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Now downloading free:Velleman Instruments PCS500  [report bad file]  

Download Velleman Instruments PCS500 docs - Oscilloscopes, digital oscilloscopes, Tektronix oscilloscopes, cathode ray ocilloscopes, pc oscilloscopes service manuals and repair information

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File name:PCS500_operation.pdf
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Descr:PC-OSCILLOSCOPE PCS500. Analog and digital circuit sections. Description of the operation.
Group:Electronics > Measuring equipment > Oscilloscopes >
Uploaded:2010-10-06 02:10:06
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PCS500_operation.pdfPC-OSCILLOSCOPE PCS500 Analog and digital circuit sections Description of the operation Operation of the analog section This description concerns only channel 1 (CH1) input stages. The operation of CH2 is similar. The signal is applied to the input attenuator either via relay contact RY1 or via capacitor C4. The relay is used to select the type of input connection, AC or DC. If DC connection is selected the input signal is directly connected to the input attenuator. This position is probably the mainly used input connection type. Both DC and AC components of the signal can be measured and displayed on the screen. If AC coupling is selected the input signal passes through a 47 nF capacitor C4 to the input attenuator. The capacitor blocks DC component of the input signal to pass to the input circuit. Also AC signals at very low frequencies are blocked. The low frequency limit is about 5 Hz (at -3dB). The AC position is useful if low amplitude AC signals over a rather high DC voltage hav

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