Trigger - Metrix OX 520B Manual De Funcionamiento

4.5.

Trigger

(17) (21) SOURCE - Trigger source
CH1 CH2 ALT
CH1 CH2 ALT
CH1 CH2 ALT
CH1 CH2 ALT
CH1 CH2 ALT
(16)
(13)
(14)
(18) (20) COUPLING - Coupling of the trigger source
DC AC LFR
DC AC LFR
DC AC LFR
DC AC LFR
DC AC LFR
DC AC LFR
18
Selection by pressing on the % key (17) or & (21):
The indicator corresponding to the selected source is lit.
Synchronization by channel CH1.
LINE EXT
Synchronization by channel CH2.
LINE EXT
Trigger source defined according to the display mode
LINE EXT
Display mode:
CH1 mode
CH2 mode
ALT mode
CHOP mode
ADD (light On)
-CH2 (light On)
Synchronization by the mains power supply frequency.
LINE EXT
The coupling control is disabled. The phase may be adjusted
using the LEVEL control (13).
Synchronization by the external source connected to the BNC
LINE EXT
plug (19).
Automatic trigger of the timebase.
AUTO
Traces visible even if there is no trigger event.
LEVEL Trigger level adjustment potentiometer.
The TRIG light is on when a trigger event is detected (timebase
activated).
Trigger slope
Light On: trigger on rising slope
Light Off: trigger on falling slope
Select by pressing on the % (18) or & (20) key:
The indicator corresponding to the selected source is lit.
DC coupling (0 to 40 MHz).
HFR TVH TVV
AC coupling (10 Hz to 40 MHz).
HFR TVH TVV
Rejection of source signal frequencies < 10 kHz
HFR TVH TVV (facilitates observation of signals with an undesirable 50 Hz
low frequency component, etc.).
Rejection of source signal frequencies > 10 kHz
HFR TVH TVV (facilitates observation of signals with high frequency noise).
Trigger on TV line synchronization pulse.
HFR TVH TVV Sweep speed recommended for examination of a TV line:
0.5 µs to 20 µs/div.
Trigger on TV frame synchronization pulse.
Sweep speed recommended for examination of a TV frame:
HFR TVH TVV
50 µs to 200 µs/div.
Trigger channel:
CH1
CH2
Channel 1 synchronized with CH1
Channel 2 synchronized with CH2
same as ALT mode, since this mode is
forced.
CH1
CH2
Chapter II
20 MHz oscilloscope