INSTALLATION GUIDE
NI TB-2709
PXI Terminal Block for S Series Devices
This installation guide describes how to install and connect signals to the
NI TB-2709 terminal block for use with PXI-6123/6133 S Series devices.
The TB-2709 can also be used with the PXI-6122/6132 devices to access
the first four AI channels.
Introduction
The TB-2709 is a terminal block assembly consisting of nine SMB
connectors and a 14-pin I/O connector. The terminal block assembly
connects directly to the front panel of National Instruments PXI-6122,
PXI-6123, PXI-6132, and PXI-6133 devices, eliminating the need for an
external cable.
1
2
1 Access Door to Configuration Switches
2 14-Pin I/O Connector (Digital Signals)
Figure 1. TB-2709 Device View
I
AI 0
AI 1
AI 2
AI 3
AI 4
AI 5
AI 6
AI 7
AI
ART
ST
TRIG
3
3 SMB Connectors (Analog Signals)
The nine SMB connectors on the TB-2709 allow you to easily connect
analog input signals to your National Instruments device. The 14-pin I/O
connector located on the bottom of the TB-2709 allows access to digital
signals.
Caution The TB-2709 is not designed for input voltages greater than 42 V
even if you install a voltage divider that reduces the voltage to within the input range of the
DAQ device. Input voltages greater than 42 V
device connected to it, and the host computer. Overvoltage also can cause an electric shock
hazard for the operator. National Instruments is not liable for damage or injury resulting
from such misuse.
What You Need to Get Started
You need the following to set up and use your terminal block:
❑ NI TB-2709 Terminal Block Assembly
❑ NI TB-2709 Installation Guide
❑ One of the following:
– NI PXI-6122
– NI PXI-6123
– NI PXI-6132
– NI PXI-6133
❑ S Series User Manual
/60 VDC,
pk
/60 VDC can damage the TB-2709, any
pk
❑ Number 1 Phillips screwdriver
Safety Information
Cautions Do not operate the device in an explosive atmosphere or where there may be
flammable gases or fumes.
Do not operate damaged equipment. The safety protection features built into this device
can become impaired if the device becomes damaged in any way. If the device is damaged,
turn the device off and do not use it until service-trained personnel can check its safety.
If necessary, return the device to National Instruments for service and repair to ensure that
its safety is not compromised.
Do not operate this equipment in a manner that contradicts the information specified in this
document. Misuse of this equipment could result in a shock hazard.
NI TB-2709 Installation Guide 2 ni.com
Do not substitute parts or modify equipment. Because of the danger of introducing
additional hazards, do not install unauthorized parts or modify the device. Return the
device to National Instruments for service and repair to ensure that its safety features
are not compromised.
Yo u must insulate all of your signal connections to the highest voltage with which the
TB-2709 can come in contact.
Connections, including power signals to ground and vice versa, that exceed any of the
maximum signal ratings on the terminal block can create a shock or fire hazard, or can
damage any or all of the boards connected to the host computer and the terminal block.
National Instruments is not liable for any damages or injuries resulting from incorrect
signal connections.
Clean the module and accessories by brushing off light dust with a soft non-metallic brush.
Remove other contaminants with a stiff non-metallic brush. The unit must be completely
dry and free from contaminants before returning it to service.
Installation
The TB-2709 connects directly to the front panel of the PXI DAQ device,
as shown in Figure 2.
2
3
1
1 Terminal Block Mounting Screws
2 PXI Chassis
Figure 2. Connecting the TB-2709 to an S Series Device
© National Instruments Corporation 3 NI TB-2709 Installation Guide
3 68-Pin I/O Connector on PXI Device
To connect the terminal block to the PXI module I/O connector, refer to
Figure 2 as you complete the following steps:
1. Install the PXI module into the chassis and tighten the two module
screws. You must install the PXI device before connecting the
TB-2709. Refer to the DAQ Getting Started Guide for instructions on
installing your PXI device.
2. Guide the terminal block onto the PXI module connector.
Caution Do not force the terminal block when inserting it into or removing it from the PXI
module I/O connector.
3. Tighten the two terminal block mounting screws.
Signal Descriptions
Figure 3 shows the front panel of the TB-2709, and Figure 4 shows the
TB-2709 block diagram. Refer to Table 1 for a brief description of each
signal available on the TB-2709.
Figure 3. NI TB-2709 Front Panel
NI TB-2709 Installation Guide 4 ni.com
Front Panel
SMB Connectors
5 kΩ
0.1 μF
Figure 4. NI TB-2709 Block Diagram
Table 1. TB-2709 Signal Descriptions
DAQ Device
Signals
AI <0..7> +
AI <0..7> –
AI <0..7> GND
AI Start Trig
D GND
Signal Name Reference Direction Description
AI <0..7> AI GND Input Analog Input channels 0 through 7.
PFI 0/AI Start Trig D GND Input As an input, this pin is a programmable
function input (PFI).
Output As an output, this pin is the AI Start
Trigger signal.
For more detailed descriptions of these signals, refer to the S Series User
Manual.
Additional signal configuration information is available in Measurement &
Automation Explorer (MAX). To access this information in MAX, select
your device under Devices and Interfaces, and click the Device Routes
tab.
Measuring Floating Signals
You can use the TB-2709 to measure floating and ground-referenced
analog input signals. To measure floating signal sources, move the switch
located under the rubber-sealed door on the enclosure cover for the AI
channel you are using to the ON (floating source) switch position. In the
floating source switch position, the amplifier negative terminal connects to
ground through a 5 kΩ resistor in parallel with a 0.1
shows the TB-2709 switch configuration options.
© National Instruments Corporation 5 NI TB-2709 Installation Guide
μF capacitor. Table 2
Table 2. Configuration Summary
TB-2709 Switch
Configuration
Floating Source
GroundReferenced Source
Floating Source Ground-Referenced Source
Signal
Source
+
–
Signal
Source
+
–
TB-2709
Recommended
TB-2709
Improper Configuration
Signal Source Types for S Series Devices
DAQ Device
(Differential Input
Mode)
+
–
AI GND
DAQ Device
(Differential Input
Mode)
+
–
AI GND
Signal
Source
+
–
Signal
Source
+
–
TB-2709
Not Recommended
TB-2709
Recommended
DAQ Device
(Differential Input
Mode)
+
–
AI GND
DAQ Device
(Differential Input
Mode)
+
–
AI GND
Measuring Ground-Referenced Signals
It is possible to set the switch on the TB-2709 to either the floating or
ground-referenced source position to measure ground-referenced signals.
However, for best results, use the OFF (ground-referenced source) switch
position to avoid ground loops. Refer to the S Series User Manual for more
information on measuring floating and ground-referenced signals.
Cabling Options
This section describes the cabling options for accessing digital signals on
the TB-2709.
A 14-pin connector on the bottom of the TB-2709 provides access to
digital I/O signals. Use the MFIT-Pigtail Cable Assembly (part number
194123-01) to access digital signals on the TB-2709. The MFIT-Pigtail
Cable Assembly features a 14-pin I/O connector on one end and pigtail
NI TB-2709 Installation Guide 6 ni.com
Pin 7
Pin 1
conductors on the other end. The pigtail conductors on the cable assembly
can be used to terminate digital signals to the connector(s) your application
requires. Figure 5 and Table 3 list the pin assignments and wiring
information necessary for connecting the TB-2709 to DIO signals.
14
Pin 14
Pin 8
GND
CTR 0 OUT
P0.3
P0.2
P0.1
P0.0
GND
7
6
5
4
3
2
1
13
12
11
10
9
8
PFI 9
CTR 1 OUT
CHASSIS GND
P0.7
P0.6
P0.5
P0.4
Figure 5. 14-Pin Digital I/O Connector
Table 3. TB-2709 Wiring Information for 14-Pos MFIT-Pigtail
Cable Assembly (Part Number 194123-01)
Pin Number Wire Color Signal Name
1 Black D GND
1 Brown D GND
2 Red P0.0
3 Orange P0.1
4 Yellow P0.2
5 Green P0.3
6 Blue CTR 0 OUT
7 Viole t D GND
7 Gray D GND
8 White P0.4
© National Instruments Corporation 7 NI TB-2709 Installation Guide
Table 3. TB-2709 Wiring Information for 14-Pos MFIT-Pigtail
Cable Assembly (Part Number 194123-01) (Continued)
Pin Number Wire Color Signal Name
9 White/Black P0.5
10 White/Brown P0.6
11 White/Red P0.7
12 Drain Wire CHASSIS GND
13 White/Orange CTR 1 OUT
14 White/Yellow PFI 9
Table 4 lists the National Instruments cables available for connecting the
TB-2709 to both analog and digital user signals.
Table 4. TB-2709 Cabling Options
Cable Length Part Number
Specifications
Input/Output
Caution Do not apply an input voltage greater than 42 V
voltages greater than 42 V
to it, including the host computer. Overvoltage can also cause an electric shock hazard for
the operator. National Instruments is not liable for damage or injury resulting from such
misuse.
SMB-100, SMB Female to BNC
Female Coaxial, 50 Ω
SMB110, SMB to BNC Male
Coaxial, 50 Ω
14-Pos MFIT-Pigtail Cable
Assembly
This section lists the specifications of the TB-2709. These specifications
are typical at 25 °C unless otherwise specified.
Refer to the documentation for your PXI-6123/6133 or PXI-6122/6132
S Series device to determine the input/output specifications for your
application.
/60 VDC can damage the TB-2709 and any device connected
pk
0.6 m 763389-01
1 m 763405-01
1 m 194123-01
/60 VDC to the TB-2709. Input
pk
NI TB-2709 Installation Guide 8 ni.com
Physical
Shock and Vibration
Dimensions
Height.............................................. 10.7 × 8.6 × 2.0 cm
(4.2 × 3.4 × 0.8 in.)
Weight.............................................144.6 g (5.1 oz)
I/O connectors
68-position SCSI-II type................. 1, female
SMB jacks....................................... 9
14-pin auxiliary connector.............. One, Molex 14-pin microfit
connector
Operational shock .................................. 30 g peak, half-sine, 11 ms pulse
(Tested in accordance with
IEC-60068-2-27. Test profile
developed in accordance with
MIL-PRF-28800F.)
Random vibration
Operating ........................................ 5 to 500 Hz, 0.3 g
Nonoperating .................................. 5 to 500 Hz, 2.4 g
(Tested in accordance with
IEC-60068-2-64. Nonoperating
test profile exceeds the
requirements of
MIL-PRF-28800F, Class 3.)
rms
rms
Environment
The NI TB-2709 is intended for indoor use only.
Operating temperature............................ 0 to 55 °C
Storage temperature ............................... –20 to 70 °C
Relative humidity................................... 10 to 90% noncondensing
Pollution Degree .................................... 2
© National Instruments Corporation 9 NI TB-2709 Installation Guide
Safety
This product is designed to meet the requirements of the following
standards of safety for electrical equipment for measurement, control,
and laboratory use:
• IEC 61010-1, EN 61010-1
• UL 61010-1, CSA 61010-1
Note For UL and other safety certifications, refer to the product label, or visit ni.com/
certification
in the Certification column.
, search by model number or product line, and click the appropriate link
Waste Electrical and Electronic Equipment (WEEE)
EU Customers At the end of their life cycle, all products must be sent to a WEEE recycling
center. For more information about WEEE recycling centers and National Instruments
WEEE initiatives, visit
ni.com/environment/weee.htm.
Where to Go for Support
The National Instruments Web site is your complete resource for technical
support. At
troubleshooting and application development self-help resources to email
and phone assistance from NI Application Engineers.
ni.com/support you have access to everything from
A Declaration of Conformity (DoC) is our claim of compliance with the
Council of the European Communities using the manufacturer’s
declaration of conformity. This system affords the user protection for
electronic compatibility (EMC) and product safety. You can obtain the DoC
for your product by visiting
supports calibration, you can obtain the calibration certificate for your
product at
National Instruments corporate headquarters is located at
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National Instruments also has offices located around the world to help
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© National Instruments Corporation 11 NI TB-2709 Installation Guide
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