BK Precision 4007B, User Manual

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especially with sine and triangle waveforms. To ensure
waveform integrity, follow these precautions:
1. Use good quality 50
Ω coaxial cable and connectors.
2. Make all connections tight and as short as possible.
3. Use good quality attenuators if it is necessary to
reduce waveform amplitudes applied to sensitive circuits.
4. Use termination or impedance-matching devices to
avoid reflections.
5. Ensure that attenuators and terminations have
adequate power handling capabilities.
If there is a DC voltage across the output load, use a
coupling capacitor in series with the load. The time
constant of the coupling capacitor and load must be long
enough to maintain pulse flatness.
Impedance Matching
If the waveform generator is driving a high impedance,
such as a 1 M
Ω input impedance (paralleled by a stated
capacitance) of an oscilloscope vertical input, connect
the transmission line to a 50
Ω attenuator, a 50 Ω
termination and to the oscilloscope input. The attenuator
isolates the input capacitance of the device and
terminates the waveform generator properly.
3.6 MENU Keys
These keys select the main menus for displaying or
changing a parameter, function or mode.