Relevant Keys
Chapter 5 Vertical and Horizontal Axes
6.5 Setting the Edge Trigger (SIMPLE)
<For a description of this function, see page 1-8>
Relevant Keys
ACTION DELAY
X - Y MENU MENU PHASE
SEARCH HORIZONTAL VERTICAL TRIGGER TRIG D HELP ESC SELECT RESET SIMPLE MODE POSITION MATH MISC FILE CLEAR TRACE HISTORY MEASURE SETUP PRESET DISPLAY CURSOR CH 1 CH 2 CH 3 CH 4 POWER
COPY IMAGE SAVE SHIFT
ZOOM GO/NO-GO ENHANCED ACQ START/STOP SNAP SHOT
V DIV TIME DIV
Operating Procedure
Setting the Trigger Source
1. Press SIMPLE.
2. Press the Source soft key to display the trigger source menu.
3. Press the soft key corresponding to the channel to be set as the trigger source. (Ch3 and CH4 are not displayed on the DL1620.)
Setting the Trigger Level
4. If the jog shuttle control is not set to Level, press the Level soft key.
5. Turn the jog shuttle to set the trigger level.
You can use the arrow keys to move between the digits. In addition, pressing
RESET resets the trigger level to the current offset voltage value.
Note
The trigger level setting applies to simple trigger and enhanced trigger.
Setting the Trigger Slope
6. Press the Slope soft key to select , , or .
Setting the Trigger Coupling
7. Press the Coupling soft key to select DC or AC.
Note
Triggering
6
Setting the HF Rejection ON or OFF
8. Press the HF Reject soft key to the desired frequency to set HF rejection ON or OFF.
Setting the Hysteresis
9. Press the Hysteresis soft key to select or .
Setting the Hold Off
10. Set the hold off time according to the procedures given in 6.4, “Setting the Hold Off Time.”
Explanation
An edge trigger is generated when the trigger source signal crosses a specified level.
Selecting the Trigger Source
Select from the following list of choices. • CH1 to CH4 (or CH1 to CH2 for the DL1620)
• Ext (EXT TRIG IN terminal on the rear panel (or EXT. terminal on the front panel of the DL1620), see section 6.6, “Setting the External Trigger (SIMPLE)”)
• Line (power signal, see section 6.7, “Generating Trigger on the Power Signal (SIMPLE)”)
Setting the Trigger Level
Range: 8 div within the screen Resolution: 0.01 div
For example, the resolution is 0.02 mV when the V/DIV setting is 2 mV/div. You can also reset the trigger level to the current offset voltage with one key operation.
Setting the Trigger Slope
Select the trigger activation method relative to changes in trigger source level from the following three choices.
: 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.
Setting the Trigger Coupling
Select from the following list of choices.
AC: Uses a signal that is obtained by removing the DC component from the trigger source signal.
DC: Uses the trigger source signal as the trigger signal.
Setting the HF Rejection
Set ON when you wish to use a signal source obtained by removing the high-frequency components from the trigger signal as the trigger source.
Setting the Hysteresis
Sets a width to the trigger level so that the trigger is not activated by small changes in the trigger signal.
: Approx. 0.3 div* of hysteresis around the trigger level. : Approx. 1 div* of hysteresis around the trigger level.
*: The values above are estimated values. They are not strictly guaranteed.
Setting the Hold Off
See section 6.4, “Setting the Hold Off Time.”
Triggering
6
6.6
Setting the External Trigger (SIMPLE)
Relevant Keys
ACTION DELAY
X - Y MENU MENU PHASE
SEARCH HORIZONTAL VERTICAL TRIGGER TRIG D HELP ESC SELECT RESET SIMPLE MODE POSITION MATH MISC FILE CLEAR TRACE HISTORY MEASURE SETUP PRESET DISPLAY CURSOR CH 1 CH 2 CH 3 CH 4 POWER
COPY IMAGE SAVE SHIFT
ZOOM GO/NO-GO ENHANCED ACQ START/STOP SNAP SHOT
V DIV TIME DIV
Operating Procedure
Setting the Trigger Source
1. Press SIMPLE.
2. Pressing the Source soft key to display the trigger source menu.
3. Press the Ext soft key. (Ch3 and CH4 are not displayed on the DL1620.)
Setting the Trigger Level
4. If the jog shuttle control is not set to Level, press the Level soft key.
On the DL1620, the Range soft key is displayed in this box.
5. Turn the jog shuttle to set the trigger level.
You can use the arrow keys to move between the digits. In addition, pressing
RESET, sets the trigger level to 0 V. Setting the Trigger Slope
6. Press the Slope soft key to select , , or .
Setting the probe attenuation
7. Press the Probe soft key to select 1 : 1 or 10 : 1.
Setting the Range (DL1620 only)
8. Press the Range soft key to select the range.
±1 V or ±10 V (when Probe is set to 1:1), or ±10 V or ±100 V (when Probe is set to 10:1)
Setting the Hold Off
9. Set the hold off time according to the procedures given in 6.4, “Setting the Hold Off Time.”
Explanation
The external signal that is input through the EXT TRIG IN terminal on the rear panel of this instrument can be used to generate triggers.
Note
For details related to the specifications of the EXT TRIG IN terminal, see section 12.1.
Selecting the Trigger Source
Select Ext.
Setting the Trigger Level
Range: ±2 V (for the DL1640/DL1640L)
±1 V (for the DL1620 with the ±1 V range selected) ±10 V (for the DL1620 with the ±10 V range selected) Resolution: 5 mV (for the DL1640/DL1640L)
5 mV (for the DL1620 with the ±1 V range selected) 50 mV (for the DL1620 with the ±10 V range selected)
Setting the Trigger Slope
Select the trigger activation method relative to changes in trigger source level from the following three choices.
: 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.
Setting the Probe Attenuation
When applying a trigger input signal to the EXT TRIG IN terminal (or EXT. terminal on the front panel of the DL1620) via a probe, select an attenuation that matches the probe attenuation.
1 : 1, 10 : 1
Setting the Hold Off
See section 6.4, “Setting the Hold Off Time.”