13-11
IM WT3001E-51EN
Cycle-by-Cycle Measurement
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13
Index
• When Setting the Trigger Source to Ext Clk
Apply a trigger signal to the external clock input connector (EXT CLK) on the rear
panel according to the following specifications.
EXT. CLK
Item Specifications
Connector type
BNC connector
Input level
TTL
Minimum pulse width
1 µs
Trigger delay time
Within (1 µs + 1 sample period)
CAUTION
Applying a voltage outside the range of 0 to 5 V to the external clock input
connector (EXT CLK) can damage the instrument.
French
ATTENTION
L’application d’une tension comprise en dehors de la plage 0 à 5V sur le connecteur
d'entrée d’horloge externe (EXT CLK) risque de provoquer un endommagement de
l’instrument.
• Input Circuit and Time Chart of the External Trigger Signal
External trigger signal
External trigger
100 Ω
+5 V
Minimum pulse
width
Trigger delay
time
(when set to )
Internal trigger
EXT CLK
• Selecting the Trigger Slope
The up and down movement of a signal level is called a slope. When the slope is used
as one of the trigger conditions, it is called a trigger slope. You can select the trigger
slope from the following:
•
: The trigger occurs when the trigger source signal rises above the trigger level
from a lower level.
•
: The trigger occurs when the trigger source signal falls below the trigger level
from a higher level.
•
: Trigger occurs on both the rising and falling cases.
13.3 Setting the Measurement Conditions