DI-770 Oscilloscope provides five virtual instruments in one
DI-770 Oscilloscope provides five virtual instruments in one
DI-770 Oscilloscope provides five virtual instruments in one
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<strong>DI</strong>-<strong>770</strong> and WINDAQ/Scope Manual<br />
1. Introduction<br />
Many technicians <strong>in</strong>vestigate electrical signals. Though the measurement may not be electrical, the physical variable<br />
is often converted to an electrical signal, with a special transducer. Common transducers are accelerometers, pressure<br />
probes, current clamps and temperature probes. The advantages of convert<strong>in</strong>g the physical parameters to electrical<br />
signals are large, s<strong>in</strong>ce several <strong><strong>in</strong>struments</strong> for exam<strong>in</strong><strong>in</strong>g electrical signals are available.<br />
The <strong>DI</strong>-<strong>770</strong> is a two channel, 25 or 100 M samples/sec measur<strong>in</strong>g <strong>in</strong>strument. With the accompany<strong>in</strong>g software the<br />
<strong>DI</strong>-<strong>770</strong> can be used as an oscilloscope, a storage oscilloscope, a spectrum analyzer, a true RMS voltmeter, or a data<br />
logger. All <strong><strong>in</strong>struments</strong> measure by sampl<strong>in</strong>g the <strong>in</strong>put signals, digitiz<strong>in</strong>g the values, process them, save them and display<br />
them.<br />
ATTENTION!<br />
Measur<strong>in</strong>g directly on the LINE VOLTAGE can be very dangerous. The OUTSIDE of the BNC CONNECTORS at<br />
the <strong>DI</strong>-<strong>770</strong> are connected with the GROUND of the computer.<br />
Use a good isolation transformer or a differential probe when measur<strong>in</strong>g at the LINE VOLTAGE or at GROUND-ED<br />
POWER SUPPLIES!<br />
In case this has not been considered and the GROUND of the <strong>DI</strong>-<strong>770</strong> is connected to a positive voltage, a short-circuit<br />
current will be flow<strong>in</strong>g. Because of this short-circuit current both the <strong>DI</strong>-<strong>770</strong> and the computer can be damaged.<br />
Safety<br />
Before you start work<strong>in</strong>g with the <strong>DI</strong>-<strong>770</strong>, first read these safety rules.<br />
• Avoid work<strong>in</strong>g al<strong>one</strong>.<br />
• Check the probes / test leads for damages. Do NOT use them if they are damaged.<br />
• Take care when measur<strong>in</strong>g at voltages higher than 25V AC or 60 V DC.<br />
• Measur<strong>in</strong>g directly on the LINE VOLTAGE can be very dangerous. The OUTSIDE of the BNC CONNECTORS<br />
at the <strong>DI</strong>-<strong>770</strong> are connected with the GROUND of the computer.<br />
• Use a good isolation transformer or a differential probe when measur<strong>in</strong>g at the LINE VOLTAGE or at<br />
GROUNDED POWER SUPPLIES!<br />
• In case this has not been considered and the GROUND of the <strong>DI</strong>-<strong>770</strong> is connected to a positive voltage, a shortcircuit<br />
current will be flow<strong>in</strong>g. Because of this short-circuit current both the <strong>DI</strong>-<strong>770</strong> and the computer can be<br />
damaged.<br />
Introduction<br />
1
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