GW Instek GDS-1062A - Configuring Holdoff; Configuring the Edge Trigger

CONFIGURATION
77
line
1~263 for NTSC, 1~313 for PAL/SECAM
Pulse condition
(pulse trigger)
Sets the pulse width (20ns ~ 10s) and the triggering
condition.
>
Longer than
=
Equal to
<
Shorter than ≠ Not equal to
Trigger slope
Triggers on the rising edge.
Triggers on the falling edge.
Trigger coupling AC
Triggers only on AC component.
DC
Triggers on AC+DC component.
Frequency
rejection
LF
Puts a high-pass filter and rejects the
frequency below 50kHz.
HF
Puts a low-pass filter and rejects the
frequency above 50kHz.
Noise rejection
Rejects noise signals.
Trigger level
LEVE L
Using the trigger level knob moves the
trigger point up or down.
Configuring Holdoff
Background
The Holdoff function defines the waiting period
before GDS-1000A starts triggering again after the
trigger point. The holdoff function is especially
useful for waveforms with two or more repetitive
frequencies or periods that can be triggered.
Panel operation
1. Press the Trigger menu key
twice.
MENU MENU
2. To set the Holdoff time, use
the Variable knob. The
resolution depends on the
horizontal scale.
Range
40ns~2.5s
GDS-1000A Series User Manual
78
Pressing Set to Minimum
sets the Holdoff time to the
minimum, 40ns.
Note: The holdoff function is automatically
disabled when the waveform update mode is
in Roll mode.
Configuring the edge trigger
Procedure
1. Press the Trigger menu key.
MENU
2. Press Type repeatedly to
select edge trigger.
3. Press Source repeatedly to
select the trigger source.
Range
Channel 1, 2, Line, Ext
4. Press Mode repeatedly to
select the Auto or Normal
trigger mode. To select the
single trigger mode, press
the Single key.
SINGLE
Range
Auto, Normal
5. Press Slope/coupling to enter
into the trigger slope and
coupling selection menu.
6. Press Slope repeatedly to
select the trigger slope,
rising or falling edge.
Range
Rising edge, falling edge