Optical dimensions LASER CHECK 6212A User manual

OPTICAL DIMENSIONS™
2973 Harbor Blvd, #665, Costa Mesa, CA 92626
Phone: [phone]
i n f o @ o p t i c a - l d i m e n s i o n s . c o m
w w w . o p t i c a l - d i m e n s i o n s . c o m
LASER
CHECK

Surface Roughness
Measurement Gages
™
6212A Manual Version 14.56

OPTICAL DIMENSIONS™
2973 Harbor Blvd, #665, Costa Mesa, CA 92626
Phone: [phone]
i n f o @ o p t i c a - l d i m e n s i o n s . c o m
w w w . o p t i c a l - d i m e n s i o n s . c o m
™

LASER
CHECK

Operations and Specification Manual for the
Lasercheck 6212A System
Revision 14.56
© Optical Dimensions
and Optical D i m e n s i o n s are Registered Trademarks of Optical
Dimensions. The information in this document is provided as an aid in the
Assembly, Diagnostics, and Operation of the Lasercheck Gage, Components, and Accessories
and is not to be used otherwise or reproduced without written consent of Optical Dimensions.
The Lasercheck gage is patented technology protected under US Patent Number 5,608,527.

OPTICAL DIMENSIONS™
2973 Harbor Blvd, #665, Costa Mesa, CA 92626
Phone: [phone]
i n f o @ o p t i c a - l d i m e n s i o n s . c o m
w w w . o p t i c a l - d i m e n s i o n s . c o m
™
Contents
Operations and Specification Manual for the .......................................................................................................................i
Lasercheck 6212A System .....................................................................................................................................................i
Revision 14.56 .......................................................................................................................................................................... i
© Optical Dimensions .............................................................................................................................................................. i
PERFORMANCE SPECIFICATIONS..........................................................................................................................................1
Other Features.........................................................................................................................................................................1
SAFETY.................................................................................................................................................................................2
Electrical ..................................................................................................................................................................................2
Laser ........................................................................................................................................................................................2
WARRANTY OVERVIEW .......................................................................................................................................................3
LIMITATION OF WARRANTY .................................................................................................................................................... 3
Contact Optical Dimensions customer service for shipping instructions: ................................................................................3
MAINTENANCE ....................................................................................................................................................................4
Cleaning the Windows.............................................................................................................................................................4
Assistance................................................................................................................................................................................4
INTRODUCTION TO LASERCHECK .........................................................................................................................................5
Overview.................................................................................................................................................................................. 5
Setting up the Instrument....................................................................................................................................................6
Unpacking Lasercheck ............................................................................................................................................................. 6
Basic Connections Control Box ................................................................................................................................................ 7
Physical Mounting ...................................................................................................................................................................8
Mounting/Fixturing Lasercheck .......................................................................................................................................... 8
Software Setup ........................................................................................................................................................................9

OPTICAL DIMENSIONS™
2973 Harbor Blvd, #665, Costa Mesa, CA 92626
Phone: [phone]
i n f o @ o p t i c a - l d i m e n s i o n s . c o m
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™
To Install Lasercheck Software............................................................................................................................................9
Basic Operation Using Control Box Pushbuttons................................................................................................................10
Turning the System On ..........................................................................................................................................................10
Main Screen ......................................................................................................................................................................10
Control Unit and Displays ......................................................................................................................................................10
LCD Screen ........................................................................................................................................................................ 10
LCD Push Buttons..............................................................................................................................................................11
Highlighting ....................................................................................................................................................................... 11
If Controller Does Not Respond to Pushbuttons .......................................................................................................... 12
Performing Manual Measurements ......................................................................................................................................13
Choose a Setup File........................................................................................................................................................... 13
Measure Window with Results ......................................................................................................................................... 13
Saving a Measurement .....................................................................................................................................................13
File Management ..................................................................................................................................................................14
File System Window..........................................................................................................................................................14
Send Command.................................................................................................................................................................14
Preparing Windows Software to receive files ..............................................................................................................14
Sending Measurement Data from the Lasercheck Controller ......................................................................................15
Receive Command ............................................................................................................................................................15
File Naming...................................................................................................................................................................15
Preparing Control Box to receive files ..........................................................................................................................15
Sending Setup Data with the Windows Software.........................................................................................................16
New Cal Command............................................................................................................................................................16
Delete Command ..............................................................................................................................................................16
Reset Command................................................................................................................................................................17

OPTICAL DIMENSIONS™
2973 Harbor Blvd, #665, Costa Mesa, CA 92626
Phone: [phone]
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™
Exit Command...................................................................................................................................................................17
Data Files:.............................................................................................................................................................................. 18
Sample Data File ...............................................................................................................................................................18
Advanced Operations ........................................................................................................................................................19
Operation Using Windows Software .....................................................................................................................................19
Control Box Setup .............................................................................................................................................................19
Starting Windows Software ..............................................................................................................................................19
Entering the Setup Module............................................................................................................................................... 19
Setup Options ...................................................................................................................................................................20
Select the Communications Port ..................................................................................................................................20
Select Automation Types.............................................................................................................................................. 21
Setup for Lab System ...............................................................................................................................................21
Setup for Continuous Measurements / Roll Grinding ..............................................................................................21
Set up for Individual Parts / Parts Inspection........................................................................................................... 22
Create New Lasercheck Windows Setup Files ..............................................................................................................22
Controller Setup Files ...............................................................................................................................................24
Creating Controller Setup Files ................................................................................................................................24
Open Lasercheck Windows Setup Files ........................................................................................................................ 24
Automatic.................................................................................................................................................................26
Save Parameters ......................................................................................................................................................26
Software Manual Operation .............................................................................................................................................28
Perform Measurements Module ..................................................................................................................................28
Measure Menu......................................................................................................................................................... 30
Start .....................................................................................................................................................................31
Stop......................................................................................................................................................................31

OPTICAL DIMENSIONS™
2973 Harbor Blvd, #665, Costa Mesa, CA 92626
Phone: [phone]
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Sequence .............................................................................................................................................................31
Save......................................................................................................................................................................31
Export...................................................................................................................................................................32
Return ..................................................................................................................................................................32
Automated Operation.......................................................................................................................................................32
“Start” and “Stop” Sensor Wiring Inputs......................................................................................................................34
Appendix A –Lasercheck Alignment Principles and Procedures.........................................................................................35
How Does Lasercheck Work? ................................................................................................................................................ 35
Alignment .............................................................................................................................................................................. 36
Vertical..............................................................................................................................................................................36
Vertical Alignment Base plate ......................................................................................................................................37
Horizontal ......................................................................................................................................................................... 38
Cylindrical Surface Measurement Alignment Fixture ...................................................................................................39
Bore ID Surface Measurement Alignment Fixture........................................................................................................ 40
Directional / Rotational..................................................................................................................................................... 40
Custom Shapes and Fixturing ................................................................................................................................................41
3-Dimensional Shapes.......................................................................................................................................................41
Small Surfaces ...................................................................................................................................................................42
Measure/Headtest Dialog Box .............................................................................................................................................. 43
Measure/Headtest Screen A .............................................................................................................................................43
Measure/Headtest Screen B .............................................................................................................................................44
Measure/Align Dialog Box..................................................................................................................................................... 45
Horizontal Alignment with Measure/Align .......................................................................................................................45
Verifying Alignment Procedures ........................................................................................................................................46
Set Head Close Correct Position ............................................................................................................................................46

OPTICAL DIMENSIONS™
2973 Harbor Blvd, #665, Costa Mesa, CA 92626
Phone: [phone]
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Align Horizontally ..................................................................................................................................................................46
Align Vertically ......................................................................................................................................................................46
Verify Alignment.................................................................................................................................................................... 46
Appendix B –Mounting/Fixturing Lasercheck....................................................................................................................47
Existing Mounting Holes on Lasercheck Sensor.....................................................................................................................48
Appendix C - Setup Files.....................................................................................................................................................49
Setup file format.................................................................................................................................................................... 49
RECEIVE_NAME.................................................................................................................................................................49
FILENAME..........................................................................................................................................................................49
START_INPUT .................................................................................................................................................................... 49
MEAS ............................................................................................................................................................................49
SERIAL ...........................................................................................................................................................................49
EXTERNAL1 ...................................................................................................................................................................49
RA_UNITS ..........................................................................................................................................................................49
RA_LIMITS .........................................................................................................................................................................50
ANALOG_OUTPUT.............................................................................................................................................................50
LOW_ANALOG .............................................................................................................................................................. 50
HIGH_ANALOG ............................................................................................................................................................. 50
Jumper Settings for Setting Analog Output to 4-20 mA or 0-10 V ...........................................................................50
RA_THRESHOLD ................................................................................................................................................................ 50
CAL_TYPE ..........................................................................................................................................................................50
CALIBRATION ....................................................................................................................................................................50
Default.set setup files............................................................................................................................................................50
Appendix D - Calibration Procedures .................................................................................................................................51
Theory - Measurement and Calibration ................................................................................................................................ 51

OPTICAL DIMENSIONS™
2973 Harbor Blvd, #665, Costa Mesa, CA 92626
Phone: [phone]
i n f o @ o p t i c a - l d i m e n s i o n s . c o m
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™
Measurement of Roughness.............................................................................................................................................51
Requirement for Calibration of Lasercheck to Specific Machining Operation..................................................................52
Base Calibration .................................................................................................................................................................... 53
Overview of Calibration Process............................................................................................................................................53
Appendix E –Input and Output Pinouts.............................................................................................................................54
Input: 9-Pin Female D-sub Connector....................................................................................................................................54
Internal Opto relay:........................................................................................................................................................... 54
Trigger pins: ...................................................................................................................................................................... 54
Power pins: .......................................................................................................................................................................54
Internal Opto relay Schematic: .........................................................................................................................................55
Typical Wiring Example:....................................................................................................................................................55
1) Using Unpowered Switches for inputs:................................................................................................................55
2) Using Powered Triggering Device (e.g. Proximity Sensors) for Inputs:................................................................ 56
Recommended Proximity Sensor Specifications: ..................................................................................................... 56
Output: 9-Pin Female D-sub Connector.................................................................................................................................57
1) Output Schematic Ra_Limit......................................................................................................................................57
a) Normal State –Surface Within Ra_Limit –in Spec ..............................................................................................57
b) Surface Outside Ra_Limit –out of Spec...............................................................................................................57
2) Output Schematic Analog_Out ................................................................................................................................ 58
a) 0-10V....................................................................................................................................................................58
b) 4-20mA ................................................................................................................................................................58

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PERFORMANCE SPECIFICATIONS
Measurement / Detection Method
Angle resolved laser scattering
Measurement speed
Single measurement in < 0.5 seconds
Measurement range
0.5 µinch to 40 µinch / 0.0125 µm to 1.0 µm
Repeatability
± 3.0% of measured value
Spot size (area-measured)
5 mm X 1 mm
Environmental considerations (temperature / humidity):
Operating
-10º C to +55º C / 10% to 90% RH
Storage
-40º C to +80º C / 1% to 99% RH
Power requirements
110 / 220 VAC, 50 / 60 Hz
Other Features
Factory Calibrated to Ra Ground Surface Standards
Works on any material/color (rubber, glass, steel, etc.)
RS232 Interface Option
Stored items:
All Roughness Values
Date and Time
Average Ra Roughness and Standard Deviation
Minimum / Maximum Ra Roughness
CSV text Formatted File

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SAFETY
Electrical
Lasercheck has been designed as a sealed and enclosed system. Voltages to operate the measurement sensor
are low (0 to +5 Volts) to minimize shock hazard.
Laser
The laser used in Lasercheck is a class II laser device. Class II lasers are not considered hazardous to the skin but
are considered a “chronic viewing hazard”. Users should not stare directly into the beam or directly into the
beam reflected off a smooth specular surface. The ends of the Lasercheck measurement sensor have “Caution”
and “Avoid Exposure” labels to remind the operator to avoid exposure to the radiation. The sensor also has
“Identification” and “Certification” labels. The Lasercheck control unit also has "Identification” and
“Certification” labels. Reproductions of these labels are shown below.
Caution –use of controls or adjustments or performance or procedures other than those specified herein may
result in hazardous radiation exposure.
The measurement sensor emits a red visible (650-nm) laser beam pulsing at a 10 to 50 Hz. Each “pulse” contains
as much as 90 microjoules of energy. Pulses can be as short as a 5 millisecond interval, with 20 microsecond rise
and fall times. Maximum “peak” power can be as high as 2.0 milliwatts. Average maximum power being
emitted from the laser can be as high as 900 microwatts. Once the beam strikes the measurement surface, the
laser energy is reflected back into the Lasercheck detection system. However, multiple reflections and stray
light may exit from between the sensor and measurement surface and care should be taken to avoid direct eye
exposure to the radiation.
Typical Laser Identification and Warning Labels
Optical Dimensions
2973 Harbor Blvd #665
Costa Mesa, CA 92626
Mfg Date:
Serial #
Complies with 21 CFR
1040.10 and 1040.11
U.S. Patent No. 5,608,527
Model 6212
TM
CAUTION
DO NOT STARE INTO BEAM
LASER RADIATION
CLASS II LASER PRODUCT
650 nm –0.9 mW MAXIMUM
AVERAGE OUTPUT
AVOID EXPOSURE
Laser Radiation Emitted
From This Aperture

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WARRANTY OVERVIEW
Optical Dimensions certifies that the Lasercheck surface roughness measurement system meets specifications.
The Lasercheck system has a warranty period of one (1) year from date of first usage. This warranty is against
defects in material and workmanship. During the warranty period, Optical Dimensions will, at its option, either
repair or replace products, which prove to be defective. For detailed warranty information, refer to second page
of this manual.
LIMITATION OF WARRANTY
This warranty will not apply to defects resulting from improper or inadequate maintenance by Buyer (please
refer to Maintenance section), unauthorized modification or misuse, operation outside the environmental
specifications, improper site preparation or site maintenance, fire, flood earth movement or collapse. Optical
Dimensions shall not be liable for any direct, indirect, special, incidental or consequential damages, whether
based on contract, tort, or any other legal theory.
For warranty service or repair, the Lasercheck system must be returned to Optical Dimensions, after prior
Return Material Authorization Number (RMA #) has been obtained. Buyer shall prepay shipping charges to
Optical Dimensions. The return shipment should be labeled with the RMA #.
Contact Optical Dimensions customer service for shipping instructions:
OPTICAL DIMENSIONS
2973 Harbor Blvd, #665
Costa Mesa, CA 92626
Phone: [phone]
Email: [e-mail]

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MAINTENANCE
Lasercheck has been designed and assembled by skilled and experienced engineers and technicians. All
components used in the system operate well within their rated specifications to ensure long life and reliability of
the Lasercheck system. Electronics, lasers, and detectors are all solid-state devices and should not need to be
serviced or maintained by the user.
The controller housing is made from impact-resistant ABS and is colored black. The housing is not waterproof,
but it can be subjected to moderate rain or splash without harm.
The laser head is made of machined aluminum and plastic and all electronics and optics are secured and sealed
within the head. The head is rugged enough to withstand handling that might be normally encountered in
manufacturing shop floor gage operation. The head is also water resistant and can be subjected to moderate
rain or splash without harm.
Boards and electronics used in the system are static sensitive and easily damaged by mishandling. The
Lasercheck housing and electronics are well grounded. The head is sealed at all seams and holes to protect
components from external contaminants. The user should not open the measurement head. If opened by non-
authorized personnel, the warranty provided by Optical Dimensions will be void.
Cleaning the Windows
The internal optics and electronics are cleaned during assembly and kept within the sealed sensor. The internal
windows at the bottom of the Lasercheck sensor cover and protect the internal sensors and laser source. They
will be exposed to outside contaminants and in very dirty environments should be cleaned at least weekly.
The windows are rugged, but care needs to be taken to not scratch them during operation or cleaning. They
should only be cleaned with ethanol, methanol, or a glass cleaner and a soft, clean paper towel, tissue, or Q-tip.
Assistance
Contact your nearest Optical Dimensions office.

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INTRODUCTION TO LASERCHECK
Overview
Lasercheck is designed to perform high speed, repeatable, non-contact measurements of surface roughness. A
built in visible laser diode emits a laser beam from the bottom of the gage illuminating the surface beneath it.
After striking the surface, the laser light is reflected and scattered back into the Lasercheck detection system.
The overall intensity and distribution of the reflected and scattered light is measured, digitized by Lasercheck
electronics, and then Ra roughness is calculated for the illuminated area. This Ra value is then displayed on the
LCD screen of the Lasercheck control unit. The Lasercheck Windows display and control software can be used to
display the real time Ra values in graphical and numeric format along with statistical parameters.
Lasercheck has been designed for a nominal height standoff of 0.1 inch 0.01 inches from the measurement
surface. Motions and vibrations within that tolerance range are monitored continuously and reflectance and
scatter distribution are normalized and corrected during every measurement cycle to ensure accurate results.
Surfaces are positioned 0.1 inches below the gage allowing non-contact measurements of the surface to be
made.
Measurements can be performed by manual pushbutton operation, or continuous high-speed measurements
controlled by Windows software, or fully automated high speed on-line measurements triggered by external
signals and the Windows software. At the end of a measurement sequence, the user is provided options for
performing additional measurements, saving the current measurements or exiting the measurement sequence.
When measurements are saved an ASCII file format can be created for reading into a variety of spreadsheet and
analysis software packages.

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Setting up the Instrument
Unpacking Lasercheck
All components of Lasercheck have been inspected and tested individually and as a system before shipping. You
should find the following items with your system:
1) Lasercheck measurement head.
2) Standoff (0.100”) plate (typically attached to measurement head)
3) Lasercheck control unit
4) 110 Volt Power Device Cable
5) RS232 serial null modem computer cable.
6) CD or 3.5 inch floppy disk with Lasercheck Calibration & Setup Files, Plus Manual
7) Alignment feet for cylindrical surface measurement (optional).
Measurement Head Control Unit

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Basic Connections Control Box
Rear Panel of Box Front Panel of Box
Attach the power cable to the “110/220VAC” plug and then connect to 110/220 Volt Power Source.
The control unit has a DB15 connector labeled “Sensor” which mates to the connector end of the measurement
head cable. The cable should be secured with the thumbscrews on the cable.
The computer cable provided is a serial null modem variety. Standard serial connector adapters (25 to 9 pins,
male to female etc.) can be used with these cables as necessary without affecting the null modem capability.
The Lasercheck control unit has a 9-pin serial connector port for attaching one end of the cable (labeled RS232.)
The connector should be screwed on to ensure strength and integrity during operation. The other end should be
attached to an available serial port on your host computer. Be sure that port has been set up as COM1 to COM4
in your computer.
Note: During manual pushbutton measurement operation this computer connection is not required or used.
This connection is used for transferring saved measurement files to a host computer for storage or input into
SPC, spreadsheet, or other data analysis software or for automated measurements taken with Optical
Dimensions Windows software.
The start and stop inputs must have a female DB9 connector. They should be connected to the connector on the
control box labeled “Input”. These would only be used during “automatic operation”.
Analog (0-10 Volt or 4-20 mA Current Loop) or indicators for “out of spec” surfaces must have a DB9 connector.
They should be connected to the connector on the control box labeled “Output”. These would typically be used
during “automatic operation”.
Printer
RS232
Keyboard
Monitor
RS485
110/220 VAC
Reset
Output
Input
Sensor
OFF
ON
Laser
Status
Pow
er
Laser
Select
Meas
>
^
OPTICAL DIMENSIONS LLC


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Physical Mounting
The Lasercheck head is supplied with a 1/10-inch thick footplate on the bottom. This will align the head within
specification on flat surfaces. If surfaces are cylindrical, then optional alignment feet should be used. For
surfaces with different geometry, alignment fixturing should be used. An understanding of alignment principals
of Lasercheck is required for development of fixturing. Please read the section “LASERCHECK ALIGNMENT
PRINCIPALS AND PRECEDURES” later in this manual to understand principals of alignment.
When performing measurements, set the long axis of the head perpendicular to the dominant “lay” of the
surface that you wish to measure. The long axis of the head determines the direction of measurement in the
same way that the direction of motion of a stylus on a stylus gage determines the direction of measurement.
Mounting/Fixturing Lasercheck
There are drilled and tapped holes on the Lasercheck sensor head that can be used for mounting and installing
Lasercheck in an automated inspection application. The head should be positioned at a location where surface
will be at the correct vertical and horizontal position relative to the gage head (see appendix section on
Lasercheck Alignment Principles and Procedures). The surface can move under the gage or the gage can move
over the surface. In either case, alignment must be maintained during relative motion. An air knife can be used
prior to the gage to clean coolant etc. from surfaces to be inspected if necessary. A “Start” sensor or input
should be positioned to be activated when the gage or surface is positioned to measure at the beginning of the
surface or process. A “Stop” sensor or input should be positioned to be activated when the gage or surface is
positioned to measure at the end of the surface or process. Both of these sensors should be wired to the “Input”
connector on the back of the control box as described in the Appendix –Input and Output Pinouts section.

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Software Setup
Lasercheck uses two different software packages. The control unit has software that initializes electronics,
controls the LCD screen, monitors the laser, reads detector signals, and calculates the alignment and surface
roughness. It also saves measurements in ASCII format files. This software comes pre-installed inside the control
unit. It is designed to auto load and auto execute whenever the “on / off” switch is turned on.
A CD or floppy disk with calibration & setup files plus the manual is provided. This software is installed on a
separate computer.
An optional Windows file transfer software program is provided on a separate CD. This software is installed on a
separate computer and uses the optional 110V or 220V Adaptor & RJ12 / Serial Interface Connecting Cable to
communicate with the control unit.
To Install Lasercheck Software
1) Insert Lasercheck CD or disk into the appropriate drive.
2) Click on the Start button. From the Start menu, choose Run.
3) Click on Browse button.
4) Select “appropriate drive letter:”
5) Double click on Lasercheck Model 6212A setup.exe.
6) Finally, click on Finish button.

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Basic Operation Using Control Box Pushbuttons
Once the cables are attached and measurement head is mounted and aligned, you are ready to perform a
measurement. Lasercheck is run from the control unit keypad and LCD screen or optionally the Windows
software on the host computer. Detailed instructions on specific setups and operations can be found in the
software users’ manual. Following is an abbreviated description for setup and performance of a measurement
sequence.
Turning the System On
The control unit has a main on/off power switch. The control box provides regulated DC power to the
Lasercheck head. The control unit also powers the internal electronics, and automatically loads and executes
software internal to the controller.
Main Screen
When the main power switch is turned to the “on” position the internal electronics will turn on and software will
begin executing. During this startup period you will see will see the words displayed on the LCD screen:
Once the electronics and software are fully executed, you will see the LCD screen display:
Or the current version of the software will be displayed. After 2 seconds, the LCD screen display will change to
the Main Screen:
The system is now ready to perform measurements. The control unit also has a second non-backlit on/off
switch. This must be turned to the on position to provide power to the internal laser. A red LED above the switch
is illuminated when the laser is operational.
Control Unit and Displays
LCD Screen
The Lasercheck Sensor Control Box has a 2 row, 16-column LCD screen. There are also 4 push button inputs to
control measurements, data storage, and data transfer.
Lasercheck
Please Wait
Lasercheck
Version 14.56
SELECT:>GRIND_ST
^System:

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LCD Push Buttons
The four push buttons are labeled as following (in the following order left to right) and are for:
^Switch highlight between options
>Scroll through options
Select Select highlighted option
Meas Take measurement at any time from main or measure windows
Highlighting
The “^”, “>”, and “Select” buttons on the front panel of the Lasercheck are used to highlight and select desired
options. Pushing the “^” push button on the front panel switches which main menu is ACTIVE and highlighted in
CAPITAL letters. Options in that highlighted menu can be scrolled through are with a “>” on the LCD screen. To
choose an option, the “Select” button is pushed. The option that appears in to the right of the menu in CAPITAL
letters on the LCD screen is then selected. For example the main screen looks like:
Pushing the “^” button will highlight the System menu instead of the Select menu that is currently highlighted to
change the screen to:
Pressing the “Select” button will select the files option from the System menu.
Changing options in the highlighted Files menu is done by pressing the “>” button. Pushing the “>” button once
shows:
SELECT>DEFAULT
^System:
^Select
SYSTEM: >files
Manage files:
FILES: >Send
Manage files:
FILES: >Receive

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If Controller Does Not Respond to Pushbuttons
The automated Lasercheck controller is designed to work under external computer control or under control of
the front panel pushbuttons. This is determined by configuration of an internal (user selectable) setup file inside
the control box. When a setup file configured to respond to an external computer through the serial RS232
connector on the back of the control box is active, the system will not respond to the front panel pushbuttons.
It takes about one second for the serial port to take control away from the pushbuttons when a “serial” based
setup file is active. In fact, sometimes the controller may just come up with a “serial” based setup file displayed
when you start the system making it difficult to ever get control of the pushbuttons. The solution is to fairly
rapidly push either of the scroll (> or ^) pushbuttons as the “serial” based setup file appears. You can get the
unit to briefly respond and scroll past a “serial” based setup file if you do it quickly and this will allow you control
of the unit through the pushbuttons so that you can do routine measures, file maintenance, transfers and so on.