User Guide

LA-series Operating Manual
4-4 Adjustment of Logic Levels of Channels
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1.Enter into logic levels setting display by pressing
Press to select the Port(blue > indicates the existing Port), then adjust
the voltage using shuttle key .
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F1,F2,F3 adjustable function keys:
Press , it indicates "logic level" is TTL, and default: 1.5V, the voltage of
signal to be captured could be adjusted using shuttle or "V", 〝Λ〞.
Press , it indicates "logic level" is CMOS, and default: 2.5V, the voltage
of signal to be captured could be adjusted using shuttle or "V", 〝Λ〞.
Press , it indicates "logic level" is ECL, and default:-1.3V, the voltage of
signal to be captured could be adjusted using shuttle or "V", 〝Λ〞.
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After completion of setting, exit by pressing F6:Exit, and the settings are
stored. If"logic level" is pressed again, previous setting mode and value are
displayed.
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Press again F1~F3: original standard settings are resumed, allowing to
adjust the logic levels with shuttle. After "logic level" is set, the modes and
settings of channels shall be consistent.