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The S-4's SMA input connector is still present internally, and driven electrically in some of the | The S-4's SMA input connector is still present internally, and driven electrically in some of the | ||
calibration procedures, with the photodiode removed. | calibration procedures, with the photodiode removed. | ||
To accommodate the photo diode, the S-42's case is longer than the S-4's. When inserted, | |||
the S-42 therefore protrudes from the base unit by about two centimeters. | |||
==Pictures== | ==Pictures== |