B&K Precision 4005DDS - Manual - Manual (Page 10)

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9) AMPLITUDE KNOB
Controls the amplitude of the signal at the MAIN OUTPUT. Pull knob to
attenuate the signal by 20 dB. This can be combined with ATTENUATE KEY for
total of 40 dB attenuation.
10) DC OFFSET
Applies a DC offset to the main signal. Pull knob to turn on. Clockwise rotation
from center changes the DC offset in a positive direction, while counterclockwise
rotation from center changes the DC offset in a negative direction.
11) NUMBER PAD
Use these keys to set the frequency value or duty cycle %.
12) LED DISPLAY
Displays the set frequency.
4.2 Rear Panel Description
13) DC FAN
40 mm fan for cooling purposes.
14) KENSINGTON SECURITY SLOT
For use with Kensington locks to secure your product and prevent theft.
15) INPUT AC POWER SELECTOR AND FUSE
Power input socket and fuse compartment. Refer to arrow mark on fuse plug
and mark on panel for selected input line voltage.
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