FROM THE WORLDS FINEST RANGE OF DIGITAL MULTIMETERS

FROM THE WORLDS FINEST RANGE
OF DIGITAL MULTIMETERS
Datrons versat~leAUTOCAL rdnge o f
high qudl~typreclslon multlrnelers
lncludes Inslrumenls to satisfy the
Accuracy and Linearity
The 1081 s super high accwacy d r ~ d
stab~l~ty
specil~cationsare based on the
complete spectrum of medsurement
prlme element of the Internal reference
requlrerrrents from the general pclrpose
c~rcu~lry
Us~ng
computer S G ? / P C ~arid
B~
capab~l~ty
of the 1065 lo the Standards
certlf~edZener d~odeslrom an automated
Laboratory preclslon of the 1081 Each
system spec~allydeveloped by Datron
~nstrumentIn the AlJTOCAL range has
each reference clrcu~tincludes four
been destgned lo achleve opllmum
d~odesfor 'slatlstlcai enhancement'
performance In ~ t sclass and stand,~rd
g ~ v ~ rthe
i g 1081 a /'/z d1g11
short term
feat~lresInclude among others. I ]slant
stab~l~ly
perlorrrldn~e
of -to 25pprr1
b P t C read ocrt of I ~ n i ~ott suncertclrf~ty,
reddlng
spec~dllydeslgned li~cjhbrlghfness
The 1081 achieves the erceptional
dlsplays w~thiloatrng polnls lor easc ut
linear~lyot +O Sppm on a scale l ~ n g t h
readmy lull comput~nqfuncl~ons,h~nged
plug In PCBs and c o r n p l ~~t ~I ~ r l r o n ~ c 19.999.999 uslng an enhanced verslon ol
the Datron multi-slopeanalog to dlgltal
cdtlbrailon lrorn 11sown front panel
converter.
The 1081 IS thc uil~maicIn cIer,trrcal
mracurcmc?rtpcrlorni,~r>c
r Ilr:s~cjrrc!cllor
Slanclard Laboratorrcs ,rnd s~iccldl~sl
.~ppl~catiuns
the 7% dlgll 1081
~nstrclmcntIS a truly no compromise
deslgn
The I081 offers the most comprphpnslve measurement capabil~tyofany
DMM to rlate The irislrum~nlcdri l>f>
supplred l o meel the customer's ~rrtlt
-- -.
~ i d u arequ~rernenls
l
slmply as a baslc DC
~altmeteror, w ~ t h
any conblnatlon of the
Stability and Low Noise
lollu,v~nyopt~ons
The Input arnpilf~er
desrgn provldes
Trcrc RMS AC Voll,~ge
oulsl;~nd~nr~
short and o n q term Tero
~eslstdnce
performance enabl~ngreal~sl~c
medsureA- Comprehens~veRatio dnd Hear
men1 down lo IOnV resolut~onand, lor the
1 npul
f~rsttlme on any DMM.a guaranteed
IEEE 488 Dlgrtal Interface
nolse speclflcat~on
k Analog Oulput
The preamp stage takes advanlage of
PRTTemperature Frobe
the low input current and super low norse
With key features of hlgh preclslon
characierlstlcs of a matched FET Input pair
Thls, together w ~ t hl t ~ e
su~ondarystage, a
stabil~tyand excepiior~dlI ~ 1101s~
w
monol~thicchopper stab~l~sed
arnpl~f~er,
performance the AUTOCAL 108- fully
ach~evesunsurpassed uerlormance ot low
justll~es11spos~tlonas the 'best In t h ~
nolse, Input zero and temperature
AUTOCAL D M M range
-
-
+
+
+
+
coefficient.
Unequalied AC Performance
I N S T R U M E N T S
Far over a decade Dalrorl tlds led the
wurld In precision AC nleasurernent The
~~nsurpassed
accuracy and extended
bandw~dlhol the 1081 ensures Ihe conI~nruat~oti
nl t h ~ sposition of excellence
The rrl.le RMS converter, whtcb uscs
Dijtron's 'Log fccdbacl:' Ir:r;hn~cjric 15not
waveshape rlependcnl, accornmodales
hrgh crest factor signa!s and operales
over a dynarnlc Input 01 1(!'0 lo 200%
range. The all solid-slate converter uses
precision logarithmic ampi~f~crs
to
achieve this hlgh performance.
I1s ~ ~ f f enotic?
r s ol Ihe problems of ?low
speed, limited dynarn~crange and lo:^
freqbency restrictions associated wi!h its
thermal counterpart.
Improvements in stab~lltyand
accuracy in the 1081 have beer1 rr~ade
possible using Ihe latest prccislon b i ~ l k
metal f t l r i i resistors and glass dielectric
capacitors in all cr~ricalgain defln~ng
networks.These have also enabled a high
'llatness' factor over the main frequencies
of ~ntereslto be achievec. needlng only
tnree speciflcatlon bands ta cover the
range. with selection of the Spec' readocit
facility always displaying the coriect llmlts
of ur~certainty.
Datron engineers have concentrated
on substantial improvements to the low
frequency and DC perfoimance of the
AC converter. For example, a swrlchable
3 pole Bessel active l~lte;extends LF
capab~lityto 0 I Hz bringlng a new
capabil~lyto the Standads Laboratory.
This. togetherwith a i e w prc-amp design
inclurirng h g h perlormance low noise
DC coupled AC zlrrcuit~~
throughout
mskcs t h e 1081 unequalled r , AC
medsiirement
Resistance Plus
To corn3lete !he 10131's t i y t i
performance across all funclions 110
conprornrscs have been made
ihe
Resislancc rr,casurement f a c ty
.rrslon
6;jsed on a now floal~nqprk.
..
ci~rrenlsource dcsrgrl using a cornmulating relercnce supply for ~solatlon.
the basic circuit provices a range ot
swirchable preclslon currents to drive [he
res~sianceto be measured. The circu~t
conligurallnn permils a TRUE I v:lrc
sense measurement lo be made wlth
u p l o 100 ohm; in A N Y lead hav!rig no
effect.
Noise when measuring h i ~ h
resistances is a familiar problem. bdt oq
the 1081 the scaling of the current socrce
on Ihe rnegohn ranges has been opllmized lo reduce this effect.
In addition, a special high preclslori
I09 ohm range w ~ t ha imA soLrce is
provided for platinum resistance
thermometer measurements.
High R e s ~ l u t i o n
'HI-Res' extends the performance ol
lhe 1081 on ;il ~ c a s ~ ~ c n'unc!.ons
cnt
to
produce 7'L d ~ g ~on
t s UCV a n d
Res~stanceand 6'12 dtg~tson ACV
The lechniquc cmploycd ~nvolvei
switching ;tdd~t~onal
crrcu~tiyInto 11-le
analog to dig~lalconverter to produce a
finer deterrn~nat~on
of the nuli delectur
7em cross-over. thus producrng ~3
GENUINE Increase In resoiut~onas
opposed lo s~mpleaveraglng
However when an appllcatlon
requlres averaglng, selection of HI-Rcs'
and 'keyboard' programming makes two
averagrng modes ava~lableThe frrst IS
cont~nuouswhere all subsequent
readlnqs are taken Into account and :he
second IS 'block' where the u s ~can
r
select any number up to 19999 read~ngs
lo be averaged
ol e q u ~ p m ~rn~ts e dto calibrate the 1081
rnarntarnprl ,jl i;al~hr,rtlon Cenlcr5
around the world 1s shown In the 1081
specificat~on
In t h 1081.
~
AUTOChL has been
extended lo ~nciuciea new slandardlze
operation Th~s'STD enables the user.
wrlh one keystroke, l o simuitaneor~slyresianddrd~zeall ranges and lunctlons by
correctrng for dny Chdnge rn Ihe 1081
~ n t c r nrelerence
~l
circu~tryor the
Stdndards Laboralory prime reference
AUTOCAC 1s fast, s~mpleand com
plete The keysw~tchprotection ensures
no unautlrlorlrcd use and lor the 1081 no
other rncthod of calrbrallon w o i ~ l dbc
appropr~ate
guarded with prclvlsion for remote g~rard
connections to mlnlmlze errors back to
the signal source.
ACViDCV transfer performance is a
key fealure of the 1081 W ~ t hthe true RMS
AC Converter DC coupled, identical
circuitry throughout is used for both
inputs and. without limitations on input
dynamic range the 1081 AC/DC transfer
stablity of k30ppm for 24 hours offers
many advantages over allernallve
methods.
Furthermore, using the LF response of
the AC converter means that traceable
AC/DC transfers clown to 0.1 Hz are
achievable an area of Standarcis
Laboratorymeasurcmenls rrol pteviously
possible.
Autocal
Tern pera t u re
This hlgh coniidence cal~bralion
technique is vital lo achieving Ihe
outstand~ngaccuracy of the 1081
The abil~tyto fully calibrate lrom the
front panel with covers on, avolding the
need for additional stabilization time.
enables the potential of full AUTOCAL.
Using a Datron supplied Platinum
Resistance Thermometer Probe Ihe 1081
can be usefirily extended lo rnd kc
accurate temperature measurements
from -100 C l o f 2 0 0 C
In the Standards Laboratov] the
sla~nlesssteel probe IS part~cularlysu~ted
l o measuring oil bath tempcralurc whlch
w ~ t hthe5% d ~ gd~splay
~t
prov~desa
resolut~onof 1 rn C
Stable Transfers
Ral~omeasurement In the 1081 IS a
powerlul and versal~lefeature
Inputs up to 350volts pk are accepted
vla two isolated and floating channels to
prov~dercadlngs of SIG, REF. SIG-REF
difference, SIG/REF ratlo or percentage
a Datron ~nnovallon,to be reailred
dev~at~on
Coupled with 'Auto ranging
For uttlrnate preclslon, the numenc
high accuracy ratio measurements of
keyboard can be used to enable direcl
wrciely d ~ f l e r ~ nInputs
g
can b e made
cal~brat~on
to non cardlnal point sources
such as standard cells, lhus e l ~ r n ~ n a l ~ n g autornatrcally
Great cdre has been taken to closelv
the uncertarnties ol addrtronal transfer
match both slgnal channels v~rtually
equlpment F~rrtherrnorel o provrde the
cl~mrnat~ng
errors in the input switching
user w ~ t ha full understand~ngof the 1081
circullry Each channel IS lndependenlly
s~.~ectf~calrons,
the iraceabie uncertarnty
Internal Ilnear~zatroncorrect~onis
optlrnrzed by entering the actual traceable probe resrstance at 0 C and -!-I00 C
ilslng the numerlc 'keyboard3.andthe
AUTOCAL facll~lyThls conforms to
IPTS-68 standards usrng a 5th order
polynornral
Other P R'r probes can be used w ~ l h
lhe special 1 mA Res~stancerange
pruv~ded
Calibration Systems
With the IEEE-488 standard rnlerface.
Dalron's 108; Srrngs Standards Room
measurements under hus con!ro! for the
lirst lime. For a speciai~sl;tnd ::igli
performance ~nstriiment.
Ihe 1081 is
approprialcly lilteci with a n mprcsslve
range of bus facriiiies rnak~ng11 the deal
instrument tor calibration systems
Support
As a d ~ a g n o s l ~
self-check
c
a test
roullne can bc sclcclcd to sequcnt~ally
check all m a r lunctvn c i r c ~ ~ lrnclud~nij
rv
Ihe V I ~ J~~~ i l ~ t ) r rncrnnry
~ ~ i ~ o rkti any sTage
an error code ~dent~fies
falure to plug-~n
niodille level
The whole ~nstrumentIS deslgnec! to
rncct Ddlron 5 rigorous cjual~lystandarcls
Each u n ~ISl subjected to an extended
period of 'burn-~n'before shrpmerit
7 0 back our conf~dencern :he 1081 as
the best DMM rn the world each
inslrument carrlcs the now Idm~lidrDalror
comprehensibc fivc year warranty and free
annual calrbraton
For rnaxlrr-rlurn economy, the 1082 IS
also ava~lablewith Ihe full pcrformance of
the 1081 In a frxed conf~gurat~on
which
lncludes DCV true RMS ACV, Resistance.
& IEEE-488 rntcrface as standard with
one year warranty
Rear Signal & Reference Inputs.
\
on DCV. nand PRT.Average
o l lour measurements is
displayed.
Autoranging on all functions including
Ratio. Upat 200°/0 range, down at
18.8% range, with 'Downrange Skip'
for high speed.
/
keys allow 7 % digit keyboard input.
Temperature readnut using
I O O f l Platinum Resistance
Thermometers.
IOnV
0.1 p V
1
Tnie 4 Wire resistance
measurement tolerates up to
lOOR in any lead. Special
rangc for resistance readoul
using any PHT.
- 1,000 V OC
- 1,000 VTrue RFAS AC
- 20 MS2
I
True RMS ACVwith
5:1 Crest factor, lOOHz to
1MHz. DC coupled A C
facrlity and selectable LF
response to 10Hz 1Hz at 0.1 Hz
-- -
Analog Output for XY plotters and
chart recorders.
1
Alterna t ~ v eHear Signal or
ncfcrcnce inputs.
-
THE AUTOCAL 108112
79,999,999 floating point high
brrghltnessplasmad~splay,with full
lunctron annuncialion.
I
I
Self- test d!agriostrcs with
disp'ayed
D~splayof SrglRef Ratio, Sig- Ref Difference
or Percentage Deviation. With 'Autorange', wide
range of inpol ts accepted.
.
HI^ h resalui~oncxtcnds scale
,imi of
uncertainty laking account of function,
range, reading, full scale and
frequency. Perbod since calibralion set on
rear panel.
length to 7!/2 digits on DCV,
12 and to 6 ! / 2 dig1ts
on AGV. Continuous or Block
average inciuded.
I w s - F i J M E N 7 - S
ACCURACY A t MTWE TO CALIBRATTOM STANDARDS
2 (pwnreadlng + Qpm FS) 141
Specifications
STbRlClTW121
& (rrpm reading
RANGES
DC VOLTAGE
To provide the user with a lull understanding;the
main spec~ricationsof the 108 112 are shown
undcr the following kadings:
lU0 0000 10)mV
1 OO00flo O
l FV
10 00000 10iV
ioooooo IOYV
1000 000 101V
OVERRAN G L
Ranges
l rnln
100% an all
1 ODmV
1V
IOV
023+025pEF
02S-t135~tV
025+25ltV
OZ~+~IJIIV
g.25 at. 250pV
ranges cacepl
1000V.1e
i . g ~ g . g g ~ 1 9 )innv
1 OOOV
Full Scate
+ ppm FS) 141
24 Hours
2 f 1 5
15+025
15+025
Z+QZS
2 .1- 0.25
? T C 2 1'C
1
24 HOUFS
90 Days
f Year
3 +2
8 +2
2tl
5+f5
5+t
8tt.5
11+2
8-t15
R f l
t 1 + ~ 5
11+1$
1101
3+ 1
3+1
8+15
Stablily 1s the repeatabilityof a set output lor
c~actlythe same conditfons.
bc~uracyretalive to calibrationstandards
includes all the effectsof stablity, lernpcralure
caeff~c~ent,
mise and iinear~tyunder worsi case
AC VOlTnGC
If!OOoO
lnV
TrnHMSlfl
lins and load conditions
T.011000 101V
Calibration uncertaintyshows the traceability of
'Datron's calibratinn 01 Ihe 7 081/82. After
re-caliira%onthe Iraceabilly of the users
slandards should be subslduted.
t0 0000 101V
Absolute accuracy is expressedhy a
summation of 'accuracy relative la calibration
standards' plus 'calibration uncertainty'.
RESISTAUCE
1 OO%,onall
er~qescrct?pl
1000V.Q e.
199.999 19)
Full Scale
IOifr-2ktTI
IOPlnV
n ma,+ rio07a,
til- IOCV
~ ~ I ~ ~ + U Oo aO ~ S~ o~ . +~ o~o o s u ~
n
IkV
OR25%+0011W
003%+IIOOW
000?:,+DQi213
0.02% t O.O1%,
Ofld"~,+OOf1%
[Y.O6%fQ.O12!4
O(IfliL+QO12%
0.03%
0 C4% 3-f a t %
O061.;r+O012'Yn
DO2%+0012%
0.12% f 0.022%
0 07"kn-b 0 07'B
0.1ZQb+0 022%
0.1%
002'l,+00016b
+ 20
1QC5
60
10C2.5
70 2 5
5l+12
lOQmV
7Dklt1-TOOkHt TV-100V
fOt5
TO-C?S
70 30
fiO+?S
0 089i1+ O022'b
0.04% + 0.07%
Is1
20 -k 2.5
80
0.08%
1O
n
100n
IkO
05+5Qfl
25+25
IOkR
OS+6mfJ
05+wmn
t 500mn
5 f 552
2kHt-2CkHr
10UmV
1V-IOOV
loo 000 (0) Q
Is1
IlrV
1000 00 (0) V
10 00000 10)n
1001%onall
100 0000 10)R
ranges. 1 e
1 000000 10)kbl 1.999.999 (9)
10 ooooo(e~kn FUII Scale
iuanooo~o~~n
TO QOOOO{O]M61
20 + 2.5
toakn
1OOOkR
1OMR
I kV
+
05t60pR 1
05+ 60Dui-l
+
711+11
+
+ 25
2+05
2 +0.5
2+05
z.s+o.s
I
+ 0.5
6 t 0.5
n 0 2 5 m t f i o(~P%, 003% t 0 0 0 7 % ~
o~h+aan~a
4
1
O.PZ2I
+3
3St
3 t f
3+1
4+r
7t 1
10+ 1
+ 0 01%
+
16% + fl 02ZQb
0 16%
+ 0 07%
+ 0 022%
7 3
5C15
!t+ 15
5+15
6-c 1 5
15t15
12+3
10tt5
10 1.5
10+t5
30+15
50+15
+
1t+15
25+15
(
I
ACCURACY RELATIVE TO CALiBRATlON STANDARDS
i (gprn reading ppm FS) 141
+
COEFFICIENT
23 C + 5 C
24 Hours
90 Oays
CALIBRATION
UNCCR'IAINTY
l Year
P P ~ [ ~ I
+- ppm Output: C
13'C-$8 C
28 C - 3 3 C
15
10
10
15
SElTLINGTIME
To IOppm steps~ze
F~lteroul<50ms
F~lterln < 1s
To0 l0/o slep slzr
100Hz <500ms
lOHz < 2 5 s
1Hr <!5s
0.1 Hz <l5Os
COMMON MODE
REJECTION RATIO
(1 kR Source
Unbalance)
> 140dB at DC
+
>8PdB
normal
modeat
IHZ-~OHZ
INPUT
IMPEDANCE
OTHER SPECIFICATIONS
0 1 l0lOV
rmges (<20\n> 10,OOOMR.
lOOV& IOOOV
ranges:
lOM<l+O.l!'u
Type
multi-slope A-D converter
nel Stgnal accuracy net reference accuracy
Rat1oAccuracy[51
21s
Read Rate
Normal Mode Relect~on
66dBat 50160Hz 0 15%
frller out
fllter ~n
120d8al50Hz lncreaslng at l8dBIoctave
<50pAdrlltlng dl <I
pWC
lnpul Current
lnpul Prolect~on
w~thslands1OOOV RMSonany range
Zero Stablllty
f (0 2 d~gilsf 0 lpVj11nonthf t c
1M R
shunled
by lSOpF
Type
*
+
*
true RMS AC coupfed measures AC component wlthup ta 1OOOV OC b~asonany range
By presslog AC and DC keys, DC coupled true RMS AC 1s obta~ned,I e
k net s~gnalaccuracy nel retewnceaccuracy
Ral~oAccuracy 151
JAC'fDC3
+
Read Rate
21s
5 l at lull range
Cresl Factor
lnpul Prote~llon
w~thsldndsIOUOV HMS onany range
Add lorna~naccuracy spec flcatlon for DC s~qnals 0 0l'"u read~ngi0 001 59oFS It lOpV
as OC coupled* D 05% FS
L f 0 I Hz
1 Hz
as DC coupled* 0 OIUioFS
lOHr
r)snllfIrl speclf~callon
HF 100kHz- 1MHz
2"fureddlng lti/UFS(IV& 10Vrangel
*
Up lo 10kO range:
generally lhe same
as DCV but depends
on external
capacrtances
and guardinglsh~elding
techniques used.
NOTES
i ) - HI-Res se!ecled gives 7'12 d~gltson DCV 8 Res~slancek6'h dlg~lson ACV
11 1- S.gnals <2 x ill7
volt Hz > IL)0 FS, BC co~~pled
below lllOH7
121 - For sanecond~t~ofls
with HiRes selected bclwee~r18 C - 28 C.
131 - Datron Irstruments traceah~litylo National Standards
141- FS = ? x range.
151 A t samedmplt!ude. lrequency etc errors tend to zero
161-AodO l l u / t : per 100Vabove500V
171-At lull range f 2?:
lrue4 a ~ r w
e ~ t hacl1veguard(250~
mrnlmum) can be sw1lchedto2 wlreon lront panel
Type
*. net s~gnataccuracy & rrel referenceaccuracy
Ralio 4ccuracy 151
~ l l l l ~ l d l l d ~ 2 5HMS
0 V onany range
Input Prolect~o~~
Aead Rate
21s
< 20V all rallqes
Open Clrcu:! Voltage
Lead Res~stance
up to IOOR
Current through unknown t O I l tOmA
l 0 O n l 0 m A 1ImA -PRn
1OkR lODpA
1OOkR lOpA
IOOOhR 5pA
I k R ImA
IOMR SOOnA
GENERAL
6% dlg~ts
20 wattsapprox
0 Clo50 C
-40 C to+ 70 C
89mm 13 5") x455mm{17 9") x 420mrn (1 6 5 " )
'
WEIGHT
10kg (22lbs)
!
SAFETY
WARRANTY
De~lg"ed!oUL1244, IEC348& BS4743
5YEARS 1081 1 YEAR 1082
Transfer
AC VOLTAGE
TRANSFER
105- 127 v o l t s o r 2 0 5 - 2 5 5 v o l i s 50Hz,50Hz~r400Hz
POWER SUPPLY
POWER CONSUMPTION
OPERATING TEMP
STORAGE TEMP
DIMENSIONS (HxWxDI
ACCUHACY
(2% add to
I
SPECIF'CAT'oNS
--
-
ORDERING INFORMATlON
PRICES
TEMPERATURE (IPTS-68)
I
I
RANGE
1
ABSOLUTEACCURACY{+ "C)
(5% d~grts)
24 Hours
( 2 3 ' C k 1 C)
90 Oays
(23 C + 5 ' C I
1 Year
( 2 3 C t5 Ci
-100 ta -55
02
0 25
03
-55 l o 0
0 0.1
01
0 15
0 tc,S-100
0 02
006
01
200
0 04
01
0 15
At0 C & l O O C
0 01
O 05
0 03
'C 7splay
+I00 LO
T
fl D~sptay
161/~171:2d~pts)
1OQrl[ t n ~ A )
ACCLIRACY FlELATlVE TO CAL1BRATlONSTANDARDS
f (ppm read~ng ppm FS)
+
3t 3
10+35
15+4
1082: 6M/71/2 Digit AU TOCAL Multimeter with DCV, ACV,
Resistance, IEEE-488
Option 40: Comprehensive Ratio and Rear Input
Option 70: Analog Output
Option 90: Rack Mounting Kit
6995
595
150
50
Accessory
PRT 100:
485
Platinurn Resistance Thermometer Probe (100R)
1081: 6%/7YzDigitAUTOCAL Standards DC Digital Multirneter
Option 10: True RMS AC Converter
Option20: 4-Wire Resistance Converter
Option 40: Comprehensive Ratio and Rear lnput
Option 50: IEEE 488-1978 Standard Digital Interface
Option 52: Remote Trigger (included in Option 50)
Option 70: Analog Output
Option80: 1 15V 6OHz Line Operation
OptionBI: 1 15V50Hz Line Operation
Option 82: 1 15V 400Hz Line Operation
Option 90: Rack Mounting Kit
Accessories
PRT 100:
CSI:
HVP :
1501:
Platinum Resistance Thermometer Probe (1 00nl
Current Shunt Set
High Voltage Probe
Deluxe Lead Kit
5750
1545
875
595
595
150
150
nlc
nic
nl c
50
485
3 75
3 75
100