Series 1422-IEC, 1423-!E6 1424-IEC

- High Precision Resistance Dekade 1422-IEC, 1423-IEC, 1424-IEC - meets the specification of the "BundespostM-standard no. 104611 984 (EMI = electroma...

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High Precision Dekade Series 1422-IEC,1423-!E6 1424-IEC

01999 burster präzisionsmeßtechnik gmbh & CO kg All rights reserved lssue 6199

Certificate of manufacturer We herewith conform that the

- High Precision Resistance Dekade 1422-IEC, 1423-IEC, 1424-IEC meets the specification of the "BundespostM-standardno. 104611984 (EMI = electromagnetic interference). The "Deutsche Bundespost" was informed of the marketinglsale of the Decade and is authorized to check the manufacturer samples for their EMI-performance.

burster präzisionsmeßtechnik gmbh & CO kg

EG-Konformitätserklärung Cemfkate of Conformify

G e m ä ß ISOllEC Leitfaden 22 u n d EN 45014 erklärt According to ISO/IEC guidelines 22 und EN 45014 standard

burster präzisionsmeBtechnik gmbh & CO kg

Name des Herstellers: Manufacturer

Address of the manufachircr

Adresse des Herstellers:

Talstr. 1-7. 76593 Gernshach

daß das Produkt Produktname:

Hochpräzisions-Widerstands-Dekade

Declares that theproduct with name

Modellnurnmer(n) (Typ): Model / Type

Produktoptionen:

IEC RS232

Options

mit d e n folgenden Prodnktspezifikationen übereinstimmt is confonn with following specifications ofproduct

Sicherheit: Sofeq requirements

Isolationsstrecken: insulation against or from house

EMC: Elechoniagnetic compatibility

VDE 0100 Teil 410 Ahs. 4.1+A2 (IEC 64) IEC 1010-1 EN 61010-03194 VDE0411Teil 1 DIN EN 50081-2 VDE 0839 Teil 82-1 DIN EN 50082-2 VDE 0839 Teil 82-2 (VDE 843 Teil 2 bis Teil 5) IEC 801-1 ...... IEC 801-5 CISPR 11 DINEN 55011 1991 VDE 0875 Teil 11 07192 VDE 0875 Teil 211 06193

Schutzmaßnahmen; Schutz gegen gefährliche Körperströme Protection against electric shock

Sicherheitshestimmungen für elektrische MeB-, Steuer-, Regelund Lahorgeräte. Safety requirementsfor electrical equipmentfor measurement conhol and laborafory used

Elektromagnetische Verträglichkeit Fachgmndnorm Störaussendung Generic emission standardParr 2: Indushial environment Elektromagnetische Verträglichkeit Fachgrundnorm StörEestigkeit Generic immunity standord Parf 2: Industrial environnrenf

Grennverte und MeBveriahren für Funkstörungen von industriellen, wissenschaftlichen und medizinischen Hochfrequenzgeräten @SM-Geräten) Limits und methods of measurement of radio disfurbonce charactrnstics of industrial, scienhxc und medical (ISM) radio-/requenq equipment.

Ergänzende Informationen : Additional Information

Gernsbach den 11.08.1995

Unterschrift des Herstellers oder Euifuhrers

Place /Date

Signature of manujocfurer

i.V. [email protected]ßmann (Leitung Qualitätswesen) Qualify Manager

Operation I n s t r u c t i o n f o r Types 1422-IEC, 1423-IEC, 1424-IEC

Table o f contents

1. l n t r o d u c t i o n 2. 3. 4. 5. 6.

Address s e l e c t i o n Messages sent by t h e decades Messages accepted by t h e decades SR1 and PP1 f u n c t i o n s Programming exampl es

1. I n t r o d u c t i o n An IEEE-interface 488 has been f i t t e d i n t o o u r High P r e c i s i o n Resistance Deca des, s e r i e s 1420. T h i s enables

- the remote motor d r i v e n c o n t r o l o f your decade or t h e read o u t o f t h e s e t value.

F u n c t i o n a l i t y o f the IEEE-488 i n t e r f a c e : SH AH L T RL SR PP DC DT

1 1 4 6 1 1 1 1 1

Source Handshake Acceptor Handshake L i s t e n e r w i t h address MTA T a l k e r w i t h address MLA F u l l f u n c t i o n w i t h LWLS and RWLS S t a r t o f operation o r indication o f e r r o r S t a t e i n f o r m a t i o n - PPoll - E r r o r Device Clear as group o r as s i n g l e u n i t T r i g g e r f u n c t i o n as group o r as s i n g l e u n i t

2. Address s e l e c t i o n The s w i t c h f o r IEC-address s e l e c t i o n and f o r programming i s a v a i l a b l e a t t h e back p l a t e o f t h e instrument a f t e r opening t h e enclosure: Switch 1 - 5 = u n i t address ( b i n a r y valency Z O , 2" zY), Switch 6 - U = end characters (LF,CR,Eol)

za, z3,

on = 1 Switch towards f r o n t p l a t e , o f f = 0 Switch towards back p l a t e . The switches are c l e a r l y signed on t h e p r i n t e d board, t h i s enables easy Setting. The s w i t c h s e t t i n g s on d e l i v e r y are as l i s t e d below: u n i t address

= 9,

end characters = CR

+

LF.

A l l sequential combinations o f the end characters can be selected, f o r example CRtLFtEol

.

The instrument i s s e t t o a mains voltage o f 220 V . The corresponding mains fuse i s 1 A slow. The l i f e t i m e o f o u r h i g h performance switches can be extended by u s i n g o u r c o n t a c t p r o t e c t i o n grease, type 1300-002. 3. Messages sent by t h e decades Each decade o f t h e s e r i e s 14.. c o n s i s t s o f 6 i n d i v i d u a l decades, each o f them can be s e t from 0 t o 10.

I f t h e decade i s t o be c o n t r o l l e d from 0 t o 10, s t r i n g v a r i a b l e s have t o be used. The code o f p o s i t i o n 10 t h e r e f o r e i s the hexadecimal value A. The maximum p o s i t i o n i s AAAAAA.

Otherwise numerical and i n t e g e r , v a l u e s can be used. The maximum p o s i t i o n then i s 999999. The decade i s sending always 6 characters w i t h l e a d i n g Zeros, f o r example 000000, 000001, 001298, OOAAAO. Note: T h e e c a d e i s sending no ohmic values because a l l decades are u s i n g t h e Same Software. You have t o s c a l e t h e values o f t h e decade as f o l l o w s : Type 1422 set:value = sent value /100, Type 1423 set:value = sent value / 10.

4. Messages accepted by t h e decades Numbers can be coded as - i n t e g e r s , e. g. 1234, - f l o a t i n q ~ o i n numbers t (FPN), e. q. 1.234E3, The s e t t i n g 10 10 10 10 10 10 can o n l y be sent as a s t r i n g A A A A A A Exampl es: Computer is sending: integer O integer 12 FPN 1.23 FPN 1.23E3 FPN 999E3 integer 999000 String 'AOOOOA~ String 'AAAAAA' ~ E O I>

The Decade i s s e t t o : 000000 000012 000001 001230

i s the end o f l i n e c h a r a c t e r .

5. SR1 and PP1 f u n c t i o n s No manual operation i s possible, i f the decade i s i n "remote" mode. Manual o p e r a t i o n i s o n l y p o s s i b l e i n " l o c a l " mode. I n "remote" mode t h e decade s e t s t h e decade s w i t c h t o t h e sent s e t p o i n t . If t h i s set p o i n t i s n o t achieved, the decade t r i e s a maximum number o f 10 o t h e r times, then i t stops.

SR- and PP-messages depend on t h e s t a t e o f t h e i n t e r f a c e , t h i s enables many p o s s i b l e r e a c t i o n s o f t h e c o n t r o l l i n g h o s t computer t o e r r o r messages (see t a b l e " e r r o r messages").

The zent s t a t u s b y t e a t SRQ i s as f o l l o w s : a) 64 = Manual operation o f t h e decade. b) 65 = The decade cannot read out the s e t value, t h e decade s w i t c h i s b e t ween two s e t t i n g s . C ) 66 = The decade cannot t u r n the switch, t h e s w i t c h i s f i x e d o r t h e power supply has f a i l e d (check the fuse). Table: SR and PP e r r o r messages o f the decade PPoll message

SR message

Decade s t a t u s

local (LOCS)

none ( f a l s e )

none ( f a l s e )

no change

l o c a l w i t h LLO (LWLS)

immediate ( t r u e )

immediate ( t r u e )

no change

remote (REMS)

immediate ( t r u e )

a f t e r 3 sec t r u e if preceeding status i s not possi b l e

f u r t h e r attempt o f motor c o n t r o l , change a f t e r 3 sec t o l'ocal (LOCS)

remote w i t h LLO (RWLS)

immediate ( t r u e )

immediate ( t r u e )

f u r t h e r attempts of motor c o n t r o l f o r 3 seconds, decade r e mains i n "remote"

PPoll and SR s t a t u s w i l l be deleted, i f one o f t h e c o n d i t i o n s a) - d ) i s t r u e : a) Serving t h e request w i t h SRQ, b) New s e t t i n g o f the decade by the host computer (new d a t a ) , C ) I n remote mode w i t h LLO (Rems) i f the decade can be s e t t o preceedinq status, d) SDC o r DCL-Command i s sent v i a IEC-bus.

IEC-bus message

Decade s t a t u s

GTL (go t o l o c a l )

Decade changes t o LOCS-status ( a t group o r s i n g l e t r i g g e r ) , LLO i s taken i n t o c o n s i d e r a t i o n and a f f e c t s t h i s message (no change).

REM (remote)

1

Pending PPoll o r SRQ requests a r e deleted.

DCL SDC

Decade changes t o "remote" mode (REMS)

I

Pending PPoll o r SRQ requests a r e d e l e t e d and the decade changes t o " l o c a l " mode.

DC (device c1ear)l Programmable i n group o r s i n g l e u n i t s .

I FC (interface clear)

The decade i n t e r f a c e i s r e c o n f i q.u r e d and pending, ~ ~ ~ - s e t t ai rne ~s esl e c t e d .

LLO (local lockout)

a t LOCS t o a t REMS t o The decade (see t a b l e

PP1 (parallel poll)

PPU, PPE, PPC, PPD programming i s p o s s i b l e , f u n k t i o n a l i t y : see t a b l e " e r r o r messages".

DT (device t r i g g e r )

S i n g l e t r i g g e r : Decade changes t o "remote" mode.

LWLS RWLS shows v a r i o u s r e a c t i o n s t o e r r o r s " e r r o r messages") .

Note: Ifst computers do n o t have t h e GTL command, t h i s command can be r e p l a c e d b y a s i n g l e L o u t p u t t o t h e decade, e. g. 145 P r i n t * 1, 'L ' CBM 3032

6. Programming examples

Before c o n t r o l l i n g t h e decade v i a IEC-bus i n t e r f a c e , u n i t addresses and end c h a r a c t e r s have t o be s e l e c t e d (ses Page 1).

COMMODORE CBM 3032 I f t h e decade i s c o n t r o l l e d b y Commodore, Type CBM 3032, t h e CBM 3032 i s cont r o l l e r , t h e decade i s l i s t e n e r . Eol i s recommended as end c h a r a c t e r .

CBM 3032

100 PRINT 'Your i n p u t p l e a s e ' 110 INPUT A$ 120 OPEN 1,9 REM 9 i s t h e u n i t address 140 CLOSE 1 150 GOTO 10

Note:

I f t h e hex-number A i s used i n t h e s t r i n g , t h i s has t o be entered without s h i f t .

Reading t h e c h a r a c t e r s t r i n g o f t h e decade b y CBM 3032: The CBM 3032 i s t h e c o n t r o l l e r , t h e decade i s t h e t a l k e r . CBM 3032

180 190 200 210 220 230 240

PRINT ' ~ e a d i n gdata, s t a r t ' INPUT S$ OPEN 2,9 INPUT* 2,B$ CLOSE 2 PRINT B$ GOTO 10

TEKTRONIX 4051

I f t h e decade i s c o n t r o l l e d by Tektronix 4051, t h e T e k t r o n i x i s t h e c o n t r o l l e r , the decade i s t h e l i s t e n e r . Eol i s the end c h a r a c t e r . 100 PR1 ' ~ o u ri n p u t please' 110 INP A$ 120 PRI6'9:A$ REM 9 i s the u n i t address Reading the character s t r i n g o f the decade by t h e 4051: The 4051 i s t h e cont r o l l e r , the decade i s t h e l i s t e n e r . 4051

140 INP69:B$ 150 PR1 B$ 160 GO T0 100

REM 9 i s the u n i t address

HEWLETT PACKARD HP 85 The u n i t address o f t h e decade i s 9, the end c h a r a c t e r i s CRtLF w i t h o u t Eol

I f t h e decade i s c o n t r o l l e d by Hewlett Packard HP 85, t h e HP 85 i s t h e cont ~ o l l e r ,the decade i s t h e l i s t e n e r . 130 140 160 170

'

PRINT Your i n p u t please INPUT B$ OUTPUT 7 0 9 ; ~ $ END

'

Reading the character s t r i n g o f the decade by t h e HP 85: The HP 85 i s t h e c o n t r o l l e r , t h e decade i s t h e t a l k e r . 500 510 520 530

DIM A$C63 ENTER 709;A$ DISP A$ END

REM reserve 6 memory l o c a t i o n s a t l e a s t

HEWLETT PACKARD HP9916 o r HP9920 Operation o f t h e decade as mentioned above, . i n a d d i t i o n t o i t r s v i n t e r r u p t , SRQ operation and p a r a l l e l p o l 1 S e t t i n g i s p o s s i b l e . For r e a c t i o n s o f t h e decade t o e r r o r s See t a b l e " e r r o r messages". The u n i t address o f t h e d e c a d e : i s 9, the end c h a r a c t e r i s 9, the end character i s ERtLF w i t h o u t Eol. The programming i s g i v e n i n t h e sample Programme a t t h e end o f t h i s paragraph.

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G

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fiiiSilf: I k j i t l 7 l i < > -" , 3 Gl?Ci,iE Wj,l:hc)t.~t:...:.lg

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D a t i - c i ~ ~ t . :! PRlNT TIN T iMELiÜT 7 ? GTICLIE: E r - r i r INF'ii'T " T h e c i e c a d e i s t s i e t t o "?-r'j?s.t:s-t:-irtg$ OUTPlfT @Hp-i b; T e s t s t r i.n 9 8 RETURN '

,

Da+:*-i n r ! PR I N-r ON TIMEOLIT 7 , ? GOSi.!R Ei.--rar ENTER @!-Ip-i b ; T e s i : s t r i n g i ~ - i $ PRINT " T h i d e r a d e i s s ~ t to " q T e s t s t r i n g i n 9 ~ RFT UR?? Errni-: ! PRINT " T h e IEC-BUS RETURN

d o e s n c t answer"

! S w i t c h t h e d e r a d e t n locai

Inter-rupti i S r r p o l i=SPDLL (@HP-i b ) ! S R - - - i n p u t h a s 8 - e q u e i t e d isi- a n i n t e r ? - i l PRINT CIiR:Ti10j oCHRS(lCii PRINT " S e r i a l P o l 1 h a s b e e n p e r f o r m e d . E r r o r - b y t e " , S e r p s l l I F S e r p o l l = 6 4 THEM PKINT " T h e d e c a d e c a n n o t t u r n t h e motor " END I F ! I F S e r p o l l = 6 ; THEN PRINT " T h e d e c a d e c a n n o t r e a d o u t t h e a c t u a l s w i t c h s e t t i n g " END I F t

I F 5 e r p o l l = 6 6 UR 6 7 THEN PKINT "Do n o t t o u c h t h e s w i t c h i n remote r n o d e , p e r f o r m GTL b e f o r e " END I F ENRHLE INTR 7; 2 RE'TUF3l.I Tl: !

,

Witihjpr.11: ! INPUT " E n t e r t h e a d d r e s s of t h e S t a t u s b i t s ((I) t o 7) " ? S t a t ~ i s b i t - a d r e s I F S t a t u s b i t g d r e s ? 7 THEN PKINT " A d r e s i of s t a t u s b i t e x c e e d a d r e s s r a n g e , o n l y 0 t o 7" GOTO W i t h ~ p G ~ l -- T .-

PPCi!.!-. !JNCCirjF IG!L!RE @tip-i b PRIST " P a r - a l l e 1 Pol: d i s a b l e d " RET!JRr.i

I or- ~ n ]y, cr-,ii 4ec--E

I

P p o l . ? -i n t ; ! P R I N ? C r i R ( I C i ) iCHII$(tr:~! P R I N T " T h e rwn!?Lit:ein. haz. p e r f o r m e d irin F'F'OLL" GOCCiE I n t e ! - - r u p f ! F i * ' e + o r n SR0 a n d i e 1 r a z . e t h , ~l i n e EI'4f:HI-E INTR 7 ;i F:ETLIRI\i Ppoll-es': ! Pgn:? -iiia'tus=PFOi-l- (7) F:T?ZNT " i:t PPc.11 r e q u e s t t h e s t a t ~ i - b ~ t was= r " ;P p - 1 1 - s t a t ! . ! ~ 3ETUF:bI ! 14ith-llo: ! i O C A L LOCKOUT 7 P R I N T " T h e I E C - R L ! ~ hns L L D -LOCCL LOCI.:EC!'T S k a t - s '' RETtJRN t

Withniit-1l.c: LOCAL 7 TC ?:-I $*IOTE 7

! !REN-line t n 1 ( s a l s r ) ! REN--1 i ne t o i:! ! I E C BUS h a s b e e n f - e l e a s e d t h e IEC-ELJC Fiac ! ? r e r i d e l e t e d "

P R I N T " LI-O s t a t i i ? ; of RETURN ! With-srq: ! ON I N T R 7 GOC\JH I n t e r - t - u p t ENAHLE I N T R 7;2 PRINT CHRS(10),CHHBi10) P R I N T " INTERRUPT i s e n a b l e d " RETURN ! Withocit-SV-q: ! ' DISABLE INTR 7 FRZNT " INTERRUPT i s d i s a b l e d " RETURN END

Zusatz zu Bedienungsanleitung Dekaden Typ l4xx-IEC Jede PC-IEC-BUS-Schnittstellenkarte hat systembedingt eine eigene LISTENER (Hörer) und TALKER (Sprecher) Adresse. HP-Computer Modell 9920, HP85 etc. benutzen beispielsweise die Adresse 21 als TALKER sowie die Adresse 20 als LISTENER. Diese vom PC genutzten Adressen sind für exteme Geräte nicht mehr nutzbar. Die Adresse 3 1 ist generell nicht nutzbar. Welche Adresse ihre PC IEC-BUS-Interfacekarte benutzt, lesen Sie bitte in der Bedienungsanleitung. Anmerkung: Lesen an IEC-BUS Adresse 21 geht nicht weil zwei TALKER-Geräteadressen, hier das Rechnerinterface und die IEC-BUS-Dekade, gleichzeitig antworten und sich somit gegenseitig stören. Schreiben auf zwei oder mehr IEC-BUS-LISTENER (Geräte-Adressen) geht jedoch grundsätzlich. Lösung: Benutze andere IEC-BUS-Adresse für die Dekade. (1-30)

PC I IEC-BUS-Interface

IEC-BUS-Dekade Typ 14xx

Addition for operating instructions decades model i4xx Every computer interface board has an own IEC-Bus-address LISTEh'ER and TALKER Address. HP computer model 9920, HP85 etc. use the address 21 as a (own) intemal IEC-Busaddress. The own Computer-IEC-Bus-card-address is not usable for external equipments. (Here Address 21). IEC-Bus-Address 3 1 is not usable. PIease, read in the operating instructions interface technician which IEC-Bus-address your computer uses. Annotation: It is not possible to read on IEC-address 21 because two equipment's answer as TALKER at the same time (computer-interface-board + external JEC-decade). However, it is possible to write on two or more IEC-Bus-addresses, LISTENER, here Address 21, simultaneously. Solution: Use other IEC-Bus-Address on decade (1-30)

Computer Controlied High Precision Resistance Decade

Code:

1422 E

Manufacturer: Delivery: Warranty:

burster ex stock 12 months 1.10.2001

Issue:

Models 1422 IEC, 1423 IEC, 1424 IEC, 1422 R5232,1423 RS232,1424 R5232

i i

Ranges from 10 X 0,01 C2 to 10 X 100 000 $L Error tolerance 0,01 %

m

Resistor material: ZERANINe

i

Temperature coefficient 5 2 ppmlK

I

Long-term stability < 0,01 % over years

Application

Description

A prime feature of the high-precision resistance decades is the design, fulfilling a host of functions. Meeting a whole range 01 requirements in practice they are used as

Highest precision, temperature and long-term consistency are characteristicfeaturesof thedescribed high-precisionresistance decade. Many years of experience, tried-and-testedtechnology and the useoffield-proven materials guarantee the high levelof precision. Thedecaderesistorsconsist of low-capacityand low-inductance wire wound of Zeranin. The low temperature coefficient of this material, the low error tolerance of the resistors and the longterm stability achieved through careful artificial ageing are the guaranteeforreliable conformity with the technical specifications for this decade resistor. A specially developed precision stepping switch with highquality contact materials and optimal brush construction guarantee very good reproducibility. The contacts are selfcleaning and virtually free of thermoelectric power. All 6 decade resistor Stages are contained in an atiractive 19" casing. The casing acts as screen against electrostatic interference. It is conductively connected to the earth socket on the front panel. Electrical connection of the decade resistor to the screen is possible with a connecting link. The two sub-decades R„ and R„are arranged so that they can be operated independently. An insulated plug-in link joins the two sub-decades together to form a six decade resistor. This makes the decade resistors suitable for universal applications. Very low zero-sequence resistance has been achieved by circuit optimization. This very low zero-sequence resistance is divided again if only one decade section is being used.

6-stage high-precision resistance decade 2 X 3-stage high-precision resistance decade 2 variable normal resistors Scalers with random-setting divider ratio

Computer Control Each of the 3 versions - model 1422, 1423 or 1424 - is also available with computercontrol. IEEE488 and RS232 interfaces are available. The RS232 version is easily extended to RS485 or RS422. The stepping motors used do notalterthe known high long-term stability and reproducibility 01 the decades with comwter control either.

Technical Data

IEC-Bus Version

TheIEC-B~sisconnectedby24-poieplug-inconnectormeetingIEEE488 Zero Resistance Box: Complete Resistance Box < 11 m ~ ( 9 i 2 m n ) Standards. The codina of the device address and various ciearina < 5 m62 (4 t 1 m62) Partial Box R„ Panial Box R„ 5 6 m61 (5 1 mS2) factory. Error tolerante: 0.01 % i n the main steps. see also tabie below The IEC-Bus-controiled decade resistors can also be operated in the Calibration: in Ohm absolute at 23 "C "PPl" (paraliel poli) mode. Resistance material: Zeranin"

*

Temperature coefficient of the individual resistances: 5 2 ppm/K Winding structure: subdivided coiis due to Chaperon < 0.01 % over years

Long-term stability: Power dissipation:

0.4 W (5 500 V)/individual iesistance = 4 Wleach decade rnax. 500 V (5 0.4 W) 2 kV„,/50 HZ

Operating voitage: Test voltage:

Design and construction: according to DiN 43783, part 1 and VDE 087118 Switching arrangement: short circuiting between two neignbouring contacts in the switching process Switching positions: gradation =12, limited to 11 steps Contact materiai: Ag piated on ECU, slider pack: of soiid Ag Operating moment: approx. 0.1 Nm TB", 2 HE Housing:

-

~

~

RS2321485-Version The RS232 is connected bv a 25-oole Mini-D socket. The baud rate can be switched from 9600 to4800. ANSI X 3.28 is used as transmission protocol. Data formal 8 data bit 1 stop bit are non-changeable. The parity blt can be selected from "no. even. odd. RS485 and RS422 transmission can

Auxiliary power: Power consumption:

220 V t 10 %, 50160 Hz passive approx. 18 VA, active approx. 132 VA

-

Dimensions (lenyth by height by depth): 445 X 90 X ?85[mml Weight: approx. 3,2 ky; ca. 12 kg iEC-Bus-version or RS232

Toierances, Charges Vaiue 10 X 0.01 62

Resistance toierance % i2

Rated current rnA 2000

10 X

0.1

C1

i 0.5

10

X

1

L2

+ 0.05

600

10

X

10

C2

'001

200

10x100

C1

+001

60

k6l

+001

20

10x 10x 10

X

1 10

kLl

t0.01

100

klt

i 0.07

2000

6 2

Controlled via Interface The mentioned excellent technicai specifications for the high-precision resistance decade boxes are not affected by the IEC-Bus/RS232control. The decade resistor operates as talker and listener, making it also possible for the Computer to read a manually set resistance value. The resistance decade always sends 6 characters (ASCil-code0 A) forthis purpose, whereby all non-required conducting positions are filled with Zeros. if a comDuter set value is chanaed . bv. hand in remote-control o~eration, slo,co ,lPo !I 18 !,'L !-C r -. i i i.icLua i i , ci>i,ecicci I?, 18 i.o a .:'J<; E..; C i..,I, :ii SHO-c.i s nans .C r i L :U , .:Cr 5 ooes ,131 'iinc place within 3s for any reason whatsoever. If manual adjustment is required. a locai comrnand (GTL) from the Computer is necessary at first. The resistance decade aiways seeks the optimal path for adjustment whiist avoiding the decade Position "000000 (short-circuit).

-

DKD Calibration Certificate burster präzisionsmeßtechnik maintains a calibration station which is affiliated to the Deutsche Kalibrierdienst (DKD). Supeivised by the Physikalisch-Technische Bundesanstalt (PTB) of Braunschweig, the caiibration station at burster's is authorized to issue Caiibration Certiiicates. TheCalibration Certificateshowsaltoyether60valuesforthe resistance in 10 switch positions of each decade and the inherent relative uncertainty. As experience has shown, the relative uncertainty in the upper decades amounts to only 113 to 1/20 of the respective error tolerance. More precise knowiedge of resistance vaiues thus means a veritabie increase in vaiue of the instrument.

Proprietary Calibration Certificate Please refer to DKD Caiibration, but the accuracy is reduced.

lssue 1.10.2001 1422 E - 3

h-precision resistance decade with 6 stages 1422 + 10 + I00 + 1000) n (001 +O,I + 1 +10k) n 1423 +too + t k +I +IO X (O,I +IOO + l k + 1 0 k + ~ o o ~ ) R 1424 X (I +IO recision divider with adjustable ratios X

Connector pins 2 - 5 complete decade with R„+ R„ Connector pins 2 - l ( 4 ) 5 divider R„ R , Earthing link (on demand) from 2 to 3 Housing

wo variable resistance standards 0 , O l n - l 1 , i Q and 10 n - 1 1 , l kR 0,1 n - i l l n and l o o n $11 W> I n - i f i o n a n d l k n iiiom wo separate high precision decades

Connector pins 1 - 2: decade 1 with R„ Connector pins 4 - 5: decade 2 with R, Earthing link (on demand) from 2 to 3

Order Information Model 142

C]1 - 1

I

I

Resistance range 10

X

0 0 1 C2

...

10 X 1000 C>

2

10

X

0.1 R

.

10

X

10kO

3

10

X

I

n .

10

X

iookn

4

aecaae IEC-Bus version

- IEC

aecade RS232 RS485 - version

- RS232

Proprietary Calibration Certificate

DKD Calibration Certificate Order Code i.e.

Order Code

14DKD - Order Code decade 14DKD

-

1.e.

1422-RS232

Accessories lncluded in delivery areaconnecting link10 bridge thedecadeinput with the housing andan insulatedplug - in linkforconnectingdecade R„ with , (1 - 4). decade R 1 pair of mounting angles for installation in a 1 9 - rack.

Model 1492-V001

14WKS - Order Code decade I4WKS - 1423 IEC

1422 1423 1424

Application Example Computer-Controlled Testing of a Pt 100 amplifier e

e e e

The program queries the Scanner to be sirnulated (i. e. Pt 100. Pt 500 etc.). Input of temperature values in "C. The program calculates the corresponding resistance value and Sets decade. The output of the test object is measured. Evaluation by the Computer (i. e. documentation).

Further Applications for 1422-IEC and 1422-RS232 Decades

e

e

Controllable load resistance ior automatic bridge compensation Controllable voltage divider for precision voltage Settings etc. Automatie testing of Ohmmeters Automatie testing of i.e. Pt 100 therrnometers (temperature simulation)

Technicai changec reserved