OPERATING INSTRUCTIONS AND SPECIFICATIONS
NI 9148
Ethernet Expansion Chassis for C Series Modules
1
NI 9148
POWER
USER FPGA1
STATUS
SAFE MODE
IP RESET
4
V
C
NC
C
3
1LEDs
2 RJ-45 Ethernet Port
INPUT
19-30 V
20 W MAX
3 Power Connector
4 DIP Switches
LINK
10/
100
2
Figure 1. NI 9148 Front Panel
This document describes how to connect the NI 9148 to a network and
how to use the features of the NI 9148. This document also contains
specifications for the NI 9148.
Safety Guidelines
Operate the NI 9148 only as described in these operating instructions.
Special Conditions for Marine Applications
Some chassis are Lloyd’s Register (LR) Type Approved for marine
applications. To verify Lloyd’s Register certification, visit
certification
Lloyd’s Register mark on the chassis.
and search for the LR certificate, or look for the
What You Need to Install the NI 9148 Ethernet
Expansion Chassis
❑ NI 9148 Ethernet expansion chassis
❑ NI-RIO Software DVD
❑ C Series I/O modules
ni.com/
❑ DIN rail mount kit (for DIN rail mounting only)
❑ Two M4 or number 10 panhead screws (for panel mounting only)
❑ A number 2 Phillips screwdriver
❑ Power supply
Notes Visit ni.com/info and enter the Info Code rdsoftwareversion to determine
which software you need to use the NI 9148.
The NI 9148 may be shipped with a clear protective film cover on the front panel. You can
remove the film cover before installing the NI 9148.
Mounting the Chassis
You can mount the chassis in any orientation on a 35 mm DIN rail or on
a panel. Use the DIN rail mounting method if you already have a DIN rail
configuration or if you need to be able to quickly remove the chassis.
Use the panel mount method for high shock and vibration applications.
NI 9148 Operating Instructions and Specifications 2 ni.com
Caution Your installation must meet the following requirements for space and cabling
29 mm
(1.14 in.)
58.9 mm
(2.32 in.)
48.4 mm
(1.91 in.)
3.3 mm
(0.13 in.)
286.4 mm
(11.28 in.)
Cabling Clearance
50.8 mm (2.00 in.)
clearance:
• Allow 25.4 mm (1 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 2.
87.3 mm
(3.44 in.)
Figure 2. NI 9148, Bottom View with Dimensions
165.1 mm
(6.50 in.)
19 mm
(0.75 in.)
NI 9148
POWER
USER FPGA1
STATUS
SAFE MODE
IP RESET
V
INPUT
C
19-30 V
NC
20 W MAX
C
LINK
10/
100
36.4 mm
(1.43 in.)
51.1 mm
(2.04 in.)
3.1 mm
(0.12 in.)
Figure 3. NI 9148, Front View with Dimensions
© National Instruments Corporation 3 NI 9148 Operating Instructions and Specifications
3X M4X0.7
23.7 mm
(0.94 in.)
25 mm
(0.98 in.)
44 mm
(1.73 in.)
63.1 mm
(2.48 in.)
44.1 mm
(1.74 in.)
Figure 4. NI 9148, Side View with Dimensions
The following sections contain instructions for the mounting methods.
Before using any of these mounting methods, record the serial number from
the back of the chassis. You will be unable to read the serial number after
you have mounted the chassis.
Caution Make sure that no I/O modules are in the chassis before mounting it.
Mounting the Chassis on a Panel
You can use the NI 9905 panel mount kit to mount the NI 9148 on a flat
surface. Complete the following steps.
1. Fasten the chassis to the panel mount kit using a number 2 Phillips
screwdriver and two M4 × 16 screws. National Instruments provides
these screws with the panel mount kit. You must use these screws
because they are the correct depth and thread for the panel.
NI 9148 Operating Instructions and Specifications 4 ni.com
2. Fasten the NI 9905 panel to the wall using the screwdriver and screws
31.8 mm
(1.25 in.)
15.5 mm
(0.61 in.)
9.5 mm
(0.38 in.)
28.1 mm
(1.11 in.)
63.5 mm
(2.50 in.)
88.1 mm
(3.47 in.)
311.2 mm
(12.25 in.)
330.2 mm
(13.00 in.)
NI 9148
POWER
USER FPGA1
STATUS
SAFE MODE
IP RESET
INPUT
19-30 V
20 W MAX
LINK
10/
100
V
C
NC
C
Caution Make sure that no I/O modules are in the chassis before removing it from the
panel.
© National Instruments Corporation 5 NI 9148 Operating Instructions and Specifications
Figure 5. Installing the Panel Mount Accessory on the NI 9148
Figure 6. Dimensions of NI 9148 with Panel Mount Accessory Installed
that are appropriate for the wall surface.
Mounting the Chassis on a DIN Rail
You can order the NI 9915 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 two M4 × 16 screws. National Instruments provides
these screws with the DIN rail mount kit.
NI 9148 Operating Instructions and Specifications 6 ni.com
Figure 7. Installing the DIN Rail Clip on the NI 9148
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