Fluke 5522A Operators, Operator'S Manual

Page: 335 / 426

SC1100 Oscilloscope Calibration Option
How to Calibrate the Time Base of an Oscilloscope
10
10-21
The Time Marker Function
The Time MARKER function, which is available through the MARKER menu, lets you
calibrate the timing response of your oscilloscope. To access the MARKER menu, press
the softkey under MODE until “marker” appears.
gjh059.eps
You can press the MODE softkey to cycle through the functions in the order shown, or
you can press
P
to return directly to the SCOPE menu.
Each option in the MARKER menu is described below:
•
OUTPUT @ SCOPE terminal (50
Ω
) Indicates the location of the signal output. If
the signal does not appear on the oscilloscope, press
O
. To disconnect the signal,
press
Y
.
•
SHAPE Indicates the type of waveform. Depending on frequency setting, possible
selections are sine, spike, square (50 % duty cycle square wave), and sq20 % (20 %
duty cycle square wave.) Note that selections available under
SHAPE
depend on the
selected marker period (frequency), as follows:
Selection Period (Frequency)
sine 10 ns - 1 ns (100 MHz – 1 GHz)
spike 5s - 20 ns (0.2 Hz - 50 MHz)
square 5s - 10 ns (0.2 Hz - 100 MHz)
sq20 % 20 ms - 100 ns (50 kHz - 10 MHz)
•
TRIG If you are using the external trigger, use this key to cycle through the trigger
settings. The available trigger settings are: off, /1 (trigger signal appears on each
marker), /10 (trigger signal appears on every tenth marker), and /100 (trigger signal
appears at every 100th marker).
•
MODE Indicates you are in MARKER mode. Use the softkey to change modes and
open menus for other oscilloscope calibration modes.
Default marker values are 1.000 ms, SHAPE = spike.
The
X
and
D
keys step the voltages through cardinal point values of an
oscilloscope in a 1-2-5 step sequence. For example, if the period is 1.000 ms, pressing
X
increases the period to the nearest cardinal point, which is 2.000 ms. Pressing
D
decreases the voltage to the nearest cardinal point, which is 500
μ
s.