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INSTALLATION GUIDE

8-Slot PXI Backplane

This guide describes installation requirements for the 8-slot PXI backplane, 
shown in Figure 1.

Figure 1.  

8-Slot PXI Backplane

Summary of Contents for 8-Slot PXI Backplane

Page 1: ...INSTALLATION GUIDE 8 Slot PXI Backplane This guide describes installation requirements for the 8 slot PXI backplane shown in Figure 1 Figure 1 8 Slot PXI Backplane ...

Page 2: ... ground to the chassis in which the backplane is mounted If you do not desire to connect backplane ground to the chassis use insulated washers at these mounting holes Refer to Figure 4 for the position of the mounting holes Cooling Note National Instruments is not responsible for damage to the backplane if inadequate cooling is used You should mount a fan below the backplane Airflow should be from...

Page 3: ...tatic built up on your body by touching a grounded metal object before handling the PXI equipment Then touch the antistatic plastic package containing the backplane to a metal part of your PXI chassis before removing the backplane from the packaging Dimensions Figure 2 Dimensions 4 945 125 60 1 132 28 752 142 3 607 122 3 100 703 17 856 800 20 320 9 336 237 13 122 3 100 ...

Page 4: ...the backplane and a skew of less than 250 ps between slots drives the clock signal to each peripheral slot You can use this common reference clock signal to synchronize multiple modules in a measurement or control system You can drive PXI_CLK10 from an external source through the PXI_CLK10_IN pin on the P2 connector of the Star Trigger Slot or 10 MHz IN pin on the J1 connector Refer to the PXI Spe...

Page 5: ...20 is the power supply connector for the 8 slot backplane The location of the J20 connector is shown in Figure 4 Refer to Table 1 for the pin descriptions The mating connector for J20 is manufactured by Tyco Electronics and can be ordered with the part number 1648115 1 Note The system slot slot 1 receives 12 V power from pin 17 of J20 If this pin is not connected to 12 V the system controller will...

Page 6: ... to pin 7 of J21 No 6 LED1 Connects to pin 5 of J21 No 7 SMB_SDA Connects to pin C19 on J2 slot 1 No 8 SMB_ALERT Connects to pin E19 on J2 slot 1 No 9 SMB_SCL Connects to pin D19 on J2 slot 1 No 10 THERM1 optional Connects to pin 2 of J21 No 11 THERM2 optional Connects to pin 1 of J21 No 12 GND Backplane ground plane Yes 13 GND Backplane ground plane Yes 14 12 V Backplane 12 V power plane Yes 15 I...

Page 7: ...descriptions The mating connector for pins 1 6 of J21 is manufactured by Molex and can be ordered with the part number 22 01 2067 Table 2 Connector J21 Pin Descriptions Connector Pin Signal Description 1 THERM2 Connects to pin 11 of J20 2 THERM1 Connects to pin 10 of J20 3 No Pin 4 NC Not connected 5 LED1 Connects to pin 6 of J20 6 5V Connects to backplane s 5V power plane 7 INH Connects to pin 5 ...

Page 8: ... 8 slot PXI backplane is RoHS compliant 10 MHz System Reference Clock PXI_CLK10 Maximum clock skew between slots 250 ps Built in 10 MHz clock Accuracy 25 ppm guaranteed over the operating temperature range Maximum jitter 5 ps RMS in 10 Hz to 1 MHz range External clock sources Connectors Connector J1 on rear of backplane ground referenced or Slot 2 J2 pin D17 Input frequency 10 MHz 100 ppm or bette...

Page 9: ...ration 9 8 Slot PXI Backplane Installation Guide External clock output Connector Connector J1 on rear of backplane ground referenced Output amplitude 1 Vpp 20 squarewave into 50 Ω 2 Vpp into open circuit Output impedance 50 Ω 5 Ω ...

Page 10: ...onal Instruments trademarks Other product and company names mentioned herein are trademarks or trade names of their respective companies For patents covering National Instruments products refer to the appropriate location Help Patents in your software the patents txt file on your CD or ni com patents 2007 National Instruments Corporation All rights reserved 372171A 01 Apr07 ...

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