Manual - IET Labs, Inc.
Contents
1. PRECISION INSTRUMENTS FOR TEST AND MEASUREMENT 4 1413 Precision Decade Capacitor User and Service Manual Copyright O 2003 IET Labs Inc 1413 im May 2003 E IET LABS INC Standards e Decades Strobes Sound Level Meters Bridges Formerly manufactured by 534 Main Street Westbury NY 11590 TEL 516 334 5959 800 899 8438 FAX 516 334 5988 Ge n Rad www ietlabs com Contents O ill CH TEE V CAUTION Tc TP V Section INTRODUCTION u 1 Ll rien EE l EEN eeneg l 1 3 Controls and Connectors att l 1 4 Inspection and Unpacking ooooocccccuuononononononononcnnnnonononononnnnnos 2 Section 2 SEECIEICATIONS usa rue 3 Section 3 OPERATION PROCEDURE REDIMI Biniinn 4 AD E E RIES 4 SN Eu 4 AS o o o 5 3 3 1 Three Terminal Capacitor use 5 Section 4 EES Ee 6 Al Cire uit Ree e 6 42 Frequency ELE TE 6 Section 5 SERVICE EE 7 Ss Customer SERIE ee f 5 2 Instrument EGO LUTTE leen ae rauen 7 Section 6 MAINTENANCE coan alien 8 6 1 Minimum Performance Standards ssssss 8 AMC TO 8 6 1 2 C ap aCilance eines 8 6 1 3 Terminal apaeltal E ltda 8 6 1 4 Insulation Resistance oe oot t dtes 9 O 2 ACTUS ee eet 11 6 3 Knob Removal and Replacement oooooooooooccnncccnnnnnnnnnnnnnnos 11 Section 7 PARTS LISTS AND DIAGRAMS eee eere ee eee e eene eese ette eas 12 Figures Figure 1 1 Elementary schematic diagram of the Type 1413 Decade Capacitor Connections for all2. 0480 9703 which includes all hard ware necessary for mounting the instrument in a stan dard 19 in rack or cabinet refer to Table 3 1 Or der the Rack Adaptor set alone if a bench model is to be converted for rack mounting The dimensions of both the bench and relay rack models of the 1413 are shown in Figure 3 1 and are also listed in Section 2 3 2 Mounting The 1413 may be ordered enclosed in a cabinet for bench use P N 1413 9700 If ordered for rack n B INL NEN Bench Model A 10 25 32 E B 11 31 32 Ge BENCH MODEL DIMENSIONS IN INCHES E j je p B FRONT PANEL END VIEW cd Rack Model Q 10 21 32 S 1 1 2 T 5 7 32 RACK MODEL DIMENSIONS IN INCHES FRONT PANEL END VIEW 4172 1 Figure 3 1 Dimensions of the bench and relay rack models 4 OPERATING PROCEDURE 1413 Series Table 3 1 PARTS INCLUDED IN RACK ADAPTOR SET P N 0480 9703 Fig Hardware Set Includes CAUTION Remove the cabinet only when converting the instru ment from bench to rack mounting or vice versa Use extreme care Do not change the position of the leads or components as doing so may alter the calibration IET recommends taking accurate spot readings be fore and after this procedure in order to verify that the instrument s electrical characteristics have not been affected Cover the unit with a plastic sheet when working on the cabinet Clean the inside of
3. 24 capacitors are similar to those for the three capacitors shown ooooocccocooooooooooooccnnnnnnncnnnnnnnnnoss l Figure 1 2 Front panel on the Capacitor Six 11 position switches with knobs and dials to set desired value of capacitance between HIGH and LOW terminals 2 Figure 1 3 Connection on the rear panel of the 1413 2 Figure 3 1 Dimensions of the bench and relay rack models 4 Figure 6 1 Top interior view of the Capacitor esses 10 Figure 7 2 Schematic circuit diagram for the 1413 Precision Decade Ca pacitor Switches are shown in zero position 12 WARRANTY We warrant that this product is free from defects in material and workmanship and when properly used will perform in accordance with applicable IET specifications If within one year after original shipment it is found not to meet this standard it will be repaired or at the option of IET replaced at no charge when returned to IET Changes in this product not approved by IET or application of voltages or currents greater than those allowed by the specifications shall void this warranty IET shall not be liable for any indirect special or consequential damages even if notice has been given to the possibility of such damages THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUD ING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANTIBILITY
4. OR FITNESS FOR ANY PARTICULAR PURPOSE N WARNING N OBSERVE ALL SAFETY RULES WHEN WORKING WITH HIGH VOLTAGES OR LINE VOLTAGES Dangerous voltages may be present inside this instrument Do not open the case Refer servicing to qulified personnel HIGH VOLTAGES MAY BE PRESENT AT THE TERMINALS OF THIS INSTRUMENT WHENEVER HAZARDOUS VOLTAGES 45 V ARE USED TAKE ALL MEASURES TO AVOID ACCIDENTAL CONTACT WITH ANY LIVE COMPONENTS USE MAXIMUM INSULATION AND MINIMIZE THE USE OF BARE CONDUCTORS WHEN USING THIS INSTRUMENT Use extreme caution when working with bare conductors or bus bars WHEN WORKING WITH HIGH VOLTAGES POST WARNING SIGNS AND KEEP UNREQUIRED PERSONNEL SAFELY AWAY N CAUTION N DO NOT APPLY ANY VOLTAGES OR CURRENTS TO THE TERMINALS OF THIS INSTRUMENT IN EXCESS OF THE MAXIMUM LIMITS INDICATED ON THE FRONT PANEL OR THE OPERATING GUIDE LABEL 1413 Series Section 1 Introduction 1 1 Purpose The Type 1413 Precision Decade Capacitor is both a high quality wide range standard and a reliable com ponent for systems It can be used as a bench model for versatility or it can be rack mounted This six decade capacitor features fine adjustment over a wide range of capacitance with excellent ac curacy Any value in the range of 0 to 1 111 11 uF can be set with a resolution of 1 pF Other units up to 10 000 uF are available consult IET 1 2 Description The six decades have steps of 1 10 100 1000 pF an
5. cabinet readout dials Dimensions w x h x d 17x 5 59 x 11 96 in 432 x 142 x 304 mm Accuracy 0 05 0 5 pF at 1 kHz rack 19 x 5 22 x 10 9 in 483 x 133 x 505 mm a Weight Bench 23 lb 10 5 kg net 29 lb 13 5 kg Stability 0 01 0 1 pF per year shipping rack 24 lb 11 kg net 30 lb 14 kg ship Temperature coefficient lt lt 20 ppm C from 10 to 50 C IS L LLHERLLCM VJ 1 Zero Capacitance 0 1 pF en en BAT A A a uv LA CG Voltage Rating 500 V pk max up to 10 kHz gt eE y re mran i con SS LEET 1 pF to 101 pF toj 1001 pF to 2001 pFto 0 1 uF to a E 100 pF 1000 pF 2000pF O1uF 1 11111 uF 2 E Dissipation en Factor max IO Hz 100 Hz thee 10 pn 100 triz 1 MHz at 1 kHz insulation FREQUENCY 1413 en t HHHH after 2 m inr Terminal Capa 5 0 001 tty citance max Sub UU high to guard 200 pF 2 E EE low to guard 120 pF z am a SE SES arr Interface Connections 2 rear mounted bnc connec 3 TYPICAL D CHANGES VS FREQUENCY 0 0000 tors adaptable to most other types e ole dia pe owe W FREQUENCY 14122 Available 0480 9703 Rack Adaptor Set to convert bench models to rack models Catalog Number Description 1413 9700 Bench Model 1413 9701 Rack Model 0480 9703 Rack Adaptor Set SPECIFICATIONS 1413 Series Section 3 Operating Procedure 3 1 Dimensions mounting P N 1413 9701 it is shipped with Rack Adaptor Set P N
6. pF 5 pF 1989 pF 5 pF 4989 pF 5 pF Air Dielectric 2 7 19 6 pF Air Dielectric 2 7 19 6 pF Air Dielectric 2 7 19 6 pF Air Dielectric 2 7 19 6 pF 10 000 pF 22 5 pF 20 000 pF 5 pF 20 000 pF 5 pF 05 uF 12 5 pF 0 1 uF 12 5 pF 0 2 uF 50 pF 0 2 uF 50 pF 0 5 uF 125 pF IET Part No 4380 3500 4380 3500 4380 3500 4380 3600 4910 1180 4380 3700 4380 3700 4380 3700 4380 3700 4410 0335 0505 4030 0505 4031 0505 4031 0505 4032 4380 3600 4380 3600 4380 3600 4380 3600 0505 4033 0505 4034 0505 4034 0505 4035 4380 3700 4380 3700 4380 3700 4380 3700 0505 4036 0505 4037 0505 4037 0505 4038 0505 4039 0505 4040 0505 4040 0505 4041 1413 Series 13 1413 Series MECHANICAL PARTS LIST Front View See Fig 1 2 IET Description Part No Cabinet asm includes 4181 2901 Bail Gasket mat l 0051 0006 Foot left front Foot right front Foot amp r rear Part of foot bail kit Knob Dial assembly 350020 Cap knob 350019 Rear View See Fig 1 3 IET Description Part No Connector bnc isolated Std 31 10 800 2540 03 Other types optional Connector bnc 31 221 UG 1094 Other types optional Cover Plate 1413 8190 14 PARTS LISTS AND DIAGRAMS
7. to Guard 56 10 Table 6 2 Connections for Terminal Capacitance Measurements Connection Bridge L to 1413 HIGH Bridge H to outer shell of 1413 LOW Bridge GND to inner conductor of 1413 LOW Bridge H to shell and L to inner conductor of 1413 HIGH Bridge GND to shell and inner conductor of 1413 LOW Bridge L to 1413 LOW Bridge H to shell of 1413 HIGH Bridge GND to inner conductor of 1413 HIGH C38 C35 C28 C25 i j AANA ER Sa 53 52 Lead Type Patch cord Shielded clip lead Single banana plug patch cord Shielded clip leads Patch cord with alligator clips Patch cord Shielded clip lead Single banana plug patch cord Figure 6 1 Top interior view of the Capacitor MAINTENANCE Ref Des CAPACITORS Cl C2 C3 C4 C5 Cll C12 C13 C14 C15 C21 C22 C23 C24 C25 C26 C27 C28 C31 C32 C33 C34 C35 C36 C37 C38 C4 C42 C43 C44 C51 27 C53 C54 PARTS LISTS AND DIAGRAMS ELECTRICAL PARTS LIST Description Air Dielectric 1 4 5 0 pF Air Dielectric 1 4 5 0 pF Air Dielectric 1 4 5 0 pF Air Dielectric 1 7 8 7 pF Quartz Var 0 6 1 8 pF Air Dielectric 2 7 19 6 pF Air Dielectric 2 7 19 6 pF Air Dielectric 2 7 19 6 pF Air Dielectric 2 7 19 6 pF Ceramic 33 pF 5 NPO 500V 96 3 pF 1 pF 196 0 pF 1 pF 196 0 pF 1 pF 496 0 pF 1 3 pF Air Dielectric 1 7 8 7 pF Air Dielectric 1 7 8 7 pF Air Dielectric 1 7 8 7 pF Air Dielectric 1 7 8 7 pF 986 1 pF 22 1 pF 1989
8. al Capacitor When the 1413 is used as a three terminal capacitor the outer conductors shells of the two bnc connec tors must be connected together to provide complete shielding If binding post connections are desired these can be provided by standard adaptors plugged into the bnc connectors on the rear of the 1413 Plug the adaptors into the 1413 with the shield binding posts adjacent to each other These shield posts can then be connected together with a shorting link 1413 Series Section 4 Theory 4 1 Circuit Description Each decade consists of four capacitors with values in the ratio of 1 2 2 5 They are connected in parallel in different combinations to provide ten equal steps of capacitance Individual capacitors that are not used at a particular setting of the switches are completely disconnected from the circuit and their high side is connected to the inner or guard shield The inner shield and the wiring are arranged to keep the ca pacitance at the zero setting to a very low value lt 0 1 pF and to keep the capacitance from HIGH to case and from HIGH and LOW to the inner shield to aminimum An elementary schematic is shown in Figure 1 1 and the complete schematic circuit diagram is given in Figure 7 1 4 2 Frequency Characteristics Typical variations of capacitance and dissipation fac tor with frequency are shown in Section 2 THEORY 1413 Series Section 5 Service 5 1 Customer Service T
9. d 0 01 and 0 1 F Air capacitors are used for the two lower decades with precision silvered mica ca pacitors for the others Air trimmers are used for trim ming the two lowest silvered mica decades The connections to the inner shield and to the case are shown in Figure 1 1 Low terminal to guard and detector input capacitances are obtained by dividing the shielding into two parts When the two parts are connected together the 1413 becomes a well shielded three terminal capacitor with extremely low zero ca pacitance The connections are made by means of BNC connectors on the rear of the cabinet The in ner contacts provide the connections to the capaci tors The outer shells connect to the shields and when INTRODUCTION connected together form the third terminal of the ca pacitor The stability of the 1413 refer to Specifications is such that it should not require readjustment with nor mal service However should it become desirable the four lower decades contain trimmer capacitors that are accessible for this purpose refer to Section 5 4 COAXIAL CONNECTORS LOW CASE SHIELD 1413 3 Figure 1 1 Elementary schematic diagram of the Type 1413 Decade Capacitor Connections for all 24 capacitors are similar to those for the three capacitors shown 1 3 Controls and Connectors The controls and connectors on the front and rear of the 1413 are shown in Figures 1 2 and 1 3 1413 Series 1 4 Inspection and Unpac
10. he IET warranty attests to the quality of materials and workmanship in our products For application assistance or if difficulties occur our engineers will assist in any way possible If you cannot eliminate the difficulty please e mail FAX or phone our Ser vice Department giving full information ofthe trouble and of steps taken to remedy it Be sure to include the type and serial number of the instrument In the US call 800 475 1220 or 617 969 0804 for technical support 800 899 8438 or 516 334 5959 for customer service 516 334 5988 for FAX www ietlabs com SERVICE 5 2 Instrument Return Before returning an instrument to IET for service please call our Service Department at 800 899 8438 for a Return Material Authorization RMA Supply a Purchase Order Number or Credit Card informa tion to insure expedient processing Units under war ranty will be repaired at no charge For any questions on repair costs or shipping instructions please con tact our Service Department at the above number To safeguard an instrument during shipment please use packaging that is adequate to protect it from dam age 1 e equivalent to the original packaging and mark the box Delicate Electronic Instrument and also with the RMA number Material should be sent freight prepaid to IET Labs Inc 10 Dedham Street Newton Highlands MA 02461 Attention Service Department 1413 Series Measurement HIGH to Case HIGH to Guard LOW
11. king Inspection If the shipping carton appears damaged contact the carrier immediately and request that their agent be present when the instrument is unpacked If the instrument appears to be damaged when unpacked have the agent witness its condition take photos of the instrument and carton and retain the carton until the matter is resolved Perform an electrical check immediately to determine if any internal damage has occurred and file any required claims with the car rier It may be necessary to return the instrument to IET for evaluation repair estimate and actual repair Unpacking The instrument is wrapped in plastic and desiccant may be included if the environmental con ditions and destination warrant Do not unwrap the instrument until ready to use or install For bench use the bail will raise the front of the instrument if de sired Refer to 2 2 for rack mounting instructions Figure 1 2 Front panel on the Capacitor Six 11 position switches with knobs and dials to set desired value of capacitance between HIGH and LOW terminals HIGH BNC connector 874 optional LOW BNC connector 874 optional Access holes for A trimmer Capacitors MC Cover Plates to pro tect setting of trim mer Capacitors Figure 1 3 Connection on the rear panel of the 1413 INTRODUCTION 1413 Series Section 2 Specifications Range 0 to 1 111 11 F controlled by six in line Mechanical Convertible bench rack
12. the cabi net thoroughly when installation is complete Replace the instrument in the cabinet as soon as possible after the work 1s completed To install the instrument in a rack a Loosen the four captive 10 32 screws in the rear of the cabinet until the chassis 1s free slide the chassis forward out of the cabinet b Match drill the cabinet for proper positioning of the rack mount adaptors c Remove the four feet and the bail from the cabi net if required for clearance d Attach one Rack Adaptor Assembly G to each side of the cabinet using the hardware supplied e Install the instrument in the cabinet and lock it in place with the four captive screws in the rear panel that were loosened in step a OPERATING PROCEDURE Rack Adaptor Assembly handle eges 4 Screws BH 10 32x 5 16 4 Screws BH 10 32x9 16 with nylon cup washers f Slidethe entire assembly into the relay rack and install it with the four 9 16 1inch screws with captive nylon cup washers E Use two screws on each side and tighten them by inserting a screwdriver through the holes in the handles To reconvert the instrument for bench use reverse the above procedure Seal the mounting holes if the working environment warrants such action 3 3 Connections CAUTION The voltage rating of the 1413 1s 500 V pk maximum up to 10 kHz varying approximately inversely with frequency above 10 kHz Do not exceed these val ues 3 3 1 Three Termin
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