Digi DC-688 Operation Manual
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DC-688
When Accuracy Counts
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73353
DC- 688 SERIES OPERATING MANUAL
SECTION INDEX
NUMBER
PAGE
1.0. GENERAL
1.1. Unlocking Procedure and location of span (calibration) switch 2
2.0. DC-688 USER’S TECHNICAL GUIDE 3
2.1. Display & Keyboard Panels 3
2.1.1. Location of Keys 3
2.1.2. Location of Indicator Lamps 3
2.2. Setting up 3
2.3. Indicator Lamps 4
2.4. Key Functions 5
3.0. OPERATION MODE 6
3.1. One Touch Tare 6
3.2. Digital Tare 6
3.3. Unit Weight Entry 6
3.3.1. Unit Weight Entry By Sampling 6
3.3.2. Digital Unit Weight Entry 7
3.3.3. Assign Unit Weight To Preset Key 7
3.4. Clearing Unit Weight 7
3.5. Gross Weight Operation 7
3.6. Counting And Accumulation 8
3.7. Operation Example 8
4.0. MAINTENANCE MODE 9
4.1. Specification List 9-11
4.2. Specification Setting 12-13
4.3. Internal Count 13
4.4. Span Adjustment 14
4.5. Maintenance, Calibration, Test Procedure & Service 15
4.6. Shop Notes
5.0
The DC-688 counting scale offers a practical solution to a full range of precision counting applications. There
is a variety of models available ranging from a weight capacity of 6 lb. through 60 lb.
This manual will provide the user with information necessary to operate and program the DC-688. Included in
this manual are examples, descriptions, specifications, operating instructions and service guide.
QUICK GUIDE
16
17-18
1
1.0. GENERAL
1.1. UNLOCKING PROCEDURE & SPAN SWITCH LOCATION:
NOTE: Turn Scale On Side, Do Not Turn Scale Upside DOWN!
2
g
DC-688 USER’S TECHNICAL GUIDE
2.1. DISPLAY & KEYBOARD PANELS:
2.1.1. LOCATION OF KEYS:
(1) ON/OFF key : Turn display ON/OFF. (7) Net/Gross Key : Switch between Net and Gross
(2) Preset Keys : Recall Unit Weight data. weight display.
(3) Plus Key : Add parts in total accumulation. (8) Re-zero Key : Reset weight display to zero.
(4) Minus Key : Subtract parts in total accumulation. (9) Tare Key : Set or clear tare value.
(5) Enter Key : Clear data in total accumulation. (10) Pieces Key : Enter unit weight by sampling.
(6) Unit Weight Key : Set unit weight after numeric data entry. (11) Numeric Keys : Input Numeric data.
(12) Clear Key : Clear the entry data or unit weight.
2.1.2. LOCATION OF INDICATOR LAMPS:
! Zero Lamp : Light on when zero point is " Insufficient Lamp : Light on when sampling
adjusted and weight is stable. quantity is too small
# Net Lamp : Light on when tare $Recomputin
weight is present Recalculated by pressing PIECES key.
% Gross Lamp : Light on when Gross weight is & Memory Lamp : Light on when accumulated data is
displayed. in memory.
Lamp : Light on when Unit Weight may be
2.2. SETTING UP:
2.2.1. See Page 2 For Unlocking Procedure
2.2.2. Level Adjustment:
a. Place scale on firm and flat base.
b. Level the scale by turning adjusting legs until
air bubble is at the center of the Level Indicator.
Not Level Level
2.2.3. Place the platter onto scale:
a. Place the platter on the scale. Ensure that the platter
is properly aligned.
2.2.4. Power Supply:
a. Connect to power supply. Or install 6 pcs of “D” cell
Battery (DC1.5V)
b. With nothing placed on the platter, depress ON/OFF key.
c. Scale is ready for operation after segment checking.
3
2.3. INDICATOR LAMPS:
LAMP “ON”
Zero When the gross weight is zero.
Tare When tare weight is set.
Gross When [Gross/Net] key is pressed.
Insuff When the net weight is below a specific percentage
of capacity weight.
Recomp When unit weight recomputing is possible.
Memory When quantity is being accumulated or when
memory overflows.
Batt When battery’s power level is low.
4
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