NI CB-2612 User GuideThe NI CB-2162 is a connector

文件名称: NI CB-2612 User Guide

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详细说明：The NI CB-2162 is a connector block and prototyping board for National Instruments digital waveform generator/analyzer modules. The NI CB-2162 provides an easy way to complete the following tasks: • Terminate digital I/O (DIO) and control channels • Connect to other devices for testing and debugging • Develop and interface to prototype circuits • Probe DIO and control channels This guide explains how to set up and use the NI CB-2162 single-ended DIO accessory.Parts Locator Diagram Refer to Figure I to locate connectors and components on the NI CB-2162 igure 1. NI CB-2162 Parts Locator Diagram W/4------, -4686885 中 00000o。 oO D00000。o。!。o。o。oco。 0C0000OO O 兮今心骨心中业它 o|。od。 a clolololololololo P-Ta_ 19 CLKgUT SFRCBI N OOaCooQ OOOOOOoC oOaC0ooo NATONAL INSTRUMEN OOOOOOOC O 0aCO0Oo G 。 CNooc 189。。。NICB/SCB-2162。。。。° ooacooc。 SINGLE-ENDE OOCCoooo D[GITAL I/C ACCESSORY 。 Cnooc FOR PATENTS: N COM/PATENTS 68-Pin Digital Data Control(DDC)Connector 6 Prototyping Area Power and Ground Solder Pads 2 Termination Sockets 7 Prototyping Area 3 Control and ground Header pairs 8 Labeling Strips 4 Prototyping Area Power Connectors 9 DIO and Ground Header Pairs 5 Prototyping Area Power LED NI CB-2162 User Guide C National Instruments 3 Installing Cables A cable connects the ni CB-2162 to the digital waveform generator/analyzer. Figure 2 shows how to install a cable Figure 2. Connecting a 68-Pin Digital Waveform Generator/Analyzer to the CB-2162 NIPX|-1042 的「1 ①M电 B8A◆,。画 1 PXI Chassis with NI Digital Waveform 2 Cable GeneratorAnalyze 3 NI CB-2162 Accessory Refer to Figure 2 as you complete the following steps to install the supported cable Caution connecting the cable, disconnect powcr from thc module, accessory, and any other connected hardware to prevent damage to the hardware and personal injury. NI is liable for damage resulting from improper connections 1. Install Nl-HSDIO or NI-DAQmx and the digital waveform generator/analyzer by following the installation procedure in the Getting Started Guide that shipped with your device Caution attaching any cables or accessories, install the digital waveform r/analyzer. refer to the getting Started Guide that shipped with your de for instructions on installing the module generator/analyzer module and secure the cable with the captive screws on the cabc B 2. Attach either end of the cable assembly to the ddc connector of the digital wavefo connecto 3. Attach the other end of the cable assembly to the ddc connector of the ni cB-2162 and sccurc thcm togcthcr with the captive screws on the cable connector 4ni.comiNicB-2162UserGuide Connecting Signals Each DIO, PFI, and clock channel of the digital waveform generator/analyzer connects to a corresponding pin on the Ni CB-2162 Refer to Figure I for the location of these pins on the NI CB-2162 △ Caution rcmovc powcr & a bowering down the digital waveform generator/analyzer module, the prototyping arca of the NI CB-2162 NI is liable for any damage resulting from improper signal connections Figure 3 shows the ddC connector pinout of the NI CB-2162 Figure 3. NI CB-2162 DDC Connector Pinout D|o31 35DIO GND 2 GND D|O29337Do28 GND Do27539D|o26 GND 40 GND 41Do24 RESERVED842 GND D|O23943Do22 Do211145D020 GND1246GND Do191347D018 GND14 48 GND D|o171549D|o16 GND GND D|O151751Do14 GND 52 RESERVED/PFL_O D|O131953DO12 GND 20 54 GND D|O112155Do10 Do92357Do8 GND 2458 GND DO72559D06 PFI12660RESERVED D|o52761Do4 GNDGND D|O3|2963Do2 PF|33064PF|2 D|O13165Do0 GND GND DDC CLK OUT/PFL_4 STROBE/PFL_5 GND GND NI CB-2162 User Guide C National Instruments5 Note Refer to the help file for your device for information about the number of available DIo channels on your device. DIO <20.31> or PFI 0 may not be licable to your device The function of ddC clK out/PFi 4 and STROBE/PFI 5 may bc unique to your devicc Table l describes the DDC signals shown in Figure 3 Table 1. DDC Connector Pinout descriptions DDC Pin Signal Description DIO<0.31> Bidirectional digital data channels 0 through 3 1 STROBE/PFI 5 External sample clock source for pattern acquisition or gcncral-purposc PFI DDC CLK OUT/PFI 4 Exported sample clock signal or general-purpose PFI PFI<0.3> Programmable functional interface(PFD)channels 0 through 3 GND Ground reference for signals RESERVED These channels are reserved for system use. Do not connect signals to these channels Refer to your device documentation for support The NI CB-21 62 provides connectivity to up to 32 of the single-ended DIO channels of an NI digital waveform generator/analyzer. The 32 diO channels are divided into two bundles of 16 2 header pins. Each bundle is d by signal and ground pairs the ground return paths for the dio channels You can makc connections to the dio channcls thc pfi channcls, DDC CLK oUT/PFI 4 or STROBE/PFI 5 on the ni CB-2162 using a l x 2 header receptacle, ribbon cable, a wire-wrap technique or by soldering directly to the pins. Examples of how to make these connections are p wing sections tions that exceed fthe m m ratings for the ni cB-2162 or the ni digital waveform generator analyzer module can damage the module and Iter. ma out ratings are provided in th nd in the specifications document that shipped with the digital waveform analyzer. NI is liable for any damage resulting from such signal connections 6ni.comNiCb-2162UserGuide Using 1 x 2 Header Receptacles Each signal and ground header pair is labeled on the Ni CB-2162 and in Figure 1. These header pairs are arranged so that you can make quick connections using a l x 2 header receptacle to a coaxial cable assemblv Note Header receptacle assemblies are not included with the ni cB-2162, but you can create custom assemblies by purchasing parts from vendors such as 3M receptacle documentation to assure that proper connections are made to signal and ground o Connectivity is made by inserting the receptacle onto the appropriate header pair. Refer to the Figure 4 shows how to make 1 x 2 header receptacle connections Figure 4. 1 x 2 Header Receptacle 11×2 Header Receptacle 2 Header pin pair NI CB-2162 User Guide C National Instruments 7 Using a ribbon cable The header pairs on the ni cB-2162 are available for single wire probing. You also can use lbbon cables to easily connect a lar mber of channels to other devices. Cable ty and quality can dramatically affect how well the signal integrity is maintained. N recommends using short twisted Refer to the device or cable manufacturer for additional information on proper connectivity to the ni CB-2162 signal and ground connections Figure 5 shows how to connect a ribbon cable to the accessory Figure 5. Using a Ribbon Cable with the NI CB-2162 TERMINAT. ON OOOOOO odalalololoololololololo 小自个,节争听321 CLKOUT数RoBE △ 0o0ooooo ooo。oooo 9。 ooooooo oooooooo ATONAL TRUMENIS8 00000000 oo 32688 NI CB/SCB-21628889cm SINGLE-ENDED 。 ooooooo DIGITAL I/O ACCESSORY ooo。oo "。△ o口 ROCS/N ASsY188290C-01 FOR PATENTS; NI. COM/PATENTS POWER 8 ni. com NI CB-2162 User Guide Making a Wire-Wrap Connection Make connections from the appropriate 1 x 1 header with a standard wire-wrap tool and 30-gauge or similar wire. Strip the wire and insert it into the receptacle end ofthe wire-wrap tool Place the wire-wrap tool over the appropriate header pair pin, and twist the tool around the header post. You then can make connections to the device under test(dUT)as defined by the device manufacturer. Connect the DIO channel and ground header pins for each channel being used Figure 6 provides an illustration for making a wire-wrap connection Figure 6. Wire-Wrap Connections 1 Wire-Wrap Tool 3 Header Pin Receptacle 2 Stripped Wire Terminating Signals Termination of high-speed digital signals is necessary to prevent signal reflections and to force signal channels to a known state when no signal is present. Sockets for terminating resistors are connected to all dio and control channels on the ni cB-2162. These sockets are labeled in Figure 1 Note Proper termination needs are application-specific. For some special considerations for choosing resistor values, refer to the NI CB-2162 User Guide C National Instruments9 Minimizing the effects of stubs Stubs are unterminated tributaries from the original signal path. Stubs decrease the signal quality of the system by adding reflections to the transmission channels. To minimize the effect ofstubs termination is placed at the end of the signal path If your signal transmission line ends on the ni cB-2162, you can use the provided termination socket. If your signal terminates somewhere other than the ni CB-2162, N recommends terminating the transmission line at the final signal destination Note Refer to the help file for your device for more information about proper signal termination Terminating Dlo Channel Signals Table 2 shows the relationship between dio channels and the termination sockets Table 2. DIo Termination sockets DIO Channels Termination socket DIO<0.7> J13 DIO<8.15> J15 DIO<16.23> J17 DIO<24.31> J19 Note Refer to the help file for your device for information about the number of available DIo channels on your device. DIO <20.3 1> may not be applicable to your device You can use different resistor networks and jumper placements to terminate the dio channels in multiple configurations Figure 7 shows the J13 connector as an example of this termination scheme Figure 7. Termination Connectivity J13 TERMINATION 10 ni. com NI CB-2162 User Guide

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