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Chapter 2

Using the SCXI-1129

SCXI-1129 User Manual

2-26

ni.com

Figure 2-16.

Wire ORed Operation

Software Scanning

Unlike hardware-timed scanning, software scanning does not use
hardware-generated triggers. In software scanning, a list of matrix
configurations, kept by the software, is scanned by selecting the desired
configuration on the SCXI-1129 and making the required measurements.
Refer to the

NI-SWITCH Software User Manual

for more information on

software scanning.

Independent Switch Control

You can independently control all 276 relays on the SCXI-1129, including
connection relays and HVAB relays. To close/open the relays, refer to them
by their appropriate name. Refer to Table 2-3.

Note

Independent switch control is valid only in the 4

×

16 configuration.

Backplane
Connector

HVAB

RSC

Front Connector

Backplane
Connector

Front Connector

SCXI-1129

Backplane
Connector

Front Connector

SCXI-1129

Trig 0

Trig 1

Trig 6

Trig 7

•

•

•

Backplane

Cabled SCXI-1129

EXTTRIGIN

from DMM VMC

SCANADVD

To DMM

VMC

SCANADVD

«
...
57
58
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»

Содержание NI SCXI-1336

Страница 1: ...SCXI 1336...

Страница 2: ...SCXI SCXI 1129 User Manual 256 Crosspoint High Density Matrix SCXI 1129 User Manual February 2001 Edition Part Number 322740A 01...

Страница 3: ...09 725 725 11 France 01 48 14 24 24 Germany 089 741 31 30 Greece 30 1 42 96 427 Hong Kong 2645 3186 India 91805275406 Israel 03 6120092 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico 5 28...

Страница 4: ...failures caused by owner s failure to follow the National Instruments installation operation or maintenance instructions owner s modification of the product owner s abuse misuse or negligent acts and...

Страница 5: ...ents could void the user s authority to operate the equipment under the FCC Rules Class A Federal Communications Commission This equipment has been tested and found to comply with the limits for a Cla...

Страница 6: ...onformity DoC for information pertaining to the CE Mark compliance scheme The Manufacturer includes a DoC for most every hardware product except for those bought for OEMs if also available from an ori...

Страница 7: ...ext denotes items that you must select or click on in the software such as menu items and dialog box options Bold text also denotes parameter names italic Italic text denotes variables emphasis a cros...

Страница 8: ...1 14 Connecting the SCXI 1129 to the DMM in a PXI 1010 Chassis 1 16 DMM in PXI Slots 1 through 7 Configuration 1 16 DMM in PXI Slot 8 Configuration 1 17 Connecting the SCXI 1129 to the DMM in the PXI...

Страница 9: ...External Instruments 2 22 Synchronous Scanning 2 23 Handshaking Scanning 2 23 Multimodule Scanning 2 24 Chain Triggering 2 24 Example 2 24 Wire ORed 2 25 Dummy Entries 2 25 Software Scanning 2 26 Ind...

Страница 10: ...erminal Block Matrix Configuration the SCXI 1129 can become many different matrix types Refer to Table 1 1 for a complete list of matrix configurations To accommodate even larger testing needs you can...

Страница 11: ...install software for the SCXI 1129 complete the following 1 Install your ADE if you have not done so already 2 Insert your NI SWITCH software CD into your CD drive The installation window appears auto...

Страница 12: ...er Safety Information The following cautions contain important safety information concerning hazardous voltages Cautions Do not operate the device in an explosive atmosphere or where there may be flam...

Страница 13: ...or measuring up to 150 V When connecting or disconnecting signal lines to the SCXI terminal block screw terminals make sure the lines are powered off Potential differences between the lines and the SC...

Страница 14: ...ing a grounding strap or by holding a grounded object Touch the antistatic package to a metal part of your computer chassis before removing the module from the package Caution Never touch the exposed...

Страница 15: ...nsert the SCXI 1129 module into the rightmost slot Gently guide the module into the module guides and push it to the back of the slot until the connectors make good contact The module must be firmly e...

Страница 16: ...stem You need the following items for this installation SCXI 1000 1000DC 1001 chassis with the SCXI 1129 modules installed SCXI 1357 4 slot 1358 12 slot kit 1 2 and or 8 slot HVAB backplane adapter HV...

Страница 17: ...backplane adapters behind slots 1 and 2 if needed 3 Install the 8 position HVAB plugs to connect the HVAB backplane adapters as needed 4 Connect the HV8 BAN4 cable from the DMM to the HVAB connector b...

Страница 18: ...n the single 12 slot chassis configuration refer to Figure 1 3 while completing the following steps Figure 1 3 12 Slot Single Chassis Installation 1 Install the 8 slot HVAB backplane adapter behind sl...

Страница 19: ...empty the system will not operate It is this module that you must specify in MAX as the cabled module to the DMM Connecting the SCXI 1129 to the DMM in a Multichassis System The following sections des...

Страница 20: ...er to Figure 1 4 while completing the following steps Figure 1 4 4 Slot to 4 Slot Multichassis Configuration Parts Locator Diagram 1 2 Slot HVAB Backplane Adapter 2 8 Position HVAB Plug 3 1 Slot HVAB...

Страница 21: ...d in slot 4 to establish communications with the chassis If slot 4 is empty the system will not operate It is this module that you must specify in MAX as the cabled module to the DMM If a chassis is c...

Страница 22: ...ile completing the following steps Figure 1 5 4 Slot to 12 Slot Multichassis Configuration Parts Locator Diagram 1 2 Slot HVAB Backplane Adapter 2 1 Slot HVAB Backplane Adapter 3 HV8 BAN4 Cable 4 NI 4...

Страница 23: ...4 slot chassis and slot 12 of the 12 slot chassis to establish communications with all the chassis in the system If slot 4 is empty in the 4 slot chassis or slot 12 is empty in the 12 slot chassis th...

Страница 24: ...assis Configuration section 2 Connect the HV8 HV8 cable from the first chassis normally the connector behind slot 1 to the HVAB connector behind slot 12 of the next chassis 3 Connect the SH9MD 9MD cab...

Страница 25: ...stallation PXI chassis with the SCXI 1129 modules installed SCXI 1357 kit Two 1 slot HVAB backplane adapters One 2 slot HVAB backplane adapter HV8 to BAN4 cable Two 8 position HVAB plugs SH9MD 9MD cab...

Страница 26: ...the 8 position HVAB plugs to connect the HVAB backplane adapters as needed 5 Connect the HV8 BAN4 cable from the DMM to the HVAB connector behind SCXI slot 4 of the SCXI subsystem 6 You can install an...

Страница 27: ...behind SCXI slot 4 6 Connect the SH9MD 9MD cable from the DMM to the AUX IN connector 7 You can install any additional SCXI 1129 modules in any slot that has an HVAB backplane adapter behind it DMM in...

Страница 28: ...e adapter National Instruments DAQ device DAQ cable 1 8 in flathead screwdriver At least one other SCXI module other than the SCXI 1129 installed in the chassis Consult the documentation for your SCXI...

Страница 29: ...DAQ cable to the cable adapter at the rear connector 3 Attach the other end of the DAQ cable to the National Instruments DAQ device 4 Check the installation 5 Power on the SCXI chassis 6 Power on the...

Страница 30: ...e SCXI 1129 without the need for additional cabling 3 Power on the power to both the PXI and SCXI chassis Connecting the SCXI 1129 to an External DMM You need the following items to complete this inst...

Страница 31: ...of the HV8 BAN4 or BAN2 WIRE cable to the inputs of your external DMM device 4 Connect the handshaking lines from the front of either the SCXI 1333 SCXI 1334 SCXI 1335 SCXI 1336 SCXI 1337 or SCXI 1339...

Страница 32: ...have your chassis powered on 1 Click Next 2 Select your communication path except in the case of the SCXI 2000 and click Next 3 Select the module cabled to your communication path except in the case o...

Страница 33: ...ctions used to configure the chassis 5 Select the module that is intended for that slot and click Next 6 You are now given the option to make this the module that controls the chassis Select the DAQ d...

Страница 34: ...s A multiplexer is typically organized into channels and commons while a matrix is organized into columns and rows You can connect any column to any number of rows and any row to any number of columns...

Страница 35: ...to drive a single input You can use the SCXI 1129 with one of six different terminal blocks to make various matrix configuration as shown in Table 2 1 Terminals provide the means of connection to lab...

Страница 36: ...canner Advance Output SCAN ADV 8 Safety Ground Lug 4 3 2 2 5 6 7 8 1 B4R3 B4R2 B4R1 B4R0 B4C15 B4C14 B4C13 B4C12 B4C11 B4C10 B4C9 B4C8 B4C7 B4C6 B4C5 B4C4 B4C3 B4C2 B4C1 B4C0 B2C15 B2C14 B2C13 B2C12 B...

Страница 37: ...of the SCXI 1129 in the 4 16 configuration The diagram is the basic configuration of the SCXI 1129 and shows the channels name that NI SWITCH uses With software you can create different configurations...

Страница 38: ...3 High Voltage Rear Signal Connector Digital Comm Low Voltage Rear Panel Signal Connector SCXIBus Connector B1R0 Bank 1 Row 0 B1C0 Bank 1 Column 0 Each row and column consists of two wires One for sou...

Страница 39: ...AB or the terminal block Columns are accessed through the terminal block This configuration provides a more convenient way to create matrixes for applications that require a higher column count than t...

Страница 40: ...tor Digital Comm Low Voltage Rear Panel Signal Connector SCXIBus Connector B1R0 Bank 1 Row 0 B1C0 Bank 1 Column 0 Each row and column consists of two wires One for source and one for return Note The a...

Страница 41: ...trixes You can access the HVAB at up to four rows at a time To connect signals to the HVAB connect the chosen rows to COM0 COM3 then connect COM0 COM3 to AB0 AB3 This configuration provides a more con...

Страница 42: ...age Rear Signal Connector Digital Comm Low Voltage Rear Panel Signal Connector SCXIBus Connector B1R0 Bank 1 Row 0 B1C0 Bank 1 Column 0 Each row and column consists of two wires One for source and one...

Страница 43: ...single block You can now make connections using either the HVAB or the terminal block To connect signals to the HVAB connect the chosen rows to COM0 COM3 then connect COM0 COM3 to AB0 AB3 Columns are...

Страница 44: ...gital Comm Low Voltage Rear Panel Signal Connector SCXIBus Connector B1R0 Bank 1 Row 0 B1C0 Bank 1 Column 0 Each row and column consists of two wires One for source and one for return Note The analog...

Страница 45: ...are treated as a contiguous block This configuration provides an easy way to create a full 256 crosspoint matrix for applications requiring more than four rows but still needing many columns You can...

Страница 46: ...Digital Comm Low Voltage Rear Panel Signal Connector SCXIBus Connector B1R0 Bank 1 Row 0 B1C0 Bank 1 Column 0 Each row and column consists of two wires One for source and one for return Note The anal...

Страница 47: ...of the SCXI 1129 configured as a 16 16 matrix The diagram shows connections for a general test setup that connects several instruments to one complex DUT In this way you can use the same instrumentat...

Страница 48: ...Digital Comm Low Voltage Rear Panel Signal Connector SCXIBus Connector B1R0 Bank 1 Row 0 B1C0 Bank 1 Column 0 Each row and column consists of two wires One for source and one for return Note The analo...

Страница 49: ...ger matrixes You can expand matrix modules through the terminal blocks by connecting columns and or rows Figure 2 11 shows an example of an 8 64 matrix created by connecting two 8 32 matrixes using a...

Страница 50: ...terminal blocks of the same type together Daisy chaining different types of terminal blocks together can cause damage to the module or to the equipment connected to the module For example you can dai...

Страница 51: ...1129 SCXI 1129 User Manual 2 18 ni com Figure 2 12 Example of Daisy Chained Modules 1 Matrix Expansion Plugs 2 SCXI 1333 Terminal Block 3 Thumbscrews 4 SCXI 1129 Front Connector 1 2 3 1 4 SC XI PO WE...

Страница 52: ...th expand the matrix size and connect instruments to DUTs By connecting the configuration relays B0COMx to B3COMx you can connect the rows of the four 4 16 matrixes and the two 4 32 matrixes so that a...

Страница 53: ...nning The SCXI 1129 provides a very flexible scanning architecture You have individual control over every crosspoint and configuration relay which means you can Do random switching Do multiplexing Use...

Страница 54: ...iting for triggers the switch state of the matrix can be changed When the matrix has changed state the scan list can be instructed to send a Scanner Advanced SCANADVD signal to the measurement instrum...

Страница 55: ...sis Make sure that the correct chassis is chosen for your particular application Note Trig0 Trig7 refers to ttl0 ttl7 in NI SWITCH Hardware Timed Scanning Using External Instruments When using the SCX...

Страница 56: ...ng or falling edges If you have more that one SCXI 1129 module it is not necessary to cable the VMC to each module You can bus the VMC onto the SCXI backplane Trig 0 to Trig 7 allowing other modules t...

Страница 57: ...g When scanning multiple modules there is a chance of channel contention In other words more than one module could be competing for the same channel if switches do not open and close at the right time...

Страница 58: ...issued until the last module releases the line When the last module releases the SCANADVD line the measurement device receives the signal to take a new measurement This method also guarantees no chan...

Страница 59: ...ITCH Software User Manual for more information on software scanning Independent Switch Control You can independently control all 276 relays on the SCXI 1129 including connection relays and HVAB relays...

Страница 60: ...Bus Relays Bank 1 Bank 2 Bank 3 Bank 4 B1R0C0 B1R0C15 B2R0C0 B2R0C15 B3R0C0 B3R0C15 B4R0C0 B4R0C15 B1COM0 B1COM3 AB0 B1R1C0 B1R1C15 B2R1C0 B2R1C15 B3R1C0 B3R1C15 B4R1C0 B4R1C15 B2COM0 B2COM3 AB1 B1R2C...

Страница 61: ...er of 2 wire crosspoints 256 Matrix type Quad 4 16 Common mode voltage Channel to channel 150 Vrms or DC Channel to earth 150 Vrms or DC Maximum allowed voltage AC 150 Vrms DC 150 VDC Maximum switchin...

Страница 62: ...e Mechanical at 180 cpm 5 107 operations Electrical at maximum load 1 105 operations Trigger Characteristics Scanner advanced pulsewidth 1 s to 64 s 6 bit programmable Scanner advanced delay 1 s to 64...

Страница 63: ...EN 55011 Class A at 10 m FCC Part 15A above 1 GHz Electrical immunity Evaluated to EN 61326 1998 Table 1 Note For full EMC and EMI compliance you must operate this device with shielded cabling See the...

Страница 64: ...nfiguration Use the 1 slot 2 slot and 8 slot HVAB backplane adapters to connect the HVAB of the SCXI 1129 to the DMM You can also use them to establish HVAB connections across multiple SCXI 1129 modul...

Страница 65: ...i com Use an HV8 BAN4 cable to connect the HVAB of the SCXI 1129 s to the DMM analog bus Use 8 position HVAB plugs to interconnect the HVAB of the HVAB backplane adapters Contact National Instruments...

Страница 66: ...re C 1 SCXI 1129 Block Diagram Com 0 Com 1 Com 2 Com 3 Drive Circuitry 4 x 64 Lines Controlled by FPGA Matrix Connection Relays 4 x 16 Matrix Relays 4 x 16 Matrix Relays 4 x 16 Matrix Relays 4 x 16 Ma...

Страница 67: ...portant that you incorporate the safety interlock scheme into the terminal block cable The safety interlock disconnects the high voltage bus from the matrix if the terminal block or matrix configurati...

Страница 68: ...1 B4C0 4R3 4R2 4R1 4R0 B3C15 B3C14 B3C13 B3C12 B3C11 B3C10 B3C9 Pin Number Signal Name Column A B C D Signal Name TBEEOUT SCANADV NC NC NC B2C15 B2C14 B2C13 B2C12 B2C11 B2C10 B2C9 B2C8 B2C7 B2C6 B2C5...

Страница 69: ...n the scan list TBEEEN Input Terminal block EEPROM chip select signal TBEEOUT Output Terminal block EEPROM data output signal TBEECLK Input Terminal block EEPROM clock input signal BMOSI Input Termina...

Страница 70: ...low level switch functions Check the return codes of the NI SWITCH operation to ensure that there are no errors negative values or warnings positive values You can also use the NI Spy utility which is...

Страница 71: ...es You can plug in a module that does not support the HVAB The non SCXI 1129 module does not connect to the HVAB or the digital communication lines on the HVAB backplane adapter Must I install the com...

Страница 72: ...ation E 3 SCXI 1129 User Manual HVAB plug You now have a 4 256 matrix that uses the backplane to automatically connect rows You can use either the SCXI 1333 quad 4 16 or SCXI 1334 4 64 terminal blocks...

Страница 73: ...he latest example programs system configurators tutorials technical news as well as a community of developers ready to share their own techniques Customer Education National Instruments provides a num...

Страница 74: ...ites from the Worldwide Offices section of ni com Branch office Web sites provide up to date contact information support phone numbers e mail addresses and current events If you have searched the tech...

Страница 75: ...0 3 k kilo 103 M mega 106 G giga 109 Symbols degrees ohms percent plus or minus A A amperes AC alternating current ADE application development environment B bus the group of conductors that interconne...

Страница 76: ...ator interfaces and counters digital multimeter a multifunction meter used to make measurements such as voltage current resistance frequency temperature and so on DMM See digital multimeter drivers dr...

Страница 77: ...inputs that sequentially connects each of its inputs to its output typically at high speeds in order to measure several signals with a single analog input channel N NI SWITCH an IVI based instrument...

Страница 78: ...entation the National Instruments product line for conditioning low level signals within an external chassis near sensors so only high level signals are sent to DAQ devices in the noisy PC environment...

Страница 79: ...B3C0 to B3C15 signal table D 3 B3C0 to B3C15 signal table D 3 B4C0 to B4C15 signal table D 3 B4C0 to B4C15 signal table D 3 block diagram of SCXI 1129 C 1 BMOSI signal table D 3 C cables B 1 to B 2 ch...

Страница 80: ...n assignments figure D 1 signal descriptions table D 3 G GND signal table D 3 H handshaking scanning mode description 2 23 to 2 24 fails to work with third party DMM E 1 to E 2 hardware installation S...

Страница 81: ...32 matrix configuration 2 6 to 2 7 4 64 matrix configuration 2 10 to 2 11 8 16 matrix configuration 2 8 to 2 9 8 32 matrix configuration 2 12 to 2 13 16 16 matrix configuration 2 14 to 2 15 terminal...

Страница 82: ...tware scanning 2 26 SCXI chassis installing SCXI 1129 into See installation SCXI 1129 accessories B 1 to B 2 block diagram C 1 common questions E 1 to E 3 front connector D 1 to D 3 overview 1 1 to 1...

Страница 83: ...on column and row expansion figure 2 19 methods table 2 17 terminal blocks compatible with SCXI 1129 B 1 transfer characteristics SCXI 1129 A 1 to A 2 trigger characteristics SCXI 1129 A 2 troubleshoo...

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