User manual

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Features
10 kS/s, 12-bit, 8-ch Multifunction
DAQ USB Module
48 kS/s, 14-bit, 8-ch Multifunction
DAQ USB Module
USB-4702
USB-4704
Introduction
USB-4702/4704 are low-cost USB data acquisition modules. You no longer need to open the chassis to install DAQ modules. Just plug in the module, then get the data. It’s easy
and efficient. Reliable and rugged enough for industrial applications, yet inexpensive enough for home projects, USB-4702/4704 are the perfect way to add measurement and control
capability to any USB capable computer. It obtains all required power from the USB port, so no external power connection is ever required. With the features of USB-4702/4704, they
are your most cost effective choice of lab or production line test & measurement tool.
 Supports USB 2.0
 Portable
 Bus-powered
 8 analog input channels
 12-bit (USB-4702), 14-bit (USB-4704) resolution AI
 Sampling rates up to 10 kS/s (USB-4702), 48 kS/s (USB-4704)
 8-ch DI/8-ch DO, 2-ch AO and one 32-bit counter
Specifications
Analog Input
 Channels 8 single-ended/4 differential (software programmable)
 Resolution USB-4702: Single-ended: 11 bits
Differential: 12 bits
SUB-4704: Single-ended: 13 bits
Differential: 14 bits
 Max. Sampling Rate USB-4702: 10 kS/s max.
USB-4704: 48 kS/s max.
Note: The sampling rate for each channels will be affected by used channel number.
For example, if 4 channels of USB-4702 are used, the sampling rate is 10k/4 = 2.5 kS/s per
channel.
 FIFO Size 512 samples
 Overvoltage Protection 30 Vp-p
 Input Impedance 127 k:
 Sampling Modes Software, onboard programmable pacer, and external
 Input Range (V, software programmable) & Absolute Accuracy
Single Ended ±10 N/A N/A N/A N/A N/A N/A N/A N/A
Differential N/A ±1 ±1.25 ±2 ±2.5 ±4 ±5 ±10 ±20
Absolute
Accuracy
(% of FSR)*
USB-
4702
0.2 0.15 0.15 0.15 0.15 0.15 0.15 0.15 0.15
USB-
4704
0.15 0.1 0.1 0.1 0.1 0.1 0.1 0.15 0.15
*: ±1 LSB is added as the derivative for absolute accuracy
Analog Output
 Channels 2
 Resolution 12 bits
 Output Rate Static update
 Output Range (V, software programmable) 0~5
 Slew Rate 0.7 V/µs
 Driving Capability 5 mA
 Output Impedance 51 :
 Operation Mode Single output
 Accuracy Relative: ±12 LSB
Differential non-linearity: ±5 LSB
Digital Input
 Channels 8
 Compatibility 3.3 V/5 V/TTL
 Input Voltage Logic 0: 0.8 V max.
Logic 1: 2.0 V min.
Digital Output
 Channels 8
 Compatibility 3.3 V/TTL
 Output Voltage Logic 0: 0.4 V max.@ 4 mA (sink)
Logic 1: 3.5 V min.@ 4 mA (source)
Counter
 Channels 1
 Resolution 32 bits
 Compatibility 3.3 V/TTL
 Max. Input Frequency 5 MHz
General
 Bus Type USB 2.0
 I/O Connector USB-4702: 1 x DB37 female connector
USB-4704: Onboard screw terminal
 Dimensions (L x W) USB-4702: 70 x 70 mm (2.76" x 2.76")
USB-4704: 132 x 80 x 32 mm (5.2" x 3.15" x 1.26")
 Power Consumption Typical: 5 V @ 100 mA
Max.: 5 V @ 500 mA
 Operating Temperature 0 ~ 55°C (32 ~ 131°F)
 Storage Temperature -20 ~ 70°C (-4 ~ 158°F)
 Storage Humidity 5 ~ 95% RH non-condensing
Ordering Information
 USB-4702-AE 10 kS/s, 12-bit, 8-ch Multi. USB Module
 USB-4704-AE 48 kS/s, 14-bit, 8-ch Multi. USB Module
Accessories
 PCL-10137-1E DB37 Cable, 1m
 PCL-10137-2E DB37 Cable, 2m
 PCL-10137-3E DB37 Cable, 3m
 ADAM-3937-BE DB37 DIN-rail Wiring Board
 1960004544 Wallmount Bracket
 1960005788 VESA Mount Bracket
USB-4704USB-4702
21-7
DAQ Boards
19
Signal Conditioning
20
Industrial USB I/O
Modules
21