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MKS Oriel Instruments 3502 User Manual Download Page 49

3502 

Optical Chopper System 

 

49 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

© 2022 by Newport Corporation, Irvine, CA. All rights reserved.  

No part of this manual may be reproduced or copied without the prior written approval of Newport Corporation.  

This manual has been provided for information only and product specifications are subject to change without notice. 

Any change will be reflected in future printings.  

Newport Corporation 1791 Deere Avenue Irvine, CA, 92606 USA   

 

 

 

Part No. 90068136

 

 

Summary of Contents for Oriel Instruments 3502

Page 1: ...rt Family of Brands ILX Lightwave Corion New Focus Oriel Instruments Richardson Gratings Spectra Physics P N 90068136 REV B 8 12 2022 Optical Chopper System User s Manual Oriel Instruments Model 3502...

Page 2: ...autions 8 1 3 Location of Labels and Warnings 10 1 3 1 Model 3502 Optical Chopper Controller Rear Panel 10 2 General Information 11 2 1 System Overview 11 2 1 1 Key Product Features 11 2 2 Scope of th...

Page 3: ...User Interface GUI 30 4 2 1 A Quick Start How to Use the New Focus Chopper Application 31 4 3 USB Communication 32 4 4 Command Index and Conventions 32 4 5 Command Description 34 5 Troubleshooting 41...

Page 4: ...3502 Optical Chopper System 4 7 3 Request for Assistance Service 46 7 4 Repair Service 46 7 5 Non Warranty Repair 47 7 6 Warranty Repair 47 7 7 Loaner Demo Material 48...

Page 5: ...Information Label 10 Figure 8 Functional block diagram for Model 3502 Optical Chopper 14 Figure 9 Model 3502 Optical Chopper Head with wheel cover installed 16 Figure 10 Dimensions of Model 3502 Opti...

Page 6: ...ghout this manual This symbol indicates that you should read the associated documentation to determine the nature of any potential hazards and any actions that should be taken against these hazards 1...

Page 7: ...ure above represents a power switch position on the Model 3502 Optical Chopper Controller This symbol represents a Power Off condition 1 1 6 Waste Electrical and Electronic Equipment WEEE Figure 6 WEE...

Page 8: ...There are no user replaceable fuses in this equipment The user must ensure that appropriate current limiting protection is provided by the external AC power line Do not operate this equipment in an e...

Page 9: ...User s Manual thoroughly before attempting to use the Model 3502 Optical Chopper CAUTION The Model 3502 Optical Chopper is designed to be safe when operated under Normal Environmental Conditions as de...

Page 10: ...3502 Optical Chopper System 10 1 3 Location of Labels and Warnings 1 3 1 Model 3502 Optical Chopper Controller Rear Panel Figure 7 Warning Certification and Information Label...

Page 11: ...perform all other operations available through the front panel 2 1 1 Key Product Features A number of advanced features make the Model 3502 Optical Chopper an excellent choice for many applications Ex...

Page 12: ...sical damage that might have occurred during shipment Report any such damage to the shipping agent immediately NOTE Retain original packing materials in case reshipment becomes necessary 2 3 1 What is...

Page 13: ...humidity non condensing 40 C 90 humidity non condensing Storage temperature 0 C 85 humidity non condensing 50 C 85 humidity non condensing Relative Humidity storage 85 Altitude 3000 meters 10000 feet...

Page 14: ...nique minimizes phase noise at the chopping frequency and provides for long term stable chopping with minimal frequency drift Figure 8 shows a block diagram of the Model 3502 Optical Chopper system Pr...

Page 15: ...n the side of the motor mount Do not over tighten the set screws The Model 3502 Optical Chopper head may also be mounted on standard optical bench rods First loosen the two 20 set screws These secure...

Page 16: ...3502 Optical Chopper System 16 Figure 9 Model 3502 Optical Chopper Head with wheel cover installed...

Page 17: ...these wheels are not included in the Model 3502 BASE and must be ordered separately To install or change a wheel first power off the Chopper Controller Secure the chopping head to a work surface Remo...

Page 18: ...2 Optical Chopper System 18 Figure 11 Chopper wheels Top row 2 slot and 60 2 slot wheels Middle row 7 5 slot and 42 30 slot wheels Bottom row 60 slot and 100 slot wheels All wheels are 4 50 114 3 mm O...

Page 19: ...Number Largest Beam Diameter Inner Cover Slot Outer Cover Slot 2 slot 3511 0 295 7 50 mm 0 394 10 00 mm 7 5 slot 3512 0 295 7 50 mm 0 394 10 00 mm 42 30 slot 3513 0 135 3 44 mm 0 138 3 51 mm 60 slot...

Page 20: ...to the Chopper Controller 3 3 1 Power Make sure that that power switch is in the OFF position Connect the male end of the provided AC power cable to the mains supply Connect the female end to the thr...

Page 21: ...control and communication 3 4 Operation When the unit is turned on the unit performs a series of internal verifications the word PASS is briefly displayed on the 5 digit LED numeric display and it sho...

Page 22: ...nize the chopping frequency to the Chopper s internal synthesizer INT the rising edge EXT or falling edge EXT of an externally supplied signal on Sync In The motor s rotational speed may be controlled...

Page 23: ...uter is the chopping frequency and Finner is undefined Mode Setting Fouter locked to OUT 1 OUT 2 H S H S FSync H S Fsync H 7 S Fsync Fsync Fouter Finner Fouter Finner Normal Fsync 5 Fsync Finner Table...

Page 24: ...urce the synthesizer frequency will be restricted to the working range of the particular chopping wheel In H S mode this range will be modified by the user specified values of H and S according to Fma...

Page 25: ...ation 0 is reserved for the factory default settings see the Default Settings section below Set RECALL The user may recall an instrument setup in one of two ways Firstly on power up the instrument wil...

Page 26: ...hen the Chopper is not synchronized to an internal or external sync frequency In addition the UNLCK LED will blink when an external sync frequency exceeds the limits for a particular wheel USB LED The...

Page 27: ...outer Finner with Fouter 7 5 Finner Int Fsync 12 7 Int Fsync i e Fouter Finner with Fouter 7 5 Finner Int Fsync Int Fsync Int Fsync 1 Ext Ext 2 7 Ext Fsync i e Fouter Finner with Fouter 7 5 Finner Ext...

Page 28: ...vides a TTL level signal at frequency H S Fsync In mode the frequency at OUT 1 is Fouter Finner and in NORMAL mode the frequency is 5 Fouter This information is also summarized in Table 2 on page 27 O...

Page 29: ...Power Entry Module The AC power is connected at the power entry module on the rear panel The power module has been chosen for global operation and North American and European power cords are supplied...

Page 30: ...n installing the software on 32 bit or 64 bit operating systems Although the user can choose a custom installation directory the default location is under Program Files New Focus New Focus Chopper App...

Page 31: ...Mode of operation 5 The desired chopping frequency is set by entering the value in Hz in the topmost text entry field and pressing the Set Freq button Similarly the chopping phase H and S can all be...

Page 32: ...command descriptions that follow in the next subsection several conventions are used Some commands may be used to set and query an operating parameter For example the PHS command can be used to set th...

Page 33: ...ynthesizer frequency to three significant digits 4 00 Hz to 99 9 kHz in EXT EXT mode range automatically limited in INT mode PHS Sets the phase delay 180 0 to 179 0 RCL Selects instrument set up for r...

Page 34: ...Query Fsync FR2 Query Fouter FR3 Query frequency of OUT 1 FR4 Query frequency of OUT 2 Example The chopping frequency is 1 23 kHz and the Chopper is in NORMAL mode FR3 Query FR36150 0 Response The fre...

Page 35: ...16 5 05 14 SNP0004 Response The firmware version is 1 16 the firmware date is 5 05 14 and the serial number of the unit is P0004 KEY Description Duplicates the action of pushing a front panel button S...

Page 36: ...ting which instrument set up to recall using the RCL command MEM1 recalls the selected set up Example STO5 Selects location 5 for setup storage MEM0 Saves setup in location 5 RCL1 Selects location 1 s...

Page 37: ...z Only three digits of resolution are available The data is entered in Hz and no decimal point should be included Example OSC54300 Command Sets the internal synthesizer to 543 Hz OSC Query OSC543 00 R...

Page 38: ...MEM1 to recall the instrument set up Example RCL0 Command Select factory default setup for recall MEM1 Command Recalls factory default setup RCL4 Command Select location 4 for setup recall RCL Query R...

Page 39: ...to 9 STO is used with MEMO to store the instrument set up Example STO9 Command Select location 9 for setup storage STO Query STO9 Response Location 9 is selected for setup recall MEM0 Command Recalls...

Page 40: ...sync source to INT SYN Query SYN3 Response Sync source is set to INT WHL Description Set and query the type of chopping wheel being used Syntax WHL Remarks The WHL command sets and queries the type of...

Page 41: ...ppens Check that the power cord is connected to the Chopper Controller Check that the Chopper Head is connected to the Chopper Controller Do not connect the Chopper Head when the Chopper Control unit...

Page 42: ...ll place the instrument into known conditions If the oscillation stops then the signal supplied via Sync In may have been unstable Verify the stability of the input signal with an oscilloscope or freq...

Page 43: ...30 slot 3513 84 Hz 4 48 KHz 150 5 7 5 slot 3512 14 Hz 746 Hz 1000 15 2 slot 3511 4 Hz 213 Hz 2000 50 6 2 Internal Synthesizer Stability 100 ppm after one hour warm up Drift Less than 10 ppm C Accurac...

Page 44: ...e H S Fouter in H S mode OUT 2 TTL level pulse Finner in NORMAL mode Fouter Finner in mode H 7 S Fsync in H S mode 6 5 Phase Shifter Range 180 0 to 179 0 Resolution 0 1 increasing to 0 25 at 6 4 kHz 6...

Page 45: ...s and laser technology and equipment Founded in 1969 Newport is a pioneering single source solutions provider of laser and photonics components to the leaders in scientific research life and health sc...

Page 46: ...s Technical Support Representatives diagnose the problem please note the following Is the system used for manufacturing or research and development What was the state of the system right before the p...

Page 47: ...ir or replace the item If the decision is made to not proceed with the repair only the evaluation fee will be billed If authorization to perform the repair or provide a replacement is obtained the eva...

Page 48: ...WARRANTIES EXCLUSIVE REMEDY THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXCEPT AS EXPRESSLY PROVIDED HEREIN ORIEL MAKES NO WARRANTIES EITHER EXPRESS OR IMPLIED EITHER IN F...

Page 49: ...reproduced or copied without the prior written approval of Newport Corporation This manual has been provided for information only and product specifications are subject to change without notice Any c...

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