Calibrating The Voltage Amplitude On An Oscilloscope; The Volt Function - Fluke 5500A Operator's Manual

5500A
Operator Manual

8-25. Calibrating the Voltage Amplitude on an Oscilloscope

The oscilloscope voltage (vertical) gain is calibrated by applying a dc or low frequency
square wave signal and adjusting its gain to meet the height specified for different
voltage levels, as designated by the graticule line divisions on the oscilloscope. The
signal is applied from the Calibrator in VOLT mode. The specific voltages that you
should use for calibration, and the graticule line divisions that need to be matched, vary
for different oscilloscopes and are specified in your oscilloscope's service manual.

8-26. The VOLT Function

You can calibrate the Voltage gain using the VOLT function. Access this function
through the VOLT menu, which appears when you press
VOLT softkey from the SCOPE menu.
You can press the MODE softkey to cycle through the functions in the order shown, or
you can press
Each menu item is described below:
8-16
Output @ SCOPE.
1 M DC<-AC
1 M DC<-AC
50
DC->AC
to return directly to the SCOPE menu.
OUTPUT @ SCOPE Indicates the location of the signal output. If the signal does
not appear on the oscilloscope, press
1 M Toggles between 1 M and 50
oscilloscope.
DC<-AC toggles from ac to dc, producing the dc equivalent output. DC->AC
Toggles from dc to ac.
TRIG If you are using square wave to calibrate the external trigger, use this key to
toggle the trigger off and on. When on, the reading will show "/1", which indicates
that the external trigger is at the same frequency as the volt output. The external
trigger can be useful for many oscilloscopes that have difficulty triggering on low
amplitude signals. You can also toggle the trigger off and on by pressing
V/DIV MENU Opens the voltage scaling menu, which lets you select the scale of
the signal in volts per division. This menu is described below in detail, under "The
V/DIV Menu."
MODE Indicates you are in VOLT mode. Use the softkey to change modes and
open menus for other oscilloscope calibration modes.
TRIG V/DIV
off MENU
(see "The
off
V/DIV
/1
Menu")
. To disconnect the signal, press
to match the input impedance of the
, or when you press the
MODE
volt
volt
edge
levsine
marker
wavegen
video
pulse
meas Z
overld
.
.