12-bit and 14-bit Multifunction Devices with 8 Analog Inputs, 2

12-bit and 14-bit Multifunction Devices with 8 Analog Inputs, 2
USB-1208FS/LS/1408FS Series
12-bit and 14-bit Multifunction Devices with 8 Analog Inputs,
2 Analog Outputs
Features
• Low cost, multifunction USB devices
with 4 differential or 8 single-ended
analog inputs (software‑selectable)
• Provides 12-bit or 14-bit
analog input resolution
• Maximum sampling rates ranging
from 1.2 kS/s to 50 kS/s
• 2 analog outputs
• 16 digital I/O lines
• One 32-bit counter input
channel
• No external power required
Software
• TracerDAQ® software included for
acquiring and displaying data and
generating analog signals
• Universal Library includes support for Visual Studio® and Visual
Studio® .NET, including examples
for Visual C++®, Visual C#®, Visual
Basic®, and Visual Basic® .NET
• InstaCal software utility for installing, calibrating, and testing
• ULx for NI LabVIEW™
• DAQFlex open-source software
framework – includes support
for Linux®, and Mac® platforms
(USB‑1208FS-Plus/1408FS-Plus only)
• Comprehensive drivers for
DASYLab®
• USB-1208LS/1208FS/1408FS
supported by MATLAB® Data
Acquisition Toolbox™
• Supported Operating Systems: Windows® 8/7/Vista®/XP SP2,
32-bit or 64-bit
All devices in this series offer eight singled-ended or four differential analog inputs, two
analog outputs, 16 digital I/O, and one counter input. The USB-1208FS-Plus/1408FS-Plus
also include eight high-current (24 mA) digital I/O connections and DAQFlex support.
Overview
Analog Input
This product series consists of the following low-cost, analog and digital I/O
devices:
USB‑1208LS/1208FS/1208FS-Plus: These
devices provide eight, 11-bit SE analog
inputs or four, 12-bit DIFF analog inputs.
• USB‑1208LS
• USB-1208FS and USB-1208FS-Plus
• USB-1408FS and USB-1408FS-Plus
All of these devices offer four differential
(DIFF) or eight single-ended (SE) analog
inputs, two analog outputs, 16 digital
I/O channels, and one counter input.
USB‑1408FS/1408FS-Plus: These devices
provide eight, 13-bit SE analog inputs or
four, 14-bit DIFF analog inputs.
All devices support software‑selectable
ranges that provide inputs from
±1 V to ±20 V in a DIFF configuration,
and ±10 V in a SE configuration.
Everything you need to begin acquiring, viewing, and storing data is
included with these devices, including
­comprehensive software support.
USB-1208FS/LS/1408FS Series Selection Chart
Model
Analog
Inputs
Sampling
Rate
Analog
Outputs
Concurrent AI/AO
Scanning Operations
Digital Output
Event
Counters
DAQFlex
Support
USB-1208LS
8 SE/4 DIFF
1.2 kS/s max
2
±2.5 mA per Pin
1
–
USB-1208FS
8 SE/4 DIFF
50 kS/s max
2
±6.0 mA per Pin
1
–
USB-1208FS-Plus
8 SE/4 DIFF
50 kS/s max
2
±6.0 mA per Pin (Port A)
±24.0 mA per Pin (Port B)
1
✔
USB-1408FS
8 SE/4 DIFF
48 kS/s max
2
±6.0 mA per Pin
1
–
USB-1408FS-Plus
8 SE/4 DIFF
48 kS/s max
2
±6.0 mA per Pin (Port A)
±24.0 mA per Pin (Port B)
1
✔
Measurement Computing
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✔
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USB-1208FS/LS/1408FS Series
General Information
Digital I/O
Sampling Rate
USB‑1208LS: When scanning continuously to computer
memory (hardware-paced mode), the USB-1208LS can sample
at a maximum of 1.2 kS/s. Burst mode into the 4 kS FIFO is
also available at rates up to 8 kS/s.
All devices provide 16 TTL-level digital I/O lines. Digital I/O
can be programmed on each 8-bit port (Port A and Port B) for
either input (default) or output.
USB-1208FS-Plus and USB-1408FS-Plus: Port B0 through Port B7
are high-current drive (24 mA) digital I/O connections.
USB-1208FS/1208FS-Plus and USB‑USB-1408FS/1408FS-Plus:
When scanning continuously to computer memory (hardware-paced mode), the USB-1208FS/1208FS-Plus can sample at
a maximum of 50 kS/s, and the USB-1408FS/1408FS-Plus can
sample at a maximum of 48 kS/s.
Event Counter Input
Each device supports one 32-bit TTL-level counter that accepts
inputs up to 1 MHz.
Channel-Gain Queue
MCC DAQ Software
The channel-gain queue feature lets you configure a list of
channels and gains for each scan. Each channel can have a different gain setting. The gain settings are stored in a channelgain queue list that is written to local memory on the device.
Each device ships with the MCC DAQ software CD, which
includes InstaCal, a software utility for installing, calibrating,
and testing Measurement Computing hardware, along with
the following software packages:
The USB-1208LS channel-gain queue list can contain up to
eight channels in SE mode and up to four channels in DIFF
mode. The channels can be listed in any order.
TracerDAQ
TracerDAQ is an out-of-the-box application that can generate,
acquire, analyze, display, and export data within seconds of
installing Measurement Computing data acquisition hardware.
TracerDAQ includes a strip chart, an oscilloscope, a function generator, and a rate generator, all of which are accessed
through a common, easy-to-use interface.
The USB-1208FS and USB-1408FS channel-gain queue can
contain up to 16 channels listed in any order.
The USB-1208FS-Plus and USB-1408FS-Plus channel-gain
queue can contain up to eight unique channels in SE mode
and up to four unique channels in DIFF mode. The channels
can be non-consecutive, but must be listed in increasing order.
Analog Output
The maximum analog output update rate for all devices
depends on several factors, including USB port speed.
USB‑1208LS: This device offers two 10-bit analog outputs with
a range of 0 V to 5 V.
One analog output updates at a maximum rate of 100 S/s; two
analog outputs update at a maximum rate 50 S/s each. The
USB-1208LS updates in software-paced mode only.
USB-1208FS and USB‑USB-1408FS: Both devices offer two
12-bit analog outputs with a range of 0 V to 4.096 V.
When updating continuously from computer
memory (hardware-paced mode), one analog output updates
at a maximum rate of 10 kS/s; two analog outputs update
simultaneously at a maximum rate of 5 kS/s each.
TracerDAQ provides four virtual instrument applications used to
graphically display and store input data.
USB-1208FS-Plus and USB‑USB-1408FS-Plus: Both devices offer
two 12-bit analog outputs with a range of 0 V to 5 V.
When updating continuously from computer
memory (hardware-paced mode), the analog outputs update at
a maximum rate of 50 kS/s per channel.
Measurement Computing
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USB-1208FS/LS/1408FS Series
General Information & Specifications
Universal Library
The Universal Library (UL) is a set of programming libraries
for developing applications with Visual Studio programming
languages (and others) for use with Measurement Computing
hardware. UL includes a complete function library that simplifies the configuration and operation of your measurement
device. UL supports Visual Studio and Visual Studio .NET, and
includes 64-bit driver support for Windows 8, 7 and Vista.
ULx for NI LabVIEW
ULx for NI LabVIEW is a comprehensive library of graphical
functions and example programs comprising all the power of
the Universal Library. ULx for NI LabVIEW is compatible with
NI LabVIEW 8.5 and later, and allows quick development of
NI LabVIEW instrumentation, acquisition, and control applications with Measurement Computing hardware.
DASYLab gives users the ability to create applications by simply
dragging-and-dropping functional icons on a worksheet, connecting
the icons together, and running the program. DASYLab supports
most MCC data acquisition hardware.
Software Available Separately
DAQFlex (USB-1208FS-Plus/1408FS-Plus Only)
For DAQ programming in virtually any OS – including Linux
and Mac platforms – the DAQFlex framework combines a small
footprint driver with a message-based command protocol.
The simplicity of the driver is enabled with a message-based
protocol that offers an efficient yet powerful interface to DAQ
devices and a common command set that simplifies application development.
The USB-1208LS/1208FS/1408FS are also supported by the
MATLAB Data Acquisition Toolbox.
Specifications
General
Environment
Operating Temperature: 0 ˚C to 70 ˚C
Storage Temperature: –40 ˚C to 70 °C
Relative Humidity: 0% to 90% non-condensing
Communications
USB‑1208LS: USB 1.1 low-speed mode (1.5 Mbps)
USB-1208FS/1208FS-Plus/1408FS/1408FS-Plus: USB 2.0 full-speed mode
(12 Mbps)
Acquisition Data Buffer (USB‑1208LS Only): 4 kS
Signal I/O Connector: 2 banks of screw-terminal blocks
Dimensions (L × W × H): 79 × 82 × 27 mm (3.10 × 3.20 × 1.05 in.)
TracerDAQ Pro
TracerDAQ Pro is available as a purchased upgrade to
TracerDAQ. TracerDAQ Pro supports more active channels,
more samples per channel, and a selection of options and
enhancements designed to address many test and measurement applications.
Analog Input
DASYLab
A/D Converter Type: Successive approximation
Channels: 8 SE or 4 DIFF, programmable as SE or DIFF
Input Common-Mode Voltage Range for Linear Operation
SE Mode: CHx to GND, ±10 V max
DIFF Mode: CHx to GND, –10 V min, 20 V max
Absolute Maximum Input Voltage
USB‑1208LS: CHx to GND,±40 V max
USB-1208FS/1208FS-Plus/1408FS/1408FS-Plus: CHx to GND, ±28 V max
Input Impedance: 122 kΩ
Input Current
Input current is a function of applied voltage on the analog input channels.
For a given input voltage, Vin, the input leakage is approximately equal to
(8.181 * Vin–12) µA
Vin = 10 V, 70 µA typ
Vin = 0 V, –12 µA typ
Vin = –10 V, –94 µA typ
Ranges: Software or selectable on a per-channel basis
SE Mode: ±10 V
DIFF Mode: ±20 V, ±10 V, ±5 V, ±4 V, ±2.5 V, ±2.0 V, ±1.25 V, ±1.0 V
Customers needing more performance than TracerDAQ Pro
provides can purchase DASYLab, an icon-based data acquisition, graphics, control, and analysis software package.
DASYLab offers real-time analysis and control, and provides
the ability to create custom graphical user interfaces without
programming.
Compared to other graphical programming environments,
DASYLab has a very short user-learning curve. Many applications can be configured in a few minutes, rather than days or
weeks.
Measurement Computing
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USB-1208FS/LS/1408FS Series
Specifications
USB-1208LS/1208FS/1408FS Block Diagram
8
Event Counter
1 Channel (32-bit)
Digital I/O
Port B
SYNC (USB-120FS/1408FS only)
TRIG_IN
16
8
Digital I/O
Port A
1
CAL (USB-1208LS/1208FS only)
USB
Microcontroller
Analog Output
2 Channels1
Analog Input
8 Single-Ended Channels2
or
4 Differential Channels3
16
USB-1208LS
USB-1208FS/1408FS
Low-speed
USB 1.1
Compliant
Interface
Full-speed
USB 2.0
Compliant
Interface
1
10-bit on USB-1208LS,
12-bit on USB-1208FS/1408FS
2
11-bit on USB-1208FS,
13-bit on USB-1408FS
3
12-bit on USB-1208FS,
14-bit on USB-1408FS
2
8
USB
Throughput
Maximum throughput scanning to computer memory depends on the
computer being used.
USB‑1208LS
Software Paced: 50 S/s typ, system‑dependent
Hardware Paced: 1.2 kS/s
Burst Scan to 4 kS FIFO: 8 kS/s
USB‑1208FS/1208FS-Plus
Software Paced: 250 S/s typ, system‑dependent
Hardware Paced: 50 kS/s
USB‑1408FS/1408FS-Plus
Software Paced: 250 S/s typ, system‑dependent
Hardware Paced: 48 kS/s
Channel Gain Queue
USB‑1208LS/1208FS-Plus/1408FS-Plus: Up to 8 elements, software-selectable
channel and range
USB‑1208FS/1408FS: Up to 16 elements, software-selectable channel and
range
Resolution
USB‑1208LS/1208FS/1208FS-Plus
DIFF: 12 bits, no missing codes
SE: 11 bits (the AD7870 converter only returns 11-bits (0–2047 codes) in
SE mode)
USB‑1408FS/1408FS-Plus
DIFF: 14 bits, no missing codes
SE: 13 bits (the AD7871 converter only returns 13-bits (0–8192 codes) in
SE mode)
CAL Accuracy
USB‑1208LS: CAL = 2.5 V, ±0.05% typ, ±0.25% max
USB‑1208FS: CAL = 2.5 V, ±36.25 mV max
Integral Linearity Error
USB‑1208LS/1208FS/1208FS-Plus: ±1 least significant bit (LSB) typ
USB‑1408FS/1408FS-Plus: ±2 LSB typ
Differential Linearity Error: ±0.5 LSB typ
Repeatability: ±1 LSB typ
Measurement Computing
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CAL Current (USB‑1208LS/1208FS Only)
Source: 5 mA max
Sink
USB‑1208LS: 20 µA min, 200 nA typ
USB‑1208FS: 20 µA min, 100 µA typ
Absolute Accuracy Long Term Drift (USB‑1408FS/1408FS-Plus Only)
Extrapolating the long term drift accuracy specifications provides the approximate long term drift of the USB‑1408FS intermediate input ranges.
±20 V Range: ±3 LSB typ (Δt = 1000 hrs)
±4 V Range: ±6 LSB typ (Δt = 1000 hrs)
±1 V Range: ±8 LSB typ (Δt = 1000 hrs)
2.5VREF Accuracy (USB‑1408FS Only)
±36.25 mV max
2.5VREF Output Current (USB‑1408FS/1408FS-Plus Only)
Source: 5 mA max
Sink: 20 µA min, 100 µA typ
Trigger Source (Software-Selectable)
External Digital: TRIG_IN
Clock Source (All Devices Except USB-1208LS, Software-Selectable)
Internal
External (SYNC), Rising Edge Triggered
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USB-1208FS/LS/1408FS Series
Specifications
USB-1208FS-Plus and USB-1408FS-Plus Block Diagram
8
Digital I/O
Port B
(High-Drive)
8
Digital I/O
Port A
Event Counter
1 Channel (32-bit)
Full-speed
USB 2.0
Compliant
Interface
16
1
SYNC
TRIG_IN
USB
Microcontroller
Analog Output
2 Channels (12-bit)
2
Analog Input
8 Single-Ended Channels1
or
4 Differential Channels2
Analog Input Accuracy
USB-1208LS/1208FS/1208FS-Plus
Range
Accuracy (LSB)
5.1
±10 V
6.1
±5 V
8.1
±4 V
9.1
±2.5 V
12.1
±2 V
14.1
±1.25 V
20.1
±1 V
Range
24.1
12-bit on USB-1208FS-Plus,
14-bit on USB-1408FS-Plus
Absolute Accuracy
0 to 50°C
±20 V
±10.98 mV
±49.08 mV
±10 V
±7.32 mV
±33.42 mV
±5 V
±3.66 mV
±20.76 mV
±4 V
±2.92 mV
±19.02 mV
±2.5 V
±1.83 mV
±14.97 mV
±2 V
±1.70 mV
±14.29 mV
±1.25 V
±1.21 mV
±12.18 mV
±1 V
±1.09 mV
±11.63 mV
±10.98 mV
±49.08 mV
Single-Ended Mode
4.0
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Absolute Accuracy
25°C
±10 V
Measurement Computing
11-bit on USB-1208FS-Plus,
13-bit on USB-1408FS-Plus
Differential Mode
Single-Ended Mode
±10 V
1
Analog Input Accuracy
USB-1408FS/1408FS-Plus
Differential Mode
±20 V
8
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USB-1208FS/LS/1408FS Series
Specifications
Analog Input Accuracy Components:
USB-1208LS/1208FS
Range
% of
Reading
Gain Error at
Full Scale
Offset
Noise Performance
USB-1408FS/1408FS-Plus
Accuracy at
Full Scale
Range
Differential Mode
Typical Counts
Least Significant Bit‑
Root Mean Square (LSBRMS)
Differential Mode
±20 V
0.2
40 mV
9.766 mV
49.766 mV
±20 V
8
1.21
±10 V
0.2
20 mV
9.766 mV
29.766 mV
±10 V
8
1.21
±5 V
0.2
10 mV
9.766 mV
19.766 mV
±5 V
9
1.36
±4 V
0.2
8 mV
9.766 mV
17.766 mV
±4 V
10
1.51
±2.5 V
0.2
5 mV
9.766 mV
14.766 mV
±2.5 V
12
1.81
±2 V
0.2
4 mV
9.766 mV
13.766 mV
±2 V
14
2.12
±1.25 V
0.2
2.5 mV
9.766 mV
12.266 mV
±1.25 V
18
2.72
±1 V
0.2
2 mV
9.766 mV
11.766 mV
±1 V
22
3.33
20 mV
19.531 mV
39.531 mV
8.0
1.21
Single-Ended mode
±10 V
Single-Ended Mode
0.2
±10 V
Analog Output
Resolution
USB‑1208LS: 10 bits, 1 in 1024
USB-1208FS/1208FS-Plus/1408FS/1408FS-Plus: 12 bits, 1 in 4096
Output Range
USB-1208LS/1208FS-Plus/1408FS-Plus: 0 V to 5 V
USB‑1208FS/1408FS: 0 V to 4.096 V, 1 mV per LSB.
Number of Channels: 2
Throughput
Maximum throughput scanning to computer memory depends on the
computer being used.
USB‑1208LS
Software Paced
Single Channel: 100 S/s
Dual channel, simultaneous update: 50 S/s
USB-1208FS/1208FS-Plus/1408FS/1408FS-Plus
Software Paced: 250 S/s single channel typ, system‑dependent
Hardware Paced
USB‑1208FS/1408FS
Single Channel: 10 kS/s
Dual Channel: 5 kS/s
USB‑1208FS-Plus/1408FS-Plus: 50 kS/s max per channel
Power On and Reset Voltage
USB‑1208LS/1208FS/1208FS-Plus: Initializes to 000h code
USB‑1408FS/1408FS-Plus: 0 V, ±20 mV typ, initializes to 000h code
Maximum Voltage (USB-1208LS Only)
Vs is the USB +5 V power. The maximum analog output voltage is equal to Vs
at no load. V is system-dependent and may be less than 5 V.
No Load: Vs
1 mA Load: 0.99 * Vs
5 mA Load: 0.98 * Vs
Output Drive (Each D/A OUT)
USB-1208LS: 30 mA
USB-1208FS and USB-1408FS 15 mA
USB-1208FS-Plus and USB-1408FS-Plus: 5 mA, sourcing
Slew Rate
USB-1208LS: 0.14 V/ms typ
USB-1208FS/1208FS-Plus/1408FS/1408FS-Plus: 0.8 V/µs typ
Accuracy (All Values are ±) (All Devices Except USB-1208LS)
USB‑1208FS/1408FS
0 V to 4.096 V: 4.0 LSB typ, 45.0 LSB max
USB‑1208FS-Plus/1408FS-Plus
0 V to 5 V: 4.0 LSB typ, 45.0 LSB max (accuracy tested at no load)
Noise Performance
USB-1208FS/1208FS-Plus
Range
Typical Counts
Least Significant Bit‑
Root Mean Square (LSBRMS)
2
0.30
Differential Mode
±20 V
±10 V
2
0.30
±5 V
3
0.45
±4 V
3
0.45
±2.5 V
4
0.61
±2 V
5
0.76
±1.25 V
7
1.06
±1 V
8
1.21
2
0.30
Single-Ended Mode
±10 V
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USB-1208FS/LS/1408FS Series
Specifications
USB-1208LS
Input High Voltage: 3.0 V min, 15.0 V absolute max
Input Low Voltage: 0.8 V max
Input Leakage Current: ±1.0 µA
All Other Devices
Input Type: Schmitt trigger, 47 kΩ pull-down to ground
Schmitt Trigger Hysteresis: 1.01 V typ, 0.6 V min, 1.5 V max
Input High Voltage Threshold: 2.43 V typ, 1.9 V min, 3.1 V max
Input High Voltage Limit: 5.5 V absolute max
Input Low Voltage Threshold: 1.42 V typ, 1.0 V min, 2.0 V max
Input Low Voltage Limit: –0.5 V absolute min, 0 V recommended min
Analog Output Accuracy Components (All Values are ±)
(All Devices Except USB-1208LS)
USB‑1208FS/1408FS
Range: 0 V to 4.096 V
USB‑1208FS-Plus/1408FS-Plus
Range: 0 V to 5 V
% of FSR: 0.1 typ, 0.9 max
Gain Error at Full Scale: 4.0 mV typ, 36.0 mV max
Offset:1 1.0 mV typ, 9.0 mV max
Accuracy at FS: 4.0 mV typ, 45.0 mV max
Digital I/O
External Clock Input/Output (All Devices Except USB‑1208LS)
Digital Type
USB‑1208LS: 82C55
All Other Devices: CMOS
Number of I/O: 16 (Port A0 through A7, Port B0 through B7)
Configuration
2 banks of 8
USB‑1208FS-Plus/1408FS-Plus: Port B is high-current drive
Pull Up/Pull-Down Configuration: All pins pulled up to 5 V through 47 kΩ
resistors (default).
All Devices Except USB-1208LS: Change to pull-down using internal userconfigurable jumpers.2
USB‑1208LS: Positions available for pull-down to ground. Hardware-selectable
through 0 Ω resistors as a factory option.
Input High Voltage: 2.0 V min, 5.5 V absolute max
Input Low Voltage: 0.8 V max, –0.5 V absolute min, 0 V recommended min
USB-1208LS
Output High Voltage (IOH = –2.5 mA): 3.0 V min
Output Low Voltage (IOL = 2.5 mA): 0.4 V max
USB‑1208FS/1408FS
Output High Voltage (IOH = –6.0 mA): 3.84 V min
Output Low Voltage (IOL = 6.0 mA): 0.33 V max
USB‑1208FS-Plus/1408FS-Plus
Output High Voltage, Port A: 4.4 V min (IOH = –20 µA),
3.84 V min (IOH = –6.0 mA)
Output Low Voltage, Port A: 0.1 V max (IOL = 20 µA),
0.33 V max (IOL = 6.0 mA)
Output High Voltage, Port B: 4.4 V min (IOH = –50 µA),
3.76 V min (IOH = –24.0 mA)
Output Low Voltage, Port B: 0.1 V max (IOH = 50 µA),
0.44 V max (IOH = 24.0 mA)
Power On and Reset State: Input
Pin Name: SYNC
Pin Type: Bidirectional
Direction (Software-Selectable)
Input (Default): Receives A/D clock from external source. Active on rising
edge.
Output: Outputs internal A/D clock. Active on rising edge.
Input Clock Rate
USB-1208FS/1208FS-Plus: 50 kHz, max
USB-1408FS/1408FS-Plus: 48 kHz, max
Clock Pulse Width
Input Mode: 1 µs min
Output Mode: 5 µs min
Input Type: Schmitt trigger, 47 kΩ pull-down to ground
Schmitt Trigger Hysteresis: 1.01 V typ, 0.6 V min, 1.5 V max
Input High Voltage Threshold: 2.43 V typ, 1.9 V min, 3.1 V max
Input High Voltage Limit: 5.5 V absolute max
Input Low Voltage Threshold: 1.42 V typ, 1.0 V min, 2.0 V max
Input Low Voltage Limit: –0.5 V absolute min, 0 V recommended min
Output High Voltage: 4.4 V min (IOH = –50 µA), 3.80 V min (IOH = –8 mA)
Output Low Voltage: 0.1 V max (IOL = 50 µA), 0.44 V max (IOL = 8 mA)
Counter
Pin name: CTR
Counter Type: Event counter
Number of Channels: 1
Input Type
USB-1208LS: TTL, rising edge triggered
USB-1208FS/1408FS: Schmitt trigger, 47 kΩ pull-down to ground
Input Source: CTR screw terminal
Resolution: 32 bits
Maximum Input Frequency: 1 MHz
High Pulse Width: 500 ns min
Low Pulse Width: 500 ns min
USB-1208LS
Schmidt Trigger Hysteresis 20 mV to 100 mV
Input Leakage Current: ±1 µA
Input High Voltage: 4.0 V min, 5.5 V absolute max
Input Low Voltage: 1.0 V max, –0.5 V absolute min
All Other Devices
Schmidt Trigger Hysteresis: 1.01 V typ, 0.6 V min, 1.5 V max
Input High Voltage Threshold: 2.43 V typ, 1.9 V min, 3.1 V max
Input High Voltage Limit: 5.5 V absolute max
Input Low Voltage Threshold: 1.42 V typ, 1.0 V min, 2.0 V max
Input Low Voltage Limit: –0.5 V absolute min, 0 V recommended min
External Trigger
Trigger Source: External digital, TRIG_IN
USB-1208LS: Schmitt trigger input protected with a 1.5 kΩ series resistor)
Trigger Mode
USB‑1208LS: Level sensitive; software-selectable for TTL level high or low
input
All Other Devices: Edge sensitive; software-selectable for CMOS‑compatible
rising or falling edge
Trigger Latency
USB‑1208LS: Burst, 25 µs min, 50 µs max
All Other Devices: 10 µs max
Trigger Pulse Width
USB‑1208LS: Burst, 40 µs min
All Other Devices: 1 µs min
1 USB-1208FS-Plus/1408FS/1408FS-Plus: Zero-scale offsets may result in a
fixed zero-scale error producing a dead-band digital input code region. In
this case, changes in digital input code of less than 0x040 may not produce
a corresponding change in the output voltage. The offset error is tested and
specified at code 0x040.
USB-1208FS: Negative offsets result in a fixed zero-scale error or dead-band.
At the maximum offset of –9 mV, any input code of less than 0x009 does not
produce a response in the output.
2 USB‑1208FS hardware revisions D and later, and USB-1408FS hardware
with part number 193331x (where x is the revision letter) can be changed to
pull-down using an internal jumper. Other revisions/part numbers can be
configured at the factory for pull-down.
Measurement Computing
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USB-1208FS/LS/1408FS Series
Specifications & Ordering
Ordering Information
Non-Volatile Memory
USB‑1208LS
Memory Size: 8192 bytes
Memory Configuration
Address 0x0000 to 0x17FF: Read/write access, A/D data (4 kS)
Address 0x1800 to 0x1EFF: Read/write access, user data area
Address 0x1F00 to 0x1FEF: Read/write access, calibration data
Address 0x1FF0 to 0x1FFF: Read/write access, system data
USB‑1208FS/1408FS
EEPROM: 1,024 bytes
EEPROM Configuration
USB-1208FS
Address 0x000 to 0x07F: Reserved access, 128 bytes system data
Address 0x080 to 0x1FF: Read/write access, 384 bytes calibration data
Address 0x200 to 0x3FF: Read/write access, 512 bytes user area
USB‑1408FS
Address 0x000 to 0x1FF: Read/write, access 512 bytes user area
Address 0x200 to 0x3FF: Read/write access, 512 bytes calibration data
USB‑1208FS-Plus/1408FS-Plus
EEPROM: 2,048 bytes (768 bytes calibration, 256 bytes user,
1,024 bytes DAQFlex)
Description
Part No.
USB-based DAQ device with eight 12-bit analog inputs, 1.2 kS/s,
two analog outputs, and 16 digital I/O lines
USB‑1208LS
USB-based DAQ device with eight analog inputs, 50 kS/s,
up to 12-bit resolution, two D/A outputs,
and 16 digital I/O lines.
USB‑1208FS
USB-based DAQ device with eight analog inputs, 50 kS/s,
up to 12-bit resolution, two D/A outputs,
16 digital I/O lines (includes eight high-current lines)
and DAQFlex support.
USB-1208FS-Plus
USB-based DAQ device with eight analog inputs, 48 kS/s,
up to 14-bit resolution, two analog outputs,
and 16 digital I/O lines.
USB‑1408FS
USB-based DAQ device with eight analog inputs, 48 kS/s,
up to 14-bit resolution, two analog outputs,
16 digital I/O lines (includes eight high-current lines)
and DAQFlex support.
USB‑1408FS-Plus
Software
Icon-based data acquisition, graphics, control, and analysis software DASYLab
Out-of-the-box virtual instrument suite with
strip chart, oscilloscope, function generator, and rate
generator – professional version
TracerDAQ Pro
Power3
USB‑1208LS
Supply Current: 20 mA (total current requirement; includes up to 5 mA for
the status LED)
5 V USB Power Available
Connected to Self-powered Hub: 4.5 V min, 5.25 V max
Connected to Bus-powered Hub: 4.1 V min, 5.25 V max
Output Current (total amount of current that can be sourced from the USB 5 V,
analog outputs and digital outputs)
Connected to Self-powered Hub: 450 mA min, 500 mA max
Connected to Bus-powered Hub: 50 mA min, 100 mA max
USB‑1208FS/1408FS
Supply Current: 80 mA (total current requirement; includes up to 10 mA for
the status LED)
5 V USB Power Available
Connected to Self-powered Hub: 4.5 V min, 5.25 V max
Connected to Bus-powered Hub: 4.1 V min, 5.25 V max
Output Current (total amount of current that can be sourced from the USB 5 V,
analog outputs and digital outputs)
Connected to Self-powered Hub or Externally Powered
Root Port Hub: 420 mA max
Connected to Bus-powered Hub: 20 mA max
USB‑1208FS-Plus/1408FS-Plus
Supply Current
During USB Enumeration: < 100 mA
After USB Enumeration, Including DIO, AO, SYNC, and
+VO Output Loading: < 500 mA
+VO Power Available After USB Enumeration: 4.5 V min, 5.25 V max
+VO Output Current After USB Enumeration: 100 mA max
OEM Board-Only Versions Also Available
USB-1208FS/LS/1408FS Series devices are also available in boardonly form factors for OEM and embedded applications.
All devices can be customized to meet customer needs.
A USB-1408FS is shown here with the case removed.
Contact Measurement Computing for OEM/custom versions.
3 Self-powered USB hubs and hosts have their own power supply. The USB
port(s) on your computer are root port hubs. All externally powered root port
hubs (desktop computers) provide up to 500 mA of current for a USB device.
Battery-powered root port hubs provide 100 mA or 500 mA, depending upon
the manufacturer. A laptop PC that is not connected to an external power
adapter is an example of a battery-powered root port hub.
Bus-powered USB hubs and hosts do not have their own power supply.
Measurement Computing
USB-1208LS-FS-Plus_1408FS-Plus-data.indd
(508) 946-5100
8
[email protected]
Document Revision 3, April, 2013
© Copyright 2011-2013, Measurement Computing Corporation
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