Fluke 5502A, Operator'S Manual

Page: 286 / 378

5502A
Operators Manual
9-22
Each option in the Marker menu is given below.
•
OUTPUT @ SCOPE terminal (50
Ω
) Shows the location of the signal output. If
the signal does not show on the oscilloscope, push

. To disconnect the signal,
push

.
•
SHAPE Shows the type of waveform. With reference to the 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 refer ton
the selected marker period (frequency) as follows:
Selection Period (Frequency)
Sine 10 ns – 2 ns (100 MHz – 500 MHz)
Spike 5 s – 20 ns (0.2 Hz – 50 MHz)
Square 5 s – 10 ns (0.2 Hz – 100 MHz)
Sq20% 20 ms – 100 ns (50 kHz – 10 MHz)
•
TRIG If you use the external trigger, use this key to move through the trigger
settings. The available trigger settings are: off, /1 (trigger signal shows on each
marker), /10 (trigger signal shows on every tenth marker), and /100 (trigger signal
shows on each 100 markers). You can also toggle the trigger off and on. Push the
TRIG OUT key.
•
MODE Shows you are in Marker mode. Use the softkey to change modes and open
the related menus for the other four oscilloscope calibration modes.
Default marker values are 1.000 ms, SHAPE = spike.
The

and

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, push

to increase the period to the nearest cardinal point, which is 2.000 ms. Push

to
decrease the voltage to the nearest cardinal point, which is 500
μ
s.
Time Base Marker Calibration Procedure for an Oscilloscope
This sample procedure uses the Time Marker function to examine the horizontal
deflection (time base) of your oscilloscope. See the manual for your oscilloscope for the
time base values recommended for calibration.
Before you start this procedure, verify that you are in Marker mode. If you are, the
Control Display shows the subsequent menu, see below.
gjh060.eps
Do the subsequent sample procedure to calibrate the time base.
1.
Connect the Calibrator to Channel 1 on the oscilloscope. Select 50
Ω
impedance or
use an external 50
Ω
termination. Make sure the oscilloscope is dc-coupled.
2. Apply a time marker value. Refer to the recommended calibration settings in your
oscilloscope manual. For example, to record 200 ns, push
   
  
, then push

.