Front-Panel Menu Operation 
81150A and 81160A User’s Guide    21 
Pressing the Cancel key cancels the selection/input and helps you exit out 
of a screen. But the functionality of exiting out of a screen is limited to a 
few screens, like selecting an Arbitrary waveform. 
 
The 81150A / 81160A consists of two channels and operates in two 
different modes of operation: 
Coupling off: The two channels operate entirely independent. Frequency 
generation for both channels is based on same clock reference. 
Coupling on: The frequency, trigger mode, waveform type and advanced 
mode are identical for both channels. The delay between the channels is 
specified. 
 
A modulation input (for AM, FM, PM, FSK, PWM) for each channel is 
provided on the back-panel. In the two channel version each channel can 
modulate the other channel. 
Refer to the Appendix for a list of all coupled parameters.  
 
 
Press the Graph key to view a graphical representation of the waveform.  
Press it again to exit from that mode.  
Not every screen has a graphical representation, e.g. like the Trigger Mode 
Screen. 
 
 
Numeric Keypad, 
Cursor Keys,  
These keys are used to select and modify parameters when operating the 
instrument. 
Use the numeric keypad to enter numbers and the menu softkeys to select 
units.  
Use the Rotary knob and cursor keys to modify the displayed number.