YOKOGAWA 2553A User manual

User’s
Manual
IM 2553A-71EN 1/8
2nd Edition
2nd Edition : October 2017 (YMI)
All Rights Reserved, Copyright © 2014, Yokogawa Test & Measurement Corporation
Printed in Japan
Model 2553A
Precision DC Calibrator
Simple Adjustment Procedure
Have a qualified engineer perform simple adjustment of the 2553A at a specialized facility with sufficient
precision. The simple adjustment values are retained even when the settings are initialized.
If you need to adjust the 2553A more accurately than that is possible with the simple adjustment feature or if you
want calibration and adjustment to be performed at a YOKOGAWA factory, contact your nearest YOKOGAWA
dealer. If calibration and adjustment are performed at a YOKOGAWA factory, all settings including the simple
adjustment values will be initialized to their factory default values.
WARNING
• Groundtheinstrumentbeforeconnectingtheinstrumenttothetargetdevice.Thepowercord
that comes with the instrument is a three-prong type power cord. Insert the power cord into a
grounded three-prong outlet.
• Besuretoturnofftheoutputbeforeconnectingordisconnectingthetargetdevice.
French
AVERTISSEMENT
• Relierl’instrumentàlaterreavantdelebranchersurl’appareilcible.Lecordond’alimentation
livréavecl’instrumentestdotédetroisbroches.Brancherlecordond’alimentationsurune
prisedecourantàtroisplotsmiseàlaterre.
• Toujoursmettrehorstensionavantdebrancheroudedébrancherl’appareilcible.
In addition to the above items, be sure to observe the warnings and precautions provided in
the“WiringPrecautions”and“ConnectingWires”sectionsinthe2553AUser’sManual,IM
2553A-01EN.
Required Equipment and Components
• Digitalmultimeter(DMM) KeysightTechnologies3458Aorequivalent
• Standard10Ωresistor YokogawaTest&MeasurementCorporation2792A05orequivalent
• Standardtemperaturedevice CoperElectronicsZC-114Aorequivalent
• ThermocoupletypeK IEC60584-1Ed3.0orJISC1602:1995compliant
Each piece of equipment and component must be calibrated and with sufficient precision.
Adjustment Conditions
• Ambienttemperature:23°C±2°C,humidity:20%RHto60%RH(nocondensation),warm-uptime:atleast60
minutes
• Permittedsupplyvoltagerange:90VACto132VACand180VACto264VAC,permittedsupplyfrequency
range:48Hzto63Hz
• For10mV,100mV,andthermocoupleadjustmentrangesofthe2553A,performadjustmentwiththe2553A
outputterminaltemperaturebalancedandstable.Duringadjustment,becarefulinkeepingtheoutput
terminal temperature from changing.
• SettheDMM’sintegrationtime(NPLC)sothatsufficientlystablemeasurementscanbeobtained(e.g.,
20PLCorlonger).
* NPLC:AnacronymforNumberofPowerLineCycles.Itisawayofexpressingtheintegrationtime.
Wiring
The 2553A and equipment are wired according to each function, namely voltage, current, thermocouple,
resistance,andinternalRJC.
Forthewiringdiagrams,seethewiringexamplesinthelater“Explanation”section.
Afterwiring,operatethe2553Aaccordingtotheprocedureonthenextpage.

2/8 IM 2553A-71EN
Procedure
Initializing the 2553A
Initialize the 2553A settings.
Initializethe2553Aaccordingtotheprocedurein“InitializingtheSettings”inthe2553AUser’sManual,
IM 2553A-01EN.
Switching to Simple Adjustment Mode
1.
Turn the RANGEdialtoselectSETUP.
TheSETUPmenuappears.
RANGE dial
1. Select SETUP.
The SETUP indicator turns on.
2.
Turn an output settingdialtoselectCAL.
3.
FlipthePOLARITY switch down.
“0” appears.
Output setting dials (use any)
POLARITY switch
3. Display “0.”
2. Select CAL.
4.
Turn the three output setting dials on the right to set the password “111”.
5.
FlipthePOLARITY switch down.
Three output setting dials on the right
POLARITY switch
5. When authentication is successful, the
2553A switches to simple adjustment mode. 4. Set the password “111”.

3/8IM 2553A-71EN
 Whenauthenticationissuccessful,the2553Aswitchestosimpleadjustmentmode.The30Vindicatorof
theRANGEdialilluminates,andthesimpleadjustmentvalueforadjustmentpoint+Fappears.
Simple adjustment value
Adjustment point
The factory default simple
adjustment value is zero.
Selecting the Adjustment Range and Adjustment Point and Setting the Simple Adjustment
Value
6.
Turn the RANGE dial to select the adjustment range.
7.
Turn the right-most output setting dial to select an adjustment point.
Adjustmentpointsfortheadjustmentrangearedisplayed.Selectfromthese.
Adjustment Range RANGE Dial Position Adjustment Points
10mV,100mV,1V,10V,30V Voltageranges +F,
- F,±0
1 mA, 10 mA, 30 mA, 100 mA Current ranges +F,
- F,±0
Thermocouple TEMP +F,±0
Resistance 400Ω +F
InternalRJC SETUP ±0
8.
FliptheOUTPUT switch up. The 2553Aoutput turns on. The output value that corresponds to the
adjustment range and adjustment point is transmitted from the 2553A output terminals to the measuring
instrument(DMM).
9.
While viewing the measured value, turn the three output setting dials on the left to adjust the 2553A
output value.
Fordetailsontheadjustablerangeofeachadjustmentrange,seethelaterexplanation.
Three output setting dials on the left Right-most output setting dial
7. Set the adjustment point.
9. Adjust the output value.
Adjustment point
10.
To set the simple adjustment values of other adjustment points in the same adjustment range, repeat
steps8and9.
11.
Turn the right-most output settingdialtoselectWRITE.The2553Aoutputturnsoff.
Right-most output setting dial
11. Select WRITE.
12.
FlipthePOLARITY switch down. The simple adjustment values that you have set are written to the
2553A internal memory.
IfyouchangetheadjustmentrangeorflipthePOLARITYswitchupbeforewritingthevaluestotheinternalmemory,
the values are discarded, and the contents in the internal memory are not updated.
13.
Tosetsimpleadjustmentvaluesofotheradjustmentranges,repeatsteps6to12.

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Exiting Simple Adjustment Mode
14.
FlipthePOLARITYswitchuptwicetoexitsimpleadjustmentmodeandreturntotheSETUPmenu
display.
YoucanalsoexitsimpleadjustmentmodebyflippingthePOLARITYswitchuponcetotransitiontothestateinstep4,
set“0,”andthenflipthePOLARITYswitchdown.
Explanation
Voltage
Wiring Example
FUNCTION: DCV
DMM
2553A HI
LO
HI
LO
Adjustment
2553A DMM
Adjustment Range Output at Each Adjustment Point Adjustable Range Range
+F
- F ±0
10mV +10mV
- 10mV 0mV ±1000ppmoftheadjustmentrange
(equivalentto±0.01mV) 100mV
100mV +100mV
- 100mV 0mV ±1000ppmoftheadjustmentrange
(equivalentto±0.1mV) 100mV
1V +1V
- 1V 0V ±1000ppmoftheadjustmentrange
(equivalentto±0.001V) 1V
10V +10V
- 10V 0V ±1000ppmoftheadjustmentrange
(equivalentto±0.01V) 10V
30V +30V
- 30V 0V ±1000ppmoftheadjustmentrange
(equivalentto±0.03V) 100V
Current (1 mA range, 10 mA range)
Wiring Example
FUNCTION: DCI
DMM
2553A HI
LO
I
LO
Adjustment
2553A DMM
Adjustment Range Output at Each Adjustment Point Adjustable Range Range
+F
- F ±0
1 mA +1mA
- 1 mA 0 mA ±1000ppmoftheadjustmentrange
(equivalentto±0.001mA) 1 mA
10 mA +10mA
- 10 mA 0 mA ±1000ppmoftheadjustmentrange
(equivalentto±0.01mA) 10 mA
 DependingontheDMMcurrentrange,youmaynotbeabletoattainsufficientaccuracy.Ifnecessary,usea
standardresistorandadjustbyusingaDMMvoltagerange,asshowninthenextsection.Useeithermethod
dependingontheaccuraciesoftheavailablerangesontheDMM.

5/8IM 2553A-71EN
Current (30 mA range, 100 mA range)
Wiring Example
2553A
HI
LO
2792A05
(10Ω)
FUNCTION: DCV
RANGE: 1 V
DMM
HI
LO
Adjustment
2553A DMM
Adjustment Range Output at Each Adjustment Point Adjustable Range Range
+F
- F ±0
30 mA +30mA
- 30 mA 0 mA ±1000ppmoftheadjustmentrange
(equivalentto±0.03mA:(DMMmeasurement/R0)) 1V
100 mA +100mA
- 100 mA 0 mA ±1000ppmoftheadjustmentrange
(equivalentto±0.1mA:(DMMmeasurement/R0)) 1V
R0:2792A05resistance(calibrationvalue)
Thermocouple
Wiring Example
FUNCTION: DCV
DMM
2553A HI
LO
HI
LO
Adjustment
2553A DMM
Adjustment Range Thermoelectromotive Force at
Each Adjustment Point Adjustable Range Range
+F ±0
Thermocouple(TEMP) 50mV 0mV ±99.9(equivalentto±99.9µV) 100mV

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Resistance
Wiring Example
HI
LO
FUNCTION: OHMF (4wire)
RANGE: 1kΩ
HI
HS
LO
LS
2553A DMM
Adjustment
2553A DMM
Adjustment Range Output at Each Adjustment Point
+F Adjustable Range Range
Resistance(400Ω) 100Ω ±1000(equivalentto±0.34Ω) 1kΩ,1mAexcitation
current
Internal RJC
Wiring Example
Copper wire
Standard temperature device ZC-114A
FUNCTION: DCV
RANGE: 100 mV
DMM
2553A LO
HI
LO
HI
Adjust to 0°C equivalent.
Thermocouple
Type K
Adjustment
• TheinternalRJCisaffectedbytheadjustmentresultsofthethermocoupleadjustmentrange,mentioned
earlier.AdjusttheinternalRJCafteryouhaveadjustedthethermocoupleadjustmentrange.
• Adjusttoavalueequivalentto0°Cbytakingintoaccounttheerrorinthethermocouplethatyouwillbeusing.
• The2553Aoutputdisplayisinunitof°C,buttheoutputterminalsproducethethermoelectromotiveforce
corresponding to the specified temperature.
• Fordetailsonhandlingthestandardtemperaturedevice,followtheinstructionmanualofthedevice.
2553A DMM
Adjustment Range Output at Each Adjustment Point
0Adjustable Range Range
InternalRJC(SETUP) 0°C ±2.00°C 100mV

7/8IM 2553A-71EN
Communication Commands
CALibrate Group
:CALibrate:ADJust:POINt
Function Setsorqueriestheadjustmentpoint.
Syntax :CALibrate:ADJust:POINt {PFULL|
MFULL|ZERO|OFF}
:CALibrate:ADJust:POINt?
 PFULL:Positiveadjustmentpoint
 MFULL:Negativeadjustmentpoint
 ZERO:Zero
 OFF:OFF
Example :CALIBRATE:ADJUST:POINT PFULL
:CALIBRATE:ADJUST:POINT? -> PFULL
DescriptionTheselectableparametersvarydependingon
thefunctionsetwiththe:CALibrate:FUNCtion
command as follows.
 VOLTage:{PFULL|MFULL|ZERO|OFF}
 CURRent:{PFULL|MFULL|ZERO|OFF}
 TCouple:{PFULL|ZERO|OFF}
 RESistance:{PFULL|OFF}
 RJC:{ZERO|OFF}
 IfsettoOFF,theoutputsettingdisplayshows
WRITE,andtheoutputisturnedoff.Ifaqueryis
made when the output setting display is showing
WRITE,OFFisreturned.
:CALibrate:ADJust:VALue
Function Setsorqueriesthesimpleadjustmentvaluefor
the selected adjustment point.
Syntax :CALibrate:ADJust:VALue <NRf>
:CALibrate:ADJust:VALue?
 • Whenthe:CALibrate:FUNCtioncommandis
setto<Voltage>or<Current>
  <NRf> = - 1000ppm to 1000ppm
(resolution:1ppm)
 • Whenthe:CALibrate:FUNCtioncommandis
setto<Resistance>
  <NRf> = - 1000 to 1000
(resolution:1)
 • Whenthe:CALibrate:FUNCtioncommandis
setto<Thermocouple>
  <NRf> = - 99.9µVto99.9µV
(resolution:0.1µV)
 • Whenthe:CALibrate:FUNCtioncommandis
setto<InternalRJC>
  <NRf> = - 2.00°Cto2.00°C
(resolution:0.01°C)
Example :CALIBRATE:ADJUST:VALUE 1000
:CALIBRATE:ADJUST:VALUE? -> 1000
ExplanationTheadjustablerangeandresolutionvary
dependingonthe:CALibrate:FUNCtioncommand
setting. If a value outside the adjustable range
isspecified,a“222:Dataoutofrange”errorwill
occur.
:CALibrate:FUNCtion
Function Setsorqueriesthefunction(voltage,current,
resistance,thermocouple,internalRJC)to
perform simple adjustment on.
Syntax :CALibrate:FUNCtion {VOLTage|
CURRent|TCouple|RESistance|RJC}
:CALibrate:FUNCtion?
 VOLTage:Voltage
 CURRent:Current
 TCouple:Thermocouple
 RESistance:Resistance
 RJC:InternalRJC
Example :CALIBRATE:FUNCTION VOLTAGE
:CALIBRATE:FUNCTION? -> VOLTAGE
ExplanationIfyouchangethefunctionbeforeexecuting
the:CALibrate:WRITecommand,thesimple
adjustment values that you have set will return to
theiroriginalvalues.Besuretowritethesimple
adjustmentvaluesusingthe:CALibrate:WRITe
command before changing the function.
:CALibrate:INITialize
Function Initializesthe2553Asimpleadjustmentvalues.
Syntax :CALibrate:INITialize
Example :CALIBRATE:INITIALIZE
ExplanationExecutingthiscommandwillresetallsimple
adjustment values to zero.
:CALibrate:PASSword
Function Entersthepasswordforswitchingtosimple
adjustment mode.
Syntax :CALibrate:PASSword <String>
 <String>:Password
Example :CALIBRATE:PASSWORD "111"
ExplanationYoumustenterapasswordtousethecommands
intheCALibrategroup.Useacharacterstring
tosetthepassword.Toexitsimpleadjustment
mode,enteranemptystring(twoconsecutive
doublequotationmarks).
:CALibrate:RANGe
Function Setsorqueriestheadjustmentrange.
Syntax :CALibrate:RANGe {<Voltage>|<Current>|
<Resistance>}
:CALibrate:RANGe?
 <Voltage>=10mV,100mV,1V,10V,30V
 <Current> = 1mA, 10mA, 30mA, 100mA
 <Resistance>=400OHM
Example :CALIBRATE:RANGE 1V
:CALIBRATE:RANGE?
-> :CALIBRATE:RANGE 1.0E+00
Explanation• Beforesetting<Voltage>,usethe
:CALibrate:FUNCtioncommandtosetthe
functiontoVOLTage.
Beforesetting<Current>,usethe
:CALibrate:FUNCtioncommandtosetthe
functiontoCURRent.
  Beforesetting<Resistance>,usethe
:CALibrate:FUNCtioncommandtosetthe
functiontoRESistance.
  Ifyousetrangeofadifferentfunction,a“131:
Invalidsuffix”errorwilloccur.

8/8 IM 2553A-71EN
 • IfthefunctionisTCoupleorRJCandyouset
therange,a“221:Settingconflict”errorwill
occur. 9.91E+37isreturnedasaresponsetoa
query.
 • Ifyouchangetheadjustmentrangebefore
executingthe:CALibrate:WRITecommand,
the simple adjustment values that you have set
will return to their original values. Besureto
write the simple adjustment values using the
:CALibrate:WRITecommandbeforechanging
the adjustment range.
:CALibrate:STATe
Function Setsorqueriestheoutputon/offstateforsimple
adjustment.
Syntax :CALibrate:STATe <Boolean>
:CALibrate:STATe?
 ON|1:Enabled
 OFF|0:Disabled
Example :CALIBRATE:STATE ON
:CALIBRATE:STATE?
-> :CALIBRATE:STATE 1
ExplanationIfthe:CALibrate:ADJust:POINtcommandisset
toOFF,thiscommand(:CALibrate:STATe)cannot
be set to ON.
:CALibrate:WRITe
Function Writesthesimpleadjustmentvaluestothe2553A
internal memory.
Syntax :CALibrate:WRITe
Example :CALIBRATE:WRITE