Fluke 5522A Operators, Operator'S Manual

Page: 97 / 426

Front Panel Operation
How to Set Output
4
4-21
nn075f.eps
6. Press
O
to activate the calibrator output.
Several softkey labels appear on the Control Display in the ac voltage function,
depending on which waveform is selected: DUTY, OFFSET and WAVE.
nn076f.eps
•
DUTY (Duty Cycle) When the square wave is selected, DUTY appears, allowing
you to modify the duty cycle of the square wave. The range is 1.00 to 99.00 %. The
default is 50.00 %. The duty cycle must be 50.00 % if you want to enter an OFFSET
(see below).
•
OFFSET (Voltage Offset) appears when the desired output is less than 33 V (sine
waves), 65 V (square waves) or 93 V (triangle waves and truncated sine waves). This
softkey allows you to add a positive or negative dc offset voltage to the ac output
signal. See “Entering a DC Offset” later in this chapter for more information. When a
voltage output is expressed in dBm, voltage offset is not available. You can enter an
offset for a square wave output only when the duty cycle is 50.00 % (see DUTY
above).
• Φ
& REF MENUS (Phase Difference and 10 MHz reference source.) Selects the
phase difference between the NORMAL and AUX outputs, selects internal or
external 10 MHz reference, and sets the phase difference between an external master
Calibrator (using 10 MHz IN/OUT) and the NORMAL output. See “Adjusting the
Phase” and “Synchronizing the Calibrator using 10 MHz IN/OUT” later in this
chapter.
•
WAVE (Waveform) allows you to select one of four different types of waveforms:
sine wave, triangle wave, square wave, and truncated sine wave. (See “Waveform
Types” later in this chapter for more information). Whenever a non-sinusoidal
waveform is selected, the Output Display shows Pp (p-p). Only sine wave is allowed
for output in dBm.