National Instruments PXI EXPRESS PXIe-1095 User manual

PXIe-1095 User
Manual
2022-07-06

Contents
PXI Express Chassis Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Getting Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
What You Need to Get Started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Key Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
High Performance for Instrumentation Requirements. . . . . . . . . . . . . . . . . . . . . . 5
High Reliability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Multi-Chassis Support. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Chassis Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Optional Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
EMC Filler Panels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Rack Mount Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Slot Blockers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Replacement Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Replacement Fan Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PXIe-1095 Backplane Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Interoperability with CompactPCI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
System Controller Slot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Hybrid Peripheral Slots. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
PXI Express Peripheral Slots. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
System Timing Slot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
PXI Local Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
PXI Trigger Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
System Reference Clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chassis Cooling Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Providing Adequate Clearance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Chassis Ambient Temperature Definition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Installing Filler Panels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Installing Slot Blockers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Rack Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Connecting the Safety Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Connecting to a Power Source. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
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LED Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Remote Voltage Monitoring and Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
PXI Express System Configuration with MAX. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Using System Configuration and Initialization Files. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Service Interval. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Preparation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Interior Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Exterior Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Replacing the Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Connecting the Safety Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Connecting to a Power Source. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Installing a New Fan Module. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
© National Instruments 3
PXIe-1095 User Manual

PXI Express Chassis Manual
This manual contains the functional overview and specifications for your PXI
Express chassis.
Getting Started
This section describes the key features of the PXIe-1095 chassis and lists the kit
contents and optional equipment you can order from National Instruments.
Unpacking
Carefully inspect the shipping container and the chassis for damage. Check for
visible damage to the metal work. Check to make sure all handles, hardware, and
switches are undamaged. Inspect the inner chassis for any possible damage, debris,
or detached components. If the chassis was damaged during shipment, file a claim
with the carrier. Retain the packing material for possible inspection and/or
reshipment.
What You Need to Get Started
The PXIe-1095 chassis kit contains the following items:
■ PXIe-1095 chassis
■Filler panel
■Soware media with PXI Platform Services 20.5 or newer
■Chassis number labels
Note You also will need an AC power cable, sold separately. Refer to the
following table for more information about AC power cables.
Power Cable Reference Standards
Standard 120 V (USA) ANSI C73.11/NEMA 5-15-P
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Power Cable Reference Standards
Switzerland 220 V SEV 6534-2
Australia 240 V AS C112
Universal Euro 230 V CEE (7), II, IV, VII
United Kingdom 230 V BS 1363
Japan 100 V JIS 8303
Table 1. AC Power Cables
If you are missing any of the items or have the incorrect AC power cable, contact NI.
Key Features
The PXIe-1095 chassis combines a high-performance 9-slot PXI Express backplane
with a high-output power supply and a structural design that has been optimized
for maximum usability in a wide range of applications. The chassis’ modular design
ensures a high level of maintainability, resulting in a very low mean time to repair
(MTTR). The PXIe-1095 chassis fully complies with the PXI-5 PXI Express Hardware
Specification, oering advanced timing and synchronization features.
An optional timing and synchronization upgrade provides inter-chassis trigger
routing capability, higher accuracy CLK10 and CLK100, connectors for 10 MHz
reference clock input and output, and remote chassis monitoring and inhibit
control.
The key features of the PXIe-1095 chassis include the following:
High Performance for Instrumentation Requirements
■ Up to 8 GB/s (single direction) per PXI Express slot dedicated bandwidth (x8
Gen-3 PCI Express).
■58 W per slot cooling from 0 °C to 55 °C, and 82 W per slot cooling from 0 °C
to 40 °C, meets increased PXI Express cooling requirements
■Low-jitter internal 10 MHz reference clock for PXI/PXI Express slots with ± 25
ppm stability
■Low-jitter internal 100 MHz reference clock for PXI Express slots with ± 25
ppm stability
■Quiet operation for 0 to 30 °C at 35.9 dBA
■Variable speed fan controller optimizes cooling and acoustic emissions
© National Instruments 5
PXIe-1095 User Manual

■Complies with PXI and CompactPCI Specifications
High Reliability
■0 to 55 °C extended temperature range
■Power supply, temperature, and fan monitoring
■Field replaceable fans
■Field replaceable power supply
Multi-Chassis Support
■PXI Express System Timing Slot for tight synchronization across multiple
chassis
■Switchless CLK10 routing
Chassis Components
The following figures show key features of the PXIe-1095 chassis front and back
panels.
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Figure 10. Front View of the PXIe-1095
PXIe-1088
LOW POWER
2 3 4
15 6 7 8 9
12
7643
5
8
9
1. System Controller Expansion Slot
2. Backplane Connectors
3. PXI Express Hybrid Peripheral Slots (8x)
4. PXI Express System Controller Slot
5. Dip Switch
6. Power Inhibit Switch
7. Removable Feet
8. Status LED
9. Power Supply Airflow Intake Vents
© National Instruments 7
PXIe-1095 User Manual

Figure 9. Rear View of the PXIe-1095
MODEL:
P/N:
S/N:
1111111
DDMMMYYYY
Prod. of U.S.A.
PART NO. REV:
999
100-240 VAC
50/60 Hz
7-3.5 A
MODEL NO. 1
3
4
21
5
1. Rear Exhaust Vent
2. Universal AC Input
3. Power Supply Fan Exhaust
4. Chassis Protective Earth Terminal
5. Kensington Slot
Optional Equipment
Contact NI to order the following options for the PXIe-1095 chassis.
EMC Filler Panels
EMC filler panel kits are available from NI.
Rack Mount Kits
Rack mounting kits are available from NI that can accommodate a variety of rack
depths.
Slot Blockers
PXI Slot Blocker kits are available from NI for improved thermal performance when
all slots are not used.
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Replacement Power Supply
Replacement power supply kits are available from NI.
Replacement Fan Kit
A fan kit available from NI includes both side and PXI module fan assemblies.
Interoperability with CompactPCI
The design of the PXIe-1095 provides you the flexibility to use the following devices
in a single PXI Express chassis:
■PXI Express compatible products
■CompactPCI Express compatible system controller products
■CompactPCI Express compatible Type-2 peripheral products
■PXI peripheral products modified to fit in a hybrid slot
■Standard CompactPCI peripheral products modified to fit in a hybrid slot
System Controller Slot
The system controller slot is slot 1 of the chassis and is a 2-Link configuration system
slot as defined by the CompactPCI Express and PXI Express specifications. The
chassis includes three system controller expansion slots for system controller
modules that are wider than one slot. These slots allow the system controller to
expand to the le to prevent the system controller from using peripheral slots.
The backplane connects the system slot to a PCI Express switch using a Gen-3 x8 and
a Gen-3 x16 PCI Express link. The PCIe switch is divided into 2 logical PCIe switches
to distribute PCIe connections to the peripheral slots and to 2 PCIe-to-PCI bridges to
provide PCI busses to the hybrid peripheral slots.
System slot link 1 is a Gen-3 x8 PCI Express link to the primary PCI Express switch,
providing a nominal bandwidth of 8 GB/s (single direction) between the system
controller and logical PCI Express switch 1. PXI Express peripheral slots 2-4 are
connected to logical PCI Express switch 1 with Gen-3 x8 PCI Express links and are
downstream of system slot link 1.
© National Instruments 9
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System slot link 2 is a Gen-3 x16 PCI Express link to the primary PCI Express switch,
providing a nominal bandwidth of 16 GB/s (single direction) between the system
controller slot and logical PCI Express switch 2. PXI Express peripheral slots 5-9 are
connected to logical PCI Express switch 2 with Gen-3 x8 PCI Express links and are
downstream of system slot link 2.
The PCI Express-to-PCI bridges are connected to PCI Express switch 2 and provide a
32-bit, 33 MHz PCI bus for hybrid peripheral slots 2, 3, 4, 5, 7, 8, and 9.
The system controller slot also has connectivity to some PXI features such as:
PXI_CLK10, PXI Star, PXI Trigger Bus, and PXI Local Bus 6. By default, the system
controller controls the power supply with the PS_ON# signals. A logic low on this
line powers on the power supply.
Note The chassis Inhibit Mode must be set to Default mode for the system
controller to control the power supply. Refer to the Inhibit Mode section
for details about configuring Inhibit Mode.
Hybrid Peripheral Slots
The chassis provides seven (7) hybrid peripheral slots as defined by the PXI-5 PXI
Express Hardware Specification: slots 2, 3, 4, 5, 7, 8, and 9. A hybrid peripheral slot
can accept the following peripheral modules:
■A PXI Express peripheral with x8, x4, or x1 PCI Express link through a switch
to the system slot. Each PXI Express peripheral slot can link up to a Gen-3 x8
PCI Express, providing a maximum nominal single-direction bandwidth of 8
GB/s.
■A CompactPCI Express Type-2 Peripheral with x8, x4, or x1 PCI Express link
through a PCI Express switch to the system slot.
■A hybrid-compatible PXI Peripheral module modified by replacing the J2
connector with an XJ4 connector installed in the upper eight rows of J2. Refer
to the PXI Express Specification for details. The PXI peripheral communicates
through the backplane’s 32-bit PCI bus.
■A CompactPCI 32-bit peripheral on the backplane’s 32-bit PCI bus.
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The hybrid peripheral slots provide full PXI Express functionality and 32-bit PXI
functionality except for PXI Local Bus. The hybrid peripheral slot only connects to
PXI Local Bus 6 le and right.
Figure 3. PXIe-1095 PCI Express Backplane Diagram
3
H
2
H
4
H
5
H
7
H
8
H
9
H
1
Station 0
Station 1
Station 3
Virtual
Switch 0
Secondary
PCIe Switch
Primary
PCIe Switch
Expansion Slot
Virtual
Switch 1
Station 2
Station 4 Station 5
Port 0 Port 1 Port 8
Port 16 Port 17 Port 20 Port 21
Port 5 Port 4
Port 12 Port 13 Port 14
32-bit, 33 MHz PCI 32-bit, 33 MHz PCI
6
Port 1 Port 4
Port 0
Port 5
PCI
Bridge #2
Gen3 x16
Gen3 x8
Gen3 x8
Gen3 x8
Gen3 x8
Gen3 x8
Gen3 x8
Gen3 x8
Gen3 x8
Gen3 x8
Gen2 x1
PCI
Bridge #1
Gen1 x1 PCI Gen1 x1 PCI
PXI Express Peripheral Slots
There are eleven (11) PXI Express peripheral slots: slots 2 to 6 and 13 to 18. PXI
Express peripheral slots can accept the following modules:
■A PXI Express Peripheral with x8, x4, or x1 PCI Express link to the system slot
or through a PCI Express switch.
■A CompactPCI Express Type-2 Peripheral with x8, x4, or x1 PCI Express link
to the system slot or through a PCI Express switch.
System Timing Slot
The system timing slot is slot 6. The system timing slot accepts the following
peripheral modules:
■A PXI Express System Timing Module with x8, x4, or x1 PCI Express link to the
system slot through a PCI Express switch. Each PXI Express peripheral or
© National Instruments 11
PXIe-1095 User Manual

hybrid peripheral slot can link up to a Gen-3 x8 PCI Express, providing a
maximum nominal single-direction bandwidth of 8 GB/s.
■A PXI Express Peripheral with x8, x4, or x1 PCI Express link to the system slot
through a PCI Express switch.
■A CompactPCI Express Type-2 Peripheral with x8, x4, or x1 PCI Express link
to the system slot through a PCI Express switch.
The system timing slot has three (3) dedicated dierential pairs (PXIe_DSTAR)
connected from the TP1 and TP2 connectors to the XP3 connector for each PXI
Express hybrid peripheral slot, as well as routed back to the XP3 connector of the
system timing slot, as shown in the following figure. You can use the PXIe_DSTAR
pairs for high-speed triggering, synchronization, and clocking. Refer to the PXI
Express Specification for details.
The system timing slot also has a single-ended (PXI Star) trigger connected to every
slot. Refer to the following figure for more details.
The system timing slot has a pin (PXI_CLK10_IN) through which a system timing
module may source a 10 MHz clock to which the backplane phase-locks.
Figure 4. PXIe_DSTAR and PXI Star Connectivity Diagram
3
H
2
H
4
H
5
H
67
H
8
H H
9
DSTAR 14 STAR 14
DSTAR 2 STAR 2 DSTAR 0 STAR 0
DSTAR 10
STAR 3
1
DSTAR 8 STAR 8 DSTAR 11
STAR 11 DSTAR 12 STAR 12
DSTAR 15 STAR 15
Expansion Slot
PXI Local Bus
The PXI backplane local bus is a daisy-chained bus that connects each peripheral
slot with adjacent peripheral slots to the le and right.
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The backplane routes PXI Local Bus 6 between all slots. The le local bus 6 from slot
1 is not routed anywhere, and the right local bus 6 from slot 9 is not routed
anywhere.
Local bus signals may range from high-speed TTL signals to analog signals as high
as 42 V.
Initialization soware uses the configuration information specific to each adjacent
peripheral module to evaluate local bus compatibility.
PXI Trigger Bus
All slots on the same PXI bus segment share eight PXI trigger lines. You can use these
trigger lines in a variety of ways. For example, you can use triggers to synchronize
the operation of several dierent PXI peripheral modules. In other applications, one
module located in the system timing slot can control carefully timed sequences of
operations performed on other modules in the system. Modules can pass triggers to
one another on the lines, allowing precisely timed responses to asynchronous
external events the system is monitoring or controlling.
The PXI trigger lines from adjacent PXI trigger bus segments can be routed in either
direction across the PXI trigger bridges through buers. This allows you to send
trigger signals to, and receive trigger signals from, every slot in the chassis. Static
trigger routing (user-specified line and directional assignments) can be configured
through Measurement & Automation Explorer (MAX). Dynamic routing of triggers
(automatic line assignments) is supported through certain NI drivers like NI-DAQmx.
Note Although any trigger line may be routed in either direction, it cannot
be routed in more than one direction at a time.
With the Timing and Synchronization upgrade, PXI trigger lines can also be routed to
I/O ports on the rear of the chassis. This allows you to send trigger signals to, and
receive trigger signals from, devices in other chassis. NI drivers such as NI-DAQmx
must be used to route triggers between chassis dynamically; routing triggers
between chassis using static routes defined in MAX is not supported.
© National Instruments 13
PXIe-1095 User Manual

Figure 5. PXI Trigger Bus Connectivity Diagram
Expansion Slot
H H H
7 8 9
H H H H
12 3 4 5 6
PXI
Trigger
Bridge#1
PXI
Trigger
Bridge#2
PXI Trigger Bus #1 PXI Trigger Bus #2
PXI
Trigger
Bridge#3
PFI/Inhibit/
Voltage Mon
Trig/10 MHz
Port 0
Trig/10 MHz
Port 1
PFI [0:3] Trig [0:7] Trig [0:7]
PXI Trigger Bus #3
Note Dotted line connections are available only with the Timing and
Synchronization upgrade.
System Reference Clock
The PXIe-1095 chassis supplies PXI_CLK10, PXIe_CLK100 and PXIe_SYNC100 to every
peripheral slot with an independent driver for each signal. The following figure
shows the chassis reference clock architecture.
Figure 6. Chassis Reference Clock Architecture
VCXO
DAC
OCXO
Calibration
DAC
10 MHz
OCXO
PLL
100 MHz
VCXO
CLK100
Fanout
Buffer
to PXIe
Slots
Rear-Panel
10 MHz REF IN
Trig Port 0
10 MHz REF IN
System Timing Slot
CLK10 IN
CLK10
Fanout
Buffer
to PXIe
Slots
SYNC100
Fanout
Buffer
SYNC100
CLK10,
Synthesis
to PXIe
Slots
Trig Port 1 10 MHz REF OUT
Rear-Panel 10 MHz REF OUT
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Note Dotted line connections are available only with the Timing and
Synchronization upgrade.
An independent buer (having a source impedance matched to the backplane and a
skew of less than 250 ps between slots) drives PXI_CLK10 to each slot. You can use
this common reference clock signal to synchronize multiple modules in a
measurement or control system.
An independent buer drives PXIe_CLK100 to each peripheral slot. These clocks are
matched in skew to less than 100 ps. The dierential pair must be terminated on the
peripheral with LVPECL termination for the buer to drive PXIe_CLK100 so that
when there is no peripheral or a peripheral that does not connect to PXIe_CLK100,
there is no clock being driven on the pair to that slot. Refer to the following figure for
a termination example.
An independent buer drives PXIe_SYNC100 to each peripheral slot. The dierential
pair must be terminated on the peripheral with LVPECL termination for the buer to
drive PXIe_SYNC100 so that when there is no peripheral or a peripheral that does
not connect to PXIe_SYNC100, there is no SYNC100 signal being driven on the pair to
that slot.
In summary, PXI_CLK10 is driven to every slot. PXIe_CLK100 and PXIe_SYNC100 are
driven to every peripheral slot.
PXI_CLK10, PXIe_CLK100 and PXIe_SYNC100 have the default timing relationship
described in the following figure.
Figure 7. System Reference Clock Default Behavior
PXIe_CLK100
PXI_CLK10
PXIe_SYNC100
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
To synchronize the system to an external clock, you can drive PXI_CLK10 from an
external source through the PXI_CLK10_IN pin on the System Timing Slot, or from an
external SMA connector on the rear of the chassis (Timing and Synchronization
upgrade). When an external clock is detected, the backplane automatically phase-
locks the PXI_CLK10, PXIe_CLK100, and PXIe_SYNC100 signals to this external clock
and distributes these signals to the slots. Refer to the PXIe-1095 Specifications
© National Instruments 15
PXIe-1095 User Manual

section for the specification information for an external clock provided on the
PXI_CLK10_IN pin of the System Timing Slot or rear panel SMA.
Safety Information
Caution Before undertaking any troubleshooting, maintenance, or
exploratory procedure, carefully read the following caution notices.
Caution Protection may be impaired if equipment is not used in the
manner specified.
This equipment contains voltage hazardous to human life and safety, and is capable
of inflicting personal injury.
■Protective Earth—The facility installation must provide a means for
connection to protective earth.
■Protective Earth Terminal Wiring—Qualified personnel must install a
protective earthing conductor from the chassis protective earth terminal
(using an #8-32 SEMS screw) on the rear to the protective earth wire in the
facility.
Grounding wire 2.1 mm2 (14 AWG)
Ring lug #8
Protective earth terminal torque 1.13 N · m (10 lb · in.)
■Chassis Grounding—The chassis requires a connection from the premise
wire safety ground to the chassis ground. The earth safety ground must be
connected during use of this equipment to minimize shock hazards. Refer to
the Connecting Safety Ground section for instructions on connecting safety
ground.
■Live Circuits—Operating personnel and service personnel must not remove
protective covers when operating or servicing the chassis. Adjustments and
service to internal components must be undertaken by qualified service
technicians. During service of this product, the mains connector to the
premise wiring must be disconnected. Dangerous voltages may be present
under certain conditions; use extreme caution.
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■Explosive Atmosphere—Do not operate the chassis in conditions where
flammable gases are present. Under such conditions, this equipment is unsafe
and may ignite the gases or gas fumes.
■Part Replacement—Only service this equipment with parts that are exact
replacements, both electrically and mechanically. Contact NI for replacement
part information. Installation of parts with those that are not direct
replacements may cause harm to personnel operating the chassis.
Furthermore, damage or fire may occur if replacement parts are unsuitable.
■Modification—Do not modify any part of the chassis from its original
condition. Unsuitable modifications may result in safety hazards.
Chassis Cooling Considerations
The PXIe-1095 chassis is designed to operate on a bench or in an instrument rack.
You must adhere to the cooling clearances as outlined in the following section.
Providing Adequate Clearance
The module and power supply exhaust vents for the PXIe-1095 are on the top of the
chassis. The module intake vents are on the rear of the chassis. There are also intake
and exhaust vents located along the sides of the chassis.
Adequate clearance between the chassis and surrounding equipment, heat
generating devices, and air flow blockages must be maintained to ensure proper
cooling. Minimum cooling clearances are shown in the following figure. For rack
mount applications adequate forced air ventilation is required. For benchtop
applications additional cooling clearances may be required for optimal air flow and
reduced hot air recirculation to the air inlet fans.
© National Instruments 17
PXIe-1095 User Manual

Figure 8. PXIe-1095 Cooling Clearances
44.45 mm
(1.75 in.)
44.45 mm
(1.75 in.)
PS FANSTEMP FANS FANS
PXIe-1092
Peripheral
Expansion Slot
Provides Power
For Multi-Slot
Modules, Refer
To User Manual
For Details
4H5H 3H 2H
16H7H8H9H
101.60 mm
(4.00 in.)
USE ONLY COMPATIBLE RACK MOUNT KITS.
COOLING CLEARANCE REQUIRED. SEE MANUAL.
Caution Failure to provide these clearances may result in undesired
thermal-related issues with the chassis or modules.
To aid in thermal health monitoring for either rack or benchtop use you can monitor
the chassis intake temperatures in Measurement & Automation Explorer (MAX) to
ensure the temperatures do not exceed the ratings in the Operating Environment
section of the PXIe-1095 Specifications.
Additionally, many PXI modules provide temperature values you can monitor to
ensure critical temperatures are not exceeded. Increasing chassis clearances,
ventilation, reducing external ambient temperatures, and removing nearby heat
sources are all options for improving overall chassis thermal performance.
The vent locations are shown in the following figure.
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Figure 9. PXIe-1095 Vents
PXIe-1092
3
4
5
7
6
2
DISCONNECT POWER CORD BEFORE SERVICING.
1
1. PXI Module Air Intake (2x)
2. Power Supply Intake
3. PXI Module Air Exhaust Vent
4. Power Supply Air Exhaust Vent
5. Timing and Synchronization Upgrade Air Exhaust Vent
6. Timing and Synchronization Upgrade Air Intake
7. Side Air Intake Vent (Right)/Side Air Exhaust Vent (Le)
Note The side exhaust vent (not shown) is located on the le side of the
chassis.
© National Instruments 19
PXIe-1095 User Manual

Chassis Ambient Temperature Definition
The chassis fan control system uses ambient intake air temperatures for controlling
fan speeds when in Auto mode. These temperatures may be higher than ambient
room temperature depending on surrounding equipment and/or airflow blockages.
Ensure ambient intake temperatures do not exceed the ratings in the Operating
Environment section of the PXIe-1095 Specifications. You can monitor the module
ambient intake temperatures in NI Measurement & Automation Explorer (MAX).
Installing Filler Panels
To maintain proper module cooling performance, install filler panels (one is
provided with the chassis) in unused or empty slots. Secure with the captive
mounting screws provided.
Installing Slot Blockers
You can improve the cooling performance of the chassis by installing optional slot
blockers. Refer to the NI website at ni.com/info and enter the Info Code slotblocker
for more information about slot blockers.
Rack Mounting
Rack mount applications require optional rack mount kits available from NI. Refer to
the instructions supplied with the rack mount kits to install your PXIe-1095 chassis
in an instrument rack.
Note You must remove the feet and carry handle from the PXIe-1095
chassis when rack mounting.
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