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The 1969 Catalog recommends using the 556 instead of the 555
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| Input Deflection Factor | . |
| Time Base A | . |
| Time Base B | . |
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The Type 555 Oscilloscope is a dual-beam laboratory instrument for accurate measurements in the DC to 33 MHz range, (3-dB down). Two complete horizontal-deflection systems and two independent vertical amplifiers provide for completely independent deflection of the two beams
Either of two plug-in time base units can control the sweep, over a range of 0.1 µs/cm to 5s/cm, of either or both electron beams. In addition, a continuously-variable calibrated sweep delay allows expansion of a selected portion of the undelayed sweep for precise time measurements. Delayed and undelayed sweeps can be presented simultaneously. The wide-band main amplifiers in the Type 555 are designed to accept Letter-Series and 1-Series Plug-In Unites for a high degree of signal-handling versatility.