5
2.1
Input Power Requirements
Input Power
The instrument has a universal AC input that accepts line voltage and frequency input within:
100 – 240 V (+/- 10%), 50 – 60 Hz (+/- 5%)
Before connecting to an AC outlet or external power source, be sure that the power switch is in the OFF
position and verify that the AC power cord, including the extension line, is compatible with the rated
voltage/current and that there is sufficient circuit capacity for the power supply. Once verified, connect
the cable firmly.
The included AC power cord is safety certified for this
instrument operating in rated range. To change a
cable or add an extension cable, be sure that it can
meet the required power ratings for this instrument.
Any misuse with wrong or unsafe cables will void the
warranty.
2.2
Output Connections
The waveform generator output circuits are protected against short circuit or nominal accidental
voltages applied to the main output connector. The output circuits operate as a 50 Ω voltage source
working into a 50 Ω load. At higher frequencies, a non-terminated or improperly terminated output
may cause aberrations on the output waveform. In addition, loads with an impedance less than 50 Ω
will reduce the waveform amplitude, while loads with an impedance greater than 50 Ω will increase
waveform amplitude.
Excessive distortion or aberrations caused by improper termination are less noticeable at lower
frequencies, 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.
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