Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment • FAST SHIPPING AND DELIVERY • TENS OF THOUSANDS OF IN-STOCK ITEMS • EQUIPMENT DEMOS • HUNDREDS OF MANUFACTURERS SUPPORTED • LEASING/MONTHLY RENTALS • ITAR CERTIFIED SECURE ASSET SOLUTIONS SERVICE CENTER REPAIRS Experienced engineers and technicians on staff at our full-service, in-house repair center WE BUY USED EQUIPMENT Sell your excess, underutilized, and idle used equipment We also offer credit for buy-back
MODEL 370 OPTOMETER P/N 79-10-032 Revision D January 1993 UDT Instruments 8581 Aero Drive San Diego, CA 92123 Tel: (877)532-5800 Fax:(858)576-9286 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.
www.udtinstruments.com Product Warranty Warranty Provisions UDT Instruments warrants the items delivered hereunder to be free from defects in material and workmanship, and to conform to current UDT Instruments specifications at the time of sale. Purchaser shall have a period of one year from date of acceptance of the items to return deficient items to UDT Instruments for correction.
www.udtinstruments.com ADDENDUM: CE MARK EXCLUSIONS 1. The instrument is not intended for use in high humidity, high pollution, or explosive environments. 2. The instrument and related accessories are "CE" compliant when operated in the manufacturer's recommended configuration, and in accordance with the exclusions described in this addendum. UDT Instruments does not accept responsibility for "CE" compliance if the instrument is used in a non-recommended configuration. 3.
CONTENTS Page CAUTIONS 2 SPECIFICATIONS 3 1.0 GENERAL INFORMATION 4 1.1 1.2 1.3 1.4 Introduction Applications Accessories Calibration 4 4 5 5 2.0 PREPARATOIM FOR USE 5 2.1 2.2 2.3 2.4 Inspection Instrument Identification Input Power Requirements Packaging for Shipment 5 6 6 6 3.0 OPERATION 6 3.1 3.2 3.3 3.4 Front Panel Control IEEE-488 Interface Data Format Typical Operation 6 8 11 11 4.0 THEORY OF OPERATION 12 5.
CAUTION Each Model 370 is calibrated at the factory for specific detector and accessories included with the instrument. Do not substitute different detector or accessories without verifying that the calibration is installed in the instrument. The maximum input power level for this instrument, assuming only a radiometric filter is used, is 10mW total or 500mW/ cm2, whichever is less. Beyond these flux levels the detector becomes nonlinear.
SPECIFICATIONS Display Alphanumeric 16 x 2 lines, character liquid crystal, display update rate 2 to 4 readings/second, 4 to 5 significant digits displayed; contrast adjustment provided on rear of display, switch selective electroluminescent backlighting. Controls: 10 touch sensitive controls set instrument function, also programmable through IEEE-488 interface. Push-button power on/off with red LED power indicator. Calibration: Calibration information stored in rear panel mounted EPROM.
UNCERTAINTY @22º C % OF TEMPERATURE FULL SCALE READING DRIFT CURRENT RESOLUTION + 2 COUNTS% OF READING __________ ______________ ________ ___________ FRONT END AMPLIFIER RESPONSE 10%-90%, mS ____________ INPUT RESISTANCE OHMS ______ 1nA 10nA 100nA 1µA 10µA 100µA 1mA 0.1pA 1pA 10pA 100pA 1nA 10nA 100nA 150mS 150mS 150mS 150mS 120mS 120mS 120mS <1000 <1000 <10 <10 <1 <1 <1 1.0 GENERAL INFORMATION 1.1 Introduction 0.7% 0.7% 0.15% 0.11% 0.15% 0.11% 0.13% 0.05% 0.05% 0.02% 0.02% 0.02% 0.02% 0.
Equipment such as Scanning Monochromators 1.
1 – Plug in Calibration Module A/R – Detector Assemblies Ordered Separately 2.2 Instrument Identification The instrument’s model and serial numbers are on a label on the rear panel. The instrument history is maintained in a serial number file at UDT Instruments. 2.3 Input Power Requirements The instrument operates on 90-132VAC or 180-264VAC 47-440Hz, 10VA nominal. Line voltage is selected by a switch on the rear panel power supply circuit board.
Linear: For normal average measurements. Log Ratio: For logarithmic average ratio measurements of the signal to the previous measurement, which is saved when using this function. To change the reference value, change mode to linear, start measurement, adjust signal and change the mode back to log ratio. Ratio: Performs linear ratio of the signal to the previous measurement, which is automatically stored when using this function.
Display Illumination: 3.2 Turns the display back light on or off. IEEE-488 Interface 3.2.1 The IEEE interface allows communications between the instrument, a talker/listener, and a controller such as a Hewlett Packard desk top computer equipped with the HPIB interface or any system with an IEEE-488 interface. As a listener, the instrument terminates communication when ASCII line feed (LF) or end or identify (EOI) is received. Carriage return, commonly sent by HP systems is received and ignored.
Displays the current calibration. OUTPUT 704 ; “G” Asks for data. If the instrument is in operation, data will be available at the end of the measurement sequence; Or OUTPUT 704 ; “HF” Asks for data and halts. ENTER 704 ; A$ Enters data as a string Or ENTER 704 ; A Enters data as a floating point number. MODEL 370 REV: D Page 9 of 26 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.
TABLE 1 IEEE CONTROL CODES A B0 B1 B2 B3 D E0 E1 F Set Autorange restore screen blank screen Turn on backlight Turn off backlight set mode, DL log, DN linear, DR ratio, DG logratio. digital reading analog bar reading send current reading Data is equal to input current divided by responsitivity G Go H Halt K Display Caldata Kx select Caldata x M set Manual mode, does not change range Mx set gain to specific exponent 3, 4, 5, 6, 7, 8, 9 R Send responsivity; R+x.
3.3 Data Format The format of the data string consists of fourteen characters: ±D.DDDDE+DD_S The first twelve characters are data in floating point notation with five significant digits plus sign, following the E is the exponent which is two significant characters plus sign. The fourteenth characters is a space, separating the status character. These characters are ignored if the data has been entered as a floating point number.
overrange. Push “auto/ manual”, then the up/down keys to locate the best range, start operation by pressing “start”. 3.4.5.2 Zero Zero stores the present reading for subtraction from the next readings. It is useful when measuring LED or laser power in the presence of ambient light. Turn off, or block the source to be measured while the instrument is operating, then perform the “zero” operation. 4.0 THEORY OF OPERATION 4.
interface buffers provide I/W communications through the IEEE 488 interface. Switch SW1 at the rear panel determines the IEEE bus address for the instrument. Binary coding is read during power on initialization. 4.1.3 Software At power on, a start up routine initialixes the system and displays the power on message.
No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. Description Type Number of cals C System Voltage Reference B Germanium C Unit B Message 1 B Message 2 B Start of Wavelength A End of Wavelength A Step of Wavelength A Address for Next Cal C Address for Previous Cal C Cal Data floting point, use minus for common B Cathode and conventional current measurement. Calibration Note: Repeat numbers 3 to 12 for next cals. A.
6.0 USERS GUIDE 6.1 Introduction The purpose of this guide is to describe the most common applications and how typical measurements should be performed with the UDT Instruments Radiometers. The instrument is extremely versatile and has been ergonomically engineered for ease of use. The instrument typically uses a 1cm silicon planar diffused detector which is extremely rugged and stable.
sets to measure the blackbody temperature of incandescent sources, red photometric filters to precisely match the red response of the human eye, fiber optic probes, reflex viewing modules to convert the radiometer into a teleradiometer or microradiometer and many other accessories. In addition special head assemblies are available which allow the user to measure ultraviolet light precisely, as well as heads for measuring HeliumNeon laser compliance and light emitting diode output.
sensitivity is required and when the source is within the detector acceptance angle. 6.2.4 6. Follow the zeroing procedure outlined in the operating section of the manual. 7. Adjust the range switch until a non-full scale reading is obtained. When measuring time varying sources it is advisable to view the analog output (on instruments so equipped) with an oscilloscope to ensure that the fron end amplifier does not saturate. 8. See Section 7.
6.3.4 4. Position the head in the laser beam or in the measurement field. (See Figure E-5.) 5. Refer to the calibration sheet. This will indicate which channel should be used, what multiplication factors are applicable and what attachments or other conditions apply. 6. Follow the zeroing procedure outlined in the operating manual. 7. Adjust the range switch until a non-full scale reading is obtained. 8. Verify that the radiant flux and irradiance are less than the values stated in step 1. 9.
multiple reflections (0.5W max). 2500 Laser Integrating Sphere 1,000 Not spectrally flat, needs single point calibration (100W max). 2525 LED Integrating Sphere 1,000 Not spectrally flat, needs single point calibration (10W max). 2550 Laser Attentuator 100 Not spectrally flat, needs single point calibration (0.5W max). 2575 Mini Integrating Sphere 500 Not spectrally flat, needs single point calibration (10W max).
6.4.4 6. Follow the zeroing procedure outlined in the operating section of the manual. 7. Adjust the range switch until a non-full-scale reading is obtained. When measuring time varying sources it is advisable to view the analog output (on instruments so equipped) with an oscilloscope to insure that the front end amplifier does not saturate. 8. For luminance measurements or sources smaller than 15º use the 1120 reflex viewing module.
By using either the UDT Instruments Model 129 LED shade or by making a laboratory setup as shown in Figure E-7 the luminous or radiant intensity of an LED or lamp may be measured. The procedure is similar to that of Section 6.3. 6.5.2 Transmission and Absorption Measurements By interposing a sample between the light source and detector, the transmission or absorption of a sample may be measured. 6.6 Bibliography IES Lighting Handbook, Kaufman & Christensen, Illuminating Engineering Society, 345 E.
B = brightness of object measured in candelas/sq.ft. I = = illumination on camera image plane in footcandles. 2 B/(4(f#) ) Illumination at object plane if camera is removed and film placed directly at location of camera image plane = 6.8 B (footcandles) = 10.76 B (lux) Conversion Factors LUMINANCE (PHOTOMETRIC BRIGHTNESS) CONVERSION FACTORS 1 NIT = 1 STILB 1 CANDELA/SQUARED METER = 1 CANDELA/SQUARED CENTIMETER 1 APOSTILB (INTERNATIONAL) = 0.
ILLUMINATION CONVERSION FACTORS 683 lumens/watt at 555 nm (max.) 1 watt-second 1 phot 1 footcandle = 1 lumen/sq.ft. 1lux = = = = 7 10 ergs 1 lumen/sq.cm. 1 lumen/sq.m. 1 metercandle Multiply number of To Obtain Number of footcandles lux phot milliphot footcandles 1 0.0929 929 0.929 lux 10.76 1 10,000 10 phot 0.00108 0.0001 1 0.0001 milliphot 1.076 0.1 1,000 1 MODEL 370 REV: D Page 23 of 26 Artisan Technology Group - Quality Instrumentation ...
MODEL 370 REV: D Page 24 of 26 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.
MODEL 370 REV: D Page 25 of 26 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.
MODEL 370 REV: D Page 26 of 26 Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.
Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment • FAST SHIPPING AND DELIVERY • TENS OF THOUSANDS OF IN-STOCK ITEMS • EQUIPMENT DEMOS • HUNDREDS OF MANUFACTURERS SUPPORTED • LEASING/MONTHLY RENTALS • ITAR CERTIFIED SECURE ASSET SOLUTIONS SERVICE CENTER REPAIRS Experienced engineers and technicians on staff at our full-service, in-house repair center WE BUY USED EQUIPMENT Sell your excess, underutilized, and idle used equipment We also offer credit for buy-back