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Download DL850 ScopeCorder Features Guide - Electro
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5 Waveform Acquisition Pulses per Rotation (Pulse/Rotate) When the time base is an external clock, you can specify how many pulses of the external clock signal (how many sampled data acquisitions) correspond to one mechanical rotation (or period). For example, if you set Pulse/Rotate to 100 pulses, when the record length is 1 kpoint, 10 rotations worth of sampled data will be acquired. When Pulse/Rotate is set to 1 pulse, each point of sampled data corresponds to a single rotation. The Pulse/Rotate setting only affects the horizontal-cursor measurement values and how the time axis is displayed on the screen. For example, if you set Pulse/Rotate to 100 pulses, when the record length is 1 kpoint, 1 div will correspond to 1 rotation. With these settings, if you move the cursor by 1 div, the measured horizontal value will only increase by 1. Selectable range for pulses: 1 to 24000 Notes about Sampling Using an External Clock Signal • You cannot acquire waveforms when the acquisition mode is set to Envelope or BoxAverage. • You cannot display waveforms in roll mode. • There is no function for dividing the frequency of the clock signal. • The time axis cannot be changed. To change the time-axis display range, change the record length, or zoom in on the time axis. • The measured time values in cursor measurements and automated measurements of waveform parameters indicate the number of clock signal pulses. For these measurements, units are not displayed. • Hard disk recording cannot be used. • The dual capture feature cannot be used. • The trigger settings listed below are invalid. Hold-off, trigger delay, period trigger, pulse width trigger Maximum Sample Rates for Each Module If you set the sample rate of the DL850/DL850V to a rate that is higher than a module’s maximum sample rate, because the data is updated at the module’s maximum sample rate, all the data within the module’s data update interval will be the same. The maximum sample rates for each module are listed below. Module 701250/701255 701251 701260/701270/701271/701275 (when measuring voltage) 701261/701262 (when measuring temperature) 701280 701265 720210 720220 720230 (LOGIC) 720240 (CAN MONITOR) Maximum Sample Rate Internal Clock 10 MHz 1 MHz 100 kHz 100 kHz 500 Hz 25 kHz 500 Hz 100 MHz 200 kHz 10 MHz 100 kHz External Clock 9.5 MHz 1 MHz 100 kHz 100 kHz 500 Hz 25 kHz 500 Hz 9.5 MHz 200 kHz 9.5 MHz 100 kHz Notes about Using the 16-CH Voltage Input Module 5-6 IM DL850-01EN
