Specifications

24 DC-788 Operation Manual
If the sample size is insufficient to give an accurate unit weight, no unit weight will be displayed, the INSUFF
lamp will be illuminated and you have the following options:
• You can add pieces to the sample (keeping track of how many you add) until the INSUFF lamp goes
out Key in the new total sample quantity and press the PCS key. The scale will compute and
display the unit weight.
• The scale will prompt you to add enough pieces to bring the sample up a weight that allows
calculation of a more accurate unit weight The weight will appear in the Weight display, the word
ADD in the Unit Weight display and the number of pieces to be added in the PCS display
.
• Add exactly the number of pieces requested (the PCS display will go down to 0) and press the PCS
key. The scale will compute and display the unit weight and the INSUFF lamp will go out.
You can ignore or override the INSUFF indicator by pressing the PCS key again without adding more pieces to
the sample. However, it may affect counting accuracy to use a Unit Weight calculated on the basis of an
insufficient sample. If you do press the PCS key again, the scale will compute and display the unit weight based
on the original sample you gave it.
If the RECOMP indicator is lit, the accuracy of the unit weight computation can be improved by adding
approximately double the number of pieces currently on the scale and pressing the
PCS key again. The scale will
flash as it recomputes the unit weight, after which it will display the new Unit Weight.
5.5.2 Unit Weight Operation by Key Entry
Unit weight operation by key entry is accomplished by using the numeric keypad to enter the known value of the
unit weight and then pressing the UNIT WEIGHT key. An example of unit weight operation by key entry is
shown below:
1. With the display in the weighing mode, enter the known unit weight using the keyboard, for example,
200.00.
2. Press UNIT WEIGHT key to enter the unit weight.
3. Place a 2 lb. weight on the scale. The scale displays the quantity for the weight placed on the scale, for
example, the weight display reads 2.000, the unit weight display reads 200.00, and the quantity display
reads 10).
4. Press the CLEAR key to clear the Unit Weight.
5.6 Setting a Lot Number
Lot numbers can be attached to Item Codes when programming item codes into memory. For instructions on
how to set a lot number, see
Section 6.3.
A Lot Number which is not associated with a specific item code can also be set temporarily in the Weighing
Mode. If the DC-788 is connected to an external printer or PC, this Lot Number will appear on labels and
receipts or be output to the PC as part of the data string. For instructions on how to set a temporary Lot Number
not associated with an Item Code, see
Section 5.8.3.7 below.
5.7 Setting a Sequence Number
The scale can maintain and print a sequence number to aid in transaction tracking and auditing. If the sequence
number is set to “0”, no sequence number will be incremented or tracked. Otherwise the sequence number will
automatically increment by 1 each time a label is printed by pressing the + (Plus), - (Minus), or * PRINT keys.