44 34405A User’s and Service Guide
2Features and Functions
• Turning off the beeper does not disable the key click 
generated when you press a front- panel key.
• A beep tone is always emitted (even with the beep state 
turned OFF) in the following cases.
• A continuity measurement is less than or equal to the 
continuity threshold.
• A SYSTem:BEEPer command is sent.
• An error is generated.
• In addition to the beep operations just described, when 
the beeper is ON, a single beep occurs for the following 
cases (turning the beeper OFF disables the beep for the 
following cases):
• When a new Min or Max value is stored
• When a new stable reading is updated on display for 
Math Hold operation
• When a measurement exceeds the HI or LO Limit value
• When a forward- biased is measured in the Diode 
function
34405A users guide.book  Page 44  Saturday, September 2, 2006  3:38 PM