Resolution: 29.8 Hz to 2 Hz, in steps of 0.2 Hz
HPF: Cutoff frequency: 300 kHz to 200 Hz
Resolution: 300 kHz to 30 kHz, in steps of 2 kHz
Resolution: 29.8 kHz to 3 kHz, in steps of 200 Hz
Resolution: 2.98 kHz to 200 Hz, in steps of 20 Hz
BPF: Center frequency: 300 kHz to 300 Hz
Resolution: 300 kHz to 30 kHz, in steps of 2 kHz
Resolution: 29.8 kHz to 3 kHz, in steps of 200 Hz
Resolution: 2.98 kHz to 300 Hz, in steps of 20 Hz
Bandwidth: 200, 150, 100, 50, 20, 15, 10, 5, 2, 1.5, 1
kHz, 500, 200 Hz (there are limits based on
the center frequency)
Cutoff characteristic: –40 dB @ 2fc (LPF), –40 dB @ 0.5fc (HPF)
Phase: Linear phase characteristics
IIR:
Filter format: IIR (Butterworth)
Filter type: LPF, HPF, BPF
Filter order: 4
6.5 Features
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