Main Function keys 
: 
                Key  is  to  set  main  output  waveform  in  the  cycle  of 
Sine,  Triangle  and  Square.  When  the  key  is  pressed,  the 
related waveform LEDs will light up accordingly. 
                Key is to set main frequency entry mode. Key in the 
desired  value  of  frequency  by  using  the  number  keys  or 
Modify keys and Unit keys. 
When  the  key  is  pressed,  the  FREQ  LED  (on  parameter 
display area A) will be flashing until other mode is set. 
                Key is to set main amplitude entry mode. Key in the 
desired value of voltage by using the number keys or Modify 
keys and Unit keys. 
When  the  key  is  pressed,  the  AMPL  LED  (on  parameter 
display area B) will be flashing until other mode is set.   
                Key is to set main output offset voltage entry mode. 
Key in the desired value of voltage by using the number keys 
or Modify keys and Unit keys. 
When  the  key  is  pressed,  the  OFFS  LED  (on  parameter 
display area B) will be flashing until other mode is set.   
                Key  is  to  set  main  output  Duty  Cycle  entry  mode. 
Key in the desired value of percentage by using the  number 
keys or Modify keys and Unit keys. 
When  the  key  is  pressed,  the  DUTY  LED  (on  parameter 
display area B) will be flashing until other mode is set. 
                Key  is  to  start  performing  Amplitude  Modulation, 
Frequency  Modulation  or  Sweep  function.  When  the  key  is 
pressed again, the functions will stop. 
When  the key  is  pressed,  the  ON/OFF  LED  (on  MOD/SWP 
Function LED area) will light up, press again the key, the LED 
will be off.   
3
Modulation/Sweep 
Function keys 
: 
These keys control the functions of sweep and modulation. 
                Key  is  to  set  Span  of  Modulation  or  Sweep  entry 
mode and choose the source of modulation. 
If  set  to  source  choose  function,  must  use  Secondary 
Function mode.   
                Key  is  to  choose  the  type  of  modulation  between 
AM  and  FM.  If  want  to  set  to  FM  function,  must  use 
Secondary Function mode. 
                Key is to set Rate of Modulation, Sweep or Trigger 
entry  mode  and  choose  the  signal  source  of  Modulation, 
Sweep or Trigger. 
If want to set to signal, must use Secondary Functions mode.