X-Rite 948/968 ® Color Measurement Instruments Operation Manual
CAUTION: Operational hazard exists if AC adaptor other than X-Rite SE30-61 (115V) or SE30-62 (230V) is used. VORSICHT: Es besteht Betriebsgefahr bei der Verwendung von einem Adapter außer X-Rite SE30-61 (115 U) oder SE30-62 (230 U). AVISO: No use otro adaptador C.A. que no sea la pieza X-Rite SE30-61 (115V) o SE30-62 (230V), por el riesgo de mal funcionamiento del equipo. ATTENTION: Ne pas utiliser un autre adaptateur que la piéce X-Rite SE30-61 (115V) ou SE30-62 (230V).
WARNING: This instrument is not for use in explosive environment. WARNUNG: Das Gerät soll in einer explosiven Umgebung NICHT verwendet werden. ADVERTENCIA - NO use este aparato en los ambientes explosivos. ATTENTION: Cet instrument NE DOIT PAS être utilisé dans un environnent explosif. AVVERTIMENTO - NON usare questo apparecchio in ambienti esplosivi.
FCC This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
DECLARATION OF CONFORMITY complies to EN45014:1989 _____________________________________________________________________________________ Manufacturer’s Name: Manufacturer’s Address: X-Rite, Incorporated. 3100 44th Street, S.W. Grandville, Michigan 49418 U.S.A. European Contact Name: European Contact Address: X-Rite GmbH Stollwerckstraße 32 51149 Köln, Deutschland (49) 2203-91450 FAX (49) 2203-914519 Spectrophotometer Model Name 948 968 Model No.
Dear Customer: Congratulations! We at X-Rite, Incorporated are proud to present you with an X-Rite Color Measurement Instrument. This instrument represents the very latest in microcontrollers, integrated circuits, fiber optics, and display technology. As a result, your X-Rite 948/968 is a rugged and reliable instrument whose performance and design exhibit the qualities of a finely engineered instrument, which is not surpassed.
Table of Contents Opening Letter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Proprietary Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . General Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . User Interface . . . . . . . . . . . . . .
PROPRIETARY NOTICE: The information contained in this manual is derived from patent and proprietary data of X-Rite, Incorporated. This manual has been prepared expressly for the purpose of assisting in the use and general maintenance of this instrument. Publication of this information does not imply any rights to reproduce or use this manual for purposes other than installing, operating, or maintaining this instrument.
General Description The X-Rite 948 is a reflection spectrocolorimeter. The 948 measures spectral reflectance from 400nm to 700nm in 20nm intervals. It has a 0° illumination angle, a 45° viewing angle, and features a dual-beam, single light pulse compensation method to insure accuracy. The 948 calculates and displays colorimetric data. In addition, the 948 can output (to a printer or computer) colorimetric data.
General Description . . . continued Twenty four different reference values (Ref 01 - Ref 24) can be entered into the 948 and 968 manually (numerically) or by measuring a reference sample. The exceptions are that the reference values for ∆Whiteness and ∆Yellowness can only be entered by measurement. During reference entry all color spaces are automatically updated when a change has been made in one of them. The 948 and 968 can function as color difference meters.
User Interface This section will familiarize you with the typographical conventions, display functions, and general terms used in this manual. • In the text portion of this manual the 968 keys are shown with brackets on both sides and in boldface. Ex., [FUNCTION], [ILLUM], and [DIF]. • When a key is to be momentarily pressed, the statement "press" will be used. Ex., Press [FUNCTION]. • When a key is to be held depressed until another action occurs, the statement "hold down" will be used. Ex.
What To Do First! See how to unlock the shoe and charge the batteries...read Section 1 Getting Started. See how the positioning of the instrument during measurement affects the reading...read Section 2 - Positioning Techniques. Calibrate your instrument...read Section 4 - Calibration. Setup your instrument. You can set the operating parameters, RS232 parameters, and format output parameters of your unit. Remember, you can lock out of the display any function you do not want to use...
1. Getting Started 1.1 Packaging Check List After removing the instrument from the shipping carton, inspect for possible damage. If any damage is noted, contact the transportation company immediately. Do nothing more until the carrier’s agent has inspected the damage. If damage is not evident, check and make sure that all items are included (Refer to the parts list below, and following page for the packaging illustration). Your unit was packaged in a specially designed carton to assure against damage.
PACKAGING 2
1.2 Shoe Lock The shoe can be locked next to the housing for ease of storage. Unlocking Shoe 1. Hold shoe [1] against unit. 2. Slide black lock button [2] on bottom of unit towards the back until it stops, then slowly release shoe [1]. Locking Shoe 1. Hold shoe [1] against unit. 2. Slide black lock button [2] towards the front until it stops, then release shoe [1].
1.3 Battery Charging > THE UNIT SHOULD BE CHARGED BEFORE USE. The unit can be operated while the batteries are being charged. Before using make sure the voltage indicated on the AC adaptor complies with the AC line voltage in your area. If not contact your X-Rite dealer. > The unit should be fully charged in 14 hours. Note: If your unit has not been used for several weeks recharge for approximately 24 hours. > Charging the batteries for less than 14 hours will reduce the operating time of the unit.
2. Positioning Techniques The variety of items that the 948 and 968 can measure is almost endless. However, in order to obtain accurate and repeatable measurements, the bottom of the shoe must be: • Parallel with the surface to be measured if the surface is flat. • Tangent to the surface to be measured if the surface is curved. The reason for this is that any movement during measurement can cause the reading to vary.
Example 2 - Measuring a Coffee Cup Coffee Cup Jig CORRECT Example 3 - Measuring a Small Jig Knob CORRECT 6
3. Operation 3.1 Key Descriptions FUNCTION DIF ILLUM CAL [FUNCTION]/[t] See Section • Selects the function that will be used for measurement. Each momentary depression will cause the display to page through XYZ, Yxy, L*a*b*, L*u*v*, L*C*h°, Whiteness, & Yellowness. • Decreases numeric values when used with the [DIF] key during entry of reference or calibration values. • Selects Calibration when pressed with [ILLUM] key. • Selects various steps when in system setup procedures. 3.2 4.0 4.0 5.
3.2 Function Selection Each momentary depression of [FUNCTION] will sequentially page through the available functions: CIE XYZ (or RGB), Yxy, L*a*b* (or Lab Hunter), L*u*v*, a u bL*C*h° (or vL*C*h°), Whiteness, & Yellowness. If ∆ is active the following is displayed YEL C2 Y e + 3 3 . 5 6 Yd + 8 7 . 9 7 WHT C2 W 97.87 u v . . . . L . Ch LCh . . . . C 2 L. + 2 3 . 4 5 LCH . H +2 5 . 7 9 C 20.78 OR L 23.45 h 25.79 . ... C2 L. u v u +22.46 W e- 1 . 3 7 T -115.8 LC C C H C E C2 C 20.
> The illuminant/observer will not be displayed in the difference mode during operation of that function. It is only displayed during function selection. > ∆ E will be displayed in place of ∆ L*a*b*, ∆ L*u*v*, and ∆ L*C*H* during difference operation. Y e + 3 3 .5 6 Yd + 8 7 .9 7 YEL ILLUMINANT NOT DISPLAYED WHT W +9 7 . 8 7 C E . OR DELTA E W e- 1 . 3 7 T -115.8 E 41.89 . C 20.78 L +23.45 H +25.79 . E 23.67 u +22.46 L+ 1 2 . 3 3 v +6.89 . E 15.98 a +18.59 L +23.48 b +8.75 Yxy x+. 2 8 9 0 .
3.3 Illuminant/Observer Selection There are eight different illuminants and two observers to choose from. 1) To enable illuminant selection: Hold down [ILLUM] until "SELECT ILLUMINANT" is displayed. SELECT ILLUMINANT X Y Z C2 Y 2.87 FUNCTION X 4.12 Z 2.41 ILLUM DIF CAL HOLD 2) The active illuminant & observer are displayed. F12 2 F11 2 2 Press [ILLUM] to select a different illuminant. Note: Illuminant F2 represents a cool white fluorescent lamp.
Illuminant/Observer Selection...continued 3) To exit press [FUNCTION]. C 10 XYZ Y 2.81 When "Function Key" is pressed, the instrument will automatically convert the stored spectral references (if any) to tristimulus for the different illum/obs selected. The unit will also ask if you would like the references to be cleared. If you do not want the references cleared (or you do not have any entered), disregard the procedure below. X Z 4.08 2.
3.4 Absolute Measurements The 948 and 968 can perform absolute measurement in XYZ (RGB), Yxy, L*a*b*, L*u*v*, L*C*h°, Whiteness, & Yellowness. > Helpful Hint: If you are going to measure something like a textile, you will receive better results if you use the averaging function (see Section 3.6). Also, while measuring a textile, take several measurements in a circular format. > If the ∆ is displayed, press [DIF] to activate absolute mode.
3.5 Difference Measurement The 948 and 968 can measure the difference between a sample color and a reference. In order to measure these differences the reference must first be entered into memory. There are 24 different locations to store references. The reference can be entered numerically using the key pad, or by measuring the reference color. > The ∆Whiteness and ∆Yellowness reference color can only be entered by measurement.
Difference Measurement...continued > When entering references with any illuminant other than C2, Yellowness and Whiteness (per ASTM E313) are not calculable. > Once a reference has been set, changing between CIE Lab or Hunter Lab; Lch (ab) or Lch (uv); and XYZ or X%Y%Z%, the references will not be automatically adjusted. Note: You can set all reference locations to OFF by: •Activating difference mode. •Hold down [DIF] until reference entry is activated, then simultaneously press [ILLUM] and [FUNCTION].
Entry of Reference values - By measurement . . . continued CURSOR 4) Select the reference location. If the cursor is not blinking next to the reference location, press [DIF] until it does. Hold down [DIF] and press [t] to decrement thru the reference locations or press [s] to increment. 5) Measure the reference color. REFERENCE SPACE REF 03 Y 4.45 FUNCTION X 6.16 Z 2.69 DIF ILLUM CAL DECREMENT INCREMENT + + REF 03 Y 4.45 C2 X 6.16 Z 2.
Entry of Reference Values... By Numeric Entry > Whiteness & Yellowness reference values can not be entered via the keyboard. 1) Select desired Illum/Obs (see Sec. 3.3). 2) Press [FUNCTION] to select desired measurement space. X Y Z C2 Y+ 2.87 FUNCTION REF VALUES - ENTER or MEASURE" is displayed. The unit will first display the previous entered reference values for the last selected reference location. The reference location is momentarily displayed.
Entry of Reference values - By Numeric Entry . . . continued 5) The cursor will blink over the active value that can be edited. Enter the numbers for each value. CURSOR REF 03 Y 2. 87 •The [DIF] key advances the cursor to the next value to be edited. X 4.12 Z 2.4 1 FUNCTION DIF ILLUM CAL ADVANCE •The [DIF] key is used in conjunction with [t] to decrease and [s] to increase the value. Note: Hold [DIF] depressed then press either [t] or [s] to change value.
3.5.2 Taking A Difference Measurement > If the ∆ is not displayed, press [DIF] to activate difference mode. > The reference color must first be entered into memory, refer to Section 3.5.1. > If reference selection is not set to auto, select the correct reference location before following the procedure below (refer to Section 3.5.1). > If the desired illuminant/observer is not displayed, refer to Sec. 3.3. 1) Press [FUNCTION] to select desired measurement space. XYZ C2 Y+ 2.87 FUNCTION X +4.12 Z +2.
3.6 CMC Difference Operation CMC is an ellipsoidal tolerancing method which attempts to correlate small measured color differences with visual assessment. CMC provides a single numeric value (∆ECMC) which describes the color difference between a sample and a standard. This allows the use of a single tolerance value for comparing the acceptability of a color match.
CMC Difference Operation...continued 3) Press [FUNCTION] and [ILLUM] at the same time to exit to the main menu. "REFERENCES UPDATED" is momentarily displayed and the procedure is finalized. l 2.00 cf = 1 . 0 0 EXIT c 1.00 FUNCTION ILLUM DIF CAL > If no measurement or entry is made the unit will display "REFERENCES NOT CHANGED." PRESS AT SAME TIME Taking a CMC Difference Measurement Before a CMC difference measurement can be made: • LCh CMC must be set to "ON" in modes (Sec. 5.
3.7 Measurement Averaging Procedure When averaging is activated in setup, averaging operation will occur on absolute measurements, reference entry measurements, and difference measurements. There are two averaging methods that are used: (refer Sec. 5.1 to activate averaging): • SAMPLES AVERAGED - allows you to enter the number of measurements you will make (1-99) at various locations on a sample, to obtain an average value.
Measurement Averaging Procedure . . . continued 4) Center the target window over second area on the sample to measure. TARGET WINDOW X Y Z C2 Y 65.04 5) Lower unit to target window and hold compressed. "READING XYZ C2 1 OF 2" and "2 OF 2" will momentarily be displayed, and then the averaged data. X 63.91 Z 23.02 AVERAGE CALCULATED 6) The display will show the average absolute values for XYZ. READING XYZ 2 OF 2 C2 READING XYZ 1 OF 2 C2 FUNCTION ILLUMINANT XYZ Y 65.
3.8 Store Data Operation The data storage feature allows the unit to store measurement data for up to 500 readings. (Refer to Sec. 5.4 to activate.) There are four basic operations of the store data function that can be utilized in the store data function. • Group Selection - group tagging allows you to assign group numbers to the stored values. Group tagging is only accessable through RCI with a software package such as SpectroStart.
Store Data Operation . . . continued 3) Measure second sample. XYZ C 2 Y 3.52 is momentarily displayed, then the measurement. "READING XYZ C2" X 3.45 Z 4.29 DATA STORED 2 OF 500 XYZ C 2 Y 3.52 Upon release of the read head, "DATA STORED 2 OF 500" and then the measurement is displayed. X 3.45 Z 4.29 C2 READING XYZ SEND DATA XYZ C 2 Y 3.52 4) Press both [ILLUM] and [DIF] at the same time. FUNCTION X 3.45 Z 4.
Store Data Operation . . . continued DELETE LAST MEASUREMENT 6) Press [DIF] to delete the last measurement made (this step can be repeated to delete several of the last measurements). If "NO" is selected, press [FUNCTION] and advance to Step 7. NO DELETE LAST ? 1 YES LAST DELETED NO DELETE LAST ? 2 YES NEXT STEP PRESS Number of Measurements Stored CLEAR ALL DATA 7) Press [DIF] to clear all stored measurement data taken. If "NO" is selected, press [FUNCTION] to return to normal operation.
3.9 Display Messages The most likely reasons for error messages to display are described below. If an error message is consistently displayed, contact X-Rite or an Authorized Service Center. Power-Up Messages "MEMORY LOST" is displayed when the instrument determines that the data in the (battery backed up) RAM has been corrupted, if the internal lithium battery on the P.C.B. is bad, or if a new EPROM has been installed.
Display Messages . . . continued "CALIBRATION - NOT CHANGED" is displayed when the user decides to terminate the calibration procedure by simultaneously pressing [FUNCTION] and [ILLUM]. "CALIBRATION - UPDATED" is displayed after the calibration procedure has been successfully completed. "CAL ERROR ### - CELL CHANGE" make sure that calibration plaque is clean and instrument is positioned exactly on the white spot.
4. Calibration The 948 & 968 should be calibrated to the X-Rite standard the first thing each day and every four hours of operation thereafter. However, a "NEED CALIBRATION" message will appear in the display: •If the calibration procedure has not been performed for 24 hours. •If there is a 10°C change in temperature since the last calibration. •If zero reflectance is measured improperly. •If the lamp output changes.
4.1 Positioning the 968 Onto the X-Rite Standard You must set the 948/968 on the white standard so that the maximum amount of the bottom rubber pad of the shoe resides on the standard, and the target is centered on the circle. If you do not, the unit may rock slightly and cause an erroneous reading of the standard. 1) Center the target window on the White circle, making sure that the rubber pad is completely on the standard and is down flat. BOTTOM VIEW 2) Take the measurement.
Shown below is an IMPROPER METHOD of measuring the standard.
X-Rite Reflection Standard X-Rite ® Reflection Standard P/N 968-62 Serial No. CXXXXXXXP-XXXXX Date XX/XX/XX WAVE [nm] REFL [%] 390 400 410 420 430 440 450 460 480 500 520 540 560 580 600 620 640 660 680 700 710 62.10 76.70 81.88 85.02 85.99 86.12 86.48 86.74 87.05 87.42 87.36 87.08 86.72 86.25 85.71 85.18 84.52 84.02 83.35 82.69 81.99 CALIBRATION CHECK C/2 (WHITE) L* a* b* Instrument Model No. Instrument Serial No.
4.2 Calibrating to the White Standard > If you are changing aperture size: Do steps 1, 2, & 5a thru 5d. Skip steps 3 & 4. 1) Press both [FUNCTION] and [ILLUM] at the same time. X Y Z C2 Y 2.87 FUNCTION X 4.12 Z 2.41 DIF ILLUM CAL PRESS AT SAME TIME 2) Select "YES", press [DIF]. The copyright and software version are momentarily displayed. Ver XXXX 1990 X-Rite Copyright CALIBRATE ? YES NO FUNCTION ILLUM DIF CAL PRESS READ CAL WHITE 3) "READ CAL WHITE" is displayed.
Calibrating to a White Standard . . . continued 4) Measure the WHITE patch on the standard. You must hold the unit depressed until all five readings have been completed. CALIBRATION UPDATED CAL READING 5 OF 5 > You must set the unit on the standard so that the maximum amount of the bottom rubber pad of the shoe resides on the standard (refer to Section 4.1). CAL READING 4 OF 5 CAL READING 3 OF 5 "CAL READING 1 OF 5" thru "CAL READING 5 OF 5" is displayed; then "CALIBRATION UPDATED.
Zero Reflectance/Aperture size Setting . . . continued READ CAL WHITE EXIT CHANGE 5a) Press [CHANGE]. FUNCTION DIF ILLUM CAL PRESS 5b) Press [NO]. NO NEW CAL VALUES? YES DIF FUNCTION ILLUM CAL PRESS APERTURE = 8.0mm TOGGLE NEXT 5c) Press [NEXT] if the aperture size is correct (go to step 5d). FUNCTION DIF ILLUM CAL If the aperture size is wrong press [DIF] to change size. 4.0mm 8.0mm 20 mm > If you change aperture size you will be sent back to step 5a after pressing [NEXT].
5. 5.1 Setting System Parameters Averaging The averaging feature allows the unit to make several measurements from the same and/or different locations on a sample. This will allow you to have a better overall average of a sample color. The averaging feature has two functions: • SAMPLES AVERAGED - allows you to enter the number of measurements you will make (1-99) at various locations on the sample, to obtain an average value.
Averaging . . . continued 3) Select "YES", press [DIF]. SET AVERAGING ? YES NO FUNCTION ILLUM DIF CAL PRESS 4) Select the amount (1-99) of sample measurements required. • Hold down [DIF] and press [t] to decrease the sample measurement number or press [s] to increase the sample measure number. • Press [FUNCTION] to advance to the Sub Average number entry.
5.2 Operation Parameters Operation setup allows you to select various options, and individually turn on/off certain functions. When a function is turned off it will not be displayed during operation. C2 XYZ Y 2.87 1) Press both [FUNCTION] and [ILLUM] at the same time. FUNCTION X 4.12 Z 2.41 DIF ILLUM CAL > To exit Operation Setup: P r e s s [FUNCTION] and [ILLUM] at the same time and the unit will return back to normal operation.
Operation Parameters setup . . . continued 6) Select Yxy ON or OFF. Yxy ON NEXT TOGGLE PRESS 7) Select Lab (CIE), Lab (Hunter), or OFF. Lab (CIE) ON NEXT TOGGLE PRESS 8) Select L*u*v* ON or OFF. Luv ON NEXT LCh (ab) ON NEXT TOGGLE PRESS 10) Select Whiteness ON or OFF. WHT ON NEXT YEL ON NEXT AUTO REF ON NEXT > Exit via [NEXT] OR press [FUNCTION] & [ILLUM] at the same time to return back to normal operation.
5.3 RS232 I/O Parameters Your instrument comes equipped with a serial port that allows data to be transmitted/received to/from an external device. Listed below are the available I/O parameters. • "RCI ON/OFF" (Remote Control Interface) - enables or disables the ability to externally control the 948/968 via the I/O port. • "BAUD" - determines the input/output rate (characters per second) of the I/O port. Available outputs are: 300, 600, 1200, 2400, 4800, and 9600.
RS232 I/O setup...continued 3) Select "YES", press [DIF]. SETUP I/O ? YES NO DIF FUNCTION ILLUM CAL PRESS > The basic procedure for the following steps is to press [TOGGLE] to set the I/O parameter. Press [NEXT] to advance to the next step. RCI ON NEXT 4) Select RCI ON or OFF. TOGGLE PRESS BAUD 1200 NEXT 5) Select the BAUD Rate. TOGGLE PRESS 6) Select Carriage Return or without Line Feed.
5.4 Format Output Parameters This procedure allows you set the output format of the RS232 port. Refer to Section 6 for sample print outs. Listed below are the available options. • AUTO PRINTOUT/STORE DATA/PRINTOUT OFF - determines if data will be transmitted after each measurement, stored until transmitted, or not allow data transfer. AUTO PRINTOUT - enables the unit to transmit data after each measurement. STORE DATA - allows the unit to store up to 500 measurements.
Format Output setup . . . continued 2) Select "NO", press [FUNCTION] four times. CALIBRATE ? YES NO FUNCTION DIF ILLUM CAL PRESS FOUR TIMES 3) Select "YES", press [DIF]. NO FORMAT OUTPUT ? YES FUNCTION DIF ILLUM CAL PRESS > The basic procedure for the following steps is to press [TOGGLE] to set the format. Press [NEXT] to advance to the next step. 4) Select Auto Printout, Store Data or Printout Off.
6. Printing Data The RS232 parameters for the 948/968 serial interface are configured in Section 5.3. The variables are: •Remote Control Interface (On/Off) •Baud Rate (300, 600, 1200, 2400, 4800, or 9600) •Carriage Return (With or Without Line Feed) •Handshake (Off, Pin 5 CTS, Pin 5 Busy, or XON/XOFF Enabled) The manner in which output data is arranged is determined by the Format Output Parameter settings in Section 5.4.
Print Example 1: • Printer ON • All Print ON • Header ON • References ON • Decimal Point ON > If Header, References, or Decimal Point are turned OFF, they will not print. > If All Print is OFF, only the data for the active color space will print.
Print Example 2: • Computer ON • All Print ON • Header ON • References ON • Decimal Point ON > If Header, References, or Decimal Point are turned OFF, they will not print. > If All Print is OFF, only the data for the active color space will print See Print Example 3, below.
• • • • • Spectral ON All Print ON Header ON References ON Decimal Point ON > If Header, References, or Decimal Point are turned OFF, they will not print- See Print Example 5, below. > All Print does not affect the print out when Spectral in on.
7. Changing Apertures X-Rite has three different aperture kits available for the 948 & 968, and they are listed below. • 8mm/4mm Aperture Kit P/N 968-100-08 • 8mm UV Excluded Aperture Attachment P/N 968-61-08E • 20mm Aperture Kit P/N 968-100-20 Each aperture kit includes the aperture, sensor nose, extra target windows, and a specially designed aperture wrench. APERTURE INSTALLATION 1) Unscrew the two thumb screws [1], then remove the nose piece [2].
Changing Apertures . . . continued 3) Unscrew the existing aperture [5] with the aperture wrench [6]. Note: The aperture wrench tool has two sides, one side fits the 8mm aperture and the other fits the 20mm aperture. The aperture wrench has two pins that fit into the holes in the aperture. INSERT PINS INTO THE HOLES IN THE APERTURE, THEN TURN COUNTERCLOCKWISE TO REMOVE. [6] [5] [7] 4) Screw in the new aperture using the aperture wrench. IMPORTANT! The new aperture must be clean.
8. Maintenance 8.1. Troubleshooting The X-Rite 948/968 is covered by a one year limited warranty (excluding ni-cad batteries) and should be referred to the factory or authorized service center for repair within the warranty period. Attempts to make repairs within this time frame may void the warranty. X-Rite provides a factory repair service to their customers. Because of the complexity of the circuitry all circuit repairs should be referred to the factory or an authorized service center.
8.2. Optics Cleaning The target window and optics should be cleaned once a week in normal environments; and more often in dirty or dusty environments. Target Window 1. Remove dust and lint from target window by wiping it with a clean, lint free cloth, slightly moistened with water. Optics 1. Unscrew the two thumb screws [1] and remove the nose piece [2]. Remove dust from aperture with camel hair brush or a camera lens cleaner [3]. [2] [3] [1] 2.
8.3. Battery Replacement 1. Set the 948/968 on it’s side and lock shoe in place. The shoe must be locked. 2. Slide battery access door [1] toward bottom of unit and remove. 3. Disconnect plug [4] and pull battery pack [2] out of unit. 4. Remove old AA NI-CAD batteries [3], and install six fresh AA NI-CAD (recognizing proper polarity). 5. Slide battery pack [2] into unit, and reconnect battery plug [4]. Reinstall battery access door [1]. 6. Unlock shoe. 7.
8.4. Target Window Replacement 1. Remove old target window [2] by pushing downward from top of shoe [1]. 2. Place the instrument on end and align the target window so that the word "front" runs parallel with the top edge of the shoe [1]. 3. Insert one edge (top or bottom) of the new target window [2] in the opening of the shoe [1]. 4. Place the other side of the target window [2] in the shoe [1] by snapping into position.
8.5. Lamp Replacement Due to the circuit complexity, alignment procedures, and test equipment required - The read lamp should only be replaced by X-Rite or an authorized X-Rite Service Center. The lamp is monitored for intensity and failure warnings will be displayed if a problem occurs. The lamp should last approximately one million measurements and is covered by a one year limited warranty. Refer to the Limited Warranty statement on page iii.
A1 Measuring Functions: Display: Measuring Geometry: Measuring Area: Light Source: Specifications Absolute CIE XYZ X%Y%Z% CIE Yxy CIE LAB Hunter LAB CIE LUV CIE LCH Difference ∆(XYZ) ∆(X%Y%Z%) ∆(Yxy) ∆(L*a*b*) ∆(Lab) ∆(L*u*v*) ∆(L*C*H*) Indices: ∆E*ab ∆E ∆E*uv ∆E*(ab, CMC, or uv space) Whiteness per ASTM E313 Whiteness & Tint per CIE Yellowness per ASTM E313 Yellowness per ASTM D1925 2 row by 16 character Supertwist dot matrix LCD 0°/45°, fiber optic pickup, multi-sensor array 8.0mm & 4.
Specifications . . . continued Storage Temp. Range: Weight: Dimensions: Accessories Provided: -4° - 122°F (-20° - 50°C) 2.3 lbs. (1050 grams) 3 3/16" H x 3" W x 7 3/4" L (81mm H x 76mm W x 197mm L) Calibration Standard Operation Manual Reference Guide AC Adaptor Carrying Case X-Rite standards are traceable to the National Institute of Standards and Technology. This product covered by U.S. Patent 4,591,978 and other patents pending. Specifications and design subject to change without notice.
A3 Factory Presets Shown below are the factory presets for the Averaging, Operation, I/O, and Format parameters.
A4 Spectrophotometer Stand X-Rite has an optional mounting fixture available (P/N 968-80). The fixture can hold items that are a maximum of four inches wide, or two inches to the center of the object.
A5 Color Check The color check procedure will help you track instrument color performance to assure measurement accuracy. Initially, the three patches on the standard should be measured once a day for a period of 10 days to determine the reference values. Thereafter, a periodic check (once a week depending on usage) is all that is required. Located on the back of the reference standard envelope is a color check label. The reference data should be recorded there for quick reference.
Color Check . . . continued 7) After 10 days average the white, blue, and brown values and enter data in the designated place on the color check label. 8) Enter date, illuminant, observer, aperture size, temperature, instrument model, and serial number on color check label. Note: Temperature of the reference standard should be maintained (± 2°C) throughout color check sequence.
COLOR CHECK RECORD Date: Temperature: Reference Values Date L* Illuminant: Aperture Size: White a* b* L* 60 Observer: Model-S/N: Blue a* b* L* Brown a* b*
X-Rite, Incorporated----World Headquarters 3100 44th Street, S.W. • Grandville, Michigan 49418 • U.S.A www.x-rite.com • (616) 534-7663 Toll-Free U.S.
