REMOTE INTERFACE 
309 
For FSK, the modulating waveform is a square 
wave with a duty cycle of 50%. 
SOURce[1|2|3|3RF]:FSKey:FREQuency 
{<frequency>|MINimum|MAXimum} 
SOUR1:FSK:FREQ +1.0000E+02  
Sets the FSK hop frequency to to 100Hz. 
SOURce[1|2|3|3RF]:FSKey:FREQuency? 
[MINimum|MAXimum] 
Returns the frequency in 
Hz. 
SOUR1:FSK:FREQ?  
+1.0000000000000E+02 
Returns the frequency to 100Hz. 
SOURce[1|2|3|3RF]:FSKey:INTernal:RATE 
 
Sets or queries the FSK rate for internal sources 
only.  
External sources will ignore this command.   
SOURce[1|2|3|3RF]:FSKey:INTernal:RATE {<rate in 
Hz> |MINimum|MAXimum} 
Sets the rate to the maximum (1MHz). 
SOURce[1|2|3|3RF]:FSKey:INTernal:RATE? 
[MINimum|MAXimum] 
Returns the FSK rate in 
Hz. 
SOUR1:FSK:INT:RATE? MAX 
+1.000000000E+05 
Returns the maximum FSK rate allowed.