User manual

GDS-2000A Series User Manual
148
Coupling
(Edge, Delay)
DC
DC coupling.
AC
AC coupling. Blocks DC components
from the trigger circuits.
HF reject
High frequency filter above 100kHz
LF reject
Low frequency filter below 5kHz
Reject noise
DC coupling with low sensitivity to
reject noise.
Slope
(Edge, Delay, Rise
& Fall)
Trigger on a rising edge.
Trigger on a falling edge.
Either. (either rising or falling edge)
(Edge, Delay, Rise & Fall trigger type
only)
Trigger Level
(Edge, Delay)
Level
Adjusts the trigger
manually using the
Trigger LEVEL knob.
LEVEL
Set to TTL
1.4V
Sets the trigger level to 1.4V, suitable
for triggering on TTL signals.
Set to ECL -
1.3V
Sets the trigger to -1.3V. This is
suitable for ECL circuits.
Set to 50%
Sets the trigger level to
50% of the waveform
amplitude.
50 %
Holdoff
Holdoff
Sets the holdoff time.
Set to
Minimum
Set the holdoff time to the minimum.
Delay
(Delay)
Time
Sets the delay time (10ns ~ 10s)
between the trigger event and the real
trigger timing.