SATO M-8400RV manual GAP Input, Backing with Label Label Backing Only 0V to Less than

Section 2. Installation and Configuration

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	(X.XV)
INPUT	(X.XV)

GAP - When setting the “gap” threshold, the voltage shown on the top line of the display must be measured with nothing but the backing 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 = Start Value

1.Insert a label still attached to the backing into the sensor (see page 2-14 for location of the sensors) and close the Label Hold-Down. Record the voltage shown on the top line of the LCD panel. This line should have the message “GAP” on the top line (DIP switch DSW2-2 = OFF). Make sure the label is all the way under the sensor.

2.Strip the label from the backing and insert the backing strip under the sensor and close the Label Hold-Down. Record the voltage shown on the top line of the LCD panel. The voltage ranges measured should be within the following ranges:

Backing with Label	Label Backing Only
2.0V to 3.5V	Less than 1.0V

If the measured values are outside this range, you may have trouble in finding a value that will work properly under all conditions. If this is the case, a higher quality

label material may be needed to get adequate performance.

3.Calculate the starting point voltage using the formula shown above.

4.Use the LINE key to step the counter to the desired setting. The display will increment one step for each time the LINE key is pressed. If the LINE key is held pressed for more than two seconds, it will automatically go into the fast scroll mode. The reading will advance to a setting of 4.9 (the maximum voltage) after which it will automatically wrap and start at “0.0” again. If a value of “0.0” is set, the printer will automatically set the level half way between the two measured voltages each time the printer is powered on with labels loaded.

5.Once the setting is correct, pressing the FEED key will accept the setting and advance to the Calendar Set display.

6.Repeat this procedure using values slightly higher or lower until the optimum performance is obtained. If you cannot find a setting between the high and low readings that gives adequate performance, then the label stock has too much variation in its opacity and a better quality stock should be used.

SATO M-8400RV 9001041 Rev. D Page 2-27