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OD-514B, OD-515B & OD-545B INSTRUCTION MANUAL
LOCK [29]
When LEVEL LOCK push switch is engaged, the triggering level is automatically
maintained within the amplitude of the triggering signal, and stable triggering is made
without requiring level adjustment (although jitter may not be suppressed when in the ALT
mode). This automatic level lock function is effective when the signal amplitude on the
screen or the input voltage of the external triggering signal is within the following range:
OD-514B:
50 Hz to 5 MHz:
5 MHz to 20 MHz:
OD-515B, OD-545B:
50 Hz to 10 MHz:
10 MHz to 40 MHz: 2.0 DIV (0.25 V) or less
November 2000
Figure 12.-Triggering Level selection
1.0 DIV (0.15 V) or less
2.0 DIV (0.25 V) or less
1.0 DIV (0.15 V) or less
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