Starrett FORM 966 User manual

Trust Is In The Name User Manual
FORM 966

2 FORM 966
READ THIS MANUAL BEFORE USING THE INSTRUMENT
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DI UTILIZZARE QUESTO STRUMENTO
01/18 Q

2900 ELECTRONIC INDICATOR
USER MANUAL

4 FORM 966
TABLE OF CONTENTS
Guidelines for Indicator Care 6
Operating Instructions 6
Indicator Components, Dimensions and Layout 7
Button Functions 8
2900 Indicator Models, Feature Level and Resolution 9
Resolution Selection* 9
Setting the Preset Function 10
Setting MIN/MAX Limits (Go/No Go) 10
Displaying MIN/MAX/TIR Values** 12
Lock Mode* 12
Data Output Connection 13
Battery Installation 13
Appendix A: Technical Specifications 14
Appendix B: Serial Output Connector 14
*Available with Standard and Advanced Features
**Available only with Advanced Features

FORM 966 5
2900 ELECTRONIC INDICATOR
THIS IS A STARRETT USER GUIDE FOR THE
2900 ELECTRONIC INDICATOR.
ALL SPECIFICATIONS IN THIS DOCUMENT ARE CORRECT
AT TIME OF PRODUCTION AND ARE SUBJECT TO CHANGE.
PLEASE CONTACT STARRETT FOR FURTHER INFORMATION.

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GUIDELINES FOR INDICATOR CARE
1. Avoid dropping the indicator.
2. Avoid extreme temperatures and direct sunlight for extended periods.
3. Avoid contact with liquids and dusty environments.
4. Avoid shocks to the contact point and spindle.
5. Do not apply radial force to the spindle.
6. If the indicator is stem-mounted, protect it from being hit or bumped to
avoid stem/case mechanical alignment damage.
7. Do not over-tighten the mounting mechanism. If possible, use clamp
mounting rather than set screws to prevent damage to the spindle.
8. Clean the spindle frequently with a dry cloth or a chamois to prevent
sluggish or sticky movement. Isopropyl alcohol may be used to remove
gummy deposits on metallic parts. Do not apply lubricant to the spindle
or use solvents.
9. Do not disassemble or modify the indicator.
OPERATING INSTRUCTIONS
1. Install batteries (included with indicator).
2. Lightly clean the contact point.
3. Secure the indicator to an appropriate holding device.
4. Press the ON/OFF button to turn the indicator on.
5. Select the unit of measure (inch or millimeter) by pressing the IN/mm
button. (Not applicable to metric indicator models).
6. Place the indicator perpendicular to the reference surface being measured.
Allow enough movement to be able to take a higher or lower measurement.
7. Press the ZERO button to reset the display.
8. Lift the spindle, remove the reference surface and place the work piece
to be measured. Put the spindle carefully on to its surface. The measured
value will be shown on the LCD.
9. Press and hold the ON/OFF button to turn the indicator off. If left
unattended, it will turn off automatically in 30 minutes.

FORM 966 7
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Stem Cap
Data Cable
Spindle
Bellows
Spindle
Contact Point
Stem
Data Output Cover
Battery Drawer
Back Lug
1-21/32"
(42.2mm)
1/4"
(6.5mm)
1/4" (6.5mm)
2-5/64" (53mm)
3/8"
(9.5mm)
INDICATOR COMPONENTS, DIMENSIONS AND LAYOUT

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6 & 12
5
4 & 8
1 & 11
3, 9 & 10
2 & 7
BUTTON FUNCTIONS
LOCK, RES, LIMITS and PRESET,
printed in yellow, are used in
conjunction with the SHIFT button.
To engage press the SHIFT button
first. The SET icon will appear on
the bottom left corner. Then press
the button for the desired function.
1 ON/OFF Power button. Press and hold for 4 seconds.
2 ± Plus/Minus sets the direction of the reading
3 ZERO Half a second after releasing the ZERO button the display will
zero. Do not move from zero during that half second.
4 IN/mm Toggles the display between English or Metric modes.
5 SHIFT/SET
Dual function. To enable the Lock, Resolution Selection, Preset or
Limits (Go/No Go) function. When enabled, SET icon will show in
the bottom left corner of the display.
6 LOCK
Prevents operator modification to the Settings. Press SHIFT/SET
button, then press and hold the LOCK button (after setting the
other functions).
7 RES
Resolution. First select the Unit (English/Metric). Press SHIFT/SET
then the RES (Plus/Minus) buttons. Press the RES button to scroll
through choices and press the SHIFT/SET to make the selection.
8 LIMITS Sets the Min and Max values for the Go/No Go function.
9 PRESET Press the SHIFT/SET button then press the PRESET button to
enable the PRESET function.
10 ZERO/ABS Dual Function. Press and hold for two seconds to activate the ABS
mode or to exit the ABS mode. To zero the display, see #3 above.
11 HOLD Press HOLD momentarily to capture a reading.The captured reading
will flash on and off. To disable, press the HOLD button again.
12 MIN/MAX/TIR
Displays the minimum or maximum values captured during
operation. The TIR function displays the difference between the
captured readings.

FORM 966 9
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RESOLUTION SELECTION*
Enter the resolution SET mode by pressing the
SHIFT/SET button followed by the RES button. The
choices are displayed sequentially from highest to
lowest. The round off accommodates the range of
values in the table (right).
After selecting the desired resolution, press the SET/SHIFT button to exit the resolution
mode. When the mode is entered, the resolution selection is presented in the units
previously set (English or metric). Press IN/mm to toggle units selection, as required.
2900 INDICATOR MODELS, FEATURE LEVEL, RESOLUTION AND RANGE
CAT. NO. EDP DESCRIPTION RESOLUTION RANGE
2900-1 09980 Basic English/Metric .00005"/.001mm .5"/12mm
2900-2 09981 Basic English/Metric .0001"/.001mm .5"/12mm
2900-4 09983 Standard English/Metric
with Selectable Resolution
.0005"/.0001"/.00005"
.01mm /.001mm .5"/12mm
2900-6 09985 Advanced English/Metric
with Selectable Resolution
.0005"/.0001"/.00005"
.01mm /.001mm .5"/12mm
2900-1M 09986 Basic Metric .001mm 12mm
2900-4M 09988 Standard Metric with
Selectable Resolution .01mm /.001mm 12mm
2900-6M 09990 Advanced Metric with
Selectable Resolution .01mm /.001mm 12mm
Press
SHIFT / SET
BUTTON Then
RES
Button to enter Resolution Mode
Press
RES
Button
to cycle through the available resolutions
Press
SHIFT / SET
BUTTON to pick the resolution and exit resolution mode
*Available with Standard and Advanced Features
ROUND OFF CONDITION ENGLISH INCH MODE METRIC MM MODE
Round Off Enabled 000.00005 0000.001
Round Off Disabled 000.0001 0000.001
Round Off Enabled 000.0005 0000.01
Round Off Disabled 000.001 0000.01

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SETTING THE PRESET FUNCTION*
1. To set a value, press and hold the ZERO/
ABS button until the ABS icon appears in
the upper right corner of the LCD (right).
The values can be SET to: ±99.99999"
or ±9999.999mm.
2. Press the SHIFT/SET followed by the
PRESET button. The SET and PRESET
icons will appear in the lower left corner
of the LCD. The PRESET icon will be
flashing (middle right).
3. To move from the PRESET icon to a digit,
press the SHIFT/SET button. A flashing
digit indicates that it is ready to be SET
(lower right). Press the PRESET button to
increment the value. To set, press the SHIFT/SET button.
4. To move to the next digit press the SHIFT/SET button and repeat step 3.
Repeat steps 2 and 3 until all the digits are SET.
5. To set a negative value, press PRESET when the plus/minus sign icon is flashing.
6. To exit the PRESET function, press the PRESET button when the PRESET
icon is flashing. The SET value will remain displayed.
7. Press and hold the ZERO/ABS button to return to the active measuring mode.
SETTINGMIN/MAX LIMITS(GO/NO GO FUNCTION)**
1. Select the units to be displayed.
2. Press the SHIFT/SET button. The SET icon will
appear in the lower left corner (right).
3. Press the LIMITS button. The MIN LIMIT icon
will appear in the upper middle of the display.
Press
SHIFT / SET
BUTTON Then
PRESET
Button
to enter Preset Mode
Press
SHIFT / SET
BUTTON to cycle from digit to digit and back to preset
Press
PRESET
Button
to increment the value of the digit or the plus/minus sign
*Available with Standard and Advanced Features

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4. Press the SHIFT/SET button. The LIMIT icon will flash on/off.
5. Adjust the spindle to the desired minimum value.
6. Press the SHIFT/SET button to capture the minimum value. The LIMIT
icon will stop flashing.
7. Press the LIMITS button. The MAX LIMIT icon
will appear on the LCD (right).
8. Press the SHIFT/SET button. The LIMIT icon
will flash on/off.
9. Adjust the spindle to the desired maximum value.
10. Press the SHIFT/SET button to capture the maximum value. The LIMIT
icon will stop flashing.
11. Press the LIMITS button. The LIMIT and the SET icon will remain on. The
MAX and MIN icons will stay off as long as the reading is within the set
limits. If the measurement is beyond the set limits the display will flash
and the MIN or MAX LIMIT icon will indicate the direction the limit have
been exceeded. To exit Press the LIMITS button.
Press
SHIFT / SET
BUTTON Then
LIMITS
Button
to enter Min Limit Mode
Press
SHIFT / SET
BUTTON The LIMIT icon will flash on/off
Press
SHIFT / SET
BUTTON
to increment the value of the digit or
the plus/minus sign. 
Then press
SHIFT / SET
BUTTON
To capture the minimum value.
The LIMIT icon will stop flashing.
Press
LIMITS
Button
The MAX icon will appear.
Press
SHIFT / SET
BUTTON The LIMIT icon will flash on/off.
Press
SHIFT / SET
BUTTON
Adjust the spindle to the value that
you want. 
Then press
SHIFT / SET
BUTTON
To capture the maximum limit.
The LIMIT icon will stop flashing.
Press
LIMITS
Button
The Indicator is now set up with a maximum and
minimum limit range
Press
LIMITS
Button
To exit the LIMIT mode.
**Available with Advanced Features

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DISPLAYING MIN/MAX/TIR VALUES**
(TIR is "Total Indicator Reading")
Pressing the MIN/MAX/TIR button displays the MIN/
MAX/TIR values most recently measured.
Press once for MIN (above right), twice for MAX
(middle right) and three times for TIR (lower right).
Press a fourth time to exit. The MIN/MAX/TIR values
may be zeroed by pressing the SHIFT/SET button.
LOCK MODE*
The Lock Mode prevents intended or unintended operator modifications to
the settings.
Before activating the Lock function, preset other functions to the desired
settings: Plus/Minus for spindle direction, ABS mode, PRESET Reading,
Units, Limits setting, and MIN/MAX/TIR settings. These values are stored in
memory. Then, lock these settings as follows:
1. Press the SHIFT/SET then press and hold the LOCK button.
2. The Lock icon will turn on and stay on (see right).
Once the lock mode has been activated, the
operator will not be able to change ABS/Normal
Mode, Limits, Units, PRESET, or MAX/MIN/TIR, but
will have access to the zero function and be able to view MIN/MAX/TIR readings.
3. To deactivate the lock mode repeat the process used to enter the mode. Press
the SHIFT/SET then the LOCK buttons. The lock icon will turn off and stay off.
MIN/MAX/TIR
Button
*Available with Standard and Advanced Features
Press
SHIFT / SET
BUTTON Then
LOCK
Button to activate the Lock function
Press
SHIFT / SET
BUTTON Then
LOCK
Button to deactivate the Lock function
*Available with Standard and Advanced Features

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DATA OUTPUT CONNECTION
To connect an output cable, remove the two small Phillips screws as shown
below. Then, remove the output port cover.
Plug in the cable and secure it with the same screws that held the cover.
Orient the data cable plug as shown below. When not using output, replace
the data cover to protect the electronics
BATTERY REPLACEMENT
Remove the two Phillips screws that secure the battery drawer as shown below.
Remove the battery drawer and discard the old batteries.
Place two new CR2032 batteries into the tray with the positive (+) side facing up. Slide
the tray carefully into the indicator and secure with the two screws.
To order CR2032 batteries, specify: PT99492. EDP 65650

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APPENDIX A: TECHNICAL SPECIFICATIONS
POWER REQUIREMENTS AND CURRENT CONSUMPTION
Battery 2 CR2032 Lithium Coin Cells
Capacity 240 mAh
Automatic Sleep Time 30 minutes of non-use
SPC SERIAL OUTPUT
18 ASCII Characters
1 Space character
2 Status characters indicating the operating mode
BLANK Normal mode
OL Displacement outside Lower Limit
OU Displacement is outside the Upper Limit
MN Displacement is minimum peak displacement stored
MX Displacement is minimum peak displacement stored
TR Displacement is the T.I.R. stored
LL Displacement is the lower or minimum limit setting
LU Displacement is the upper or maximum limit setting
HL Displacement is a held displacement
1 Sign character (minus but no plus)
1 Space character (IN mode only)
6 Digits
1 Decimal point
2 Spaces
1 Character strings to indicate units "IN" or "mm"
1 Carriage return
1 Line feed
COMMUNICATION PROTOCOL
Baud Rate 4,800
Data Bits 8
Parity None
Stop Bits 2
Flow Control None
Data Request and Response Timing
Receive High to Low Momentary
Response Time Delay 120 ms
Transmit Time 45 ms

FORM 966 15
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APPENDIX A: TECHNICAL SPECIFICATIONS
Pin 1 GND – Signal return
Pin 1
Pin 2
Pin 3
Pin 4
Pin 2 Serial Receive Data Input (RX/RQST)
Pin 3 Serial Transmit Data Output (TX/DATA)
Pin 4
Remote Zero – Special Order Only
State Change High to Low
SERIAL INPUT VOLTAGE LEVEL SPECIFICATION
Logic "0" Vin < 1.30 Volts
Logic "1" Vin > 1.98 Volts
SERIAL OUTPUT VOLTAGE LEVEL SPECIFICATION
MINIMUM MAXIMUM
Low Level Vss Vss +0.25 @ -1.5mA Load
High Level Vdd –0.25 @ 1.25 mA Load Vdd
Note: Vss = 0 Volts, Vdd = 2.7 to 3.6 Volts
ENVIRONMENTAL CONSIDERATION
Temperature 10-30 °C,
Humidity 30-85%RH (no condensation)
Atmosphere Non-corrosive, Non-flammable

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