Fluke 5500A - Shortcuts for Setting the Frequency and Voltage; The Leveled Sine Wave Function

5500A
Operator Manual
8-74
8-101. The Leveled Sine Wave Function
The Leveled Sine Wave (Levsine) function uses a leveled sine wave, whose amplitude
remains relatively constant over a range of frequencies, to check the oscilloscope’s
bandwidth. When you check your oscilloscope, you change the wave’s frequency until
the amplitude displayed on the oscilloscope drops 30%, which is the amplitude that
corresponds to the -3 dB point.
To access the Levsine menu, press the softkey under MODE until “levsine” appears.
Note
Make sure there is no cable connected to TRIG OUT while using the Levsine
function..
gl029i.eps
Each option in the Levsine menu is described below.
• OUTPUT @ SCOPE terminal (50 Ω) Indicates the location and impedance of the
signal output. If the signal does not appear on the oscilloscope, press O. To
disconnect the signal, press Y. You cannot change the impedance while you are
in Levsine mode.
• MORE OPTIONS Opens additional menu items, which are described in detail
under “The MORE OPTIONS Menu.”
• SET TO LAST F Toggles between the current frequency setting and the reference
value of 50 kHz. This option is useful for reverting to the reference to check the
output after you make adjustments at another frequency.
• MODE Indicates you are in Levsine mode. Use the softkey to change modes and
open the corresponding menus for the other four calibration modes.
Note
If a question mark appears in the Output Display, then no specifications are available
for the frequency you are using. This will occur at frequencies greater than 250 MHz.
8-102. Shortcuts for Setting the Frequency and Voltage
Three options are available for controlling the sine wave settings.
• SET TO LAST F toggles between the last frequency used and the reference
frequency of 50 kHz, letting you check the output at the reference after you make
adjustments at a different frequency.
• MORE OPTIONS lets you use an automatic frequency sweep and lock the voltage
range, if necessary. The following section provides details on this menu.
• The X and D keys step frequencies up or down in amounts that let you
quickly access a new set of frequencies. For example, if the value is 250 kHz, X