YOKOGAWA DL7440 User Manual

6-11
IM 701450-01E
6
Triggers
Explanation
This setting is used to activate a trigger when the input signal of a specified channel
crosses the trigger level.
Trigger Source
You can select from CH1 to CH8/4. You can select up to channel CH4 and CH8 on the
DL7440 and DL7480, respectively.
• For the procedure of setting the external signal applied to the EXT TRIG IN terminal
on the rear panel as the trigger source (setting the trigger source to EXT), see section
6.6.
• For the procedure of activating the trigger in sync with the power supplied to the
DL7400 (setting the trigger source to line), see section 6.7.
Trigger Level
• The selectable range is 8 divisions within the screen. The resolution is 0.01 divisions.
For example, the resolution for 2 mV/div is 0.02 mV.
• You can also press the RESET key to reset the trigger level to the current offset
voltage.
Trigger Slope
You can select how the trigger source signal is to cross the trigger level in activating the
trigger.
Activated when the trigger source changes from below the trigger level to above the
trigger level (rising).
Activated when the trigger source changes from above the trigger level to below the
trigger level (falling).
Activated on either a rising edge or falling edge.
Trigger Coupling
You can select the trigger coupling.
AC Uses a signal that is obtained by removing the DC component from the trigger source
signal.
DC Uses the trigger source signal as-is.
HF Rejection
Set HF rejection to 15 kHz or 20 MHz if you wish to use a signal that is obtained by
removing the high frequency components (frequency components greater than 15 kHz or
20 MHz) from the trigger source signal as the trigger source.
Hysteresis
Sets a width to the trigger level so that triggers are not activated by small changes in the
trigger signal.
Approximately 0.3 divisions
*
of hysteresis around the trigger level.
Approximately 1 division
*
of hysteresis around the trigger level.
* The value above is an approximate value. It is not strictly warranted.
Hold Off
See section 6.4.
6.5 Setting the Edge Trigger (SIMPLE)

YOKOGAWA DL7440 Specifications

General

Brand	YOKOGAWA
Model	DL7440
Category	Test Equipment
Language	English