19-5
IM 701210-06E
Specifications
19
DSP Channel Computation (Optional)
Item Specifications
Maximum computation rate 100 kS/s (6 channels simultaneously)
Computed result 16 bits (2400 LSB/div: reference range)
Applicable modules All modules
Computation types
Addition, subtraction, multiplication, and division between channels
+, –, ×, and ÷ (without coefficients)
Filters • Sharp filter
Filter format: FIR
Filter type: LPF/HPF/BPF
Filter order: 8 to 194 orders (varies depending on the type and cutoff frequency. For details,
see appendix 6.)
Characteristics: Steep cutoff, linear phase, and little overshoot
LPF: Cutoff frequency: 2% to 30% of fs (0.2% resolution) (fs = sampling frequency)
HPF: Cutoff frequency: 2% to 30% of fs (0.2% resolution)
BPF: Center frequency: 3% to 30% of fs (0.2% resolution), Bandwidth: 2% of fs
4.6% to 30% of fs (0.2% resolution), Bandwidth: 5% of fs
7% to 30% of fs (0.2% resolution), Bandwidth: 10% of fs
9.6% to 30% of fs (0.2% resolution), Bandwidth: 15% of fs
12% to 30% of fs (0.2% resolution), Bandwidth: 20% of fs
Cutoff characteristics: –40 dB at 2fc (LPF), –40 dB at 0.5fc (HPF) (fc = cutoff frequency)
Phase: Linear phase characteristics
• Gauss filter
Filter format: FIR
Filter type: LPF
Filter order: 5th to 49th order (varies depending on the type and cutoff frequency. For
details, see appendix 6.)
Characteristics: Smooth cutoff characteristics, linear phase, and no overshoot
LPF: Cutoff frequency: 2% to 30% of fs (0.2% resolution) (fs = sampling frequency)
Cutoff characteristics: –3.0×(f/fc)
2
dB (f: frequency, fc: cutoff frequency)
Phase: Linear phase characteristics
• IIR (Butterworth) filter
Filter format: IIR (Butterworth)
Filter type: LPF/HPF/BPF
Filter order: 4th order
Characteristics: Characteristics close to an analog filter, flat pass band, and overshoot
LPF: Cutoff frequency: 0.2% to 30% of fs (0.2% resolution) (fs = sampling frequency)
HPF: Cutoff frequency: 0.2% to 30% of fs (0.2% resolution)
BPF: Center frequency 0.6% to 30% of fs (0.2% resolution) Bandwidth: 1% of fs
1.2% to 30% of fs (0.2% resolution) Bandwidth: 2% of fs
2.6% to 30% of fs (0.2% resolution) Bandwidth: 5% of fs
5.2% to 30% of fs (0.2% resolution) Bandwidth: 10% of fs
7.6% to 30% of fs (0.2% resolution) Bandwidth: 15% of fs
10.2% to 30% of fs (0.2% resolution) Bandwidth: 20% of fs
Cutoff characteristics: –24 dB/Oct
Phase: Nonlinear phase characteristics
• MEAN (moving average)
Filter format: FIR (moving average)
Filter type: LPF
Filter order: Select from 2, 4, 8, 16, 32, 64, and 128
Characteristics: Comb-shaped cutoff characteristics, high noise suppression effect, and no
overshoot
Differentiation LPF (bandwidth limit) ON/OFF possible
LPF (sharp): Cutoff frequency: 2% to 30% of fs (0.2% resolution)
Integration/Summation Reset condition of integration: Acquisition start and ON/OFF of the channel
Selectable reset conditions
Over Limit (±10div): When the computed value exceeds +10 divisions or –10divisions of the
Value/Div setting
Zero Cross to Positive: When the source signal produces a positive edge at the zero-crossing
point
Zero Cross to Negative: When the source signal produces a negative edge at the zero-crossing
point
19.5 Function/15.6 Built-in Printer
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