6-4
IM DLM3054-03EN
6.2 Triggering Section
Item
Specifications
Trigger mode
Auto, Auto Level, Normal, Single, N Single
The instrument measures in Single mode when you start acquisition by pressing the SINGLE key
or when you start acquisition by pressing the RUN/STOP key when the record length setting only
allows for single acquisition.
Trigger source
CH1 to CH4:
1
Signals received through the input terminals
LINE:
The connected commercial power supply signal (only Edge trigger can be
used)
EXT:
Signals received through the TRIG IN terminal
LOGIC (Bit0 to 7)
2
Signals received through the logic signal input port terminals
Trigger coupling
CH1 to CH4:
1
DC
EXT:
DC
HF rejection
Trigger source bandwidth limit can be specified separately for CH1 to CH4.
1
OFF:
No bandwidth limit
15 kHz:
DC to approx. 15 kHz
20 MHz:
DC to approx. 20 MHz
Noise rejection
Noise rejection can be used (trigger level hysteresis can be selected) for CH1 to CH4
1
separately.
Noise rejection cannot be specified on channels set to TV trigger.
Low (
):
Approx. 0.3 div of hysteresis
Mid (
):
Approx. 0.5 div of hysteresis
High (
):
Approx. 1.0 div of hysteresis
Selectable trigger level range CH1 to CH4:
1
±4 div from the screen center
EXT:
±2 V (±2 V range)
±20 V (±20 V range)
Trigger level resolution
CH1 to CH4:
1
0.01 div (0.1 div for TV triggers)
EXT:
5 mV (±2 V range)
50 mV (±20 V range)
Trigger level accuracy
CH1 to CH4
1
:
±0.04 div
EXT
3
:
±(50 mV + 10% of the trigger level) (±2 V range)
±(500 mV + 10% of the trigger level) (±20 V range)
External trigger probe
attenuation setting
1:1/10:1
Trigger sensitivity
CH1 to CH4:
1
0.6 div
P-P
DC to the maximum bandwidth (noise rejection
)
EXT
3
:
100 mV
P-P
DC to 100 MHz (±2 V range)
1 V
P-P
DC to 100 MHz (±20 V range)
Trigger position
Can be set as a percentage of the display record length in 0.1% steps
Selectable trigger delay
range
–(Time length of the post-trigger section) to +10 s
Selectable hold-off time
range
20 ns to 10 s
