B&K 4070A Manual Do Utilizador

 

 

BK Precision 4070A User Manual Rev.2.2 

11 

   Turn 4070A on. After a display of the hardware and software versions and serial number, the unit enters the Basic 
Sinewave mode of operation. The 4070A defaults to generating a 1.0 MHz sinewave at a level of +10.0 dBm.  

  To change the frequency, press the Right Field Arrow button once.  The cursor will move to the frequency field.  
A flashing digit indicates the cursor position.  

   

You can change the frequency two different ways. You can enter a new value or you can modify the current v alue.  

To enter a new value, type in the frequency using the numeric keypad.  Then press the MHz key for MHz, or the 
KHz key for KHz, or the Hz key for Hz.   The unit will make a two beeps sound to indicate that a new frequency 
value has been accepted.   

   To modify an existing value, use the è and ç keys to position the cursor over the digit you wish to change.  
Then press the é or ê key to increment or decrement that digit.  Alternatively, you can turn the rotary knob 
clockwise or counterclockwise to adjust the digit's value.  

   To set a new output level, press the Right Field Arrow button until the cursor flashes on the right hand side where 
the level is displayed.  You can change the level two ways. You can type in a new value or adjust it with the wheel 
or arrow keys. To enter a new level, type in the new level value using the numeric keypad.  For a negative dBm 
value, press the - key while entering the value. Finally, press the dBm key to enter the value as dBm or the Vp-p or 
mVp-p keys to enter the new value as a peak-to-peak voltage.   

   NOTE: The level you're entering here is considered a loaded level, i.e. the level that will appear across a 50O load 
connected to the output.  

   To modify an existing level value, use the è and ç  keys to position the cursor within a field.  Place the cursor 
over the digit you wish to change and press the é or ê key to increment or decrement the digit.  Alternatively, you 
can turn the rotary knob clockwise or counterclockwise to adjust the digit's value.  

   To select another operating mode, press the red Mode key once.

  

When pressed, the LCD display is cleared and the 

question Mode? is displayed. 

 

The Mode key acts as a shift type key in that the meaning of each button on the front 

panel changes to that described by the blue wording beneath it.  To enter the SWEEP mode, for example, first press 
the Mode

 

key and then press the number 4 key.  

   You can then use the Field Arrow keys to move the cursor to the parameter you wish to change.  Each numeric 
value can be entered or modified in the same manner described above.  This manual contains a separate chapter for 
each mo de, which describes in detail all parameters on the LCD display. User could switch to other generating 
modes by pressing One Touch Mode Selection key or “Mode” key for more options.  

   If you wish to select a new operating mode for the 4070A, press the red Mode key once. When pressed, the LCD 
display is cleared and the question Mode? is displayed.  The

Mode key acts as a shift type key in that the meaning 

of each button on the front panel changes to that described by the red wording beneath it.  To enter Sweep mode, for 
example, first press the Mode key and then press the number 

 key.  

   You can exit this question either by pressing the blue Mode key again or by pressing any key that does not have 
red text beneath it.  The 4070A will then return to the current mode unchanged.  

   Some modes are available on the 4070A that are not printed on the front panel. To access these modes, press the 
Mode key, and then the key labeled "Other" (Clear key) to bring up a scroll menu, which displays the additional 
modes. You can scroll through the list with the arrow keys or the wheel.  To select one of these modes, enter its 
menu number. User could switch to other generating modes by pressing One Touch Mode Selection key or “Mode” 
key for more options.