UNI-T UT 4000 Series Manuel d'utilisateur télécharger pdf (Page 90)

UNI-T

UT4000 User Manual

Trigger

Trigger sensitivity

≤ 1 div

Internal ± 8 div from the centre of the

screen

EXT ± 3V

Trigger level range

EXT/5 ± 15V

Internal ± (0.3 div x V/div) (within ± 4

div from the centre of the

screen)

EXT ± (6% default value + 40mV)

Trigger level accuracy

(Typical) applied on signals

of ≥20ns rise or fall time

EXT/5 ±(6% default value + 200mV)

Pretrigger capability

ormal mode/scanning mode, pretrigger/delayed trigger.

Pretrigger depth is adjustable.

Holdoff range 100ns – 1.5s

Set level to 50% (Typical) Input signal frequency ≥50Hz

Edge Trigger

Edge type Rise, Fall, Rise and Fall

Pulse Trigger

Trigger mode (Greater than, less than, or equal to) positive pulse; (Greater

than, less than, or equal to) negative pulse.

Pulse width range 20ns – 10s

Video Trigger

Internal 2 div peak-to-peak

EXT 400mV

Trigger sensitivity (video

trigger, typical)

EXT/5 2V

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UNI-T UT 4000 Series Manuel d'utilisateur Page 90