Features and Functions
81150A and 81160A User’s Guide 103
For square and pulse waveforms, the 81150A / 81160A may not be able to
use the full range of duty cycle values at higher frequencies as shown
below:
Duty cycle is limited by minimum width specification.
The high phase and the low phase of the square, or pulse wave may not be
less than Wmin.
The limits for the duty cycle are calculated from this restriction:
DcycMin = 100% * Wmin/period
DcycMax = 100% * (1 – Wmin/period)
81150A: Where Wmin is either 4.1ns or 10ns depending on the selected
amplifier (See section Amplifier Type Selection).
81160A: Where Wmin is 1.5ns.
To set the output frequency, press the Frequency softkey for the selected
function. Then use the knob or numeric keypad to enter the desired
frequency. To set the waveform period instead, press the Frequency softkey
again to toggle to the Period softkey.
Remote Interface
Operation
The following function is used to configure the output frequency remotely:
:FREQuency[1|2] {<frequency>|MINimum|MAXimum}
You can also use the APPLy command to select the function, frequency,
amplitude, and offset with a single command.
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