National Instruments NI 9157 User manual

OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9157/9159
Reconfigurable Embedded Chassis with Integrated MXI-Express (x1)
Figure 1. NI 9157/9159
This document describes how to connect the NI 9157/9159 to a
MXI-Express host and one or more other chassis, and how to use
the features of the NI 9157/9159. This document also contains
specifications for the NI 9157/9159.
1LEDs
2 Upstream Port
3 MXI-Express LINK LEDs
4 Downstream Port
5 Power Connector
6 DIP Switches
4
6
2
5
1
C
C
V2
V1
INPUT
9-30 V
35W MAX
NO FPGA APP
USER FPGA1
USER FPGA2
USER FPGA3
P
USER FPGA1
USER FPGA2
USER FPGA3
POWER
USER FPGA1
USER FPGA2
USER FPGA3
LINK LINK
UPSTREAM
DOWNSTREAM
MXI-Express RIO
NI 915X
3
OFF

NI 9157/9159 Operating Instructions and Specifications 2 ni.com
Safety Guidelines
Operate the NI 9157/9159 only as described in these operating instructions.
Safety Guidelines for Hazardous Locations
The NI 9157/9159 is suitable for use in Class I, Division 2, Groups A, B,
C, D, T4 hazardous locations; Class 1, Zone 2, AEx nA IIC T4 and Ex nA
IIC T4 hazardous locations; and nonhazardous locations only. Follow these
guidelines if you are installing the NI 9157/9159 in a potentially explosive
environment. Not following these guidelines may result in serious injury or
death.
Caution Do not disconnect the power supply wires and connectors from the controller
unless power has been switched off.
Caution Substitution of components may impair suitability for Class I, Division 2.
Caution For Zone 2 applications, install the system in an enclosure rated to at least IP 54
as defined by IEC 60529 and EN 60529.
Special Conditions for Hazardous Locations Use
in Europe
Some chassis have been evaluated as Ex nA IIC T4 equipment under
DEMKO Certificate No. 07 ATEX 0626664X. Each such chassis is marked
II 3G and is suitable for use in Zone 2 hazardous locations, in ambient
temperatures of 0 Ta 55 °C.
Special Conditions for Marine Applications
Some chassis are Lloyd’s Register (LR) Type Approved for marine
applications. To verify Lloyd’s Register certification, visit ni.com/
certification and search for the LR certificate, or look for the Lloyd’s
Register mark on the chassis.
Caution To meet radio frequency emission requirements for marine applications, use
shielded cables and install the system in a metal enclosure. Suppression ferrites must be
installed on power supply inputs to modules. Power supply and module cables must be
separated on opposite sides of the enclosure and must enter and exit through opposing
enclosure walls.

©National Instruments Corporation 3 NI 9157/9159 Operating Instructions and Specifications
What You Need to Install the NI 9157/9159
❑NI 9157/9159 reconfigurable embedded chassis with integrated
MXI-Express (x1)
❑One of the following MXI-Express (x1) host systems
– PXI system with MXI-Express device installed
– PC with MXI-Express PCI or PCIe device installed
– NI Industrial Controller
Note The NI 9157/9159 requires a host system with a PCI Express clock that complies
with the PCI Express Specification. The NI 9157/9159 may not be compatible with
systems using noncompliant clocks, particularly clocks with peak frequencies higher than
100 MHz. For more information about PCI Express clock compatibility with the
NI 9157/9159, go to ni.com/info and enter the Info Code 915xclock.
❑C Series I/O modules
❑MXI-Express (x1) cable(s) up to 7 m long
❑DIN rail mount kit (for DIN rail mounting only)
❑Panel mount kit (for panel mounting only)
❑Three M4 or number 8 panhead screws (for mounting the chassis
without one of the listed mounting kits)
❑Number 2 Phillips screwdriver
❑Power supply
❑MXI-Express (x1) for PXI Express User Manual
Notes Visit ni.com/info and enter the Info Code rdsoftwareversion to determine
which software you need to use the NI 9157/9159.

NI 9157/9159 Operating Instructions and Specifications 4 ni.com
Mounting the NI 9157/9159
You can mount the chassis horizontally either on a 35 mm DIN rail or on a
flat, vertical, metallic surface such as a panel or wall. The maximum
allowable ambient temperature for operation is 55 °C. Mounting the chassis
in a different orientation or on a nonmetallic surface can reduce the
maximum allowable ambient temperature and can affect the typical
accuracy of modules in the chassis. Figure 2 shows the chassis mounted
horizontally.
Figure 2. NI 9157/9159 Mounted Horizontally
Measure the ambient temperature at each side of the chassis, 63.5 mm
(2.5 in.) from the side and 50.8 mm (2 in.) forward from the rear of the
chassis, as shown in Figure 3.
Note For more information about how different mounting configurations can cause
temperature derating, go to ni.com/info and enter the Info Code criomounting.
Note For more information about typical accuracy specifications for modules, go to
ni.com/info and enter the Info Code criotypical.
Caution Your installation must meet the following requirements for space and cabling
clearance:
• Allow 50.8 mm (2 in.) on the top and the bottom of the chassis for air circulation.
• Allow 50.8 mm (2 in.) in front of modules for cabling clearance for common
connectors, such as the 10-terminal, detachable screw terminal connector, as shown
in Figure 3.
Up

©National Instruments Corporation 5 NI 9157/9159 Operating Instructions and Specifications
Figure 3. NI 9157/9159, Bottom View with Dimensions
Figure 4. NI 9157/9159, Front View with Dimensions
1 Measure ambient temperature here.
63.5 mm
(2.50 in.)
50.8 mm
(2 in.) 406.3mm
(16 in.)
50.8 mm
(2 in.)
48.4 mm
(1.91 in.)
1
1
89.4 mm
(3.52 in.)
63.5 mm
(2.50 in.)
29 mm
(1.14 in.)
Cabling Clearance
50.8 mm (2 in.)
51.7 mm
(2.04 in.)
28.0 mm
(1.10 in.)
4.1 mm
(0.16 in.)
Cooling Outline
50.8 mm (2 in.)
87.3mm
(3.44 in.)
Cooling Outline
50.8 mm (2 in.)
36.4 mm
(1.43in.)
132.6 mm
(5.22 in.)
165.1 mm
(6.50 in.)

NI 9157/9159 Operating Instructions and Specifications 6 ni.com
Figure 5. NI 9157/9159, Side View with Dimensions
Mounting the Chassis on a DIN Rail
Use the DIN rail mounting method if you already have a DIN rail
configuration or if you need to be able to remove the chassis quickly.
You can order the NI 9916 DIN rail mount kit if you want to mount the
chassis on a DIN rail. You need one clip for mounting the chassis on a
standard 35 mm DIN rail. Complete the following steps to mount the
chassis on a DIN rail.
1. Fasten the DIN rail clip to the chassis using a number 2 Phillips
screwdriver and three M4 50 screws. National Instruments provides
these screws with the DIN rail mount kit. Tighten the screws to a
maximum torque of 1.3 N m (11.5 lb in.).
18.7 mm
(0.74 in.)
44.1 mm
(1.74 in.)
69.5 mm
(2.74 in.)
51.4 mm
(2.02 in.)
68.2 mm
(2.68 in.)

©National Instruments Corporation 7 NI 9157/9159 Operating Instructions and Specifications
Figure 6. Installing the DIN Rail Clip on the NI 9157/9159
2. Insert one edge of the DIN rail into the deeper opening of the DIN rail
clip, as shown in Figure 7.
Figure 7. One Edge of the DIN Rail Inserted in a Clip
3. Press down firmly on the chassis to compress the spring until the clip
locks in place on the DIN rail.
1 DIN Rail Clip 2 DIN Rail Spring 3 DIN Rail
2
1
3

NI 9157/9159 Operating Instructions and Specifications 8 ni.com
Mounting the Chassis on a Flat Surface
Using the NI 9907 Panel Mount Kit
Panel or wall mounting is the best method for high shock and vibration
applications. You can use the NI 9907 panel mount kit to mount the
NI 9157/9159 on a flat surface. Complete the following steps.
1. Fasten the panel mounting plate to the chassis using a number 2
Phillips screwdriver and six M4 10 screws. National Instruments
provides these screws with the panel mount kit. Tighten the screws to
a maximum torque of 1.3 N m (11.5 lb in.).
Figure 8. Installing the Panel Mounting Plate on the NI 9157/9159

©National Instruments Corporation 9 NI 9157/9159 Operating Instructions and Specifications
Figure 9. Dimensions of NI 9157/9159 with Panel Mounting Plate Installed
2. Fasten the panel mounting plate to the surface using the screwdriver
and screws that are appropriate for the surface. The maximum screw
size is M4 or number 8.
Mounting the Chassis Directly on a Flat Surface
Using the Mounting Holes
Panel or wall mounting is the best method for high shock and vibration
applications. If you do not have the NI 9907 panel mount kit and do not
require the portability that the NI 9907 affords, you can mount the
NI 9157/9159 directly on a flat surface using the three mounting holes.
Complete the following steps.
1. Align the chassis on the surface.
2. Fasten the chassis to the surface using three M4 or number 8 screws.
National Instruments does not provide these screws with the chassis.
Figure 10. Mounting the NI 9157/9159 Directly on a Flat Surface
Caution Make sure that no I/O modules are in the chassis before removing it from the
surface.
25.25 mm
(0.994 in.)
9.53mm
(0.375 in.)
25.70 mm
(1.012 in.)
457.20 mm
(18 in.)
438.15 mm
(17.250 in.)
17.40 mm (0.685 in.)
31.75 mm
(1.250 in.) 63.50 mm
(2.500 in.)
88.14 mm
(3.470 in.)

NI 9157/9159 Operating Instructions and Specifications 10 ni.com
Installing C Series I/O Modules in the Chassis
Figure 11 shows the mechanical dimensions of C Series I/O modules.
Figure 11. C Series I/O Module, Front and Side View with Dimensions
Complete the following steps to install a C Series I/O module in the chassis.
1. Make sure that no I/O-side power is connected to the I/O module. If the
system is in a nonhazardous location, the chassis power can be on
when you install I/O modules.
2. Align the I/O module with an I/O module slot in the chassis as shown
in Figure 12. The module slots are labeled 1 to 14, left to right.
22.9 mm
(0.9 in.)
88.1 mm
(3.47 in.)
70.7 mm
(2.78 in.)

©National Instruments Corporation 11 NI 9157/9159 Operating Instructions and Specifications
Figure 12. Installing an I/O Module in the Chassis
3. Squeeze the latches and insert the I/O module into the module slot.
4. Press firmly on the connector side of the I/O module until the latches
lock the I/O module into place.
5. Repeat these steps to install additional I/O modules.
1 Insertion Groove 2Latch
1
2

NI 9157/9159 Operating Instructions and Specifications 12 ni.com
Removing I/O Modules from the Chassis
Complete the following steps to remove a C Series I/O module from the
chassis.
1. Make sure that no I/O-side power is connected to the I/O module. If the
system is in a nonhazardous location, the chassis power can be on
when you remove I/O modules.
2. Squeeze the latches on both sides of the module and pull the module
out of the chassis.
Wiring Power to the Chassis
The NI 9157/9159 requires an external power supply that meets the
specifications in the Power Requirements section. The NI 9157/9159 filters
and regulates the supplied power and provides power for all of
the I/O modules. You must connect a power supply to at least one pair of
V and C terminals. Optionally, you can connect a second power supply to
the other pair of V and C terminals. The chassis draws power from the
power supply with the higher voltage. The NI 9157/9159 has one layer of
reverse-voltage protection. Complete the following steps to connect a
power supply to the chassis.
1. Connect the positive lead of the power supply to the V1 or V2 terminal
of the COMBICON connector shipped with the NI 9157/9159.
2. Connect the negative lead of the power supply to one of the C terminals
of the COMBICON connector.
3. Optionally you can connect the positive lead of another power supply
to the other V terminal and the negative lead to one of the C terminals.
4. Install the COMBICON connector on the front panel of the
NI 9157/9159.
Note The chassis draws power from either V1 or V2 depending on which terminal has a
higher voltage. It does not draw power from both terminals. The chassis switches between
V1 and V2 without affecting operation.
Note If you prefer for the chassis to draw power from one power supply, you must ensure
that the voltage of that power supply, measured at the chassis power connector, is at least
500 mV higher than the voltage of the other power supply.
Caution The C terminals are internally connected to each other. If you use two power
supplies, make sure that they share a common ground.

©National Instruments Corporation 13 NI 9157/9159 Operating Instructions and Specifications
Caution The C terminals are internally connected to the body of the chassis to prevent a
faulty ground connection from causing the chassis ground to float. If you reverse the input
voltage, the positive input voltage is connected directly to the chassis. The chassis has
built-in reversed-voltage protection, but reversed voltage can damage connected
peripherals if the chassis ground is not reliably connected to earth ground.
Caution Do not tighten or loosen the terminal screws on the power connector while the
power connector is plugged into the chassis or while the power supply is on.
Connecting One or More NI 9157/9159 Chassis
to the MXI-Express Host System
Complete the following steps to connect one or more NI 9157/9159 chassis
to a MXI-Express host system.
1. Make sure the MXI-Express host system is set up and configured as
described in the MXI-Express (x1) for PXI Express User Manual.
2. If the MXI-Express host system is powered up, power it down.
3. If the NI 9157/9159 is powered up, power it down.
4. Use a MXI-Express cable to connect the MXI-Express host system to
the Upstream port of the first NI 9157/9159 in the chain.
5. Use a MXI-Express cable to connect the Downstream port of the first
NI 9157/9159 to the Upstream port of the next NI 9157/9159 in the
chain.
Note The maximum number of NI 9157/9159 chassis in a chain depends on the system
configuration. For example, a PXI system with an NI PXI-8196 controller can support four
chassis per chain. Different types of systems may support more or fewer chassis per chain.
For more information about how different system configurations can affect the maximum
number of chassis in a chain, go to ni.com/info and enter the Info Code 915xchain.
6. Power up all of the connected NI 9157/9159 chassis.
7. Power up the MXI-Express host system.
Caution All connected NI 9157/9159 chassis must have power connected before the host
system is powered up. The BIOS and OS of the host system must detect all bus segments
on the chassis side in order to configure the PCI hierarchy. Powering connected chassis up
or down while the host system is running can cause system hangs and data corruption.
Caution Do not remove MXI-Express cables while power is connected. Doing so can
cause hangs or application errors. If a cable becomes unplugged, plug it back in and reboot.

NI 9157/9159 Operating Instructions and Specifications 14 ni.com
Chassis Powerup Options
Table 1 lists the reset options available for the NI 9157/9159. These options
determine how the chassis behaves when it is powered on in various
conditions. Use the RIO Device Setup utility to select reset options. Access
the RIO Device Setup utility by selecting Start»All Programs»National
Instruments»NI-RIO»RIO Device Setup.
If you want the NI 9157/9159 to autoload and run a VI at powerup, you
must also configure the VI to autoload before you compile it. For more
information about autoloading VIs, refer to LabVIEW FPGA Module Help.
Checking MXI-Express LINK LEDs for Status
After powering on the chassis and host system, check the MXI-Express
LINK LEDs to ensure that all connected systems are linked and
communicating properly. The MXI-Express LINK LEDs of the
NI 9157/9159 indicate the following:
Note For information about PCI Express clock compatibility with the NI 9157/9159,
go to ni.com/info and enter the Info Code 915xclock.
Table 1. Chassis Powerup Options
Powerup Option Behavior
Do Not Autoload VI Does not load the FPGA bit stream from flash memory.
Autoload VI on device powerup Loads the FPGA bit stream from flash memory to the FPGA
when the chassis powers on.
Table 2. NI 9157/9159 MXI-Express LINK LED Indications
LINK LED Appearance Meaning
Off Chassis power is off.
Solid yellow Link is not established.
Solid green Link is established.
Blinking yellow PCI Express clock is incompatible with
NI 9157/9159.

©National Instruments Corporation 15 NI 9157/9159 Operating Instructions and Specifications
Powering Down the MXI-Express System
Always power down the host system before powering down any connected
NI 9157/9159 chassis. When the host system is powered down, the order in
which connected NI 9157/9159 chassis are powered down is not important.
Configuring DIP Switches
Figure 13. DIP Switches
All of the DIP switches are in the OFF position when the chassis is shipped
from National Instruments.
NO FPGA APP Switch
Push the NO FPGA APP switch to the ON position to prevent a LabVIEW
FPGA application from loading at startup. The NO FPGA APP switch
overrides the chassis powerup options described in the Chassis Powerup
Options section. After startup you can download to the FPGA from
software regardless of switch position.
USER FPGA Switches
You can define the USER FPGA switches for your application. Use the
LabVIEW FPGA Module and NI-RIO software to define the USER FPGA
switches to meet the needs of your application. Refer to LabVIEW Help for
information about programming these switches.
NO FPGA APP
USER FPGA1
USER FPGA2
USER FPGA3
OFF

NI 9157/9159 Operating Instructions and Specifications 16 ni.com
Understanding LED Indications
Figure 14. NI 9157/9159 LEDs
POWER LED
The POWER LED is lit while the NI 9157/9159 is powered on. This LED
is a bi-color LED. When the chassis is powered from V1, the POWER LED
is lit green. When the chassis is powered from V2, the POWER LED is lit
yellow.
USER FPGA LEDs
You can use the bi-color, yellow and green USER FPGA LEDs to help
debug your application or easily retrieve application status. Use the
LabVIEW FPGA Module and NI-RIO software to define the USER FPGA
LEDs to meet the needs of your application. Refer to LabVIEW Help for
information about programming these LEDs.
Specifications
The following specifications are typical for the 0 to 55 °C operating
temperature range unless otherwise noted. These specifications are for the
NI 9157/9159 reconfigurable embedded chassis only. For I/O module
specifications, refer to the module operating instructions.
MXI-Express
Maximum cable length ...........................7 m
Reconfigurable FPGA
NI 9157
FPGA type.......................................Virtex-5 LX85
Number of flip-flops........................51,840
Number of 6-input LUTs.................51,840
Number of DSP48 slices
(25 18 multipliers)........................48
Embedded block RAM....................3,456 kbits
P
USER FPGA1
USER FPGA2
USER FPGA3
POWER
USER FPGA1
USER FPGA2
USER FPGA3

©National Instruments Corporation 17 NI 9157/9159 Operating Instructions and Specifications
NI 9159
FPGA type ...................................... Virtex-5 LX110
Number of flip-flops ....................... 69,120
Number of 6-input LUTs ................ 69,120
Number of DSP48 slices
(25 18 multipliers) ....................... 64
Embedded block RAM ................... 4,608 kbits
Timebases............................................... 40, 80, 120, 160, or 200 MHz
Accuracy ......................................... ±100 ppm (max)
Frequency dependent jitter (peak-to-peak)
40 MHz .................................... 250 ps
80 MHz .................................... 422 ps
120 MHz .................................. 422 ps
160 MHz .................................. 402 ps
200 MHz .................................. 402 ps
Power Requirements
Caution You must use the NI 9157/9159 with a 9 to 30 VDC output, UL Listed, limited
power source (LPS) supply. The power supply must bear the UL Listed and LPS marks.
The power supply must also meet any safety and compliance requirements for the country
of use.
Recommended power supply................. 55 W, 30 VDC max
Voltage requirement............................... 9 to 30 V
Chassis power consumption/dissipation
NI 9157
With no I/O modules ............... 14.4 W (max)
With 14 I/O modules ............... 30.7 W (max)
NI 9159
With no I/O modules ............... 16.25 W (max)
With 14 I/O modules ............... 32.7 W (max)
Note The power consumption specifications in this document are maximum values for a
LabVIEW FPGA application compiled at 80 MHz. Your application power requirements
may be different. To calculate the power requirements of the NI 9157/9159, add the power
consumption/dissipation for the chassis and the I/O modules you are using. Keep in mind
that the resulting total power consumption is a maximum value and that the NI 9157/9159
may require less power in your application. For more information about the I/O module
power requirements, refer to the module operating instructions.

NI 9157/9159 Operating Instructions and Specifications 18 ni.com
Physical Characteristics
If you need to clean the chassis, wipe it with a dry towel.
Screw-terminal wiring ............................12–18 AWG copper conductor
wire with 10 mm (0.39 in.) of
insulation stripped from the end
Torque for screw terminals.....................0.5 to 0.6 N · m
(4.4 to 5.3 lb · in.)
Chassis weight ........................................2,231 g (78.7 oz)
Environmental
The NI 9157/9159 is intended for indoor use only.
Operating temperature
(IEC-60068-2-1 and IEC-60068-2-2).....0 °C to 55 °C
Note Refer to the mounting instructions in the Mounting the NI 9157/9159 section of
this document. Failure to follow the mounting instructions in that section can cause
temperature derating. For more information about mounting configurations and
temperature derating, go to ni.com/info and enter the Info Code criomounting.
Storage temperature
(IEC-60068-2-1 and IEC-60068-2-2).....–40 °C to 85 °C
Ingress protection ...................................IP 40
Operating humidity
(IEC-60068-2-56) ...................................10 to 90% RH, noncondensing
Storage humidity
(IEC-60068-2-56) ...................................5 to 95% RH, noncondensing
Maximum altitude...................................2,000 m
Pollution Degree (IEC 60664)................2

©National Instruments Corporation 19 NI 9157/9159 Operating Instructions and Specifications
Shock and Vibration
To meet these specifications, you must panel mount the chassis and affix
ferrules to the ends of the terminal lines.
Operating vibration,
random (IEC 60068-2-64)...................... 5 grms, 10 to 500 Hz
Operating vibration,
sinusoidal (IEC 60068-2-6).................... 5 g, 10 to 500 Hz
Operating shock (IEC 60068-2-27)........ 30 g, 11 ms half sine,
50 g, 3 ms half sine,
18 shocks at 6 orientations
Safety
Safety Voltages
Connect only voltages that are within these limits.
V-to-C .................................................... 30 V max, Measurement
Category I
Measurement Category I is for measurements performed on circuits not
directly connected to the electrical distribution system referred to as
MAINS voltage. MAINS is a hazardous live electrical supply system that
powers equipment. This category is for measurements of voltages from
specially protected secondary circuits. Such voltage measurements include
signal levels, special equipment, limited-energy parts of equipment,
circuits powered by regulated low-voltage sources, and electronics.
Caution Do not connect to signals or use for measurements within Measurement
Categories II, III, or IV.
Electromagnetic Compatibility
This product meets the requirements of the following EMC standards for
electrical equipment for measurement, control, and laboratory use:
• EN 61326 (IEC 61326): Class A emissions; Industrial immunity
• EN 55011 (CISPR 11): Group 1, Class A emissions
• AS/NZS CISPR 11: Group 1, Class A emissions
• FCC 47 CFR Part 15B: Class A emissions
• ICES-001: Class A emissions

NI 9157/9159 Operating Instructions and Specifications 20 ni.com
Note For the standards applied to assess the EMC of this product, refer to the Online
Product Certification section.
Note For EMC compliance, operate this product according to the documentation.
CE Compliance
This product meets the essential requirements of applicable European
Directives as follows:
• 2006/95/EC; Low-Voltage Directive (safety)
• 2004/108/EC; Electromagnetic Compatibility Directive (EMC)
Online Product Certification
Refer to Declaration of Conformity (DoC) for this product for additional
regulatory compliance information. To obtain product certifications and the
DoC for this product, visit ni.com/certification, search by model
number or product line, and click the appropriate link in the Certification
column.
Environmental Management
NI is committed to designing and manufacturing products in an
environmentally responsible manner. NI recognizes that eliminating
certain hazardous substances from our products is beneficial to the
environment and to NI customers.
For additional environmental information, refer to the NI and the
Environment Web page at ni.com/environment. This page contains the
environmental regulations and directives with which NI complies, as well
as other environmental information not included in this document.
Waste Electrical and Electronic Equipment (WEEE)
EU Customers At the end of the product life cycle, all products must be sent to a WEEE
recycling center. For more information about WEEE recycling centers, National
Instruments WEEE initiatives, and compliance with WEEE Directive 2002/96/EC on
Waste Electrical and Electronic Equipment, visit ni.com/environment/weee.
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