User Guide

LA-series Operating Manual
7. Main delays setting key:
F1~F3: F1: 10%, F2: 50%, F3:90%; for F2: 50%, it indicates that, based on
trigger center axle and "T" axle, the benchmark is displayed at 50% of LCD
display, and the percentage could be adjusted by shuttle.
8. Grid ON/OFF key:
Press this key, the vertical scale of time axle’s broke line on LCD could be
controlled for ON/OFF.
9. logic levels key:
Press this key, the logic levels could be changed in combination with F1~F3
function keys. The system default value is:
TTL: 1.5V CMOS: 2.5V ECL: --1.3V
* If selecting and pressing any of F1/F2/F3, logic levels are displayed at lower
part of LCD.
* Port1~Port4 is selected by orientation key, logic levels of every Port
are adjusted and set by shuttle key. (0.1V for every Pat).
* After setting, a single logic level is taken as a high or low reference value.
* Adjustable system range: --4.0V~＋4 . 0 V.
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