NATIONAL INSTRUMENTS SCXI-1121 Kev Kho Mob Module

Cov ntaub ntawv khoom

• Specifications
  • Khoom qauv: TSI-1121
  • Chaw tsim tshuaj paus: National Instruments
  • Muaj nuj nqi: Teeb liab Conditioning Module

Cov lus qhia siv khoom

• Calibration txheej txheem
  • Txhawm rau kom ntseeg tau tias qhov ntsuas tau raug, nws yog ib qho tseem ceeb uas yuav tsum tau ntsuas lub teeb liab SCXI-1121 raws li cov txheej txheem hauv qab no:
• Kev teeb tsa thawj zaug
  • Configure Half-Bridge tiav Jumpers.
  • Configure Gain Jumpers.
  • Configure Filter Jumpers.
  • Configure Excitation Jumpers.
• Cov txheej txheem pov thawj
  • Txheeb xyuas Analog Input Offsets.
  • Xyuas Voltage Excitation Limits.
  • Txheeb xyuas cov kev txwv tam sim no.
• Cov txheej txheem hloov kho
  • Kho Analog Input Offsets yog tias tsim nyog.
  • Kho Voltage Excitation yog xav tau.
  • Kho Tam Sim No Excitation yog xav tau.
• Txheeb xyuas cov txiaj ntsig kho
  • Tom qab kev hloov kho, txheeb xyuas qhov tseem ceeb kom paub meej tias kev ntsuas tau raug.
• Xeem txwv
  • Xa mus rau cov ntaub ntawv uas tau muab rau cov kev txwv kev xeem kom tau txais kev ntsuas ntsuas.

FAQs

• Q: Kuv yuav tsum ntsuas qhov SCXI-1121 ntau npaum li cas?
  • A: NI xav kom ua tiav qhov ntsuas ntsuas tsawg kawg ib zaug hauv ib xyoos. Txawm li cas los xij, kho lub sijhawm no raws li koj daim ntawv thov qhov raug.
• Q: Kuv puas xav tau software tshwj xeeb rau calibration?
  • A: Tsis yog, koj tsis tas yuav muaj software tshwj xeeb. Cov ntaub ntawv calibration muab muaj tag nrho cov ntaub ntawv tsim nyog los ua kom tiav cov txheej txheem calibration.

Taw qhia

• Calibration yog dab tsi?
  • Calibration muaj kev txheeb xyuas qhov ntsuas qhov tseeb ntawm ib lub cuab yeej thiab kho rau txhua qhov kev ntsuas qhov yuam kev. Kev pov thawj yog ntsuas qhov ua tau zoo ntawm cov cuab yeej thiab muab cov kev ntsuas no sib piv rau lub Hoobkas specifications. Thaum lub sij hawm calibration, koj muab thiab nyeem voltage theem siv cov qauv sab nraud, tom qab ntawd koj kho cov cuab yeej calibration tas li. Kev ntsuas ntsuas hluav taws xob them nyiaj rau qhov tsis raug hauv lub cuab yeej thiab xa rov qab qhov tseeb ntawm lub cuab yeej mus rau lub Hoobkas specifications.
• Vim li cas Koj Yuav Tsum Calibrate?
  • Qhov tseeb ntawm cov khoom siv hluav taws xob drifts nrog lub sijhawm thiab kub, uas tuaj yeem cuam tshuam qhov ntsuas qhov tseeb. Calibration rov kho cov khoom no rau lawv qhov tseeb thiab xyuas kom meej tias cov cuab yeej tseem ua tau raws li NI cov qauv.
• Koj Yuav Tsum Ua Li Cas Calibrate?
  • Calibrate SCXI-1121 ntawm ib ntus raws li tau hais los ntawm kev ntsuas qhov tseeb ntawm koj daim ntawv thov. NI xav kom koj ua tiav qhov ntsuas ntsuas tsawg kawg ib xyoos ib zaug. Koj tuaj yeem txo lub sijhawm no raws li qhov tseeb ntawm koj daim ntawv thov.
• Software thiab Ntaub Ntawv
  • Koj tsis tas yuav muaj software tshwj xeeb lossis cov ntaub ntawv los ntsuas SCXI-1121. Cov ntaub ntawv calibration no muaj tag nrho cov ntaub ntawv koj xav tau los ua kom tiav cov txheej txheem calibration. Xa mus rau SCXI-1121 Cov Neeg Siv Phau Ntawv Qhia kom paub ntau ntxiv txog SCXI-1121.

Cov khoom siv kuaj

NI xav kom koj siv cov cuab yeej hauv Table 1 los ntsuas SCXI-1121. Yog tias tsis muaj cov cuab yeej no, siv cov kev xav tau teev tseg hauv Table 1 los xaiv cov khoom siv uas tsim nyog.

Table 1. Cov khoom siv kuaj

Khoom siv	Pom zoo qauv	Kev xav tau
Calibrator	Fluke 5700A	50 ppm
DMM	NI 4070 Nws	5 1/2-tus lej, 15 ppm
Resistors	—	120W thiab 800W, ± 10%

Yog hais tias koj tsis muaj kev cai kev twb kev txuas hardware, koj xav tau cov nram qab no connectors:

• Terminal thaiv, xws li SCXI-1320
• Shielded 68-pin connector cable
• 50-tus pin ribbon cable
• 50-pin breakout box
• SCXI-1349 adapter

Cov khoom siv no muab kev nkag tau yooj yim rau tus neeg tus pins ntawm SCXI-1121 pem hauv ntej thiab nram qab connectors.

Kev Xeem

Ua raws li cov lus qhia no txhawm rau txhim kho kev sib txuas thiab ib puag ncig thaum lub sijhawm ntsuas:

• Khaws kev sib txuas rau SCXI-1121 luv. Cov kab ntev thiab cov xov hlau tuaj yeem ua raws li cov kav hlau txais xov, khaws cov suab nrov ntxiv thiab thermal offsets uas cuam tshuam rau kev ntsuas.
• Siv cov hlau tiv thaiv tooj liab rau txhua qhov kev sib txuas cable rau SCXI-1121.
• Siv twisted-pair xaim kom tshem tawm cov suab nrov thiab thermal offsets.
• Khaws qhov ntsuas kub ntawm 18 ° C thiab 28 ° C.
• Khaws cov txheeb ze av noo qis dua 80%.
• Cia lub sij hawm sov so tsawg kawg yog 15 feeb rau SCXI-1121 los xyuas kom meej tias qhov ntsuas hluav taws xob nyob ntawm qhov kub thiab txias.

Txheej txheem Calibration

Cov txheej txheem calibration muaj cov kauj ruam hauv qab no:

1. Kev teeb tsa thawj zaug—Configure SCXI-1121 rau calibration.
2. Cov txheej txheem pov thawj -Txheeb xyuas qhov haujlwm uas twb muaj lawm ntawm SCXI-1121. Cov kauj ruam no txiav txim siab seb SCXI-1121 puas ua haujlwm hauv nws qhov kev txwv.
3. Cov txheej txheem hloov kho—Ua ib qho kev ntsuas sab nraud uas kho qhov SCXI-1121 calibration tas li hais txog qhov paub txog vol.tage qhov chaw.
4. Verifying Adjusted Values—Ua lwm qhov kev pov thawj los xyuas kom meej tias SCXI-1121 ua haujlwm nyob rau hauv nws qhov kev xeem txwv tom qab hloov kho.

Kev teeb tsa thawj zaug

Ua kom tiav cov kauj ruam hauv qab no txhawm rau teeb tsa SCXI-1121 rau kev ntsuas ntsuas. Saib daim duab 1 rau cov kauj ruam 1 thiab 2 thiab daim duab 2 rau cov kauj ruam 3 thiab 4.

1. Tshem cov ntsia hlau hauv av los ntawm SCXI-1121.
2. Tshem lub hau ntawm SCXI-1121 kom koj nkag tau rau cov potentiometers.
3. Tshem tawm sab phaj ntawm SCXI chassis.
4. Nruab SCXI-1121 rau hauv txoj cai-ntau tshaj qhov ntawm SCXI chassis.

Koj tsis tas yuav txuas SCXI-1121 rau DAQ ntaus ntawv. Cia qhov kev teeb tsa ntawm digital jumpers W32, W38, thiab W45 tsis hloov vim lawv tsis cuam tshuam rau cov txheej txheem calibration no.

Configuring Ib Nrab Choj Ua tiav Jumpers

Xyuas kom tseeb tias qhov kev ua tiav ib nrab ntawm lub network yog neeg xiam ua ntej calibrating SCXI-1121. Saib daim duab 3 rau qhov chaw ntawm ib nrab-bridge tiav jumpers. Xa mus rau Table 2 rau qhov tseeb jumper nqis los lov tes taw kev ua tiav network.

1. Thumbscrews
2. Voltage thiab Tam sim no Kho
3. Pem hauv ntej Connector
4. Serial Number
5. Output Null Kho Potentiometers
6. Thib ob-Stage Lim Jumpers
7. Tsheb teeb liab Connector
8. Lub npe khoom, tus lej sib dhos, tsab ntawv kho dua
9. SCXIBus Connector
10. Terminal Thaiv Mounting Qhov
11. Excitation Level Jumpers
12. Thawj-Stage Lim Jumpers
13. Thib ob-Stage Gain Jumpers
14. Thawj-Stage Gain Jumpers
15. Ib nrab Choj Ua tiav Jumpers
16. Input Null Kho Potentiometers
17. Excitation hom Jumpers
18. Ntsia Hlau Hauv Pem Teb

Daim duab 3. SCXI-1121 Parts Locator Diagram

Table 2. Ua tiav Network Jumpers

Configuring Gain Jumpers

• Txhua input channel muaj ob tus neeg siv-configurable nce stages. Thawj-stage nce muab kev nce qib ntawm 1, 10, 50, thiab 100. Qhov thib ob-stage nce muab kev nce qib ntawm 1, 2, 5, 10, thiab 20. Lub SCXI-1121 nkoj nrog thawj-stage nce mus rau 100 (txoj hauj lwm A) thiab qhov thib ob-stage nce mus rau 10 (txoj hauj lwm D).
• Txhawm rau hloov qhov kev nce qib ntawm cov channel tshwj xeeb ntawm SCXI-1121, xa mus rau Table 3 rau qhov nce jumper reference designators. Saib daim duab 3 rau qhov chaw ntawm qhov nce jumpers. Txav lub jumper mus rau txoj hauj lwm qhia hauv Table 4.

Table 3. Tau txais Jumper Reference Designators

Nkag mus Channel Number	Thawj-Stage Tau Txais Jumper	Thib ob-Stage Tau Txais Jumper
0	W3	W4
1	wb 19	wb 20
2	wb 29	wb 30
3	wb 41	wb 42

Table 4. Tau txais Jumper Positions

Tau txais	Kev teeb tsa	Jumper Position
Thawj-Stage	1	D
	10	C
	50	B
	100	A (Lub Hoobkas teeb tsa)
Thib ob-Stage	1	A
	2	B
	5	C
	10	D (Lub Hoobkas teeb tsa)
	20	E

Qhov kev txiav txim ntawm qhov chaw rau thawj- thiab thib ob-stage nce tsis muaj teeb meem ntev npaum li thawj-stage nce muab faib los ntawm qhov thib ob-stage nce sib npaug ntawm qhov xav tau qhov kawg nce tus nqi.
Configuring Filter Jumpers

• Txhua lub tswv yim channel kuj muaj ob tus neeg siv-configurable lim stages.
• SCXI-1121 ships nyob rau hauv 4 Hz txoj hauj lwm.
• Xa mus rau Table 5 rau qhov tseeb jumper teeb rau qhov xav tau txiav tawm zaus.
• Saib daim duab 3 rau qhov chaw ntawm jumper blocks ntawm SCXI-1121.
• Xyuas kom tseeb tias ob lub lim stages tau teem rau tib qhov chaw lim kom paub meej tias koj ua tiav qhov xav tau bandwidth.

Table 5. Lim Jumper Chaw

Nkag mus Channel Number	Thawj Lim Jumper		Thib Ob Lim Jumper
	4 Hz (Lub Hoobkas teeb tsa)	4 kHz	4 Hz (Lub Hoobkas teeb tsa)	4 kHz
0	W5-A	W5-B	W6	W7
1	W21-A	W21-B	W8	W9
2	W31-A	W31-B	wb 10	wb 11
3	W43-A	W43-B	wb 12	wb 13

Configuring Excitation Jumpers
Koj tuaj yeem teeb tsa txhua qhov kev tawm tsam ntawm SCXI-1121 rau ib qho voltage los yog hom excitation tam sim no. Txhua channel muaj ob lub jumpers rau lub hom phiaj no. Teem ob lub jumpers nyob rau hauv tib hom rau kev ua haujlwm raug ntawm cov excitation channel. Xa mus rau Table 6 los txiav txim seb yuav teeb tsa SCXI-1121 li cas hauv hom xav tau. SCXI-1121 ships rau koj nyob rau hauv lub voltagua mod.

Table 6. Voltage thiab Tam sim no hom Excitation Jumper Settings

Configuring tus Excitation Level
Txhua qhov excitation channel ntawm SCXI-1121 muaj ob qhov sib txawv tam sim no lossis voltage qib. Koj tuaj yeem teeb tsa ib qho channel rau ib qho ntawm cov theem hauv qab no:

• Hauv hom tam sim no0.150 mA lossis 0.450 mA
• Hauv voltagua mode3.333V los yog 10 V

Tom qab xaiv hom excitation ntawm qhov kev ua haujlwm xav tau - voltage lossis tam sim no, xa mus rau Table 7 los teeb tsa SCXI-1121 rau qib kev ua haujlwm. SCXI-1121 nkoj nrog lub voltage hom teem rau 3.333 V.

Table 7. Excitation Level Jumper Settings

Cov txheej txheem pov thawj

Cov txheej txheem pov thawj txiav txim siab seb qhov SCXI-1121 ua tau raws li nws cov kev txwv. Koj tuaj yeem siv cov ntaub ntawv no los xaiv lub sijhawm calibration tsim nyog rau koj daim ntawv thov.

Txheeb xyuas Analog Input Offsets
Ua kom tiav cov kauj ruam hauv qab no txhawm rau txheeb xyuas qhov analog input offsets:

1. Xa mus rau Table 12 nyob rau hauv seem Test Limits rau tag nrho cov chaw tsim nyog rau SCXI-1121. NI pom zoo kom txheeb xyuas txhua qhov ntau thiab tau txais txiaj ntsig, tab sis koj tuaj yeem txuag lub sijhawm los ntawm kev txheeb xyuas tsuas yog cov kab uas siv hauv koj daim ntawv thov.
2. Teem lub channel nce ntawm txhua txoj kev mus rau qhov nce koj xav sim, pib nrog qhov nce tsawg tshaj plaws muaj rau SCXI-1121. Saib rau Table 12 kom tau txais txiaj ntsig.
3. Teem lub lim lim rau txhua qhov ntawm SCXI-1121 txog 10 kHz.
4. Txuas lub calibrator mus rau analog input channel koj tab tom sim, pib nrog channel 0. Yog tias koj tsis muaj SCXI davhlau ya nyob twg thaiv xws li SCXI-1320, xa mus rau Table 13 txhawm rau txiav txim siab cov pins ntawm 96-pin pem hauv ntej connector uas sib haum. mus rau qhov zoo thiab tsis zoo inputs ntawm lub teev channel. Rau example, cov tswv yim zoo rau channel 0 yog tus pin A32, uas tau sau npe CH0+. Cov tswv yim tsis zoo rau channel 0 yog tus pin C32, uas tau sau npe CH0-.
5. Teem lub DMM rau voltage hom, thiab txuas nws mus rau qhov tso zis ntawm tib lub channel uas lub calibrator txuas nrog hauv kauj ruam 4. Xa mus rau Table 14 txhawm rau txiav txim siab cov pins ntawm 50-pin rear connector uas sib haum rau qhov zoo thiab qhov tsis zoo rau cov channel teev. . Rau example, qhov txiaj ntsig zoo rau channel 0 yog tus pin 3, uas tau sau npe CH 0+. Cov zis tsis zoo rau channel 0 yog tus pin 4, uas tau sau npe CH 0–.
6. Teem lub calibrator voltage rau tus nqi teev los ntawm Test Point nkag tau teev nyob rau hauv Table 12.
7. Nyeem cov zis voltage ntawm DMM. Yog cov zis voltage cov txiaj ntsig poob ntawm Upper Limit thiab Lower Limit qhov tseem ceeb, SCXI-1121 dhau qhov kev xeem.
8. Rov ua cov kauj ruam 4 txog 7 rau cov ntsiab lus xeem ntxiv.
9. Rov ua cov kauj ruam 4 txog 8 rau qhov seem analog input channels.
10. Rov ua cov kauj ruam 2 txog 9 rau qhov nce ntxiv thiab lim cov nqi teev tseg hauv Table 12.

Koj tau ua tiav kev txheeb xyuas cov analog input offsets. Yog tias ib qho ntawm koj qhov kev ntsuas poob sab nraum qhov kev xeem txwv uas tau teev tseg hauv Table 12, kho SCXI-1121 raws li tau piav qhia hauv ntu Kev Kho Analog Input Offsets.

Pov thawj Voltage Excitation Limits
Ua kom tiav cov kauj ruam hauv qab no txhawm rau txheeb xyuas qhov voltage excitation txwv:

1. Txuas lub 120 Ω resistor mus rau qhov tso zis ntawm excitation channel uas koj tab tom sim, pib nrog excitation channel 0. Yog tias koj muaj lub davhlau ya nyob twg thaiv xws li SCXI-1320, cov kev sib txuas ntawm excitation channel raug cim rau ntawm lub davhlau ya nyob twg thaiv. Yog tias koj tsis muaj lub davhlau ya nyob twg thaiv, xa mus rau Table 13 rau cov ntaub ntawv txuas.
2. Configure lub excitation channel rau 3.333 V theem.
3. Teem lub DMM rau voltage hom, thiab txuas lub DMM ua rau lub excitation tso zis kom ze li sai tau rau lub cev resistor.
4. Sib piv DMM nyeem ntawv rau cov kev txwv rau excitation qhia nyob rau hauv Table 8. Yog hais tias qhov kev nyeem ntawv poob ntawm lub Upper Limit thiab lub Lower Limit qhov tseem ceeb, SCXI-1121 dhau qhov kev xeem.
   • Table 8. SCXI-1121 Voltage Excitation Limits
     

     Kuaj Taw tes (V)	Upper Limit (V)	Tsawg Limit (V)
     3.333	3.334333	3.331667
     10	10.020000	9.980000
5. Configure lub excitation channel rau qib 10 V, hloov 120 Ω resistor nrog 800 Ω resistor, thiab rov ua cov kauj ruam 3 thiab 4.
6. Rov ua cov kauj ruam 2 txog 5 rau tag nrho cov seem seem.

Koj tau ua tiav kev txheeb xyuas qhov voltage excitation txwv. Yog tias ib qho ntawm koj qhov kev ntsuas poob sab nraum qhov kev txwv qhov ntsuas tau teev tseg hauv Table 8, kho SCXI-1121 raws li tau piav qhia hauv Kev Kho Mobtage Excitation section.

Txheeb xyuas cov kev txwv tam sim no
Ua kom tiav cov kauj ruam hauv qab no txhawm rau txheeb xyuas cov kev txwv tsis txaus siab tam sim no:

1. Tshem tawm cov resistor los ntawm excitation channel yog tias koj tsis tau ua li ntawd.
2. Kho cov channel mus rau 0.150 mA excitation theem.
3. Teem lub DMM rau hom tam sim no, thiab txuas mus rau qhov kev tso tawm channel excitation, pib nrog excitation channel 0. Yog tias koj tsis muaj lub davhlau ya nyob twg thaiv, saib daim duab 3 rau cov ntaub ntawv txuas.
4. Sib piv DMM nyeem ntawv rau cov kev txwv rau excitation qhia nyob rau hauv Table 9. Yog hais tias qhov kev nyeem ntawv poob ntawm lub Upper Limit thiab Lower Limit qhov tseem ceeb, SCXI-1121 dhau qhov kev xeem.
   • Table 9. SCXI-1121 Tam sim no Excitation txwv
     

     Kuaj Taw tes (mA)	Siab Limit (mA)	Kev txwv qis (mA)
     0.150	0.150060	0.149940
     0.450	0.450900	0.449100

5. Kho cov channel rau 0.450 mA excitation theem thiab rov ua cov kauj ruam 2 thiab 4.
6. Rov ua cov kauj ruam 2 txog 5 rau tag nrho cov seem seem.

Koj tau ua tiav kev txheeb xyuas cov kev txwv tsis pub dhau tam sim no. Yog tias ib qho ntawm koj qhov kev ntsuas poob qis dua qhov txwv tau teev tseg hauv Table 9, kho SCXI-1121 raws li tau piav qhia hauv ntu Kev Kho Kom Zoo Tam Sim No.

Cov txheej txheem hloov kho

Cov txheej txheem hloov kho cov analog input offsets, voltage excitation txwv, thiab cov txwv excitation tam sim no.

Kho Analog Input Offsets
Ua kom tiav cov kauj ruam hauv qab no los kho tus nqi offset null:

1. Teem lub channel nce ntawm cov channel koj tab tom kho kom nce 1. Teem lub lim tus nqi rau 4 Hz.
2. Txuas lub calibrator mus rau analog input channel koj xav kho. Xa mus rau Table 13 txhawm rau txiav txim siab cov pins ntawm 96-pin pem hauv ntej connector uas sib haum mus rau qhov zoo thiab qhov tsis zoo ntawm cov lus teev tseg. Rau example, cov tswv yim zoo rau channel 0 yog tus pin A32, uas tau sau npe CH0+. Cov tswv yim tsis zoo rau channel 0 yog tus pin C32, uas tau sau npe CH0-.
3. Teem lub DMM rau voltage hom, thiab txuas nws mus rau qhov tso zis ntawm tib lub channel uas lub calibrator txuas nrog hauv kauj ruam 2. Xa mus rau Table 14 txhawm rau txiav txim siab cov pins ntawm 50-pin rear connector uas sib haum rau qhov zoo thiab qhov tsis zoo rau cov channel teev. . Rau example, qhov txiaj ntsig zoo rau channel 0 yog tus pin 3, uas tau sau npe CH 0+. Cov zis tsis zoo rau channel 0 yog tus pin 4, uas tau sau npe CH 0–.
4. Teem lub calibrator voltage rau 0.0 V.
5. Kho qhov tso zis null potentiometer ntawm channel kom txog thaum DMM nyeem ntawv yog 0.0 ± 3.0 mV. Xa mus rau daim duab 3 rau qhov chaw potentiometer thiab Table 10 rau tus tsim siv potentiometer.
   • Table 10. Calibration Potentiometers Reference Designators
     

     Nkag mus Channel Number	Input Null	Tso zis Null
     0	R02	R03
     1	R16	R04
     2	R26	R05
     3	R36	R06

6. Teem lub channel nce mus rau qhov nce ntawm 1000.0 ntawm cov channel koj tab tom kho. Saib rau kab lus 3, 4, thiab 5 yog xav paub ntxiv.
7. Kho qhov input null potentiometer ntawm channel 0 kom txog thaum DMM nyeem ntawv yog 0.0 ± 6.0 mV. Xa mus rau daim duab 3 rau qhov chaw potentiometer thiab Table 10 rau tus tsim siv potentiometer.
8. Rov ua cov kauj ruam 1 txog 7 rau qhov seem analog inputs.

Koj tau ua tiav kho cov analog input offsets.

Kho Siab Voltage Excitation

Thaum koj kho cov excitation raws, ib txwm pib nrog lub voltage excitation thiab ces mus rau qhov tam sim no excitation. Siv lub voltage excitation reference raws li voltage siv rau qhov excitation tam sim no.

Ua kom tiav cov kauj ruam hauv qab no los kho cov voltage excitation:

1. Txuas lub 120 Ω resistor hla qhov tso zis ntawm cov yeeb yaj kiab uas koj tab tom kho.
2. Configure lub excitation channel rau 3.333 V excitation theem.
3. Teem lub DMM rau voltage hom, thiab txuas DMM ua rau cov excitation outputs ze li sai tau rau lub cev resistor.
4. Kho qhov excitation voltage potentiometer mus txog voltage nyeem poob ntawm 3.334333 V thiab 3.331667 V. Xa mus rau daim duab 3 rau qhov chaw potentiometer thiab Table 11 rau tus tsim cov potentiometer reference designator.

Table 11. Excitation Calibration Potentiometer Reference Designators

Nkag mus Channel Number	Excitation Channel
	Voltage Hom	Hom tam sim no
0	R10	R7
1	R20	R17
2	R30	R27
3	R40	R37

Nco tseg Cov kauj ruam no calibrates 10 V excitation theem tib lub sij hawm, tab sis qhov tseeb tiav yog txwv rau ± 0.2%. Txhawm rau ua tiav qhov raug zoo dua ntawm 10 V qib, ua raws cov qib 1 txog 4 tab sis teeb tsa qib excitation mus rau 10 V es tsis txhob 3.333 V. Yog tias koj ua li ntawd, 3.333 V theem ntawm cov channel no yuav raug ntsuas rau ± 0.2% es tsis txhob ± 0.04%. Hauv lub Hoobkas, SCXI-1121 yog ntsuas rau 3.333 V. Rov ua cov kauj ruam 1 txog 4 rau tag nrho cov seem seem. Koj tau ua tiav kho qhov voltage excitation channels.

Kho qhov kev xav tam sim no
Ua kom tiav cov kauj ruam hauv qab no los kho qhov excitation tam sim no:

1. Tshem tawm cov resistor los ntawm excitation channel yog tias koj tsis tau ua li ntawd.
2. Kho cov channel rau 0.150 mA tam sim no excitation theem.
3. Teem lub DMM rau hom tam sim no, thiab txuas nws mus rau qhov tso zis tawm channel uas koj xav kho.
4. Kho qhov excitation tam sim no potentiometer kom txog thaum tam sim no nyeem ntawv poob ntawm 0.150060 mA thiab 0.149940 mA. Xa mus rau daim duab 3 rau qhov chaw potentiometer thiab Table 11 rau tus tsim siv potentiometer.
   • Nco tseg Cov kauj ruam no ntsuas qib 450 μA tib lub sijhawm, tab sis qhov tseeb ua tiav yog txwv rau ± 0.2%. Txhawm rau ua tiav qhov raug zoo dua ntawm 450 μA qib, ua raws cov kauj ruam 1 txog 4 tab sis teeb tsa qib excitation rau 450 μA tsis yog 150 μA. Yog tias koj ua li ntawd, 150 μA theem ntawm cov channel no yuav raug ntsuas rau ± 0.2% es tsis txhob ± 0.04%. Nyob rau hauv lub Hoobkas, SCXI-1121 yog calibrated rau 150 μA.
5. Rov ua cov kauj ruam 1 txog 4 rau tag nrho cov seem seem.
   • Koj tau ua tiav kho cov kev ua kom zoo siab tam sim no.

Txheeb xyuas cov txiaj ntsig kho

Tom qab ua tiav cov kev hloov kho, nws yog ib qho tseem ceeb kom paub tseeb tias qhov kev ua haujlwm analog input, voltage excitation, thiab tam sim no excitation dua los ntawm rov ua cov kauj ruam uas teev nyob rau hauv cov txheej txheem pov thawj. Kev txheeb xyuas qhov kev hloov kho kom ntseeg tau tias SCXI-1121 ua haujlwm nyob rau hauv nws qhov kev sim txwv tom qab hloov kho.
Nco tseg Yog tias SCXI-1121 ua tsis tiav tom qab calibration, rov qab mus rau NI rau kev kho lossis hloov. Yog xav paub ntxiv txog yuav ua li cas hu rau NI rau kev kho lossis hloov pauv, xa mus rau Cov Ntaub Ntawv Txhawb Kev Pabcuam.

Xeem txwv

Table 12 muaj cov kev txwv xeem rau SCXI-1121. Yog hais tias lub module tau calibrated nyob rau hauv lub xyoo tas los, cov zis yuav tsum poob ntawm lub Upper Limit thiab Lower Limit tus nqi.
Table 12. SCXI-1121 Test Limits

Tau txais	Kuaj Taw tes (V)	4 Hz Filter Setting		10 kHz Filter Setting
		Saum toj Limit (V)	qis Limit (V)	Saum toj Limit (V)	qis Limit (V)
0.01*	225.0000	2.269765	2.230236	2.346618	2.303382
0.01*	0.0000	0.005144	—0.05144	0.006510	—0.006510
0.01*	—225.0000	—2.230236	—2.269765	—2.303382	—2.346618
0.02*	225.0000	4.534387	4.465613	3.750713	3.689287
0.02*	0.0000	0.005146	—0.005146	0.006540	—0.006540
0.02*	—225.0000	—4.465613	—4.534387	—3.689287	—3.750713
0.05*	90.0000	4.534387	4.465614	4.686836	4.613164
0.05*	0.0000	0.005146	—0.005146	0.006620	—0.006620
0.05*	—90.0000	—4.465614	—4.534387	—4.613164	—4.686836
0.01*	45.0000	4.534387	4.465613	4.686936	4.613064
0.01*	0.0000	0.005146	—0.005146	0.006720	—0.006720
0.01*	—45.0000	—4.465613	—4.534387	—4.613064	—4.686936
0.02*	22.5000	4.534387	4.465613	4.687516	4.612484
0.02*	0.0000	0.005146	—0.005146	—0.007300	—0.007300
0.02*	—22.5000	—4.465613	—4.534387	—4.612484	—4.687516
0.05*	9.0000	4.534388	4.465613	4.686911	4.613089
0.05*	0.0000	0.005147	—0.005147	0.006695	—0.006695
0.05*	—9.0000	—4.465613	—4.534388	—4.613089	—4.686911
1	4.5000	4.534295	4.465705	4.535671	4.464329
1	0.0000	0.005144	—0.005144	0.006520	—0.006520
1	—4.5000	—4.465705	—4.534295	—4.464329	—4.535671
2	2.2500	4.534292	4.465708	4.535693	4.464307
2	0.0000	0.005141	—0.005141	0.006542	—0.006542
2	—2.2500	—4.465708	—4.534292	—4.464307	—4.535693

Tau txais	Kuaj Taw tes (V)	4 Hz Filter Setting		10 kHz Filter Setting
		Saum toj Limit (V)	qis Limit (V)	Saum toj Limit (V)	qis Limit (V)
5	0.9000	4.534293	4.465707	4.535706	4.464294
5	0.0000	0.005142	—0.005142	0.006555	—0.006555
5	—0.9000	—4.465707	—4.534293	—4.464294	—4.535706
10	0.4500	4.534387	4.465613	4.535771	4.464229
10	0.0000	0.005236	—0.005236	0.006620	—0.006620
10	—0.4500	—4.465613	—4.534387	—4.464229	—4.535771
20	0.2250	4.534456	4.465544	4.535979	4.464021
20	0.0000	0.005305	—0.005305	0.006828	—0.006828
20	—0.2250	—4.465544	—4.534456	—4.464021	—4.535979
50	0.0900	4.534694	4.465306	4.536146	4.463854
50	0.0000	0.005543	—0.005543	0.006995	—0.006995
50	—0.0900	—4.465306	—4.534694	—4.463854	—4.536146
100	0.0450	4.535095	4.464905	4.536551	4.463449
100	0.0000	0.005944	—0.005944	0.007400	—0.007400
100	—0.0450	—4.464905	—4.535095	—4.463449	—4.536551
200	0.0225	4.535892	4.464108	4.537797	4.462203
200	0.0000	0.006741	—0.006741	0.008646	—0.008646
200	0.0225	—4.464108	—4.535892	—4.462203	—4.537797
250	0.0180	4.536294	4.463706	4.538614	4.461387
250	0.0000	0.007143	—0.007143	0.009463	—0.009463
250	—0.0180	—4.463706	—4.536294	—4.461387	—4.538614
500	0.0090	4.538303	4.461698	4.540951	4.459049
500	0.0000	0.009152	—0.009152	0.011800	—0.011800
500	—0.0090	—4.461698	—4.538303	—4.459049	—4.540951
1000	0.0045	4.542321	4.457679	4.546501	4.453499
1000	0.0000	0.013170	—0.013170	0.017350	—0.017350
1000	—0.0045	—4.457679	—4.542321	—4.453499	—4.546501
2000	0.00225	4.551389	4.448611	4.558631	4.441369

Tau txais	Kuaj Taw tes (V)	4 Hz Filter Setting		10 kHz Filter Setting
		Saum toj Limit (V)	qis Limit (V)	Saum toj Limit (V)	qis Limit (V)
2000	0.00000	0.022238	—0.022238	0.029480	—0.029480
2000	—0.00225	—4.448611	—4.551389	—4.441369	—4.558631
* Tus nqi muaj tsuas yog thaum siv nrog SCXI-1327 high-voltage terminal thaiv

Vaj huam sib luag daim duab

SCXI-1121 Pem hauv ntej thiab nram qab vaj huam sib luag daim duab

Table 13 qhia tus pin assignments rau SCXI-1121 pem hauv ntej vaj huam sib luag connector. Table 14 qhia tus pin assignments rau SCXI-1121 rear teeb liab connector.

Table 13. Pem hauv ntej Connector Pin Assignments

Table 14. Tsheb teeb liab Pin Assignments

National Instruments, NI, ni.com ib, and LabVIEW yog cov cim lag luam ntawm National Instruments Corporation. Saib rau Cov Lus Cog Tseg ntawm Kev Siv Tshooj ntawm ni.com/legal Yog xav paub ntxiv txog National Instruments trademarks. Lwm cov khoom lag luam thiab cov npe tuam txhab tau hais hauv no yog cov cim lag luam lossis cov npe lag luam ntawm lawv cov tuam txhab. Rau patents npog National Instruments cov khoom / thev naus laus zis, xa mus rau qhov chaw tsim nyog: Pab » Patents hauv koj software, patents.txt file ntawm koj cov xov xwm, lossis National Instruments Patent Notice ntawm ni.com/patents. © 2000–2009 National Instruments Corporation. Txhua txoj cai. 370258C-01 Nov 09 Cov ntaub ntawv no muaj cov ntaub ntawv thiab cov lus qhia rau calibrating National Instruments SCXI-1121 signal conditioning module.

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NATIONAL INSTRUMENTS SCXI-1121 Kev Kho Mob Module [ua pdf] Phau ntawv qhia SCXI-1121 Teeb liab Conditioning Module, SCXI-1121, Teeb liab Conditioning Module, Conditioning Module, Module

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