1820B RF Mount Heater Instruction and Service Manual
Contents
1. 0340345 35MM 3H1O SSIMN SACH 1 z 1 E 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 e FAX 440 466 6110 e www tegam com 5 2 TEGAM Section V Maintenance and Servicing 18208 106 RF DUAL MOUNT TEMPERATURE CONTROLLER HEATER CACUT Document No TEGAM INC 10 Tegam Way Geneva OH 44041 DUT THE DPM MEASURES 0 TO 1 999 V 3 EI Thursday March 07 2013 2 eat Due uwen ULTiOsO i i PLACE CERAMIC 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com 5 3 TEGAM Section V Maintenance and Servicing a SEET D 1 3 i d 55 D 5 g a p i i GH i f S Fels i E ig 1 JE a ad Vuen POWER SUPPLY PINS PLACE CERAMIC ren CAPACITORS CLOSEST TO 2i 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com 5 4 TEGAM Section V Maintenance and Servicing E Zeg Em x E M 4 2 a Ei at i Hd bd SS E Si 5 H p HO zu m IN p n SEN H H 8 3 14 201 Tuesday February 12 2013 z H 1 H CHEN SEN zt werk 2 SS gt SC 5 tH 3 H 5 ae LES E 2585 Si Be 85 10 TEG2. TEGAM Table 1 1 Physical and Electrical Specifications Power Source This product is intended to connect to a power source that the voltage between the supply conductors or between either supply conductor and ground will not apply more than the voltage rating for the particular power supply A protective ground connection by way of the grounding conductor in the power cord is essential for safe operation Line Voltage Selection The power supply in a Model 1820B operates with a line voltage of 100 to 240 VAC 47 to 63 Hz 100 VA max CAUTION DO NOT APPLY POWER TO THE INSTRUMENT BEFORE READING THIS SECTION Check the Power Cord Make sure the power cord supplied with the Model 1820B is not frayed broken or cracked A damaged power cord is a fire and electrical hazard If the power cord is damaged it should be replaced Use the Proper Fuse To avoid fire hazard use only the correct fuse type as specified for the AC power supply in the unit The correct fuse for the 1820B is a 250 V 1 5 Amp slow blow fuse The fuse is located just below the power cord socket Before replacing the fuse place the Model 1820B front panel power switch to the OFF position and remove power cord on the back of the Model 1820B To replace the fuse gently slide out the fuse drawer Remove the old fuse and snap a new one into the fuse holder Reinstall the fuse by simply pushing the fuse drawer back into its original position The fuse drawer should snap into pla
3. Most cold thermistor mounts typically require 60 to 90 minutes to reach an internal temperature of approximately 60 C This cold current is a function of the mount type and construction Once this internal temperature is reached the control circuit sources a warming current to maintain that temperature Some thermistor mounts may require 230 mA to stay warm whereas most take less than 200 mA The key to the mount being ready is that the DC substituted power has reached a steady state value Refer to Figure 3 1 for a graphical view Likewise the measured current displayed by the 1820B s digital panel meters can provide an indication that a mount s internal temperature has reached 60 C Observing and recording the measured current when a thermistor mount is first connected will provide the cold current value Note that a thermistor mount if disconnected momentarily immediately starts to cool When reconnected the mount again requires its cold current until the control circuit regulates to the 60 C internal temperature The time period for this regulation is typically several minutes versus 60 minutes or longer stated above This cold current then reduces to the warming 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com 31 TEGAM Section Ill Principlesof Operation current value Monitoring this current change from the 1820B s digital panel meters can provide this indication As stated above and shown
4. TEGAM s technicians will assist in identifying and correcting the problem in the quickest possible manner Use a copy of the Expedite Repair amp Calibration Service form provided on the next page 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com 1 TEGAM Section VII Preparation for Shipment Expedite Repair amp Calibration Form Use this form to provide additional repair information and service instructions The Completion of this form and including it with your instrument will expedite the processing and repair process RMA Instrument Model Serial Company Number Technical Phone Contact Number Additional Contact Info Repair I nstructions C Evaluation Calibration Only Repair Only Repair amp Calibration 2540 Extra Charge Detailed Symptoms Include information such as measurement range instrument settings type of components being tested is the problem intermittent When is the problem most frequent Has anything changed with the application since the last time the instrument was used etc 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 e FAX 440 466 6110 e www tegam com 7 2 TEGAM Section VII Preparation for Shipment Returning Instrument for Service Use the information in this section if you need to return your instrument to TEGAM Package Instrument
5. Use in Proper Environment Normal calibration laboratory practice dictates that the environment should be closely controlled This will minimize errors introduced by temperature and humidity changes A nominal temperature as specified in Table 1 1 provides a good working condition Controlled temperatures also stabilize the aging process of the standards Do Not Use in Explosive Environments CAUTI ON The 1820B is not designed for operation in explosive environments Ensure Power Switch is Accessible CAUTI ON Ensure that the POWER switch is easily accessible at all times and nothing is in place that would impede proper use Do Not Operate Without Covers WARNING This device should be operated with all panels and covers in place Operation with missing panels or covers could result in personal injury 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com 21 TEGAM Section Ill Principles of Operation 1820B Metering Operation The 1820B uses a variable voltage control circuit as the regulating system for an RF thermistor mount s heating elements This is a closed loop system that uses the internal temperature as the feedback mechanism The current supplied to the heating elements are monitored and displayed A 3 digit panel meter DPM with 1 mA resolution is used for this display You will observe that the display shows 6 or 7 counts without connection to any device That is without a load or a therm
6. 44041 Telephone 440 466 6100 Fax 440 466 6110 E mail sales tegam com 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 e FAX 440 466 6110 e www tegam com TEGAM Table of Contents Section Page Introduction Purpose and He huele EE 1 1 Capabilities EEN 1 1 E elt E 1 1 List of Items ege see eeeeg e hee Eege 3 List of Optional 508 Ehe Eege 1 3 KO de tege EE 1 4 Cont ct ThfOE d EES 1 4 Ill Preparation for Use and Installation Unpacking and Inspechon cece e eee eee eee eee estes eeeeneeeaes 2 1 Use in Proper Environment 2 1 Ill Principles of Operation 18208 Metering Operation cider geg ee ER 3 1 Understanding tbe 1820B seed edd eu 3 1 IV Operating Instructions Start up EE ed E 4 1 Connecting the Proper Sensor 4 2 V Maintenance and Servicing ge EEN ee ne DE 5 1 RF Dual Mount Temperature Controller Gchematc 5 2 3 5 DPM Interface Schematic A 5 5 VI Reprogramming Memory Sanitization Procedure cceeceee eee ence ee eeeeeeeeeeeeenes 6 1 VII Preparation for Shipment Preparation for Repair or Calibration Service 7 1 Returning Instrument for Service 7 3 Package Instrument for Ghpment AA 7 3 VIII Storage OK Le UE En UE 8 1 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 e FAX 440 466 6110 e www tegam com TEGAM Safety Information amp Precautions The following safety information applies to both operation and service personnel Safety precautio
7. AM WAY GENEVA OHIO 44041 440 466 6100 e FAX 440 466 6110 e www tegam com 5 5 TEGAM Section VI Reprogramming Memory Sanitization Procedure There is no memory of any kind to be sanitized with the 1820B 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com 1 TEGAM Section VII Preparation for Shipment Preparation for Repair or Calibration Service Once you have verified that the cause for 1820B malfunction cannot be solved in the field and the need for repair and calibration service arises contact TEGAM customer service to obtain a Return Material Authorization RMA number You can contact TEGAM customer service via the website www tegam com or by calling 440 466 6100 All Locations OR 800 666 1010 United States Only The RMA number is unique to your instrument The RMA both identifies the instrument and your specific service request Equally important is a detailed written description of the problem It is recommended that you attach this document to the instrument Many times servicing is unnecessarily delayed due to a lack of repair instructions or a detailed description of the problem This description should include information such as measurement range and other instrument settings component type s being tested are the symptoms intermittent conditions that may cause the symptoms has anything changed since the last time the instrument was used etc Any detailed information provided to
8. TEGAM 1820B RF Mount Heater Instruction and Service Manual PN 1820B 900 01 Publication Date March 2013 REV A 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com TEGAM TEGAM is a manufacturer of electronic test and measurement equipment for metrology calibration and production test We also provide repair calibration and other support services for a wide variety of test and measurement equipment including RF power sensor calibration systems RF attenuation measurement systems ratio transformers arbitrary waveform generators micro ohmmeters LCR meters handheld temperature calibrators thermometers humidity and temperature control devices and more TEGAM also repairs and calibrates test and measurement equipment formerly manufactured by Electro Scientific Industries ESI Gertsch Keithley Instruments Lucas Weinschel and Pragmatic Instruments A complete list can be viewed on our Product Service Directory at www tegam com For more information about TEGAM and our products please visit our website at www tegam com or contact one of our customer service representatives at sales tegam com or 800 666 1010 Copyright TEGAM Inc 2010 No part of this manual may be reproduced in any form or by any means including electronic storage and retrieval or translation into a foreign language for any other purpose without the prior written consent of TEGAM Inc 10 Tegam Way Geneva Ohio
9. abilities The Model 1820B maintains the mount at operating temperature reducing warm up time The operator can leave the mounts connected and they remain at operating temperature ready for connection to the Model 1830A RF Power Meter at any time to begin taking measurements Specifications Includes performance characteristics description power and utility information and environmental information Temperature Controller Bias Power Temperature Sensitivity Mount Warm Up Time Ambient Temperature Dynamic Range Internal Mount Temperature Warm Up Drive saturated Indicator Accuracy Current Measurement 2uW C per hour 2 hours 12 C to 40 C 54 F to 104 F 60 C 140 F nominal 12 14 V 200 mA minimum Current mA 2 0 of reading 3 counts 2x4 pin miniature microphone audio connector Connectors Environmental Specified Temperature Range Operating Temperature Storage Temperature Power Requirements 0 C to 55 C 32 F to 131 F 40 C to 75 C 40 F to 167 F 100 to 240 VAC 47 to 63 Hz 100 VA max Input Power Fuse 250 V 1 5 Amp slow blow Weight 2 kg 4 4 Ib Physical Dimensions Height 8 89 cm 3 5 in Width 21 59 cm 8 5 in Depth 33 02 cm 13 in Dependant on Mount Design and adjustments 2Applies for current levels greater than 10 mA 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 e FAX 440 466 6110 e www tegam com 1 1
10. ce Grounding the Equipment This product is grounded through the grounding conductor of the power cord WARNING To avoid electrical shock or other potential safety hazards plug the power cord into a properly wired receptacle before using this instrument The proper grounding of this instrument is essential for safety and optimizing instrument operation Danger Arising from Loss of Ground WARNING If the connection to ground is lost or compromised a floating potential could develop in the instrument Under these conditions all accessible parts including insulating parts such as keypads and buttons could develop a hazardous voltage and put the user at risk A 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 e FAX 440 466 6110 e www tegam com 1 2 TEGAM List of Items Furnished Item Power Cord User Maintenance Manual Statement of Calibration Table 1 2 1820B Packing List List of Optional Accessories Accessory Part Number Heater Cable 4 pin mini 48 or 15 CA 11 48 CA 11 15 Heater Cable 4 pin large 48 or 15 CA 10 48 CA 10 15 Sensor Cable 15XX 25XX 48 or 15 CA 21 48 CA 21 15 Rack Mount Kit Single Unit 1830 910 Rack Mount Kit Dual Unit 1830 911 Table 1 3 18208 Accessory List 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 e FAX 440 466 6110 e www tegam com 1 3 TEGAM Warranty I nformation TEGAM Inc warrants this product to be free from defects
11. for Shipment Use the following steps to package the instrument for shipment to TEGAM for service 1 Complete the EXPEDITE REPAIR amp CALI BRATI ON FORM previous page and attach it to the instrument Please be as specific as possible about the nature of the problem Send a copy of any or all of the following information o Any error messages that appeared on the instrument display o Any information on the performance of the instrument 2 Use the original packaging materials or a strong shipping container The carton must be both large enough and strong enough to accommodate the instrument and allow at least three to four inches on all sides of the instrument for packing material 3 Surround the instrument with at least three to four inches of packing material or enough to prevent the instrument from moving in the carton 4 Seal the shipping container securely with strong nylon adhesive tape 5 Mark the shipping container FRAGILE HANDLE WITH CARE to ensure careful handling Caution Instrument damage can result from using packaging materials other than those specified 6 Retain copies of all shipping papers 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com 7 3 TEGAM Storage Requirements When the Model 1820B is to be stored for extended periods pack the instrument into a container Place container in a clean dry temperature controlled location If instrument is to be stored in e
12. he 1820B be discovered it is recommended that certain steps be taken in order to assist our service department in identifying the cause of the malfunction Below is a summary of some commonly observed symptoms and some possible causes No Power Check power cord Check fuse No Serviceable Parts 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 e FAX 440 466 6110 e www tegam com 5 1 Section V Maintenance and Servicing TEGAM ONITIOUINOO Fii SI L6n 3 0 1 O4 JYV 33 SiHV4 PU AWO ONV SZT 1HYd 206 a Y mro 1 0 i 9 Sr HM 3400 THL 9 eNDt 30H DNUMON sana Qm 619 Ze Ed W S Weda Z S9 Nid WvO31 WNINHSL Kee 5 6 x ONNOH9 HVIS ONY 610012 N d Wv931 ONISNOH 1 ps e ES w i L ASt D HO IMS 13NYd NOH O 1 NOLLOSNNOO Loo INOLLO3NNOO CN HIN ONY n8 1 NIJYISNIS WW 00 S 38 TIVHS DNIOVdS 3TIOH H31N32 O1 831N32 ONIHIM BOd 03193NNOO INN OV ed MS WINE EXE lo dos NOILMOd NO 0601 02 80 Nid XION IVNIWH3 1 334930 2 Q3Ssv8 WW 00 S DNIOVdS HOLO3NNOO ONY PPOE 9 01 Nid X310 ONISNOH l 0281 MS Nid WvO31 HO IMS 13NVd 1NOH3 OL NOLLOSNNOO ATddNS A St ONY OW UVa V AU O31N3S34d3u Sy 39V L10 IVH1 OL S32 3 43 TW ONV Vous BV NIONVIGL Y A9 3 Je 1 39V L10 ANY 40 EE
13. in Fig 3 1 there is a notable change between the cold and warming currents The warming current will typically be maintained within a few milliamps based upon the environment s ambient temperature HEATER VOLTAGE VALUE V V OT T 40 Mu POWSUB 1 Heater Current x10 A 0 200 400 600 800 1000 1200 Number of Sample 10 sec sample Figure 3 1 1820B Warm up Relationship 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com 3 2 TEGAM Section IV Operating Instructions Start up Procedure After unpacking the 1820B and setting up in the proper operating environment plug in the AC power cord Connect the proper cable and thermistor mount and turn on the 1820B Connecting the Proper Sensor There are many thermistor based RF power sensors available The Model 1820B is designed to heat all TEGAM thermistor mounts Sensor Cable 15XX 25XX 48 or 15 CA 21 48 CA 21 15 Heater Cable F113X 48 or 15 CA 11 48 CA 11 15 Heater Cable M113X 48 or 15 CA 10 48 CA 10 15 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com 4 1 TEGAM Section V Maintenance and Servicing Troubleshooting The TEGAM INC Model 1820B has been designed to provide many years of trouble free performance However there are some instances where harsh operating environments or excessive physical strain may cause premature failure Should a malfunction of t
14. in material and workmanship for a period of one year from the date of shipment During this warranty period if a product proves to be defective TEGAM Inc at its option will either repair the defective product without charge for parts and labor or exchange any product that proves to be defective TEGAM Inc warrants the calibration of this product for a period of one year from date of shipment During this period TEGAM Inc will recalibrate any product which does not conform to the published accuracy specifications In order to exercise this warranty TEGAM Inc must be notified of the defective product before the expiration of the warranty period The customer shall be responsible for packaging and shipping the product to the designated TEGAM service center with shipping charges prepaid TEGAM Inc shall pay for the return of the product to the customer if the shipment is to a location within the country in which the TEGAM service center is located The customer shall be responsible for paying all shipping duties taxes and additional costs if the product is transported to any other locations Repaired products are warranted for the remaining balance of the original warranty or 90 days whichever period is longer Warranty Limitations The TEGAM Inc warranty does not apply to defects resulting from unauthorized modification or misuse of the product or any part This warranty does not apply to fuses batteries or damage to the instrume
15. istor mount connected the instrument displays non linear value of 6 to 7 mA This is normal operation and is neither an offset nor error This non linearity is due to the operation of the specific current monitoring integrated circuit used within the design When the instrument measures a current greater than 7 mA the performance is linear and conforms to the stated accuracy specification Typically a thermistor mount s heating elements require 160 mA or more to operate effectively These currents ensure linear and valid measurements as shown on the 1820B s digital panel meters Understanding the 1820B Heating Process The Model 1820B is designed for continuous operation therefore no further operator action is required for precise temperature control of the mount s The 1820B is variable voltage control circuit When a thermistor mount is connected to the 18208 the heater circuit will supply nominally 13 Vdc 1 Vdc Heater current is then a function of the internal mount temperature This current will reach a maximum with a cold room temperature mount and then decrease as the internal heating elements warm up The DC substituted power changes significantly during this warm up period When the mount s heating elements reach design temperature the control circuit reduces the heater voltage to maintain an internal temperature of 60 C You will observe a dip in heater current at that point after which the current change is minimal NOTE
16. ns and warnings may be found throughout this instruction manual and the equipment These warnings may be in the form of a symbol or a written statement Below is a summary of these precautions Terms in This Manual CAUTION statements identify conditions or practices that could result in damage to the equipment or other property WARNING statements identify conditions or practices that could result in personal injury or loss of life Terms as Marked on Equipment CAUTION indicates a personal injury hazard not immediately accessible as one reads the marking or a hazard to property including the equipment itself DANGER indicates a personal injury hazard immediately accessible as one reads the marking Symbols As Marked in This Manual AN This symbol denotes where precautionary information may be found As Marked on Equipment CAUTION Risk of Danger DANGER Risk of Electric Shock Earth Ground Terminal On Off Frame or Chassis Terminal Earth Ground Terminal eH Boer Ose Alternating Current 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com TEGAM Purpose and Function The Model 1820B RF Mount Temperature Controller provides a stable power source for one or two Precision RF Power Standards mounts Key functions of the 1820B e Replaces the 1820 RF Mount Heater e Compatible with all TEGAM thermistor power standards Cap
17. nt caused by battery leakage Contact I nformation TEGAM Inc 10 Tegam Way Geneva OH 44041 PH 440 466 6100 FX 440 466 6110 EMAIL sales tegam com WEB http www tegam com Document publishing dates may lag product changes Visit www tegam com to download the latest version of this manual 10 TEG AM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 www tegam com 1 4 TEGAM Section Il Preparation for Use and Installation Unpacking and Inspection Each 1820B is put through a series of electrical and mechanical inspections before shipment to the customer Upon receipt of your instrument unpack all of the items from the shipping carton and inspect for any damage that may have occurred during transit Report any damaged items to the shipping agent Retain and use the original packing material for reshipment if necessary Upon Receipt inspect the carton for the following items Model 1820B Mount Heater Model 1820B Operating and Service Manual CD P N 1820B 901 Calibration Certificate Power Cord Mounting The Model 1820B is shipped with four feet mounted to the bottom cover When the Model 1820B is placed on a bench or table these feet support the instrument The Model 1820B can also be rack mounted in a standard 19 rack using the optional rack adapter kit 1830 910 for a single 1820B and kit 1830 911 to rack 1820B and 1830A side by side NOTE It is recommended to remove all 4 feet prior to rack mounting
18. xcess of 90 days place desiccant with items before sealing container 10 TEGAM WAY GENEVA OHIO 44041 440 466 6100 FAX 440 466 6110 e www tegam com 3 1
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