HEIDENHAIN ND 1200 User Manual
Operating Instructions
ND 1200
QUADRA-CHEK
Software Version
2.16
English (en)
4/2009
ND 1200 Introduction
1 LCD screen
2 Soft keys
3 Measurement function keys
4 Axis keys
5 Mode selection keys
6 Command keys
7 Menu key
8 Arrow cursor keys
9 Fast track keys
10 Numeric keypad
11 Send key
12 LCD On/Off key
ND 1200 panel keys
Panel keys are used to initiate feature measurements, apply
tolerances, send reports of measurement results and configure
operational parameters.
Panel function key Panel key
Soft keys: Functions change in support of the activities displayed
on the LCD.
Measure keys: Select a feature measurement type. Feature
measurement types include points, lines, circles distances,
angles, skew alignments and Measure Magic.
Axis keys: Select axes for zeroing or presetting datums prior to
measurements.
Mode keys: Select unit of measure, datum, cartesian or polar
coordinate system and help.
Command keys: Control measurement and data entry
processes.
ND 1200 QUADRA-CHEK 3
Panel function key Panel key
Menu key: Displays five soft key menus for system setup,
programming, extra functions clearing data and optional optical
edge detector functions.
Arrow cursor keys: Used to scroll through lists and navigate
menus and setup screen data fields. The up arrow cursor key is
also used to begin a feature construction process, as described
later in the feature Constructions portion of this chapter.
Fast track keys: Two programmable fast track keys are used to
perform frequently used functions. These keys can easily be
located by touch without taking your eyes off the part. By default
the left fast track key is assigned the Enter key function and the
right is assigned the Finish key function. Users can program
either fast track key as described later in the Hotkeys portion of
Chapter 2: Installation, Setup and Specifications.
Numeric keypad: Used to enter numeric data. Additionally, the
decimal point key and +/- key are used to adjust the contrast
of the LCD display.
Send key: Used to transmit measurement results to a computer,
USB printer or USB flash drive.
LCD On/Off key: Press the LCD on/off button to turn the LCD
display off without removing power from the ND 1200. Press the
button a second time to restore the LCD display. Additionally, the
LCD On/Off key can be used to clear feature data, datums and
skews.
4 Preface
ND 1200 rear panel
1 Serial number label
2 Power switch
3 Power cord connector and fuse holder
4 Power ground access
5 Measurement axis connectors
6 RS-232 serial port connector
7 Optical reference cable connector
8 Optical sensor cable connector
9 Not supported in the ND 1200
10 Tilt base mechanical tightness adjustment
11 Electrical Ratings label
ND 1200 side panel
1 Speaker/headset jack
2 USB Type A connector
3 RJ-45 Foot switch/hand switch/keypad connector
ND 1200 QUADRA-CHEK 5
Information contained in this manual
This User's manual covers the operation, installation, setup and
specifications of the ND 1200. Operating information is contained in
chapter 1. Installation, setup instructions and specifications are
contained in chapter 2.
Fonts used in this manual
The following fonts are used to indicate operator controls or to show
emphasis:
Operator controls - soft keys and other panel keys are shown in
upper case.
Emphasis - Items of special interest or concepts that are
emphasized to the user are shown in bold type.
Showing sequences of key presses
The ND 1200 user performs sequences of soft key and panel key
presses to measure part features and complete other tasks. These
sequences are indicated using text as shown in the following
example:
Press the MENU key, press the EDGE soft key and then press the
AUTO E soft key is sometimes abbreviated as:
Press MENU/EDGE/AUTO E
Symbols within notes
Notes are marked with symbols on the left indicating the type, or
potential severity of the information.
General Information
This is additional or supplementary information about an
activity or concept.
Warning
This warns of a situation or condition that could lead to
measurement errors, equipment malfunction or
equipment damage. Do not proceed until the message is
read and understood.
Caution - Risk of electric shock
This warns of a situation or condition that could lead to
electrical shock and to personal injury or death. Do not
proceed until the message is read and understood.
6 Preface
Safety considerations
General accepted safety precautions must be followed when
operating the system. Failure to observe these precautions could
result in damage to the equipment, or injury to personnel. It is
understood that safety rules within individual companies vary. If a
conflict exists between the material contained in this manual and the
rules of a company using this system, the more stringent rules should
take precedence.
The ND 1200 is equipped with a 3-wire power plug that
includes a separate ground connection. Always connect
the power plug to a 3-wire grounded outlet. Use of 2-wire
power plug adapters or any other connection accessories
that remove the third grounded connection create a safety
hazard and should not be permitted.
Unplug the ND 1200 from the power outlet and seek the
assistance of a qualified service technician if:
The power cord is frayed or damaged or the power plug
is damaged
Liquid is spilled or splashed onto the enclosure
The ND 1200 has been dropped or the exterior has been
damaged
The ND 1200 exhibits degraded performance or
indicates a need for service some other way
ND 1200 measurement axes
The ND 1200 DRO can display 2, 3, or 4 axes depending on the model
purchased. DRO screen images used throughout this manual show
different numbers of axes and are for illustration only.
Software version
The software version is shown in the About setup screen discussed
later in chapter 2.
Cleaning
Use only a cloth dampened with water and a mild detergent for
cleaning the exterior surfaces. Never use abrasive cleaners, and never
use strong detergents or solvents. Only dampen the cloth, do not use
a cleaning cloth that is dripping wet.
ND 1200 QUADRA-CHEK 7
8 Preface
1 Operation ..... 13
1.1 ND 1200 Overview ..... 14
1.2 Basic Functions of the ND 1200 ..... 16
Switching on the ND 1200 ..... 16
Establishing a repeatable machine zero ..... 17
Switching off the ND 1200 ..... 17
Panel key descriptions ..... 18
LCD screen and soft key layout ..... 22
DRO mode screen and soft keys ..... 22
Feature evaluation mode screens and soft keys ..... 23
Feature measurement mode screen and soft keys ..... 24
ND 1200 Menus ..... 25
1.3 Preparing to Measure ..... 29
Power-up the ND 1200 ..... 29
Establish machine zero ..... 29
Adjust LCD screen contrast ..... 30
Select unit of measure ..... 30
Select a datum ..... 30
Select a coordinate system ..... 30
Select the desired annotation ..... 31
Toggle between forward and backward annotation ..... 31
Select a probe type ..... 32
Select crosshairs: ..... 32
Select an optical edge probe ..... 32
Calibrate the optical edge detector ..... 33
Perform a Teach ..... 33
Perform a D. Cal ..... 33
Perform an X Cal ..... 33
Align the part to a measurement axis ..... 34
Perform a part alignment (Skew) ..... 34
Establish a datum ..... 35
Probe skew and part edge lines for point construction ..... 35
Construct a datum point from line features ..... 36
Zeroing the datum ..... 36
Presetting the datum ..... 37
1.4 Measuring Part Features ..... 38
Part features ..... 38
Feature list ..... 38
Probing part features ..... 39
Probing with crosshairs ..... 39
Probing with optical edge detection ..... 39
Probing with Measure Magic ..... 40
Measuring features ..... 41
Auto repeat ..... 41
Measuring points ..... 42
Measuring lines ..... 43
Measuring circles ..... 44
Measuring distances ..... 45
Measuring angles ..... 46
ND 1200 QUADRA-CHEK 9
1.5 Creating Part Features ..... 47
Created features ..... 47
Creating features ..... 47
Example of creating a feature ..... 48
1.6 Constructing Part Features ..... 49
Constructed features ..... 49
Constructing features ..... 49
Example of constructing a feature ..... 50
..... 51
More feature construction examples ..... 51
1.7 Tolerancing ..... 54
Feature tolerances ..... 54
Applying tolerances ..... 55
Example of applying a tolerance ..... 56
1.8 Programming ..... 58
ND 1200 programs ..... 58
Recording a program ..... 58
Example of recording a program ..... 59
Running a program ..... 60
Example of running a program ..... 61
Editing a program ..... 62
Displaying program steps ..... 62
Expanding and compressing a program steps ..... 63
Changing a program step ..... 64
Deleting a program step ..... 67
Inserting new program steps ..... 68
Copying a program ..... 69
Deleting a program ..... 70
Backing up programs ..... 71
1.9 Reporting ..... 72
Reporting ..... 72
Sending reports ..... 72
1.10 Error Indications ..... 73
Scale errors ..... 73
10
2 Installation, Setup and Specifications ..... 75
2.1 ND 1200 Shipment Contents ..... 76
Items included with the ND 1200 ..... 76
Optional items possibly included ..... 76
Repackaging the ND 1200 ..... 77
2.2 Hardware Installation ..... 78
Assembling the mounting stand ..... 78
Benchtop location and mounting ..... 78
Arm mounting (optional) ..... 79
Connecting power ..... 80
Connecting encoders ..... 81
Connecting a computer ..... 82
Connecting a headphone ..... 82
Connecting a USB printer ..... 82
Connecting an optional foot switch or remote keypad ..... 83
Connecting and installing optical edge detection ..... 84
ND 1200 QUADRA-CHEK 11
2.3 Software setup ..... 85
Setup menu ..... 86
Setup example: entering the supervisor password ..... 87
Order of setup ..... 88
Language selection and product version ..... 89
Supervisor password and program unlocking ..... 90
Loading settings files and startup screens ..... 91
Encoder configuration ..... 92
Encoders screen ..... 92
Misc screen ..... 95
Optical edge detection setup ..... 96
Edge menu tools ..... 96
Misc screen ..... 97
Stage squareness calibration ..... 98
Error correction ..... 99
Linear error correction (LEC) ..... 100
Segmented linear error correction (SLEC) ..... 102
Nonlinear error correction (NLEC) ..... 106
NLEC by measuring points on a calibration grid ..... 108
NLEC by importing an nlec.txt file ..... 110
Saving NLEC correction data as an nlec.txt file ..... 110
Measurement scaling for parts that expand or shrink ..... 111
Scale Factor screen ..... 111
Measurement configuration ..... 112
Measure screen ..... 112
Display formatting ..... 115
Display screen ..... 115
Hot key assignments ..... 118
Hot keys screen ..... 118
Print formatting ..... 122
Print screen ..... 122
Form chars screen ..... 125
RS-232 port configuration ..... 126
RS232 screen ..... 126
USB port configuration ..... 128
USB screen ..... 128
Audio configuration ..... 130
Sounds screen ..... 130
Key repeat rate adjustment ..... 131
Misc screen ..... 131
Time and date settings ..... 132
Clock screen ..... 132
Saving settings files and programs ..... 133
2.4 Specifications ..... 134
Dimensions ..... 135
Arm mount bracket ..... 136
12
Operation
1.1 ND 1200 Overview
The ND 1200® is an advanced digital readout (DRO) system for
performing high-precision 2, 3 or 4 axis measurements using analog or
TTL encoders. The ND 1200 can be used with optical comparators,
toolmaker’s microscopes or video measurement systems as part of inline production or in final quality inspection.
The following functions are available in the ND 1200:
Reference mark evaluations for distance-coded and single reference
encoders
Linear, segmented linear and optional nonlinear error correction
Scaling factor for parts that expand or shrink
1.1 ND 1200 Overview
Multilingual LCD user interface: language is selected by the user
soft key functions under LCD change to support different user
activities
Arrow cursor keys for easy navigation of lists and menus
Measurement support function keys clearly marked with:
Unit of measure: mm or inch
Datum 1 or datum 2
Cartesian or polar coordinate system
Skew compensation for part alignment prior to measurement,
eliminating the need for time-consuming fixturing
Two datums for absolute and incremental measurements
Axis zero and preset keys for establishing datums
Easy selection of feature measurement type using clearly marked
measure function keys:
Points, lines, circles, distances, angles
Skew for part alignment
Measure Magic
Feature measurement can include:
Dimensional measurements of geometric part features
Creation of features by entering dimensional data
Construction of new features from existing features
Applying tolerances
®
for automatic feature type identification
ND 1200 Front panel
14 1 Operation
Number keypad with:
Number keys for data entry
Decimal point and +/- keys for data entry and LCD screen contrast
adjustment
User-defined hot keys that program panel and optional remote keys
to initiate commonly used functions.
User-defined programs made of the key-press sequences used to:
Perform measurements
Apply tolerances
Report results
Reports of measurement results printed to USB printer, sent to PC
over RS-232 connection or stored on USB drive
User-defined programs and system settings stored on USB drive
Speaker jack outputs for quiet or noisy environments
Optional optical edge detection probes and enters feature data
points at light to dark transitions on the comparator screen
Optional remote foot switch and keypad facilitate measurement
when the user is not close to the front panel
1.1 ND 1200 Overview
ND 1200 QUADRA-CHEK 15
1.2 Basic Functions of the ND 1200
Switching on the ND 1200
Switch on the ND 1200. The POWER switch is
located on the rear of the enclosure. After switching
the power on, or after a power failure, the power-up
screen will be displayed.
Press the FINISH key to advance from the power-up
screen to the DRO.
Your ND 1200 is now ready for operation and is in the Current Position
operating mode. Encoder position values will be displayed for all axes.
1.2 Basic Functions of the ND 1200
Power-up screen
DRO screen
16 1 Operation
Establishing a repeatable machine zero
If your ND 1200 was configured to establish a machine zero upon
power-up, a message will be displayed asking you to cross reference
marks or enter hard-stop axis reference positions. The machine zero is
used by the ND 1200 to apply error correction data as measurements
are performed. To establish a repeatable machine zero you must
either:
U Move the stage to have encoder reference mark crossings
recognized on each axis or
U move the stage to the hard-stop reference position and press
ENTER on each axis when no encoder reference marks are present.
If the requirement to cross reference marks is bypassed
by pressing the CANCEL soft key, error correction data
that might be stored in your ND 1200 will not be applied.
Switching off the ND 1200
Switch the ND 1200 off. The parameter settings,
error compensation tables and recorded programs
that have been saved during operation will be
retained in memory.
1.2 Basic Functions of the ND 1200
Your ND 1200 might also have been configured to retain
measurement results across power cycles
ND 1200 QUADRA-CHEK 17
Panel key descriptions
Descriptions of panel key functions are provided in the following
pages for MEASUREMENT function, COMMAND, MODE selection,
AXIS, FAST TRACK, SEND, LCD ON/OFF, and MENU keys. Soft key
functions are also described later in the next section as part of screen
and soft key layout descriptions.
MEASURE keys Function
Measure point: Press the POINT key once to
measure one point, or twice to use auto
repeat to measure a series of points. A
minimum of one data point is required to
measure a point.
Measure line: Press the LINE key once to
measure one line, or twice to use auto repeat
to measure a series of lines. A minimum of
two data points are required to measure a
line.
Measure circle: Press the CIRCLE key once
to measure one circle, or twice to use auto
repeat to measure a series of circles. A
minimum of three data points are required to
1.2 Basic Functions of the ND 1200
measure a circle.
Measure distance: Press the DISTANCE key
once to measure one distance, or twice to
use auto repeat to measure a series of
distances. Two points are required to
measure a distance.
ND 1200 Panel keys
Measure angle: Press the ANGLE key once
to measure one angle, or twice to use auto
repeat to measure a series of angles. Collect
a minimum of two data points, then press the
ENTER key on each leg of an angle.
Align part: Press the SKEW key to
compensate electronically for non-square
part alignment on the primary axis.
Use Measure Magic: Press the MEASURE
MAGIC key to automatically measure any
geometric feature or twice to measure a
series of like features. Collect the desired
points and press the FINISH key; Measure
Magic analyzes the data and determines the
feature type.
18 1 Operation
COMMAND keys Function
Enter data: Press the ENTER key to enter
points during feature measurements or to
enter values into configuration fields.
Pressing the ENTER key indicates that data
from a measurement or in a field is ready for
use.
Finish a measurement: Press the FINISH
key to complete a feature measurement.
Pressing the FINISH key a second time
returns the user to the DRO screen.
Delete data or features: Press the CANCEL
key to delete the last point entered, data in
configuration fields or any highlighted feature
from the feature list.
Quit current activity: Press the QUIT key to
abandon the current task and return to the
DRO screen or to exit the feature list.
MODE keys Function
Select unit of measure: Press the UNIT OF
MEASURE key to toggle between
millimeters and inches. The current unit of
measure is displayed in the upper right corner
of the screen.
1.2 Basic Functions of the ND 1200
Select a datum: Press the DATUM key to
toggle between datum 1 and datum 2.The
current datum number is displayed in the
upper right corner of the screen.
Select a coordinate system: Press the
COORDINATE key to toggle between
Cartesian and polar coordinate systems.
AXIS keys Function
Zero an axis: Press the axis key to the right
of the desired axis to zero the axis position
value when establishing a zero datum.
Preset an axis or axes: Press one or more
axis keys to the right of the desired axis or
axes when presetting axis position values for
a new datum.
ND 1200 QUADRA-CHEK 19
FAST TRACK keys Function
SEND key Function
Transmit measurement results: Press the
SEND key to transmit measurement data to a
computer, a USB printer or a USB memory
drive.
LCD ON/OFF key Function
Turn the LCD off or clear data: Press the
LCD ON/OFF key to toggle between LCD on
1.2 Basic Functions of the ND 1200
and LCD off, or to clear feature data, datums
and part alignments (skews).
Left frequently used function:
Press the left WIDE key to initiate
the function programmed for this
key. The factory default function for
this key is ENTER.
Right frequently used function:
Press the right WIDE key to initiate
the function programmed for this
key. The factory default function for
this key is FINISH.
MENU key Function
Display soft key menus: Press the MENU
key to display the titles of ND 1200 menus
above the soft keys. Menus include:
Setup: Used by supervisors to configure
the operational characteristics of the
system.
Prog: Used by operators and supervisors to
create and recall programs of recorded
measurement steps.
Extra: Used by operators to conduct
measurements and send measurement
result data.
Clear: Used by operators to clear
measurement data and datums.
Edge: Used by operators and supervisors
to install, calibrate and select optical edge
detectors.
20 1 Operation
ARROW CURSOR keys Function
Navigate menus and setup screen
data fields. The up arrow cursor key is
also used to begin a feature
construction process.
1.2 Basic Functions of the ND 1200
ND 1200 QUADRA-CHEK 21
LCD screen and soft key layout
ND 1200 LCD screens display information in one of four operating
modes:
DRO mode displays current positions of axes
Feature evaluation mode screens can be toggled between two
displays that show all measurement results and the data cloud of
collected points
Feature measurement mode displays feature type, points
collected and current positions of axes during measurements
Setup mode displays ND 1200 Installation and setup screens
Soft keys change to support activities shown on the screens.
Installation and setup screens and soft keys are described
later in Chapter 2: Installation, Setup and Specifications.
DRO mode screen and soft keys
The DRO screen shows:
Feature list of measured features on the left side
Unit of measure, current datum and probe type in the upper right
1.2 Basic Functions of the ND 1200
corner
The current positions of all axes
Part alignment status: a small rectangle over the axis letter indicates
that the part is aligned to a measurement axis (a skew was
performed)
Soft key functions for selecting a probe type and teaching
(calibrating) optical edge detection (optional)
DRO soft keys Function
Probe Toggles between crosshair and optical edge
detection probes
Teach Initiates the optical edge detection light-
calibration wizard. You will be guided through
the process by messages shown on the screen
22 1 Operation
DRO current position screen showing current axis
positions
Feature evaluation mode screens and soft keys
The feature evaluation screens can be toggled between two displays
by pressing the VIEW soft key to show:
Feature list of measured features on the left side
Unit of measure, current datum and probe type in the upper right
corner
The feature type and number of the highlighted feature
Feature position
Geometric and dimensional values such as diameter, length or angle
Number of data points used to define the feature
Form error
Parent features used if the feature was constructed
An indication that the feature was created if applicable
Data cloud of collected data points used to define the feature
DRO soft keys Function
Recall Displays a different feature from the feature list
by specifying its feature number.
View Toggles between the default screen showing
axis values and the screen showing data points
collected to define the feature.
Feature evaluation mode screen showing feature
values
1.2 Basic Functions of the ND 1200
Change Shows alternative fit algorithms for the current
feature type, such as LSBF (least squares best
fit) and ISO.
Zoom Changes magnification when viewing the data
Tol Displays the alternative tolerances that can be
Tolerances are discussed later in this chapter.
ND 1200 QUADRA-CHEK 23
cloud of collected data points.
Feature evaluation mode screen showing data points
applied to the current feature.
Feature measurement mode screen and soft keys
The feature measurement screen is displayed after initiating a feature
measurement by pressing a MEASUREMENT key and shows:
Feature list of measured features on the left side
Unit of measure, current datum and probe type in the upper right
corner
The feature type being probed and the number of collected data
points
The current positions of all axes
DRO soft keys Function
Probe Toggles between crosshair and optical edge
Recall Recalls the first parent feature of a new feature
Create Displays fields for entering data to create the
Const Initiates a new feature construction.
1.2 Basic Functions of the ND 1200
detection probes (available only with optical
edge detection option).
construction.
specified feature type.
Feature measurement mode screen showing feature
type and points collected
24 1 Operation
ND 1200 Menus
Press the MENU key to display menu titles over the soft
keys at the bottom of the LCD screen. Press a menu soft
key to display the corresponding menu screen. Menus
include:
SETUP menu SETUP functions
Press the SETUP menu
soft key to display the
collection of SETUP
screens used to configure
the ND 1200. Use of the
setup menu is explained
later in Chapter 2:
Installation, Setup and
Specifications.
Access to setup menu configuration data fields is
password restricted to supervisors and other technically
qualified personnel. Configuration mistakes can result in
serious measurement errors.
PROG menu PROG functions
Press the PROG soft key to
display the PROGRAMS
screen and soft keys for
program functions. Soft
keys include:
Menu titles are displayed over soft keys at the bottom
of the LCD screen
1.2 Basic Functions of the ND 1200
Record Records a program of user
Run Plays a program of
Edit Displays program steps for
Copy Copies a program to be
Delete Deletes a program.
ND 1200 QUADRA-CHEK 25
key presses that can be
played back later.
recorded key presses.
editing.
edited and saved under a
new name.
EXTRA menu EXTRA functions
Press the EXTRA soft key
to display the EXTRA popup menu. The EXTRA
menu is used perform
many measurement and
data transmission
functions. Highlight a
function and then press the
ENTER key. EXTRA menu
functions include:
Annot Toggles between forward
and backward annotation.
DMS/DD Toggles between the
MCS Clears datums and re-
1.2 Basic Functions of the ND 1200
MinMax Collects and stores
Preset Sets the position of one or
Preset! Recalls the last preset
Prt RS Sends current data to the
Run Runs the last program.
Send 2 Sends current X, Y data to a
display of degrees,
minutes, seconds and
decimal degrees.
establishes machine
coordinates.
minimum and maximum
values until the FINISH key
is pressed.
more axes to specified
values.
position.
RS-232 serial port.
printer, USB drive or
computer.
Send 3 Sends current X, Y, Z data
Send 4 Sends current X, Y, Z, Q
Send D Sends current diameter to
26 1 Operation
to a printer, USB drive or
computer.
data to a printer, USB drive
or computer.
a printer, USB drive or
computer.
EXTRA menu EXTRA functions
Send F Sends current form error to
a printer, USB drive or
computer.
Send L Sends current distance to a
printer, USB drive or
computer.
Send Q Sends current Q-axis value
to a printer, USB drive or
computer.
Send R Sends current radius to a
printer, USB drive or
computer.
Send X Sends current X-axis value
to a printer, USB drive or
computer.
Send Y Sends current Y-axis value
to a printer, USB drive or
computer.
Send Z Sends current Z-axis value
to a printer, USB drive or
computer.
Send < Sends current angle to a
printer, USB drive or
computer.
Time Displays the current date
and time.
1.2 Basic Functions of the ND 1200
Zero 2 Zeros X and Y axes in the
current datum.
Zero Q Zeros Q-axis protractor
CLEAR menu CLEAR functions
ND 1200 QUADRA-CHEK 27
value.
Press the clear soft key to
display soft key selections
for clearing data. Soft keys
include:
CLEAR menu CLEAR functions
Clr Ft Clears feature data from
Clr Sk Clears the part alignment
the feature list.
(skew). Clearing the skew
does not clear any datums
that have been established.
Clr All Clears feature, datum and
EDGE menu EDGE functions
part alignment data.
Press the EDGE soft key to
display edge detection soft
key functions. Soft keys
include:
1.2 Basic Functions of the ND 1200
Teach Calibrates edge detection
for typical light to dark edge
transitions.
D. Cal Calibrates edge detection
Install Installs edge detection.
X Cal Calibrates crosshair and
for fuzzy or irregular light to
dark edge transitions.
edge detector probes to
indicate identical positions.
Auto E Toggles between
automatic and manual edge
detection.
28 1 Operation
1.3 Preparing to Measure
Power-up the ND 1200
U Switch on the ND 1200. The POWER switch is located on the rear
of the enclosure. After switching the power on, or after a power
failure, the power-up screen will be displayed. See "Switching on the
ND 1200" on page 16.
U Press the FINISH key to advance from the power-up screen to the
DRO.
If your ND 1200 was configured to establish a machine zero upon
powering up, a message will be displayed asking you to cross
reference marks or specify axis references manually.
Establish machine zero
A repeatable machine zero is required if you plan to retain feature
measurement results across a power cycle or if error correction will be
applied to your measurements.
Often feature data retention and error correction are not
desired. In these cases, it is not necessary to establish a
machine zero.
To establish a repeatable machine zero:
U Move the stage to have reference mark crossings recognized on
each axis or
U move the stage to the hard-stop reference position and press
ENTER on each axis when no encoder reference marks are present.
1.3 Preparing to Measure
ND 1200 QUADRA-CHEK 29
Adjust LCD screen contrast
If necessary, adjust the LCD screen contrast using the decimal point
and +/- keys located on the numeric keypad.
U Press the DECIMAL POINT key to increase the
contrast
U Press the +/- key to decrease the contrast
Select unit of measure
U Press the UNIT OF MEASURE key to toggle between
millimeters and inches.
Select a datum
1.3 Preparing to Measure
U Press the DATUM key to toggle between Datum 1
and Datum 2.
Select a coordinate system
U Press the COORDINATE key to toggle between
Cartesian and polar coordinate systems.
30 1 Operation
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