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PN 9001081
Rev. C
SATO M-5900RV Operator and Technical Reference Manual
Page 2-30
Section 2. Installation and Configuration
Sensor Threshold Level
gap [x.xv]
input [x.xv]
Advanced Mode
The M-5900RV printer determines the location of the leading edge of the label by
measuring the difference between light levels when it sees either a label edge or a black
Eye-Mark. This adjustment allows you to manually set the threshold voltage level
between the maximum and minimum light levels. DIP switch DSW2-2 selects the sensor
type. If DSW2-2 is in the OFF position, the setting will be for a See-Thru (or Gap)
sensor and the LCD will display GAP on the top line along with the current setting. If
DSW2-2 is in the ON position, the LCD will display Eye on the top line with its
current setting. If the value entered for the bottom line setting is 0.0V, then the
printer will automatically calculate the setting when the first label is fed after the printer
is powered on or the head is closed. There are some instances where the automatically
calculated value must be adjusted to ensure reliable label feeding, such as when the
backing opacity or the reflectance of the Eye-Mark varies significantly within a roll of
labels or between label rolls. In these instances the value should be set using the
following procedures.
GAP SENSOR: When setting the gap threshold, the voltage shown on the top
line of the display must be measured with nothing but the backing paper in the
sensor and then again with a label still attached to the backing. The formula to
be used for setting the threshold is:
(High Voltage Level + Low Voltage Level) x 0.5 = Input Value
Perform the steps on the following page: