B&K Precision 4013B - Manual - Manual (Page 11)

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3.2 Display Window
The function generator has a graphic LCD display that can display up to 124 x 32 dots. When you power-
on the unit sine waveform is selected and current settings appear in the display. The bottom displays a
menu (selectable with function keys) that corresponds to the function, parameter or mode display selected.
3.3 Front Panel Controls
The front-panel controls select, display, and change parameter, function, and mode settings.
Use the numerical keypad, rotary input knob and the cursor movement keys to enter data into the
waveform generator.
To change a setting:
1. Press the key that leads to the item to change.
2. Move cursor using cursor keys to the appropriate position in the numeric field (if applicable).
3. Use the rotary input or the numerical keyboard to change the value of the displayed item. Changes take
effect immediately.
3.4 Connectors
The function generator has two BNC connectors on the front panel where you can connect coaxial cables.
These coaxial cables serve as carrier lines for output signals delivered from the function generator.
Output
Use this connector to transfer the main output signal from the function generator.
Sync Out
Use this connector to output a positive TTL sync pulse generated at each waveform cycle.
3.5 Output Connections
The waveform generator output circuits operate as a 50
Ω voltage source working into a 50 Ω
load. At higher frequencies, non terminated or improperly terminated output causes
aberrations on the output waveform. In addition, loads less than 50
Ω reduce the waveform
amplitude, while loads more than 50
Ω 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.