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1830-C 
Optical Power Meter

I

NSTRUCTION

M

ANUAL

New Front Cover IN-07941  1/24/01  11:32 AM  Page 1

Содержание 1830-C

Страница 1: ...1830 C Optical Power Meter INSTRUCTION MANUAL...

Страница 2: ...1830 C Optical Power Meter...

Страница 3: ...on of Warranty This warranty does not apply to defects resulting from modification or misuse of any product or part This warranty also does not apply to fuses batteries or damage from battery leakage...

Страница 4: ...r EN55011 Group 1 Class A EN50082 1 IMMUNITY Electrostatic Discharge per IEC 1000 4 2 severity level 3 Radiated Emission Immunity per IEC 1000 4 3 severity level 2 Fast Burst Transients per IEC 1000 4...

Страница 5: ...figuring the Computer Interface 4 2 5 Power Up Auto Calibration 5 Section 3 System Operation 3 1 Introduction 6 3 2 Digital Display 6 3 3 Front Panel Key Functions 8 3 3 1 LOCAL R S Local Mode Run Sto...

Страница 6: ...erence Powers dB 17 4 5 2 2 Logarithmic Measurements Using 1 mW Reference dBm 17 4 5 3 Relative Measurements 18 4 6 Common Measurement Errors 19 Section 5 Computer Interfacing 5 1 Introduction 20 5 2...

Страница 7: ...kout on off 35 L Local lockout query 35 Mn Service Request Enable Register mask 36 M Service Request Enable Register query 37 O Auto Calibration 37 Q Status Byte Register query 38 Rn Range setting 39...

Страница 8: ...7 RS 232C Cable Connections 22 8 RS 232C Baud Rate Selector Switches 23 9 GPIB Address Selector Switches 25 10 The 1830 C s Status Reporting System for the GPIB Bus 49 11 Simplified Functional Block D...

Страница 9: ...azards or laser hazards and are familiar with safety precautions required to avoid possible injury Read the instruction manual thoroughly before using to become familiar with the instrument s operatio...

Страница 10: ...onnector type degree C degrees Centigrade Hz Hertz cycles per second k kilo 103 kHz kilohertz k kilo ohms micro 10 6 m milli 10 3 mA milliamps mV millivolts n nano 10 9 nA nanoamps nm nanometers RH re...

Страница 11: ...8 Full Scale Current3 2 nA 20 nA 200 nA 2 A 20 A 200 A 2 mA 5 mA Gain 1000 M 100 M 10 M 1 M 100 k 10 k 1 k 100 Resolution 0 1 pA 1 pA 10 pA 100 pA 1 nA 10 nA 100 nA 1 A Analog Bandwidth 35 Hz 35 Hz 1...

Страница 12: ...I ISTOREF dB ZERO Disabled 10 log I I I I Z STOREF Z dB ZERO Enabled I ISTOREF REL ZERO Disabled I I I I Z STOREF Z REL ZERO Enabled Where I detector current Iz detector background current defined whe...

Страница 13: ...xii...

Страница 14: ...wn in Figure 1 below FP3 FH1 818 FA2 818 ST CM 818 UV CM 818 SL CM 818 IR CM Optical Power Meter Model 1830 C INPUT 818 FA3 SMA 818 FA3 ST 818 FA3 FC 818 F SL 818 F IR RANGE RANGE AUTO AVG STOREF BEEP...

Страница 15: ...Section 3 System Operation Section 4 Performing Measurements Section 5 Computer Interfacing Section 6 Remote Command Set Section 7 Troubleshooting and Maintenance Section 8 Factory Service 1 3 Unpacki...

Страница 16: ...tage by setting the voltage selection switches on the 1830 C back panel to match the nominal local voltage See Figure 2 Plug the AC line power cord to the rear of the 1830 C and then connect the cord...

Страница 17: ...pin assures the proper orienta tion of the calibration module Detector Cable BNC Calibration Module Figure 3 Connecting a Detector with its Calibration Module Plug calibration module into this port I...

Страница 18: ...e meter will display 0257nm as the wavelength The auto calibration process involves measuring amplifier offset voltages which arise from aging and temperature effects These offsets are then appropriat...

Страница 19: ...he operation of all keys are discussed later in this section 3 2 Digital Display The 1830 C has a large 4 1 2 digit back lit liquid crystal display LCD which can be seen at large angles of view Figure...

Страница 20: ...n zeroing is activated HOLD No new readings will be displayed nor be available on the remote interface bus REM The meter has received a command query either through the IEEE 488 or the RS 232C bus LLO...

Страница 21: ...m Relative STOREF S Stores last measurement for future dB or relative measure ments AVG F1 F3 Cycles between Slow Medium or Fast numerical averaging of readings that are within a certain percentage of...

Страница 22: ...ment A second ZERO key press turns off the ZERO annunciator and stops offset subtraction 3 3 3 UNITS Display Units Measurements can be displayed in units of watts W decibels dB or dBm and relative REL...

Страница 23: ...ngle measurement is acquired that is not within 9 counts of the oldest mea surement the averaging algorithm starts over not retaining any of the previous measurements 3 3 6 Wavelength Increment Pressi...

Страница 24: ...his key turns the variable frequency beeper on and off The frequency of this tone varies as a function of the optical power being measured The real time audible feedback is very helpful when trying to...

Страница 25: ...is in the auto range mode just prior to pressing this key the meter will be forced into the manual range mode and the range will be decremented 3 4 Default Meter Configuration Upon power up or pressi...

Страница 26: ...f the calibration procedure vary with each detector model but a detailed description of the calibration results is supplied with each individually calibrated detector In general detector calibration a...

Страница 27: ...measured by the 1830 C and should be considered when making sensitive measurements Ambi ent light can be distinguished from dark current or the detector meter noise floor by turning off or blocking th...

Страница 28: ...d calibration data to determine the range of wavelengths available for the detector being used The responsivities stored in the calibration module span only the wavelength range appro priate for the d...

Страница 29: ...proximately zero but will fluctuate depending upon the variations in the amount of light reaching the detector and the detector dark current fluctuations d Illuminate the detector with the optical sig...

Страница 30: ...correction by pressing the ZERO key Display should read approximately zero but will fluctuate depending upon the variations in the amount of light reaching the detector and the detector dark current f...

Страница 31: ...lustrates this relationship REL reading Net Applied Power Net Referenced Power STOREF I Iz R ISTOREF IZ R where I detector input current Iz detector background current defined when the ZERO key was pr...

Страница 32: ...ambient light was ZERO ed before the measurement was made Wavelength Calibration Check that the proper wavelength has been set Detector Saturation Check that the optical power density remains below th...

Страница 33: ...eral Guidelines sections for using either the GPIB Section 5 5 3 or RS 232C Section 5 4 3 interfaces These sections include important information on using these interfaces properly 5 2 Computer Interf...

Страница 34: ...rminated with a LF All responses sent by the 1830 C are terminated with a LF GPIB Command Termination Commands and queries sent to the 1830 C through the GPIB must be terminated with a NL EOI NL is eq...

Страница 35: ...PIN PIN NO 8 3 2 20 7 6 4 5 22 DCD RXD TXD DTR GND DSR RTS CTS RI CARRIER DETECT RECEIVE DATA TRANSMIT DATA DATA TERM READY SIGNAL GROUND DATA SET READY REQUEST TO SEND CLEAR TO SEND RING IND TO 1835...

Страница 36: ...to the desired parameters as shown in Figure 8 0 0 Baud Rate 9600 1 0 Baud Rate 4800 0 1 Baud Rate 2400 1 1 Baud Rate 1200 1 2 3 4 5 6 7 8 1 0 GPIB Address RS232C Not Used Default RS 232C Baud Rate 96...

Страница 37: ...mode for RS 232C communication is with echo disabled Since the 1830 C s output buffer size is limited to ten bytes it is recom mended that when a query is made the response to that query be read befo...

Страница 38: ...21 1 0 1 0 1 22 0 1 1 0 1 23 1 1 1 0 1 24 0 0 0 1 1 25 1 0 0 1 1 26 0 1 0 1 1 27 1 1 0 1 1 28 0 0 1 1 1 29 1 0 1 1 1 30 0 1 1 1 1 Default GPIB Address 4 1 2 3 4 5 6 7 8 1 0 GPIB Address RS232C Not Us...

Страница 39: ...mmand that invokes a response from the 1830 C All queries are terminated with a question mark Since the 1830 C s output buffer size is limited to ten bytes it is recom mended that the response to a qu...

Страница 40: ...returns 0 1 B0 Beep off B1 Beep on B Beep query returns 0 1 C Clear Status Byte Register D Data Query E0 Echo off E1 Echo on E Echo query returns 0 1 F1 Filter S Slow F2 Filter M Medium F3 Filter F F...

Страница 41: ...ts See Appendix A for details R0 Auto Range R1 Signal Range 1 Highest signal range R2 Signal Range 2 R3 Signal Range 3 R4 Signal Range 4 R5 Signal Range 5 R6 Signal Range 6 R7 Signal Range 7 R8 Signal...

Страница 42: ...lone n 1 Use the calibration module s responsitivity values associated with the photodetector attenuator combination Type integer Related Commands A Attenuator query A Attenuator query Function Report...

Страница 43: ...ction This query informs the user whether the 1830 C s beeper is on or off Syntax B or b Parameter none Returns 0 beeper is off 1 beeper is on Related Commands Bn Turn the beeper on off C Clear Status...

Страница 44: ...es to RS 232C communication only In this mode all the characters that are received over the RS 232C are transmitted echoed back to the user This mode is useful when interfacing the 1830 C to a dumb te...

Страница 45: ...is performed Type integer Related Commands F Filter status query F Filter same as averaging status query Function This query informs the user about the current settings for the filter parameter The f...

Страница 46: ...is in Go mode i e takes new readings Type integer Related Commands G Go query G Go query Function This query informs the user whether the 1830 C is in the Run or Hold mode If the meter is in the Run...

Страница 47: ...klight to the highest intensity level Type integer Related Commands K Query the backlight intensity level K Keypad Display Backlight intensity level query Function This query responds with the current...

Страница 48: ...Ln or ln Parameter n 0 Local lockout is off n 1 Local lockout is on Type integer Related Commands L Query the current status of local lockout function L Local lockout query Function This query informs...

Страница 49: ...h in the byte returned by the serial poll A serial poll will clear the SRQ until it is again asserted by a new event in the Status Byte Register At power up the default is M0 which means that the SRQ...

Страница 50: ...lated Commands Mn Service Request Enable Register Q Status Byte Register query O Auto Calibration Function This command is used to calibrate the 1830 C for future measurements The auto calibration pro...

Страница 51: ...ssage Available MAV Busy Service Request Read Done Bits See Appendix A for details Syntax Q or q Parameter none Returns 0 255 Example Send Q Resp 01 Parameter error Send Q Resp 02 Command error Send Q...

Страница 52: ...nal range for the input signal R8 selects the highest signal range As each range is incremented by one the signal gain de creases by a decade NOTE The lowest range for the geranium 818 IR detector is...

Страница 53: ...the highest signal range Example Send R Resp 1 1830 C is in the lowest signal range Send R Resp 8 1830 C is in the highest signal range Related Commands Rn Set the 1830 C signal range S Store referenc...

Страница 54: ...easurement units S Set the Reference signal power level Wnnnn Set the wavelength of measurement U Units query Function This query informs the user about 1830 C s current measure ment units The units c...

Страница 55: ...The wavelength of the input signal Type integer Range depends on the detector used Example W280 Set the wavelength to 280nm Related Commands W Query the 1830 C s current wavelength setting W Wavelengt...

Страница 56: ...ower readings Syntax Zn or zn Parameter n 0 zero function is off n 1 zero function is on Type integer Related Commands Z Zero function query Z Zero function query Function This query informs the user...

Страница 57: ...rial number at power up power up Power off the meter check that the module is properly inserted and then power up again Display shows OL Indicates that the signal is too large for the selected signal...

Страница 58: ...nual com mands C QB45 link q qbib obj qbib qlb bqlb45 lib C QB45 qb l qbib qlb The pathname for the QBDECL BAS should be modified per the user s computer system Your IEEE application software Use the...

Страница 59: ...ibration accuracy is warranted for a period of 1 year After 1 year the meter should be returned to Newport Corporation for re calibra tion and NIST traceability recertification Newport detectors also...

Страница 60: ...The 1830 C contains no user serviceable parts Its calibration accuracy is warranted for a period of 1 year 8 2 Obtaining Service To obtain information concerning factory service contact Newport Corpo...

Страница 61: ...______________ ____________________________________________________________________________________________________________________________________________________________________________ ____________...

Страница 62: ...49...

Страница 63: ...E 488 1 Service Request SRQ Figure 10 The 1830 C s Status Reporting System for the GPIB Bus The Status Byte Register is used to record a summary of the 1830 C s current condition for the Status Report...

Страница 64: ...Byte Register PARAMETER ERROR This bit goes high whenever a valid command is issued but the command s parameters are out of range e g U9 This bit is cleared by Q or by the C command COMMAND ERROR Thi...

Страница 65: ...when the 1830 C is requesting service When the status byte is read by means of the Q query this bit will be set if any bit in the status byte is set and its corresponding bit is set in the Service Re...

Страница 66: ...s reset while the program is running the 120 program must be restarted so that the ECHO mode will be disabled 130 140 Written By Rakesh Pandit 150 Date June 24th 1994 160 End of Header 170 1000 Beginn...

Страница 67: ...one at a time until a LF character is 5020 read or 2 seconds elapse between consecutive character reads 5030 At end of routine the string read or an error is in RS232IN 5040 BUFFER CHR 0 Initialize BU...

Страница 68: ...GOSUB 5000 Read 1 6090 GOSUB 5000 Read E0 6100 GOSUB 5000 Read timeout because no NL 6110 PRINT ECHO mode disabled 6120 ENDIF 6130 RETURN 6140 7000 timeout Set TIMEOUT ERROR flag Called if t seconds...

Страница 69: ...low the manufacturers instructions for installation of hardware and software Be sure to read the section on setting up the QuickBASIC environment Rename one of the devices DEV4 when running the IBCONF...

Страница 70: ...E port IF INSTR IEEEout 0 THEN If command was a query GOSUB Read IEEE String Read input data on IEEE port END IF END SELECT LOOP WHILE 1 1 RETURN Write IEEE String Write the string IEEEout out to the...

Страница 71: ...N IEEEin 0 THEN If something was read from port PRINT IEEEin print the input string ELSE PRINT Error occurred when reading IEEE 488 port END IF RETURN RETURN timeout Set timeout error flag This routin...

Страница 72: ...slates the conditioned analog input signals into a form usable by the microcomputer The microcomputer performs all necessary system control and calculations required to display the correct reading Cal...

Страница 73: ...60...

Страница 74: ...en certified compliant with ISO 9001 by the British Standards Institution P N 20372 01 Rev H IN 07941 07 00 Printed in the USA Newport Corporation Worldwide Headquarters 1791 Deere Avenue Irvine CA 92...

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