HP 33120A, User Manual

Page: 57 / 118

Duty Cycle
Applies only to square waves . Duty cycle is specified as a percentage and
represents the amount of time per cycle that the square wave is high.
•
Duty cycle: 20% to 80%, in 1% increments ( frequency
≤
5 MHz).
40% to 60%, in 1% increments ( frequency > 5 MHz).
The default is 50%.
•
The duty cycle is stored in volatile memory; the duty cycle is set to
50% when power has been off or after a remote interface reset.
The
APPLy
command automatically sets the duty cycle to 50% for
square waves.
•
Before attempting to set the duty cycle, you must enable the square
wave function. From the front panel, “
SQUARE ONLY
” is displayed if
square wave is not currently active. From the remote interface,
no error is generated, but the specified duty cycle is remembered
when you change to the square wave function.
•
The duty cycle setting is remembered when you change from square
wave to another function. When you return to the square wave
function, the previous duty cycle is used.
T
D
T
Duty Cycle =
T
D
T
(where T =
1
frequency
)
Chapter 3 Features and Functions
Output Configuration
66