National Instruments BNC-2110 Installation Manual

INSTALLATION GUIDE

BNC-2110

Desktop and DIN Rail-Mountable BNC Adapter
for Multifunction DAQ Devices

This installation guide describes how to install and configure your
BNC-2110 accessory with an E Series, S Series, or NI 671X/673X
waveform generation Multifunction DAQ device.

The BNC-2110 is a desktop and DIN rail-mountable BNC adapter you
can connect to data acquisition (DAQ) devices. The BNC-2110 includes
15 BNC connectors, a terminal block with 30 pins for signal connections,
and a 68-pin I/O connector that connects to the E Series, S Series, and
waveform generation Multifunction DAQ devices. The BNC-2110 is ideal
for simplifying connections between your measurement apparatus and your
DAQ device in laboratory, test, and production environments.

What You Need to Get Started

To set up and use your BNC-2110 accessory, you need the following:

❑ BNC-2110 BNC Adapter

❑ BNC-2110 Installation Guide

❑ Multifunction DAQ device and the appropriate cable

❑ Small flathead screwdriver (supplied)

For detailed specifications for the BNC-2110, refer to the Specifications
section.

Installing Your BNC-2110

To connect your BNC-2110 to your DAQ device, refer to Figure 1 as you
complete the following steps. Consult your computer user manual or
technical reference manual for specific instructions and warnings.

Note If you have not already installed your DAQ device, refer to the DAQ Quick Start

Guide for instructions.

4

3

1 BNC-2110
2 Shielded Cable

Figure 1. Connecting the BNC-2110 to Your DAQ Device

1

3 DAQ Device
4 Personal Computer

2

1. Place the BNC-2110 near the host computer or use the optional DIN
rail-mounting kit, which you can order from National Instruments.
For more information about the DIN rail-mounting kit, refer to the
National Instruments Web site at

ni.com or call the office nearest you.

2. With the DAQ device powered off, connect the BNC-2110 to your
DAQ device using the appropriate cable. Refer to Table 1 to make sure
that you have the proper cable for the DAQ device that you are using.

BNC-2110 Installation Guide 2 ni.com

3. Make sure the floating source (FS)/ground-referenced source (GS)
switches under BNC connectors AI <0..7> are set correctly for your
application. Refer to the Connecting Analog Inputs (E Series and

S Series Devices Only) section for more information.

4. Connect the field signals to the BNC connectors and/or digital spring
terminal plugs. Refer to the Configuring the BNC-2110 section for
more information.

5. Refer to the DAQ Quick Start Guide to launch Measurement &
Automation Explorer (MAX), confirm that your DAQ device is
recognized, and configure your device settings. National Instruments
recommends that you use your DAQ device in differential mode when
using the BNC-2110.

6. Test specific device functionality, such as the ability to send and
receive data. Refer to the DAQ Quick Start Guide for more detailed
information about running test panels in MAX.

When you have finished using the BNC-2110, power off any external
signals connected to the BNC-2110 before you power off your computer.

Caution The BNC-2110 is not designed for input voltages greater than 42 V, even if a

user-installed voltage divider reduces the voltage to within the input range of the DAQ
device. Input voltages greater than 42 V can damage the BNC-2110, any 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 misuse.

Connecting the Cables

Caution Do not connect the BNC-2110 to any device other than National Instruments

E Series, S Series, or waveform generation Multifunction DAQ devices. Doing so can
damage the BNC-2110, the DAQ device, or the host computer. National Instruments is not
liable for damage resulting from these connections.

The BNC-2110 has one 68-pin connector on the rear panel to connect to
your DAQ device. Refer to Table 1 to make this connection.

Table 1. BNC-2110 Connection Options

DAQ Device Required Cable

100-pin SCSI connector SH1006868

68-pin SCSI connector SH6868, SH68-68-EP, or R6868

68-pin DAQCard (VHDCI) connector SHC68-68-EP

© National Instruments Corporation 3 BNC-2110 Installation Guide

.

Configuring the BNC-2110

This section describes how to configure your BNC-2110 accessory.
Figure 2 shows the front panel of the BNC-2110.

Note With NI-DAQmx, National Instruments has revised its terminal names so they are

easier to understand and more consistent among NI hardware and software products.
The revised terminal names used in this document are usually similar to the names they
replace. For a complete list of traditional NI-DAQ terminal names and their NI-DAQmx
equivalents, refer to the Terminal Name Equivalences table in the ESeries Help at

ni.com/manuals.

ANALOG IN ANALOG OUT

Floating

AI 0

Ground Ref.
Source (GS)

AI 1

Source (FS)

2

1

AI 2 . AO 7 AI 3 . AO 6

**

AI 4 . AO 5 AI 5 . AO 4

DIGITAL AND TIMING I/O

PFI 9

PFI 8

PFI 7

PFI 6

PFI 5

PFI 4

PFI 3

PFI 2

PFI 1

D GND

USER 2

F OUT

+ 5V

+ 5V

DGND

CTR1OUT

D GND

USER 1

AI HOLD

EXTSTRB*

AI SENSE

AI GND

3

P0.7

P0.6

P0.5

P0.4

P0.3

P0.2

P0.1

P0.0

4

5

**

AI 6 . AO 3 AI 7 . AO 2 PFI 0 / AI START CTR 0 OUT

**

AO 1 AO 0 USER 1 USER 2

AO EXT REF

*Set to FS
with Analog
Output Boards

1 Floating Source (FS)/Ground-Referenced

Source (GS) Switch

2 BNC Connectors

TRIGGER/COUNTER

USER–DEFINED SIGNALS

AO

D GND

NAME NAME

3 Terminal Block Retaining Screws
4 Terminal Blocks for Digital and Timing I/O
5 Power Indicator Light

3

Figure 2. BNC-2110 Front Panel

BNC-2110 Installation Guide 4 ni.com

The BNC-2110 is compatible with all E Series, S Series, and waveform
generation Multifunction DAQ devices. Some of the connectors on this
accessory may have a different function depending on the device to which
it is connected.

Table 2 describes the BNC connectors on the front panel of the BNC-2110.
Refer to the Connecting Digital/Timing I/O section for terminal block
connector descriptions.

Table 2. BNC-2110 Connector Signal Descriptions

Front Panel BNC Connectors Signal Description

AI <0..1> Differential Analog Input channels 0 and 1

1

AI <2..7>/AO <7..2> Differential Analog Input channels 2 through 72 or

Analog Output channels 7 through 2

3

AO <1..0> Analog Output channels 1 and 0

AO EXT REF External reference input connector for analog output

circuitry

PFI 0/AI START TRIG Programmable Function Input 0/Trigger 1—As an input,

one of the PFIs or the source for the hardware analog
trigger; as an output, the AI start trigger

CTR 0 OUT Counter 0 Output—Output terminal from

General-Purpose Counter 0

USER <1..2> User-defined 1 and 2—Connected to USER 1 and USER 2

digital terminal blocks; allow you to use a BNC connector
for a digital or timing I/O signal of your choice

1

E Series devices only, reserved in waveform generation Multifunction DAQ devices

2

When connected to E Series or S Series Multifunction DAQ devices

3

When connected to waveform generation Multifunction DAQ devices

For more detailed information about how the accessory terminals
correspond one-to-one to the Multifunction DAQ device, refer to the I/O
Connector Pinouts Table in the E Series Help at

ni.com/manuals.

Connecting Analog Inputs (E Series and S Series Devices Only)

The BNC-2110 has BNC connectors for up to eight differential analog
input channels. These connectors are labeled AI <0..7>. The number of
connectors you use depends on your DAQ device and your application.

© National Instruments Corporation 5 BNC-2110 Installation Guide

Measuring Floating Signals

You can use the BNC-2110 to measure floating and ground-referenced
analog input signals. To measure floating signal sources, move the switch
located below the BNC connector for the AI channel you are using to the
floating source switch position (labeled FS). In the floating source switch
position, the amplifier negative terminal connects to ground through a
5kΩ resistor in parallel with a 0.1 µF capacitor. Table 3 shows the
BNC-2110 switch configuration options.

Table 3. Configuration Summary

BNC-2110 Switch

Configuration

Floating Source
(FS)

Ground­Referenced Source
(GS)

Floating Source Ground-Referenced Source

Signal

Source

+
–

Signal

Source

+
–

BNC-2110

Recommended

BNC-2110

Improper Configuration

Signal Source Types for E Series Devices

DAQ Device

(Differential Input

AI GNDAI GND

Mode)

+

–

AI GND

DAQ Device

(Differential Input

Mode)

+

–

AI GND

Signal

Source

+
–

Signal

Source

+
–

BNC-2110

Not Recommended

BNC-2110

Recommended

DAQ Device

(Differential Input

Mode)

+

–

AI GND

DAQ Device

(Differential Input

Mode)

+

–

AI GND

Measuring Ground-Referenced Signals

To measure ground-referenced signals, move the switch to either
the floating or ground-referenced source position. For best results, use the
ground-referenced source position (labeled GS) to avoid ground loops.
Refer to your DAQ device documentation for more information on
measuring floating and ground-referenced signals.

BNC-2110 Installation Guide 6 ni.com

Connecting Analog Outputs

The BNC-2110 has BNC connectors for up to eight analog output channels.
These connectors are labeled AO <0..7>. The number of AO connectors
you use depends on the DAQ device connected to the adapter and your
application. When using connectors AO <7..2>, make sure the switch is
in the FS position.

Connecting Digital/Timing I/O

Use both the Digital and Timing I/O spring terminals and the user-defined
BNC connectors to connect digital signals to your DAQ device. When
connecting signals to the spring terminals, you can use up to 24 AWG wire
with the insulation stripped to 0.28 in. Refer to Table 2 for a description of
the terminal block connectors.

The terminal blocks on the BNC-2110 are spring terminals for easy access.
You can change these blocks to screw terminals by installing the available
screw terminal kit.

Two user-defined BNC connectors, USER 1 and USER 2, are connected to
the terminal blocks on the BNC-2110 front panel. These terminals and their
associated BNC connectors give you the flexibility to choose up to two
additional digital/timing signals. For example, if an application requires
access to AI HOLD COMP and CTR 1 OUT signals, you can wire the
spring terminals labeled AI HOLD COMP and CTR 1 OUT to the spring
terminals labeled USER 1 and USER 2, respectively. This setup configures
BNC connector USER 1 as AI HOLD COMP and USER 2 as CTR 1 OUT.

All of the digital and timing signals from the E Series, S Series, and
waveform generation Multifunction DAQ devices are available on the front
panel of the BNC-2110. Refer to your DAQ device documentation for
information on using these signals.

Table 4 describes the digital terminals on the front panel of the BNC-2110.

Table 4. BNC-2110 Digital Terminal Descriptions

Terminal Description

PFI <1..9> Programmable Function Input lines 1 through 9

D GND Digital Ground—This pin supplies the reference for the

digital signals at the I/O connector as well as the +5 VDC
supply

USER 2 User-defined 2—Connected to USER 2 BNC, this terminal

provides a user-definable BNC terminal

F OUT Frequency Output—Output from the frequency generator

© National Instruments Corporation 7 BNC-2110 Installation Guide

Table 4. BNC-2110 Digital Terminal Descriptions (Continued)

Terminal Description

+5 V +5 V power—These pins are fused on the DAQ device and

are self-resetting; the current available depends on the
product to which it is connected

P0.<7..0> Digital input/output lines 7 through 0—P0.6 and 7 can

control the up/down signal of General-Purpose Counters 0
and 1, respectively

CTR 1 OUT Counter 1 Output—This is the output from

General-Purpose Counter 1

USER 1 User-defined 1—Connected to USER 1 BNC, this terminal

provides a user-definable BNC signal

AI HOLD AI Hold Complete—This pin pulses once for each

A/D conversion when enabled

EXSTRB

*

External Strobe—This signal controls external devices

under control of NI-DAQ

AI SENSE

1

Analog Input Sense—This pin serves as the reference node
for channels AI <0..15> in NRSE configurations

AI GND

2

Analog Input Ground—The analog input voltages are
referenced to this node

* Indicates active low

1

Refer to your DAQ device user manual for more information on using this signal.

2

E Series and S Series devices only

Specifications

This section lists the specifications of the BNC-2110. These specifications
are typical at 25 °C unless otherwise specified.

Physical

Dimensions .............................................19.05 by 10.48 by 3.51 cm

(7.5 by 4.125 by 1.38 in.)

I/O connector ..........................................68-pin male connector

Environment

Operating temperature ............................0 to 70 °C

Storage temperature................................–55 to 125 °C

BNC-2110 Installation Guide 8 ni.com

Relative humidity................................... 5 to 90% noncondensing

Safety

The BNC-2110 meets the requirements of the following standards for
safety and electrical equipment for measurement, control, and laboratory
use:

• IEC 61010-1, EN 61010-1

• UL 3111-1, UL 61010B-1

• CAN/CSA C22.2 No. 1010.1

Note For UL and other safety certifications, refer to the product label or to ni.com.

Electromagnetic Compatibility

Emissions ............................................... EN 55011 Class A at 10 m

Immunity................................................ EN 61326:1997 + A2:2001,

EMC/EMI............................................... CE, C-Tick, and FCC Part 15

FCC Part 15A above 1 GHz

Table 1

(Class A) Compliant

Note For EMC compliance, you must operate this device with shielded cabling.

CE Compliance

This product meets the essential requirements of applicable European
Directives, as amended for CE marking, as follows:

Low-Voltage Directive (safety) ............. 73/23/EEC

Electromagnetic Compatibility

Directive (EMC) .................................... 89/336/EEC

Note Refer to the Declaration of Conformity (DoC) for this product for any additional

regulatory compliance information. To obtain the DoC for this product, click Declarations
of Conformity Information at

product family. Select the appropriate product family, followed by your product, and a link
to the DoC appears in Adobe Acrobat format. Click the Acrobat icon to download or read
the DoC.

© National Instruments Corporation 9 BNC-2110 Installation Guide

ni.com/hardref.nsf/. This Web site lists the DoCs by

DAQCard™, National Instruments™, NI™, ni.com™, and NI-DAQ™ are trademarks of
National Instruments Corporation. Product and company names mentioned herein are trademarks or
trade names of their respective companies. For patents covering National Instruments products, refer
to the appropriate location: Help»Patents in your software, the patents.txt file on your CD, or
ni.com/patents.

© 1998–2003 National Instruments Corp. All rights reserved.

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