USB-1901/1902/1903
8/16-ch 16-bit 250 kS/s Multi-Function USB DAQ Modules
Features
● USB 2.0 high-speed
● USB bus powered
● 16-ch 250 kS/s voltage input (USB-1901/1902)
● 8-ch 250 kS/s current input (USB-1903)
● 2-ch 1 MS/s voltage output (USB-1902/1903)
● Analog and Digital triggering
● Removable screw terminal on module
● Lockable USB cable for secure connectivity
● Ready-to-use testing application (U-Test) provided
Introduction Standard Shipped Accessories
The ADLINK USB-1900 series provides a range of USB 2.0-based ● One pair of 20-pin removable screw terminals
multi-functional DAQ modules. The USB-1901 and USB-1902 16-bit ● 2m USB Type A to USB Mini-B cable with lockable connector
250 kS/s USB 2.0-based high-performance DAQ modules allow ● Module stand
four different voltage input ranges, while the USB-1903 features ● Rail-mount kit
additional built-in precision current-tovoltage resistors capable of
direct measurement of current signal from 0 to 20 mA.
Optional Accessories
The USB-1900 series is USB bus powered and equipped with
removable screw-down terminals for easy device connectivity. The ● RST-20P
attached multi-functional stand can be used for desktop, rail, or One pair of 20-pin removable
wall mounting. Suitable for mixed-signal tests, laboratory research, screw terminals
and factory automation, the USB-1900 series provide a simple ● USB-2M-L
measurement solution at an affordable price. 2 M USB Type A to USB Mini-B cable
with lockable connector
Supported Operating System
● Windows 7/10, Linux
Pin Assignment
USB-1901/1902 USB-1903
Driver and SDK ECLK
NC
20 40
19 39
AOTG*
AITG
ECLK
NC
20 40
19 39
AOTG
AITG
● LabVIEW, C/C++, Visual Studio.NET, MATLAB NC 18 38 GPI7 NC 18 38 GPI7
GPO3 17 37 GPI6 GPO3 17 37 GPI6
GPO2 16 36 GPI5 GPO2 16 36 GPI5
Software Utility GPO1
GPO0
15 35
14 34
GPI4
GPI3
GPO1
GPO0
15 35
14 34
GPI4
GPI3
● U-Test DGND 13 33 GPI2 DGND 13 33 GPI2
AGND 12 32 GPI1 AGND 12 32 GPI1
*AO1 11 31 GPI0 AO1 11 31 GPI0
Ordering Information *AO0
AGND
10 30
9 29
DGND
AISE
AO0
AGND
10 30
9 29
DGND
AISE
● USB-1901 AI7(AIL3) 8 28 AI15(AIL7) CI3- 8 28 CI7-
AI6(AIH3) 7 27 AI14(AIH7) CI3+ 7 27 CI7+
16-ch 16-bit 250kS/s Analog Input USB DAQ AI5(AIL2) 6 26 AI13(AIL6) CI2- 6 26 CI6-
● USB-1902 AI4(AIH2) 5 25 AI12(AIH6) CI2+ 5 25 CI6+
16-ch 16-bit 250kS/s Multi-Function USB DAQ AI3(AIL1) 4 24 AI11(AIL5) CI1- 4 24 CI5-
AI2 (AIH1) 3 23 AI10(AIH5) CI1+ 3 23 CI5+
● USB-1903
AI1 (AIL0) 2 22 AI9(AIL4) CI0- 2 22 CI4-
8-ch 16-bit Current Input Multi-Function USB DAQ AI0(AIH0) 1 21 AI8(AIH4) CI0+ 1 21 CI4+
* Not available for USB-1901
Specifications
Model Name USB-1901 USB-1902 USB-1903
Analog Input
Resolution 16-bit
Number of channels 16 SE / 8 Pseudo-diff, voltage input 8 Current inputs
Maximum sampling rate
250 kS/s(Multiplexing, channel-gain-queue)
(single channel)
Programmable gain 1, 5, 10, 50 1
Input range (Voltage) ± 10 V, ± 2 V, ± 1 V, ± 200 mV N/A
Input range (Current) N/A 0-20 mA
Offset error ± 0.1 mV (gain=1) ±0.01 mA (typical)
Gain error ± 0.05% of FSR (gain=1) ±0.05% of FSR (typical)
-3dB small signal
600 kHz -
bandwidth (gain=1)
CMRR (gain=1) 90 dB -
SFDR (gain=1) 108 dB -
SINAD (gain=1) 89 dB -
THD (gain=1) 102 dB -
SNR (gain=1) 89 dB -
ENOB (gain=1) 14.5-bit -
FIFO buffer size 4 k samples
Trigger sources Software, external digital, analog trigger ( from one of analog input channels)
Trigger mode Post trigger, delay trigger, retrigger, gate trigger
External conversion source Yes (up to 250 kS/s)
Input coupling DC
Overvoltage protection Continuous ± 24 V
Input impedance High impedance > 1 GΩ 249.5 Ω (input resistor)
Data transfer Programmed I/O, continuous (USB bulk transfer mode)
Analog Output
Number of channels N/A 2 voltage outputs
Resolution - 16-bit
Maximum update rate - 1 MS/s (simultaneous update)
Output range - ± 10 V
Offset error - ± 0.15 mV
Gain error - ± 0.05% of FSR
INL - ≦ 2 LSB
DNL - < 1 LSB
Output driving capacity - ± 5 mA
Slew rate - 2.2 V/μs
Settling time
- 26 μs
(0.1% of Full scale)
Rising time - 6 μs
Falling time - 6 μs
FIFO - 10 k samples (2-ch sharing)
Output mode - Programmed I/O, continuous (USB bulk transfer mode)
Function I/O
Mode* Digital I/O, general timer/counter, pulse generation
Digital I/O 8 DI / 4 DO (TTL level)
General timer/counter Two 32-bit, base clock: 80 MHz, external to 10 MHz
Pulse generation Two PWM outputs (Modulation frequency: 0.01 Hz to 5 MHz; Duty cycle: 1%-99%)
General Specifications
Interface USB 2.0 high speed, mini-USB connector
I/O connector Two 20-pin screw terminals
Operating temperature 0 to 55°C (32˚F to 131˚F)
Storage temperature -20 to 70°C (-4˚F to 158˚F)
Relative humidity 5 to 95% non-condensing
Power requirements 5V@400 mA (USB bus powered)
114 mm (H) x 156.5 mm (L) x 41.3 mm (W) (4.5” x 6.16” x 1.63”)
Dimensions
(without connector and stand)
Note: The function I/O share the same I/O pins. Only one of these modes can be selected.
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Updated Dec. 17, 2019. ©2019 ADLINK Technology, Inc. All Rights Reserved.
All specifications are subject to change without further notice.
