USG-1-485 USG to RS485 Gateway
The USG-1-485 is no longer in production.
The Actisense™ USG-1-485 interface is an easy, safe and low-cost method of connecting an industry standard RS485 / IEC 61162-2 half-duplex system to a USB equipped PC.
The Actisense™ USG-1-485 interface is an easy, safe and low-cost method of connecting an industry standard RS485 / IEC 61162-2 half-duplex system to a USB equipped PC. Whilst protecting the most vital and expensive devices in the RS485 system, it also creates a virtual serial port that allows connection to an RS485 industrial bus link.

Total galvanic isolation is assured using the Actisense opto-isolated ISO-Drive transceiver circuitry.

The ISO-Drive transceiver offers total galvanic isolation from the input and can "float" safely up to 1500 VDC from ground. Its sophisticated circuitry is 100% compatible with industrial RS485 ports.

The USG-1 provides comprehensive isolation of the expensive PC hardware when connecting to an RS485 bus that may have picked up potentially hazardous voltages around the electrically noisy environment of a vessel or factory, and makes installation simple due to the isolation of the PC ground from the RS485 data network ground, often the biggest cause of data errors and one of the biggest safety hazards in any electronic installation.

No external power supply is required as the cable takes all necessary power from the USB port. Simple installation using plug & play USB drivers supplied on CD allows the PC to start sending and receiving data to the RS485 half-duplex data network within minutes of installation.
Geek Mode

Technical Specification

Supply voltage From USB port 4.75 5.25 V
Supply current (drawn from USB port)

Supply voltage 5v (no load)

Supply voltage 5v (output shorted)

40

75

46

80

mA

mA

RS485 Transceiver I/O        
Input voltage tolerance

Continuous operation

Short term operation (< 1 sec)

-0.5

-8

+12.5

+35

V

V

Differential input voltage Required level for data to be detected -0.2 0.2 V
Input current     1.0 mA
Differential Output Voltage Continuous Operation 0.0 +5.0 V
  Max. 100 ohm load 2.1 - V
Output current (Max) Max. 100 ohm load - 21 mA
Output current (Short)   50 55 mA
Galvanic isolation Between input & output - 1500 V
Static Discharge   - 15000 V
PC Comm settings        
Baud rate Set in PC software Comm port settings 300 115200 bps
General        
Ambient temperature   -20 +70 °C
Guarantee Actisense guarantee   3 Years 
USG-1-485 USG to RS485 Gateway
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Testimonial
"We have been working with Actisense for more than 9 years now. Our sales in terms of units raise to a 4 digit figure. As far as I can remember, we have returned just one NMEA Buffer back to the manufacturer under warranty. That says it all."
Alberto Olmos, Sales Director, Aage Hempel Crame
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