USB-1208FS-Plus/LS/1408FS-Plus Series
12-bit and 14-Bit Multifunction DAQ Devices
Features• Low-cost USB DAQ devices
with 4 differential or 8 singleended analog inputs• Maximum sample rates ranging
from 1.2 kS/s to 50 kS/s
• 2 analog outputs• 16 digital I/O• One 32-bit counter input
channel• No external power required• All devices available withenclosure and screw terminals• Board-only OEM versions of-Plus devices also available
All devices in this series offer eight singled-ended or four differential analog inputs, twoanalog outputs, 16 digital I/O, and one counter input. Eight of the digital I/O on theUSB-1208FS-Plus/1408FS-Plus can be used for high-current (24 mA) connections.

Supported Operating Systems• Windows® 11/10/8/7/Vista®XP
32/64-bit• Linux®

Overview
The USB-1208FS-Plus/LS/1408FS-Plus Series consists of low-cost analog and digitalI/O devices. All devices in this series offer four differential (DIFF) or eight singleended (SE) analog inputs, two analog outputs, 16 digital I/O and one event counter.
The USB-1208LS offers sample rates up to 1.2 kS/s, while all USB-1208FS-Plus andUSB-1408FS-Plus devices (standard and OEM) offer sample rates up to 50 kS/s.
All devices in this series also support multiple software-selectable voltage input
ranges, making them ideally suited for a wide assortment of measurements.

USB-1208FS/LS/1408FS Series Selection Chart
Specification

USB-1208LS

USB-1208FS-Plus
USB-1208FS-Plus-OEM

USB-1408FS-Plus
USB-1408FS-Plus-OEM

Analog Input

8 SE/4 DIFF

8 SE/4 DIFF

8 SE/4 DIFF

Maximum Sample
Rate

1.2 kS/s

50 kS/s48 kS/s max• Android™ (-Plus devices only)

Analog Input
The USB-1208LS and USB-1208FS-Plusprovide eight, 11-bit SE analog inputs or
four, 12-bit DIFF analog inputs.
The USB-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.

Analog Output

2

2

2

Sample Rate

Concurrent AI/AO
Scanning Operations

–

✔

✔

Digital Output±2.5 mA per Pin±6.0 mA per Pin (Port A)±24.0 mA per Pin(Port B)

±6.0 mA per Pin (Port A)±24.0 mA per Pin(Port B)

USB-1208LS: When scanning in hardwarepaced mode, the USB-1208LS can sample
at a maximum of 1.2 kS/s.

Event Counters

1

1

1

DAQami Support

✔

✔

✔

UL for Android
Support–✔

✔

Linux Support

✔

✔

✔

Matlab Support

✔

✔

✔

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The device also supports BURSTIO mode
into the 4 kS FIFO at rates up to 8 kS/s.
USB-1208FS-Plus/1408FS-Plus: In hardware-paced mode, the USB-1208FS-Plus
can sample at a maximum of 50 kS/s,
and the USB-1408FS-Plus can sample ata maximum of 48 kS/s.

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USB-1208FS-Plus/LS/1408FS-Plus Series
Overview
Event Counter Input

Channel-Gain Queue
The channel-gain queue feature lets users 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 channel-gain queue
list that is written to local memory on the device.
•

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.

•

The USB-1208FS-Plus/1408FS-Plus channel-gain queue cancontain 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.

Each device supports one 32-bit TTL-level counter that accepts
inputs up to 1 MHz.

External Clock I/O (-Plus devices only)
The USB-1208FS-Plus and USB-1408FS-Plus have a bidirectional
external clock terminal. When configured for input, A/D conversions can be paced by an external source.
These devices support TTL-level input signals up to 50 kHz.
When configured for output, these devices can pace A/D conversions on a second device.

Trigger Input

Analog Output
The maximum analog output update rate for all devices depends
on several factors, including USB port speed.

The USB-1208FS-Plus and USB-1408FS-Plus each provide anexternal digital trigger input that is software-selectable for risingor falling edge, high or low level.

USB-1208LS

The USB-1208LS provides an external digital trigger input thatis software-selectable for high or low level.

This device offers two 10-bit analog outputs with a range of0 V to 5 V.

Calibration

One analog output updates at a maximum rate of 100 S/s; twoanalog outputs update at a maximum rate 50 S/s each. The
USB-1208LS updates in software-paced mode only.

All USB-1208FS-Plus/LS/1408FS-Plus Series devices are factorycalibrated. Specifications are guaranteed for one year. For calibration beyond one year, return the device to the factory forrecalibration.

USB-1208FS-Plus/1408FS-Plus
All devices offer two 12-bit analog outputs with a range of 0 V
to 5 V.

The USB-1208LS also supports field calibration with InstaCal.
Perform calibration whenever the ambient temperature changes
by more than ±10 °C from the last calibration.

When updating continuously from computer
memory (hardware-paced mode), the analog outputs update ata maximum rate of 50 kS/s per channel.

OEM Versions (-Plus devices only)
The USB-1208FS-Plus-OEM and USB-1408FS-Plus-OEM have aboard-only form factor with header connectors for OEM andembedded applications (no case, CD, or USB cable included).
All devices can be further customized to meet customer needs.

Concurrent AI/AO Scanning Operations(-Plus devices only)
All USB-1208FS-Plus/1408FS-Plus devices support executing ananalog input scan and analog output scan at the same time.

Digital I/O
All devices provide 16 TTL-level digital I/O lines. Digital I/O canbe programmed on each 8-bit port (Port A and Port B) for either
input (default) or output.
On the USB-1208FS-Plus and USB-1408FS-Plus, port B0
through Port B7 are high-current drive (24 mA) digital I/O
connections.
The USB-1208FS-Plus-OEM and USB-1408FS-Plus-OEM have thesame specifications as the USB-1208FS-Plus/1408FS-Plus, but ina board‑only form factor with header connectors instead of screw
terminals.

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USB-1208FS-Plus/LS/1408FS-Plus Series
Software
Software Support
The USB-1208FS-Plus/LS/1408FS-Plus Series is supported by the software in the table below.
Ready-to-Run Applications

DAQami™

Data acquisition companion software with drag-and-drop interface that is used to acquire,view, and log data, and generate signals. DAQami can be configured to log analog, digital, andcounter channels, and to view that data in real-time or post-acquisition on user-configurable
displays. Logged data can be exported for use in Excel® or MATLAB®. Windows OS
DAQami is included with the free MCC DAQ Software bundle.

InstaCal™

TracerDAQ™ andTracerDAQ Pro

An interactive installation, configuration, and test utility for MCC hardware. Windows OS
InstaCal is included with the free MCC DAQ Software bundle.
Virtual strip chart, oscilloscope, function generator, and rate generator applications used togenerate, acquire, analyze, display, and export data. Supported features may vary by hardware.
The Pro version provides enhanced features. Windows OS
TracerDAQ is included with the free MCC DAQ Software bundle.
TracerDAQ Pro is available as a purchased software download.

General-Purpose Programming Support
Universal Library™
(UL) for Windows

Library for developing applications in C, C++, VB, C# .Net, VB .Net, and Python on Windows.
The UL for Windows is included with the free MCC DAQ Software bundle.
The UL Python API for Windows is available on GitHub (https://github.com/mccdaq/mcculw).
Library for developing applications in C, C++, and Python on Linux.

UL for Linux®

UL for Linux is available on GitHub (https://github.com/mccdaq/uldaq).
UL for Linux is supported by -Plus devices only.
Open-source, third-party Linux drivers are also available for supported MCC devices.

UL for Android™
(-Plus devices only)

Library of Java classes for programmers who develop apps for Android-based mobile devices.
UL for Android communicates with select MCC DAQ devices. Supports Android project development on Windows, Linux, Mac OS X.
UL for Android is included with the free MCC DAQ Software bundle.

Application-Specific Programming Support
ULx forNI LabVIEW™

DASYLab®

MATLAB driver®

A comprehensive library of VIs and example programs for NI LabVIEW that is used to develop
custom applications that interact with most MCC devices. Windows OS
ULx for NI LabVIEW is included with the free MCC DAQ Software bundle.
Icon-based data acquisition, graphics, control, and analysis software that allows users to create
complex applications in minimal time without text-based programming. Windows OS
DASYLab is available as a purchased software download. An evaluation version is available for28 days.
High-level language and interactive environment for numerical computation,
visualization, and programming. The Mathworks Data Acquisition Toolbox™ allows users toacquire data from most MCC PCI and USB devices.
Visit www.MathWorks.com for more information about the Data Acquisition Toolbox.

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USB-1208FS-Plus/LS/1408FS-Plus SeriesSpecifications
Specifications

Analog Input Accuracy
USB-1208FS-Plus

All specifications are subject to change without notice.
Typical for 25°C unless otherwise specified.

Range

Accuracy (LSB)

Differential Mode

USB-1208FS-Plus and USB-1408FS-Plus
These specifications apply to both standard and OEM versions unless noted
otherwise.

±20 V

5.1

±10 V

6.1

Analog Input

±5 V

8.1

±4 V

9.1

±2.5 V

12.1

±2 V

14.1

±1.25 V

20.1

±1 V

24.1

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: 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
Throughput
Maximum throughput scanning to computer memory depends on thecomputer being used.
USB-1208FS-Plus		Software paced: 250 S/s typ, system‑dependent
		Hardware paced: 50 kS/s
USB-1408FS-Plus		Software paced: 250 S/s typ, system‑dependent
		Hardware paced: 48 kS/s
Channel gain queue: Up to 8 elements, software-selectable channel and range
Resolution
USB-1208FS-Plus		DIFF: 12 bits, no missing codes
		SE: 11 bits (the AD7870 converter only returns 11-bits (0–2047 codes) inSE mode)USB-1408FS-Plus		DIFF: 14 bits, no missing codes
		SE: 13 bits (the AD7871 converter only returns 13-bits (0–8192 codes) inSE mode)Integral linearity error
USB-1208FS-Plus: ±1 least significant bit (LSB) typ
USB-1408FS-Plus: ±2 LSB typ
Differential linearity error: ±0.5 LSB typ
Repeatability: ±1 LSB typ
Absolute accuracy long term drift (USB-1408FS-Plus only)
Extrapolating the long term drift accuracy specifications provides the approximate long term drift of the USB-1408FS-Plus 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 output current (USB-1408FS-Plus only)
Source: 5 mA max
Sink: 20 µA min, 100 µA typ
Trigger source (software-selectable)
External digital: TRIG_IN
Clock source (software-selectable)
Internal
External (SYNC), Rising Edge Triggered

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Single-Ended Mode
±10 V

4.0

Analog Input Accuracy
USB-1408FS-Plus
Range

Absolute Accuracy
25°C

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

Differential Mode

Single-Ended Mode
±10 V

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USB-1208FS-Plus/LS/1408FS-Plus SeriesSpecifications
Digital I/O

Noise Performance

Digital type: CMOS
Number of I/O: 16 (Port A0 through A7, Port B0 through B7)
Configuration: 2 banks of 8 (port B is the high-current drive)
Pull-up/down configuration: All pins pulled up to 5 V via 47 kΩ resistors (default).
Change to pull-down using internal user-configurable jumpers.
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
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

USB-1208FS-Plus

Range

Typical Counts

Least Significant
BitRoot Mean Square(LSBRMS)

±20 V

2

0.30

±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

Differential Mode

External Trigger

Trigger source: External digital, TRIG_IN
Trigger mode: Edge or level sensitive; software-selectable for CMOS compatible
rising or falling edge, high or low level.
Trigger latency: 10 µs max
Trigger pulse width: 1 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 minSingle-Ended Mode
±10 V

USB-1408FS-Plus
Range

Typical Counts

Least Significant
BitRoot Mean Square(LSBRMS)

External Clock Input/Output

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-Plus: 50 kHz, max
USB-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)

Differential Mode
±20 V

8

1.21

±10 V

8

1.21

±5 V

9

1.36

±4 V

10

1.51

±2.5 V

12

1.81

±2 V

14

2.12

±1.25 V

18

2.72

±1 V

22

3.33

8.0

1.21

Single-Ended Mode
±10 V

Counter

Analog Output

Pin name: CTR
Counter type: Event counter
Number of channels: 1
Input type: 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
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

Resolution: 12 bits, 1 in 4096
Output range: 0 V to 5 V
Number of channels: 2
Throughput
Software paced: 250 S/s single channel typ, system‑dependent
Hardware paced: 50 kS/s max per channel
Power on and reset voltage: 0 V, ±20 mV typ, initializes to 000h code
Output drive (each D/A out): 5 mA, sourcing
Slew Rate: 0.8 V/µs typ
Accuracy, all values are (±), 0 V to 5 V: 4.0 LSB typ, 45.0 LSB max (accuracy
tested at no load)
Analog output accuracy components, all values are (±)
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: 1.0 mV typ, 9.0 mV max
Zero-scale offsets may result in a fixed zero-scale error producing a dead-banddigital 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.
Accuracy at FS: 4.0 mV typ, 45.0 mV max

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Non-Volatile Memory

EEPROM: 2,048 bytes (768 bytes calibration, 256 bytes user,1,024 bytes system data)

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USB-1208FS-Plus/LS/1408FS-Plus SeriesSpecifications
Power*CAL current
		Source: 5 mA max
		Sink: 20 µA min, 200 nA typ
Trigger source (software-selectable): External digital (TRIG_IN)

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

Analog Input Accuracy
Range

GeneralAccuracy (LSB)

Differential Mode

Device type: USB 2.0 full-speed mode (12 Mbps)
Device compatibility: USB 1.1, 2.0

Environment

Operating temperature: 0 ˚C to 70 ˚C
Storage temperature: –40 ˚C to 70 °C
Relative humidity: 0% to 90% non-condensing
Signal I/O connector
USB-1208FS-Plus, USB-1408FS-Plus: 2 banks of screw-terminal blocks
USB-1208FS-Plus-OEM, USB-1408FS-Plus-OEM: Two 20-pin, 0.1 in. pitch
headers

Mechanical

Dimensions (L × W × H)
USB-1208FS-Plus, USB-1408FS-Plus: 79 × 82 × 27 mm (3.20 × 3.10 × 1.05 in.)USB-1208FS-Plus-OEM, USB-1408FS-Plus-OEM: 81.28 × 70.36 × 13.72 mm(3.20 × 2.77 × 0.54 in.)

±20 V

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

24.1

Single-Ended Mode
±10 V

USB-1208LS

4.0

Accuracy Components, All Values are (±)
Range

Analog Input

A/D converter type: Successive approximation
Channels: 8 SE or 4 DIFF, programmable as SE or DIFF
Input voltage range for linear operation, SE modeCHx to GND: ±10 V max
Input common-mode voltage range for linear operation, differential mode,
DIFF modeCHx to GND: –10 V min, 20 V max
Absolute maximum input voltage
CHx to GND: ±40 V max
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
Input impedance: 122 kΩ
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
Throughput
Maximum throughput scanning to computer memory depends on thecomputer being used.
Software paced: 50 S/s typ, system‑dependent
Hardware paced: 1.2 kS/s
BURSTIO to 4 kS FIFO: 8 kS/s
Channel gain queue: Up to 8 elements, software-selectable channel and range
Resolution
DIFF: 12 bits, no missing codes
SE: 11 bits (the AD7870 converter only returns 11-bits (0–2047 codes) inSE mode)CAL accuracy: CAL = 2.5 V, ±0.05% typ, ±0.25% max
Integral linearity error: ±1 least significant bit (LSB) typ
Differential linearity error: ±0.5 LSB typ
Repeatability: ±1 LSB typ% of Reading

Gain Error at FS(mV)

Offset(mV)

Accuracyat FS (mV)

Differential Mode
±20 V

0.2

40

9.766

49.766

±10 V

0.2

20

9.766

29.766

±20 V

0.2

40

9.766

49.766

±10 V

0.2

20

9.766

29.766

±5 V

0.2

10

9.766

19.766

±4 V

0.2

8

9.766

17.766±2.5 V

0.2

5

9.766

14.766

±2 V

0.2

4

9.766

13.766±1.25 V

0.2

2.5

9.766

12.266

±1 V

0.2

2

9.766

11.76620

19.53139.531

Single-Ended Mode
±10 V

0.2

Analog Output

D/A converter type: PWM
Resolution: 10 bits, 1 in 1024
Output range: 0 V to 5 V
Number of channels: 2
Throughput (software paced)
100 S/s single-channel mode
50 S/s dual-channel mode
Power on and reset voltage: Initializes to 000h code
Maximum voltage
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): 30 mA
Slew rate: 0.14 V/ms typ* 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.

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USB-1208FS-Plus/LS/1408FS-Plus Series
Ordering
Digital I/OPower*

Digital type: 82C55
Number of I/O: 16 (Port A0 through A7, Port B0 through B7)
Configuration: 2 banks of 8.
Pull-up/down configuration: All pins pulled up to Vs through 47 kΩ resistors(default). Positions available for pull down to ground. Hardware-selectablethrough 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
Output high voltage (IOH = –2.5 mA): 3.0 V min
Output low voltage (IOL = 2.5 mA): 0.4 V max

Supply current: 20 mA (total current requirement; includes up to 5 mA forthe 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

External Trigger

USB controller clock error
25 °C: ±30 ppm max
0 °C to 70 °C: ±50 ppm max
Device type: USB 1.1 low-speed mode (1.5 Mbps)
Device compatibility: USB 1.1, 2.0

GeneralTrigger source: External digital, TRIG_IN (protected with a 1.5 kΩ series resistor)
Trigger mode: Level sensitive; software-selectable for TTL level high or low input
Trigger latency: Burst, 25 µs min, 50 µs max
Trigger pulse width: Burst, 40 µs min
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

Environment

Operating temperature: 0 ˚C to 70 ˚C
Storage temperature: –40 ˚C to 70 °C
Relative humidity: 0% to 90% non-condensing
Acquisition data buffer: 4 kS
Signal I/O connector: 2 banks of screw-terminal blocks
Dimensions (L × W × H): 79 × 82 × 27 mm (3.20 × 3.10 × 1.05 in.)Counter

Pin name: CTR
Counter type: Event counter
Number of channels: 1
Input type: TTL, rising edge triggered
Resolution: 32 bits
Maximum input frequency: 1 MHz
High pulse width: 500 ns min
Low pulse width: 500 ns min
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* 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.

Non-Volatile Memory

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

Bus-powered USB hubs and hosts do not have their own power supply.

Order Information

Software also Available from MCC

HardwarePart No.

Description

USB‑1208LS

USB-based data acquisition device with eight
12-bit analog inputs, 1.2 kS/s, two analog
outputs, and 16 digital I/O. Includes USB cableand MCC DAQ software.

USB-1208FS-Plus

USB-based multifunction DAQ device with 8 SE/
4 DIFF analog inputs, up to 12-bit resolution,
50 kS/s, 2 analog outputs, and 16 digital I/O(includes eight high-current lines). Includes USB
cable and MCC DAQ software.

USB-1208FS-Plus-OEM

Board-only USB-based DAQ device with eightanalog inputs, 50 kS/s, up to 12-bit resolution,
50 kS/s, two analog outputs, 16 digital I/O lines(includes eight high-current lines).

USB‑1408FS-Plus

USB-based multifunction DAQ device with 8 SE/
4 DIFF analog inputs, up to 14-bit resolution,
48 kS/s, 2 analog outputs, and 16 digital I/O(includes eight high-current lines). Includes USB
cable and MCC DAQ software.

USB-1408FS-Plus-OEM

Board-only USB-based multifunction DAQ board
with 8 SE/4 DIFF analog inputs, up to 14-bit
resolution, 48 kS/s, 2 analog outputs, and 16
digital I/O (includes eight high-current lines).

Measurement Computing
DS-USB-1208FS-Plus-LS-1408FS-Plus-Series(508) 946-5100

7

TracerDAQ Pro

Out-of-the-box virtual instrument suite with strip
chart, oscilloscope, function generator, and rate
generator – professional version

DASYLabIcon-based data acquisition, graphics, control, andanalysis software

info@mccdaq.com

mccdaq.com
May 2018. Rev 3© Measurement Computing Corporation