B&K Precision 4040B - Manual - Manual (Page 22)

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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 Connector
Use this connector to transfer the main output signal from the
function generator.
Trig In Connector
Use this connector to apply an external trigger or gate signal,
depending on the waveform generator setting, to the generator.
When the built-in frequency counter is enabled, this connector
becomes an input for the counter.