User manual

98
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
DC
Triggers only on AC component.
Triggers on AC + DC component.
Frequency
rejection
LF
HF
Puts a high-pass lter and rejects the frequency below 50kHz.
Puts a low-pass lter and rejects the frequency above 50kHz.
Noise rejection Rejects noise signals.
Trigger level
LEVEL
Using the trigger level knob moves the trigger point up or
down.
Conguring Holdoff
Background The Holdoff function denes the waiting period before VDO-2000A 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
VARIABLE
Short Long