User's Manual
To select the output termination
The function generator has a fixed output impedance of 50 ohms on the
OUTPUT terminal. You can specify whether you are terminating the
output into a 50
W load or an open circuit. Incorrect impedance matching
between the source and load will result in an output amplitude or dc offset
which does not match the specified value.
 Shift  1 Turn on the menu.
 Menu On/Off   A: MOD MENU 
 >    >    >  2 Move across to the SYS MENU choice on this level. 
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 D: SYS MENU
     3 Move down a level to the OUT TERM command.
 1: OUT TERM
 >   4  Move down a level and then across to the HIGH Z choice. 
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With the output termination set to “HIGH Z”, the function generator
allows you to set the unloaded (open circuit) output voltage. 
 HIGH Z
 Enter  5 Save the change and turn off the menu.
The function generator beeps and displays a message to show that the
change is now in effect. You are then exited from the menu. 
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You can also use the knob to scroll left or right through the choices on each 
level of the menu.
Chapter 3 Front-Panel Menu Operation
To select the output termination 
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