National Instruments NI 9469 Manuale utente
GETTING STARTED GUIDE
NI 9469
Synchronization Module
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This document explains how to connect to the NI 9469.
Note Before you begin, complete the software and
hardware installation procedures in your chassis
documentation.
Note The guidelines in this document are specific to
the NI 9469. The other components in the system might
not meet the same safety ratings. Refer to the
documentation for each component in the system to
determine the safety and EMC ratings for the entire
system.
Safety Guidelines
Operate the NI 9469 only as described in this document.
Hot Surface This icon denotes that the component
may be hot. Touching this component may result in
bodily injury.
Caution Do not operate the NI 9469 in a manner not
specified in this document. Product misuse can result in
a hazard. You can compromise the safety protection
built into the product if the product is damaged in any
2| ni.com | NI 9469 Getting Started Guide
way. If the product is damaged, return it to NI for
repair.
Safety Guidelines for Hazardous Locations
The NI 9469 is suitable for use in Class I, Division 2, Groups A,
B, C, D, T4 hazardous locations; Class I, 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 9469 in a potentially explosive environment. Not following
these guidelines may result in serious injury or death.
Caution Do not disconnect I/O-side wires or
connectors unless power has been switched off or the
area is known to be nonhazardous.
Caution Do not remove modules unless power has
been switched off or the area is known to be
nonhazardous.
Caution Substitution of components may impair
suitability for Class I, Division 2.
Caution For Division 2 and Zone 2 applications,
install the system in an enclosure rated to at least IP54
as defined by IEC/EN 60079-15.
NI 9469 Getting Started Guide | © National Instruments | 3
Special Conditions for Hazardous Locations Use in
Europe and Internationally
The NI 9469 has been evaluated as Ex nA IIC T4 Gc equipment
under DEMKO Certificate No. 07 ATEX 0626664X and is
IECEx 14.0089X certified. Each NI 9469 is marked II 3G and
is suitable for use in Zone 2 hazardous locations, in ambient
temperatures of -40 °C ≤ Ta ≤ -70 °C. If you are using the
NI 9469 in Gas Group IIC hazardous locations, you must use the
device in an NI chassis that has been evaluated as Ex nC IIC T4,
Ex IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
Caution You must make sure that transient
disturbances do not exceed 140% of the rated voltage.
Caution The system shall only be used in an area of
not more than Pollution Degree 2, as defined in
IEC 60664-1.
Caution The system shall be mounted in an
ATEX/IECEx-certified enclosure with a minimum
ingress protection rating of at least IP54 as defined in
IEC/EN 60079-15.
4| ni.com | NI 9469 Getting Started Guide
Caution The enclosure must have a door or cover
accessible only by the use of a tool.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory
requirements and limits for electromagnetic compatibility (EMC)
stated in the product specifications. These requirements and
limits provide reasonable protection against harmful interference
when the product is operated in the intended operational
electromagnetic environment.
This product is intended for use in industrial locations. However,
harmful interference may occur in some installations, when the
product is connected to a peripheral device or test object, or if the
product is used in residential or commercial areas. To minimize
interference with radio and television reception and prevent
unacceptable performance degradation, install and use this
product in strict accordance with the instructions in the product
documentation.
Furthermore, any changes or modifications to the product not
expressly approved by National Instruments could void your
authority to operate it under your local regulatory rules.
NI 9469 Getting Started Guide | © National Instruments | 5
Caution To ensure the specified EMC performance,
operate this product only with shielded cables and
accessories.
Special Conditions for Marine Applications
Some products are Lloyd’s Register (LR) Type Approved for
marine (shipboard) applications. To verify Lloyd’s Register
certification for a product, visit ni.com/certification and search
for the LR certificate, or look for the Lloyd’s Register mark on
the product.
Caution In order to meet the EMC requirements for
marine applications, install the product in a shielded
enclosure with shielded and/or filtered power and
input/output ports. In addition, take precautions when
designing, selecting, and installing measurement probes
and cables to ensure that the desired EMC performance
is attained.
6| ni.com | NI 9469 Getting Started Guide
NI 9469 Overview
The NI 9469 is a synchronization module for C Series platforms.
It has a configurable multi-port interface that enables distribution
of triggers and clocks from a host chassis, and an onboard DDS
and PLL for clock generation and synchronization capabilities.
Connecting the NI 9469
The NI 9469 has three RJ45 connectors on the front panel labeled
Port 0, 1, and 2. These connectors use standard straight through
CAT 5e Ethernet cabling to provide connection to other NI 9469
modules only . Each port is software configurable to drive or
receive four differential signals through the cable, which are
referred to as Line 0 to 3. Each port can carry either four triggers,
or three triggers and one clock, in which Line 3 is dedicated to
carry the clock.
NI 9469 Getting Started Guide | © National Instruments | 7
Routing the NI 9469
The NI 9469 features a configurable crosspoint switch. You can
control the routing of signals and the onboard clock generator
between each front port and the trigger lines in the backplane.
However, the crosspoint switch is not a full routing matrix. You
can connect only the same Line or Trig number. For example,
Line 0 to Trig 0, but not Line 0 to Trig 2. However, you can route
clock signals on only Line 3 or Trig 3. The following figure
details the crosspoint switch's routing capabilities.
Note You can set only eight of the 12 total port lines
as outputs due to power constraints.
8| ni.com | NI 9469 Getting Started Guide
Figure 1. Routing Capabilities of the Crosspoint Switch
Line 0
Line 1
Line 2
Line 3
Line 0
Line 1
Line 2
Line 3
Line 0
Line 1
Line 2
Line 3
Trig 0
Trig 1
Trig 2
Trig 3
Line 0
Line 1
Line 2
Line 3
Line 0
Line 1
Line 2
Line 3
Line 0
Line 1
Line 2
Line 3
Trig 0
Trig 1
Trig 2
Trig 3
Clk Gen
Sources
Port 0
Port 1Port 2
Backplane
Onboard
Destinations
Port 0 Port 1 Port 2 Backplane
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
xxx
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x x
x
xx
x
x
x
x
x
x
x x
x
x
x
x
NI 9469 Getting Started Guide | © National Instruments | 9
Note The preceding figure details hardware routing
capability only. Software imposed limitations may
prevent certain routing or input/output functions from
being realized. For more information, refer to the
documentation for your specific software platform.
NI 9469 Application
In a basic application, a single NI 9469 module is inserted into
each host C Series chassis. One module is set as master, the
remainder as slaves, and all modules are connected with a tree
topology. Figure 2 shows a tree topology example. More
advanced and customizable options create a flexible topological
network of NI 9469 modules. Refer to the Topologies section for
examples of various topological networks.
Based on user needs, you may desire certain topologies over
others due to application or timing requirements. Because signals
are physically propagated over cabling, the module cannot
compensate for inherent cable delays and skew. For example, if
all slave modules must receive triggers at the same time with
minimal skew and delay, a star topology with short length-
10 | ni.com | NI 9469 Getting Started Guide
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