UPort 1250/UPort 1250I

2-port RS-232/422/485 USB-to-serial converters with optional 2 kV isolation

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Features and Benefits 

  • Hi-Speed USB 2.0 for up to 480 Mbps USB transmission
  • 921.6 kbps maximum baudrate for super fast data transmission
  • 128-byte FIFO and on-chip H/W, S/W flow control
  • 15N high retention type B connector
  • Supports fixed-base COM Utility for setting the initial extended COM port number
  • Drivers provided for Windows, WinCE, and Linux
  • LEDs for easy monitoring
  • Locking power jack

Overview

The UPort® 1250/1250I USB-to-serial converters allow you to connect 2 RS-232/422/485 devices to your laptop or workstation through the USB (Universal Serial Bus) port. These plug & play USB solutions are perfect for mobile, instrumentation, and point-of sale applications.

 

Typical Application—Connecting Instruments in a Medical Lab

In medical labs, research scientists typically collect large quantities of data from many samples using a variety of different instruments. Most research devices have parameters that can be accessed via a serial port for convenient reconfiguration. Laptops are often used as convenient and space-efficient computing solutions in medical labs, but most modern laptops no longer offer serial ports and only come equipped with USB ports. This presents a connectivity issue unless the USB ports can be expanded into serial ports.
Moxa’s solution is the UPort® 1250, which is an RS-232/422/485 USB-to-serial converter that can be used to connect 2 serial interface instruments to a computer’s USB port, and is particularly convenient for medical researchers since advanced technical expertise is not required. The UPort® 1250 has the following features:

  • 2 serial ports for easy USB-to-serial expansion
  • True USB 2.0 high-speed transmission
  • 128-byte FIFO and on-chip hardware and software flow control to ensure stable data transmission
  • Easy troubleshooting with LED indicators for each serial port
  • Compatible with both laptops and desktop PCs

Dimensions

USB Interface
Compliance USB 1.1/2.0 compliant
Connector USB Type B
Speed 480 Mbps (Hi-Speed USB) and 12 Mbps (Full-Speed USB)
Serial Interface
Number of Ports 2
Serial Standards RS-232/422/485
Connector DB9 male
Electrical Isolation 2 kV (UPort 1250I only)
Performance
Baudrate 50 bps to 921.6 kbps (including 500 kbps)
Serial Communication Parameters
Data Bits 5, 6, 7, 8
Stop Bits 1, 1.5, 2
Parity None, Even, Odd, Space, Mark
Flow Control RTS/CTS, XON/XOFF
FIFO 128 bytes
Serial Signals
RS-232 TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
RS-422 TxD+(B), TxD-(A), RxD+(B), RxD-(A), GND
RS-485-4w TxD+(B), TxD-(A), RxD+(B), RxD-(A), GND
RS-485-2w Data+(B), Data-(A), GND
RS-485 Data Direction ADDC® (Automatic Data Direction Control)
Operating Systems
Windows Real COM Drivers Windows 2000, Windows XP/2003/Vista/2008/7/8/8.1/10 (x86/x64), Windows 2012 (x64), Windows Embedded CE 5.0/6.0
Linux Real TTY Drivers Linux 2.4.x, 2.6.x, 3.x
Android Driver Android 3.1.x and later 
Note: Please refer to Moxa’s website for the latest driver support information.
Physical Characteristics
Housing SECC sheet metal (1 mm)
Weight Product only: 180 g (0.40 lb)
Packaged:
UPort 1250: 370 g (0.82 lb)
UPort 1250I: 680 g (1.5 lb)
Dimensions 77 x 26 x 111 mm (3.03 x 1.02 x 4.37 in)
Environmental Limits
Operating Temperature 0 to 55°C (32 to 131°F)
Storage Temperature -20 to 75°C (-4 to 167°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Standards and Certifications
Safety UL 60950-1
EMC EN 55022/24
EMI CISPR 22, FCC Part 15B Class A
EMS IEC 61000-4-2 ESD: Contact: 4 kV; Air: 8 kV
IEC 61000-4-3 RS: 80 MHz to 1 GHz: 3 V/m
IEC 61000-4-4 EFT: Power: 1 kV
IEC 61000-4-5 Surge: Power: 1 kV
IEC 61000-4-6 CS: 150 kHz to 80 MHz: 3 V/m
IEC 61000-4-8 PFMF
Green Product RoHS, CRoHS, WEEE
Power Requirements
Input Voltage UPort 1250: 5 VDC
UPort 1250I: 12 to 48 VDC
Input Current UPort 1250: 360 mA @ 5 VDC
UPort 1250I: 200 mA @ 12 VDC
MTBF (mean time between failures)
Time 563,179 hrs
Standard Telcordia (Bellcore), GB
Warranty
Warranty Period 5 years
Details See www.moxa.com/warranty

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Available Models

  Model No. Description
UPort 1250 USB to 2-port RS-232/422/485 Serial Hub
UPort 1250I USB to 2-port RS-232/422/485 Serial Hub with 2 KV Isolation Protection

Optional Accessories

Mounting Kits
  Model No. Description
DK35A DIN-Rail Mounting Kit (35 mm)
Connectors
  Model No. Description
Mini DB9F-to-TB DB9 Female to Terminal Block connector