HBM Genesis GEN5i User Manual page 384

Analog to Digital Conversion
Sample rate; per channel
ADC resolution; one ADC per channel
ADC type
Time base accuracy
Binary sample rate
Maximum binary sample rate
External time base frequency
External time base frequency divider
External time base level
External time base minimum pulse width
Mainframes using Interface/Controller Modules shipped before 2012: ±30 ppm.
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Amplifier Bandwidth and Filtering
Using different filter selections (Wideband/Bessel IIR/Butterworth IIR/etc.) or different filter bandwidths will lead to phase mismatches between
channels.
Bessel IIR
Butterworth IIR
Elliptic IIR
384
0.1 S/s to 200 kS/s
18 bit
Successive Approximation Register (SAR); Analog Devices AD7641BCPZ
Defined by mainframe: ± 3.5 ppm
Supported; produces rounded BIN values when calculating FFT's
204.8 kS/s
0 S/s to 200 kS/s
Divide external clock by 1 to 2
TTL
200 ns
When Bessel IIR filter is selected, this is always a combination of an analog Bessel anti
alias filter and a digital Bessel IIR filter.
Bessel filters are typically used when looking at signals in the time domain. Best used for
measuring transient signals or sharp edge signals like square waves or step responses.
When Butterworth IIR filter is selected, this is always a combination of an analog Butterworth
anti alias filter and a digital Butterworth IIR filter.
Best used when working in the frequency domain. When working in the time domain this
filter is best used for signals that are (close to) sine waves.
When Elliptic IIR filter is selected, this is always a combination of an analog Butterworth anti
alias filter and a digital Elliptic IIR filter.
Best used when working in the frequency domain. When working in the time domain this
filter is best used for signals that are (close to) sine waves.
; aging after 10 years ± 10 ppm
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GEN5i
I2679-4.0 en