Accurate Technology DigiStop-4 Guide

Digi-Stop™
Installation
& Operation

Manual Part # 800-1070-001 Rev 10-2016 Page 2 of 20
Warranty
Accurate Technology, Inc., warrants this product against defective parts and
workmanship for 1 year commencing from the date of original purchase. Upon
notification of a defect, Accurate Technology, Inc., shall have the option to
repair or replace any defective part. Such services shall be the customer's sole
and exclusive remedy. Expenses incidental to repair, maintenance, or
replacement under warranty, including those for labor and material, shall be
borne by Accurate Technology, Inc. (Including freight or transportation charges
during the first 30 days).
Except as expressly provided in this warranty, Accurate Technology, Inc., does
not make any warranties with respect to the product, either expressed or
implied, including implied warranties of merchantability or fitness for a particular
purpose, except as expressly provided in this agreement.
Accurate Technology, Inc., shall not be liable for any special, incidental, or
consequential damages or for loss, damage or expense directly or indirectly
arising from the customer's use of or inability to use the equipment either
separately or in combination with other equipment, or for personal injury or loss
or destruction of other property, or from any other cause.
To request repair work (either warranty qualified parts or not), contact Accurate
Technology, Inc. directly by phone, fax, or e-mail. A Returned Merchandise
Authorization (RMA) number is required before returning a product for repair.
Accurate Technology, Inc.
+1 828.654.7920 800.233.0580 828.654.8824 (F)
www.proscale.com [email protected]
Manual P/N 800-1070-001 Rev 10-2016.
Copyright

Accurate Technology 2016
SAFETY WARNING
Before installing this product on any machinery
Turn off the machine and disconnect power.
SAFETY WARNING

Accurate Technology Digi-Stop Page 3 of 20
TABLE OF CONTENTS
SECTION 1 GENERAL INFORMATION..................................................................4
Introduction.......................................................................................................4
About This Manual ...........................................................................................4
Specifications...................................................................................................5
Digi-Stop Parts.................................................................................................6
SECTION 2 INSTALLATION .............................................................................7
Mounting the Fence Assembly.........................................................................7
Install Stop Assembly.......................................................................................7
Calibration........................................................................................................8
Changing the Battery .......................................................................................8
The LCD Display..............................................................................................9
Maintenance.....................................................................................................9
SECTION 3 OPERATION...............................................................................10
Readout Keys................................................................................................10
Key Timing..................................................................................................10
On/Off..........................................................................................................10
Units Key.....................................................................................................10
+, DATUM, and -.........................................................................................11
Reverse the Measurement Readings ............................................................11
Readout Lock.................................................................................................12
Readout Resolution........................................................................................12
Measurement Units........................................................................................12
Auto on/off......................................................................................................13
Making Incremental Measurements...............................................................13
Circuit Board Jumpers....................................................................................14
Readout Programming...................................................................................15
Programming Parameters..............................................................................16
Frequently Asked Questions..........................................................................18

Manual Part # 800-1070-001 Rev 10-2016 Page 4 of 20
SECTION 1 GENERAL INFORMATION
Introduction
DigiStop is a Digital Stop & Fence System. It is ideal for use on Miter saws,
Chop Saws, Radial Arm Saws or any other application where a moveable stop
along a fixed back fence is desired. It has been designed using high quality
extruded and machined parts to provide the best accuracy and repeatability.
DigiStop is the consumer version of Accurate Technology’s commercial Stop &
Fence System: ProStop
About This Manual
This manual includes installation and operation information for DigiStop
systems using a DIGI Readout with operating firmware (F/W) of d 2.1xx and
higher.
(The Firmware version is displayed on power-up, i.e. P2.100)

Accurate Technology Digi-Stop Page 5 of 20
Specifications
Measuring Range1:
DigiStop4 up to 50 inches (1.3 meters)
DigiStop-8 up to 94 inches (2.4 meters)
DigiStop-10 up to 116 inches (2.9 meters)
Accuracy2: +/- 0.015 inches (0.4 mm)
Resolution .1inch .1mm or
.01inch .01mm or
.001inch .01mm or
1/16inch 1/32inch 1/64 inch
Repeatability: .001in or .01mm
Display Range: ± 999.999 in; ± 399 63/64 in, ± 9999.99 mm;
Operating Temp: 32 to 120

F 0 to 51

C
Max. Slew Rate: 40 inches/sec. (1m/sec)
Power: 1 CR123 3V Lithium battery
(or equivalent)
1MEASUREMENT range is approximately 4-6 inches shorter than the
PHYSICAL length of the aluminum fence extrusion.
2Maximum observed error over the entire measuring range.

Manual Part # 800-1070-001 Rev 10-2016 Page 6 of 20
Digi-Stop Parts
Each Digi-Stop is shipped in one or two packages (depending on the model).
The first contains the Fence extrusion with the Scale attached.
The second package (if necessary) contains the Digital Stop and installation
hardware.
Pictured below are parts that will be referred to throughout this manual.
Scale
Encoder
Guide Clip
Stop Assembly
Stop
Digital Readout

Accurate Technology Digi-Stop Page 7 of 20
SECTION 2 INSTALLATION
Mounting the Fence Assembly
1. Align the Fence Assembly adjacent to the saw
(Scale is to the rear of the fence).
2. Mark a line on the table top, along the front edge of
the Fence.
3. Remove the Fence assembly and mark a second line 7/8 inch (22mm)
behind the first line (this is the centerline of the Fence).
4. Drill mounting holes (at least 2) into the tabletop along the centerline of the
Fence.
5. Insert the supplied 10mm bolts
through the table from the top.
Install the supplied hex nuts onto
the bolts 1 or 2 threads deep at this
time.
6. Slide the Fence, end first, back into
place capturing the bolt heads in the
bottom T-slot of the Fence
Assembly. After the Fence is in
place and aligned to the saw,
tighten all nuts.
Install Stop Assembly
1. Carefully slide the encoder onto the Scale.
2. Loosen the locking knob and slide the Stop
assembly into the fence extrusion.
3. Position the encoder and Stop together and slide the
encoder under the Guide Clip so the post on the
encoder is captured in the slot of the Guide Clip, as
shown
4. Attach the readout to the aluminum block on the
stop using the extension bracket. Plug the encoder into the readout .
5. Move the stop assembly left to right and note if the readings increase or
decrease. Depending upon the installation (left or right infeed), it may be
necessary to reverse the reading direction.
See Section 3: Reverse Readings

Manual Part # 800-1070-001 Rev 10-2016 Page 8 of 20
Calibration
1. Check to be sure installation of all parts is complete, all fasteners are
secure and the Encoder is plugged into the Readout.
2. Cut a small part (approximately 8 inches) using the stop. DO NOT MOVE
THE STOP UNTIL THIS PROCEDURE IS COMPLETED.
3. Measure the length of the part with the most precise measuring tool you
have available (preferably digital calipers).
4. Press the Datum key to ‘zero’ the readout, then press and hold the +
(PLUS) key to change the reading until the length you just measured is
shown (The longer the + key is held down, the faster the readout will scroll).
This adjustment should be made in a decimal (inches or mm) mode for the
best accuracy.
5. When the correct reading is reached, lock the readout if desired. This
prevents accidentally re-zeroing during normal use.
See Section 3: Readout Lock Mode
Changing the Battery
A low battery indicator will appear in the lower left corner of the LCD.
When battery voltage drops below approximately 2.6V the readout will
turn itself off until the batteries are replaced.
To replace the battery remove the screws in the upper right and lower left
corners. Pull the cover off. Remove the old battery and install a new CR123
(or equivalent) Lithium battery. Replace the cover and tighten the screws.

Accurate Technology Digi-Stop Page 9 of 20
The LCD Display
The above figure illustrates all the segments available on the LCD.
(Not all segments are used on Digi-Stop Systems)
Pressing and holding the ON/OFF and UNITS key for 10 seconds with power off
will perform a full segment LCD test, display the current firmware version, and
RESET ALL PROGRAMMING PARAMETERS TO FACTORY DEFAULTS.
Maintenance
The fence extrusion should be cleaned of debris periodically. Do not use any
liquid lubricants on the scale, as this may impede the encoder's ability to
operate properly and attract other contaminants to the scale.
The readout should be cleaned periodically with compressed air to remove any
dust on the lens and keys. All fasteners should occasionally be checked for
tightness.

Manual Part # 800-1070-001 Rev 10-2016 Page 10 of 20
SECTION 3 OPERATION
Readout Keys
Key Timing
The keys pictured above, are found on all Digi-Fence Readouts.
Some of them have multiple functions!
Timing, which is how long a key is depressed, and the combination of the keys
pressed is important. This manual uses the term ‘”momentarily” to describe a
key press of shorter than 1 second. Whereas the term “press and hold” is used
to describe a key press of longer than 1.5 seconds. As an example; when using
a PC keyboard to type a capital letter you would “press and hold”the SHIFT
key and “momentarily depress the LETTER key.
In addition most of the key “functions” are executed on RELEASE, not depress.
This is important since some of the same keys execute different functions
based on how long they are pressed and when they are released. These key
operations, once tried will quickly become intuitive.
On/Off
Momentarily pressing the ON/OFF key will cause the readout to turn on or off.
The Firmware Version of the readout is displayed on power-up when the
ON/OFF key is used. While the readout is on, if it does not detect movement or
a keypress for 15 minutes, it will automatically turn itself off to conserve battery
life. While it is off if it is moved as little as .002in (.05mm), or the ON/OFF
button is pressed, the readout will automatically turn itself back on with no loss
of position.
Units Key
The readout can display position information in decimal inches, fractions, or
millimeters. To change the current display mode, momentarily press the Units
key. With each key press the readout will cycle through decimal inches, When
the readout is in 1/16 or 1/32 inch fraction mode, a series of ‘bars’ in the upper
right corner of the LCD, each representing 1/64th of an inch, may appear. For
example; the LCD pictured below left is set to display 32nds of an inch. As you
can see there is one ‘bar’ in the upper right corner of the LCD indicating an

Accurate Technology Digi-Stop Page 11 of 20
additional 1/64 of an inch measurement making the true, full resolution
measurement 2 13/64ths.
Some users find this resolution unnecessary and prefer the 16ths or 32nds
mode instead. For better resolution, switch to 64ths mode. For the best
resolution switch to a decimal mode –inches or millimeters..
When the measurement is greater than 99 63/64 inches, a +100 and/or +200
will illuminate in the upper right portion of the display to indicate this amount
must be added to the displayed reading. For example; the LCD pictured above
right is indicating a measurement of 151 39/64 inches. If the measurement was
351 39/64 inches, the +100 and +200 will be illuminated on the display.
+, DATUM, and -
The + (plus), DATUM and –(minus) keys are used to change the currently
displayed position to a different value. The DATUM key forces the readout to a
user programmed value. Programming Parameter Pr1 (default is zero 0.00)
Momentarily depressing the + key increments the current reading by one unit
(fractions, decimal or mm depending on the current mode selected by the
UNITS key) of measurement. Momentarily depressing the –key decrements
the current reading by one unit. Pressing and holding the + or –keys will cause
the displayed reading to change continuously. Holding down the key will cause
the amount of change to speed up. This allows for quick adjustments over a
range of large values.
NOTE: While the DATUM key can be used to simply “zero” the currently
displayed reading, it can also be programmed to force the readout to a preset
value. This can be zero, or any other displayable value.
See Section 3: Readout Programming, Programming Parameter Pr1.
Reverse the Measurement Readings
Reverse the readings means changing the direction of measurement produced
by movement. If the Digi-Fence decrements (reduces or goes negative) when it
should be incrementing (increasing or going positive), the readout will need to
be re-programmed for your installation.
See Section 3: Readout Programming, Programming Parameter Pr2.

Manual Part # 800-1070-001 Rev 10-2016 Page 12 of 20
Readout Lock
To activate the Lock function Press and hold the ON/OFF key and then
momentarily press the UNITS key. The word LOCK will appear in the upper left
corner of the readout. When LOCK is displayed, the +, DATUM and –keys
become inactive to prevent accidental changes of the (calibrated) current
displayed position. To de-activate the Lock function, press and hold the ON/OFF
key and then momentarily press the UNITS key.
NOTE: The Lock function can also be enabled/disabled through programming.
This allows a more permanent Lock function since programming can be
disabled with a hardware jumper inside the readout thus preventing any front
panel programming changes.
See Section 3: Readout Programming, Programming Parameter Pr3.
Readout Resolution
The Digital readout can be configured to display measurements in any of three
different resolutions.
1. Low–the resolution is .1in or .1mm.
2. Normal–the resolution is: .01in or .01mm.
3. High–the resolution is: .001in or .01mm
The display of fractions remains the same for all settings: 1/16, 1/32 & 1/64
See Section 3: Readout Programming, Programming Parameter Pr4.
Measurement Units
The measurement units displayed on the Readout are user configurable. The
table below provides a matrix for selecting the measurement units that may be
displayed when pressing the UNITS key.
See Section 3: Readout Programming, Programming Parameter Pr11
Programming Parameter Pr 11 Value
Measurement Units Displayed
0
All inch units, and millimeters
1
Millimeters only
2
Decimal inches and millimeters
3
Decimal inches and centimeters
4
All inch units, and centimeters
5
Centimeters only
6
Decimal inches only

Accurate Technology Digi-Stop Page 13 of 20
Auto on/off
To prolong battery life, the Readout has a built-in function that turns off the
Readout after a period of no movement or key activity. The Auto On/Off
function is programmable from 0 (always on), to 240 (minutes) before entering
sleep mode.
Press the ON/OFF key or move the measurement system to wake up the
Readout. Any key press or system motion while the Readout is awake restarts
the Auto On/Off timer.
See Section 3: Readout Programming, Programming Parameter Pr12.
Making Incremental Measurements
The Digital Readout has two measurement modes, or indexes. One is referred
to as ABS or Absolute, and the other as INC, or Incremental.The absolute
measurement mode allows the operator to read the current position of the Stop
referenced from a fixed or known position such as the saw blade.
The incremental mode allows the operator to make relative distance
measurements from one arbitrary point to another. The absolute position of
the Stop is not lost when using the incremental mode.
Absolute The readout automatically enters ABS mode when power is first
applied. This is indicated by the ABS symbol in the upper left corner of the
display. While in the ABS mode, all fence positions are related to the current
ABS, or absolute system reference point, ie the blade.
Incremental To enter the INC mode, press and hold the UNITS key for
approximately 3 seconds. The INC symbol will appear in the upper left corner
of the display. When the INC mode is entered the readout will display zero (0)
or the last offset if one was entered, and may be changed by using the +or -
keys to provide a different offset. Moving the Stop in either direction will display
the distance moved from the initial INC starting point (plus any offset). To
complete another incremental measurement from the new position,
momentarily press the UNITS key. The readout will again change to 0 (or the
previously programmed offset). To return to the ABS mode, press and hold the
UNITS key for approximately 3 seconds.
NOTES: When the readout is in incremental measuring mode the UNITS key no
longer functions to change the measurement units displayed.
The absolute position of the Stop is not lost when using the incremental mode.
When the readout is switched back to the absolute mode the readout reflects
the current Stop position relative to your original calibrated setting.

Manual Part # 800-1070-001 Rev 10-2016 Page 14 of 20
Circuit Board Jumpers
The Digi-Stop readout has several user configurable jumpers consisting of
three pins and a ‘shorting block or jumper’.
The center of these three pins is ‘Common’. One end pin is labeled Aand the
other end pin is labeled B.
JP1 FACTORY USE ONLY
JP2 Programming Lockout
Position A, Front Panel Programming is ENABLED
Position B, Front Panel Programming is DISABLED
JP1
JP2

Accurate Technology Digi-Stop Page 15 of 20
Readout Programming
Several functions of the Digi-Stop Readout are user programmable. The
following describes what features and functions are available and how to
change the factory defaults to customize your Digi-Fence system..
Review KEY TIMING described earlier before proceeding.
To enter Programming Mode:
1. Press and hold the UNITS key then momentarily press the DATUM key.
2. The LCD will briefly display: PG on (Programming On), then
Pr 1, (indicating Programming Parameter #1)
3. Release the UNITS key
4. The value stored in Pr1 is displayed.
Once in the Programming Mode:
Moving up parameter list - Momentarily press the UNITS key to advance through
the Programming Parameter list, first displaying the Programming Parameter
number then the currently programmed value.
Moving down parameter list - Press and hold the ON/OFF key and momentarily
press the UNITS key to move backward through the Programming list.
Increase parameter value - Momentarily press the PLUS (+) key while displaying
a Programming Parameter Value to increase the setting.
Decrease parameter value - Momentarily press the MINUS (-) key while
displaying a Programming Parameter Value to decrease the setting.
Reset parameter value to default setting - Momentarily press the DATUM key
while displaying a Programming Parameter Value to reset the parameter to the
factory default value.
Exit programming mode - Press and hold the UNITS key. Momentarily depress
the DATUM key. The LCD will briefly display: PG oFF (Programming Off),
then return to normal operation. NOTE: The system will automatically exit
programming mode after 60 seconds if no key activity is detected.
Momentarily press
Press & Hold

Manual Part # 800-1070-001 Rev 10-2016 Page 16 of 20
Programming Parameters
The readout programming parameters are listed below.
Values in [ ] are the available range of values that can be entered for that
parameter. Factory defaults are shown in Bold Red.
NOTE: Programming parameters are not sequentially numbered due to firmware
differences between measurement systems and the provision for future
enhancements, functions and custom features.
Some Parameters are not applicable to all Digi systems.
Pr 1 –Datum Key [0to + 999.999in] or [0to +9999.99mm]
The programmed value that will be recalled whenever the DATUM key is
pressed during normal operation.
Default = 0.00
Pr 2 –Reverse Readings [0or 1]
This parameter controls the direction of travel (positive vs. negative) when the
encoder is moved.
Default = 0
Pr 3 –Key Lockout [0or 1]
This parameter controls the operation of the +, -and DATUM keys.
If enabled, (set to 1), these keys will not function and the LOCK symbol will
appear on the display. This prevents accidental changes when pressing these
keys during normal operation.
Default = 0
Pr 4 –Readout Resolution [1, 2, 3or 4]
This parameter sets the number of places to the right of the decimal point on
the readout.
A value of 1 –Low - will display x.x.
A value of 2–Normal -will display x.xx
A value of 3 –High - will display x.xxx
Default = 2
NOTE:
Millimeters have a maximum of 2 places (even if parameter is set to 3.)
This setting has no effect when displaying fractions.
Pr 5 –Wake Up Movement [0.10 to 10mm]
This parameter sets the amount of Stop movement required to automatically
wake up the Readout (when it is turned off or in sleep mode).
Default Value = 0.10mm

Accurate Technology Digi-Stop Page 17 of 20
Pr11 –Readout Measurement Units ······································· [0to 6]
This parameter controls the type of measuring units the Readout displays when
the UNITS key is pressed. The table below illustrates the possible combinations
of measuring units that will be displayed by changing this parameter.
Default Value = 0
Pr12 –Readout Auto-Off Time ············································· [0 to 240]
This parameter changes the amount of time before the display turns off to
conserve battery power. The value is the number of minutes of idle operation
(no movement or key presses) before the display turns off. When this
parameter is enabled (0), pressing the ON/OFF key or movement of the
encoder or system will wake up the Readout.
A value of ‘0’ disables the Auto Off feature (the Readout is always on).
Default Value = 15 (minutes)
Pr13 –Linear Compensation ································ [0.00001 to 9.99999]
This parameter invokes a linear multiplier correction in the Readout that is
applied to the actual measurement prior to any offsets. This adjusted
measurement is then displayed on the Readout. This is useful, for instance, if
you would like to display half, double, or other values that can be achieved by
multiplying the actual measurement by the value of the parameter setting.
Use care when enabling this function. It will force the readout to display a value
different from the actual measurement or position.
This Programming Parameter does not apply to all Digi Systems and products.
DO NOT change this value unless instructed to do so by a factory technician!
Default Value = 1.00000
Pr 11 Setting
Displayable Units
0
All inch units and millimeters
1
Millimeters only
2
Decimal inches and millimeters
3
Decimal inches and centimeters
4
All inch units and centimeters
5
Centimeters only
6
Decimal inches only

Manual Part # 800-1070-001 Rev 10-2016 Page 18 of 20
Frequently Asked Questions
What F/W (Firmware) version do I have?
The readout will display d 2.xxx on power up.
This is the firmware version of your readout .
The readings are “backwards”?
You can change reading direction of the Digi-Fence by changing the value of
Programming Parameter Pr 2.
The keys don’t seem to do what they are supposed to do.
Timing, which is how long a key is depressed, and the combination of the keys
pressed is important. This manual uses the term ‘”momentarily” to describe a
key press of shorter than 1 second. Whereas the term “press and hold” is used
to describe a key press of longer than 1.5 seconds. As an example; when using
a PC keyboard to type a capital letter you would “press and hold” the SHIFT
key and “momentarily depress the LETTER key. In addition most of the key
“functions” are executed on RELEASE, not press. This is important since some
of the same keys execute different functions based on how long they are
pressed and when they are released. These key operations, once tried will
quickly become intuitive.
What does no Enc mean?
If the encoder cable is unplugged from the readout , no Enc will appear on the
display. To clear: Be sure the encoder is on the scale and plugged into the
readout.
What does b FAIL mean?
When the readout displays this message it means the battery voltage has
dropped to a level where reliable operation is no longer possible. Install new
batteries to clear this message.
What does P FAIL mean?
When the readout displays this message it means the battery voltage has
dropped to a level where reliable programming is not possible. Install new
batteries to clear this message.

Accurate Technology Digi-Stop Page 19 of 20

Manual Part # 800-1070-001 Rev 10-2016 Page 20 of 20
Thank you for choosing an
AMERICAN MADE PRODUCT
Accurate Technology, Inc.
270 Rutledge Rd. Unit E
Fletcher, NC 28732 USA
828.654.7920
Please register your product at:
http://www.proscale.com/registration.htm
This manual is available online at:
www.proscale.com
Manual P/N 800-1070-001 Rev 10-2016.
Copyright

Accurate Technology 2016