B&K Precision 2640 - Manual - Manual (Page 49)

49
Setting of Attenuator
The internal attenuator is used for maximum input signal -45dBm with
Menu function.
To set the internal attenuator, press the Shift key to change the
upper right icon to .
And press the No. 9 (ATTN) key.
To adjust the value of internal attenuator, press the Up/Down
Keys or rotate the Knob key. And Press the Enter key.
If the input signal is larger than -20dBm (ex. -10dBm, 0dBm, and etc), user
can use the user’s external attenuator.
Push the No. 9(ATTN)
Setting of the EXT. ATTEN. is as below
key.
INT. ATTEN in system is set up. Push the Dot key and then move
the previous menu. After selecting the EXT ATTEN using the Up/Down
Keys or rotate the Knob key, push the Enter key.
After selecting requested ATTEN using the Up/Down Keys or
rotate the Knob key, push the Enter key
Setting for
Internal or
External