NI USB-9263 Manual de usuario

USER GUIDE AND SPECIFICATIONS

NI USB-9263

4-Channel, ±10 V, 16-Bit Analog Voltage Output Module

This user guide describes how to use the National Instruments USB-9263

and lists the device specifications.

Introduction

The NI USB-9263 provides a USB interface for four channels of analog

output with integrated signal conditioning. The NI USB-9263 consists

of two components: an NI 9263 module and an NI USB-9162 carrier, as

shown in Figure 1.

Figure 1. NI USB-9263 Components

NI 9263

NI USB-9162

NI USB-9263

Hi-SPeed USB Carrier

NI USB-9162

Hi-Speed USB Carrier

NI USB-9162

NI USB-9263 User Guide and Specifications 2 ni.com

Dimensions

Figure 2 shows the NI USB-9263 device dimensions.

Figure 2. NI USB-9263 Device in Millimeters (Inches)

Safety Guidelines

Operate the NI USB-9263 only as described in these operating instructions.

Hot Surface This icon denotes that the component may be hot. Touching this component

may result in bodily injury.

Safety Guidelines for Hazardous Voltages

If hazardous voltages are connected to the module, take the following

precautions. A hazardous voltage is a voltage greater than 42.4 Vpk or

60 VDC to earth ground.

Caution Ensure that hazardous voltage wiring is performed only by qualified personnel

adhering to local electrical standards.

Caution Do not mix hazardous voltage circuits and human-accessible circuits on the same

module.

Caution Make sure that devices and circuits connected to the module are properly

insulated from human contact.

25.34

(0.998)

Hi-Speed USB Carrier

NI USB-9162

140.23 mm

(5.521 in.)

137.82 mm

(5.426 in.)

120.68 mm

(4.751 in.)

118.26 mm

(4.656 in.)

88.12 mm

(3.469 in.)

25.34 mm

(0.998 in.)

©National Instruments Corporation 3 NI USB-9263 User Guide and Specifications

Caution When module terminals are hazardous voltage LIVE (>42.4 Vpk/60 VDC),

you must ensure that devices and circuits connected to the module are properly

insulated from human contact. You must use the NI 9932 connector backshell kit,

illustrated in Figure 3, to ensure that the terminals are not accessible. Refer to the Module

Dimensions In Millimeters (Inches) section for more information about the backshell.

Figure 3. NI 9932 Connector Backshell

Information Resources

Refer to ni.com/manuals for the most recent documentation. Refer to

ni.com/info and enter rdusbrd for more information about

documentation related to this device.

Installing the Software

Software support for the NI USB-9263 for Windows Vista/XP/2000 is

provided by NI-DAQmx. The DAQ Getting Started Guide, which you can

download at ni.com/manuals, offers NI-DAQmx users step-by-step

instructions for installing software and hardware, configuring channels and

tasks, and getting started developing an application.

Installing Other Software

If you are using other software, refer to the installation instructions that

accompany your software.

Example Programs

The NI-DAQmx disk contains example programs that you can use to get

started programming with the NI USB-9263. Refer to the NI-DAQmx for

USB Devices Getting Started Guide that shipped with your device, and

is also accessible from Start»All Programs»National Instruments»

NI-DAQ, for more information.

NI USB-9263 User Guide and Specifications 4 ni.com

Mounting the NI USB-9263 to a Panel

Threaded inserts are located in the NI USB-9263 for mounting it to a panel.

Refer to Figure 4 for dimensions.

Figure 4. Module Dimensions In Millimeters (Inches)

Installing the NI USB-9263 Device

Before installing the device, you must install the software you plan to use

with the device. Refer to the Installing the Software section of this guide

and the documentation included with the software for more information.

Installing the NI 9263 Device into the NI USB-9162 Carrier

The NI 9263 module and NI USB-9162 carrier are packaged separately.

Refer to Figure 5 while completing the following assembly steps:

1. Make sure that no signals are connected to the NI 9263 module and the

USB cable is not connected to the device.

2. Remove the protective cover from the 15-pin D-SUB connector.

72.2 mm

(2.84 in.)

85.7 mm

(3.37 in.)

76.1 mm

(3.00 in.)

Threaded Insert

M3 x 0.5

8.5 mm (0.34 in.) Max Depth

©National Instruments Corporation 5 NI USB-9263 User Guide and Specifications

3. Align the I/O module with the carrier, as shown in Figure 5.

Figure 5. Module Installation

4. Squeeze the latches and insert the NI 9263 module into the

NI USB-9162 carrier.

5. Press firmly on the connector side of the NI 9263 module until the

latches lock the module into place, as shown in Figure 6.

Figure 6. Locking Module into Place

Connecting the NI USB-9263 to a Computer

Plug one end of the USB cable into the NI USB-9263 and the other end into

an available USB port on the computer. Refer to the NI-DAQmx for USB

Devices Getting Started Guide that shipped with your device, and is also

accessible from Start»All Programs»National Instruments»NI-DAQ,

for more information.

1 High Voltage Screw Terminal Backshell

NI USB-9263 User Guide and Specifications 6 ni.com

LED Indicator

The NI USB-9263 device has a green LED next to the USB connector. The

LED indicator indicates device status, as listed in Table 1. When the device

is connected to a USB port, the LED blinks steadily to indicate that the

device is initialized and is receiving power from the connection.

If the LED is not blinking, it may mean that the device is not initialized or

the computer is in standby mode. In order for the device to be recognized,

the device must be connected to a computer that has NI-DAQmx installed

on it. If your device is not blinking, make sure your computer has the latest

version of NI-DAQmx installed on it, and the computer is not in standby

mode.

Wiring the NI USB-9263 Device

Caution A high voltage screw terminal backshell must be installed when using hazardous

voltages (>42.4 Vpk, 60 VDC).

Note Table 2 illustrates the accessories available from ni.com for use with the

NI USB-9263.

Table 1. LED State/Device Status

LED State Device Status

Not lit Device not connected or in suspend.

On, not blinking Device connected, but no module installed.

Single-blink Operating normally.

Double-blink Connected to USB Full-Speed port. Device

performance might be affected. Refer to the

Specifications section for more information.

Quadruple-blink Device error. Refer to ni.com/support.

Table 2. Accessories

Accessory Accessory Description

NI 9932 10-position strain relief and

high-voltage connector

NI 9936 10 screw-terminal plugs

©National Instruments Corporation 7 NI USB-9263 User Guide and Specifications

The NI USB-9263 has a 10-terminal, detachable screw-terminal connector

that provides connections for four analog output channels. Each channel

has a terminal to which you can connect the positive lead of a voltage

signal, AO. The NI USB-9263 also has common terminals, COM, that are

internally connected to the isolated ground reference of the module. Refer

to Table 3 for the terminal assignments for each channel.

Wiring for High-Vibration Applications

National Instruments recommends using ferrules for terminating wires to

the detachable screw-terminal connector or using the NI 9932 backshell kit

to protect the connections when you use the NI USB-9263 in high-vibration

applications. Refer to Figure 7 for an illustration.

Figure 7. 10-Pin Detachable Screw-Terminal Connector with a Ferrule

Table 3. Terminal Assignments

Module Terminal Signal

0AO 0

1Common (COM)

2AO 1

3Common (COM)

4AO 2

5Common (COM)

6AO 3

7Common (COM)

8No Connection

9Common (COM)

Ferrule

NI USB-9263 User Guide and Specifications 8 ni.com

Connecting a Load to the NI USB-9263

Connect the positive lead of the load to the AO terminal. Connect the

ground of the load to a COM terminal.

Figure 8. Connecting a Load to the NI USB-9263

NI USB-9263 Circuitry

The NI USB-9263 channels share a common ground that is isolated

from the other modules in the system. Each channel has a digital-to-analog

converter (DAC) that produces a voltage signal. By default, NI-DAQmx

software allows you to write scaled values to the analog output channels.

Refer to your software documentation for more information.

Each channel also has overvoltage and short-circuit protection. For more

information about the overvoltage and short-circuit protection, refer to the

Specifications section.

Figure 9. Output Circuitry for One Channel

When the module powers on, the output channel drives the power-on

voltage. Refer to the Specifications section for more information about

power-on voltage. Refer to your software documentation for information

about configuring initial output values in software.

NI USB-9263

COM

Load

COM

NI USB-9263

Amplifier

Isolated DAC Overvoltage/

Short-Circuit

Protection

©National Instruments Corporation 9 NI USB-9263 User Guide and Specifications

Specifications

The following specifications are typical for the range 0 to 60 °C, unless

otherwise noted. All voltages are relative to COM unless otherwise noted.

Output Characteristics

Number of channels ............................... 4 analog output channels

DAC resolution ...................................... 16 bits

Type of DAC.......................................... String

Startup voltage ....................................... 0 V1

Power-down voltage .............................. 0 V2

Output range........................................... ±10 V

Operating voltage

Nominal .......................................... ±10.7 V

Minimum ........................................ ±10.4 V

Maximum........................................ ±11 V

Current drive .......................................... ±1 mA per channel max

Output impedance .................................. 2 Ω

Accuracy

Stability

Gain drift......................................... 14 ppm/°C

Offset drift....................................... 110 μV/°C

1 When the device powers on, a glitch occurs for 20 μs peaking at –1.5 V.

2 The power-down voltage peaks at 1.8 V before exponentially dishcarging to 0 V in 100 μs. You can add a 10 kΩto reduce the

peak voltage.

Error

Percentage

of Reading

Percent of

Range*

Calibrated, max (–40 to 70 °C) 0.35% 0.75%

Calibrated, typ (25 °C, ±5 °C) 0.03% 0.1%

Uncalibrated, max (–40 to 70 °C) 2.2% 1.7%

Uncalibrated, typ (25 °C, ±5 °C) 0.3% 0.25%

* Range equals ±10.7 V

NI USB-9263 User Guide and Specifications 10 ni.com

Protection

Overvoltage .....................................±30 V

Short-circuit.....................................Indefinitely

Update time1

Noise

Updating at 100 kS/s .......................600 μVrms

Not updating ....................................260 μVrms

Slew rate .................................................4 V/μs

Crosstalk .................................................76 dB

Settling time (100 pF load, to 1 LSB)

Full-scale step..................................20 μs

1 V step............................................13 μs

0.1 V step.........................................10 μs

Capacitive drive ......................................1,500 pF min

Monotonicity ..........................................16 bits

DNL ........................................................±1 LSBs max

INL (endpoint)........................................±12 LSBs max

Power Requirements

Current consumption from USB.............500 mA, max

Suspend mode..................................2.5 mA, max

Bus Interface

USB specification ...................................USB 2.0 Hi-Speed

1 Full performance requires the use of a USB 2.0 Hi-Speed host controller and USB 2.0 hubs.

Number of Channels Update Time

One 3μs min

Two 5μs min

Three 7.5 μs min

Four 9.5 μs min

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