Datasheet
7
Features
• Easy connection from standard
USB port on your PC to up to four
RS-232 instruments or devices
• Fully compatible with Windows
COM driver and industry-standard
VISA I/O software
Best for
• Easy connection to RS-232 devices
• RS-232 connection to a notebook
computer
Add four serial ports within
minutes
The Agilent E5805A USB/4-port RS-232
interface provides a direct connection from
the USB port on your notebook or desktop
PC to up to four RS-232 instruments or
devices. There are no switches to set, no
PC cards to install, and no external power
supplies are required. Simply install the
driver and plug in the E5805A USB 4-port
RS-232 interface to add four RS-232 ports
to your computer.
The E5805A is a standard plug-and-play
device. Your computer automatically
detects and confi gures it when it is
connected to the USB port of the computer.
You can interface up to four devices, with
baud rates of up to 230 Kb/s per serial
port. The E5805A provides four DB9 serial
connectors and ships with a 1.8-meter USB
cable.
E5805A Technical Specifi cations
General Requirements
Minimum system requirements • Windows XP
A USB port
Software required E5805A driver (included)
Software recommended Agilent connectivity Libraries Suite (included);
see system requirements on page 2
Supported standards USB 1.1 (fully compatible with USB 2.0)
EIA-232
General Characteristics
Power USB bus-powered device, +5 V, 500 mA (max), 200 mA (typ)
Support for USB hubs Self-powered hubs
Connectors Standard USB A, RS-232 (9-pin) on each port
Cable 1.8 meter USB, USB A (host side) to USB B (device side)
Maximum data rates 230 Kb/s per port
RS-232 baud rates 300, 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400 b/s
RS-232 fl ow control None, RTS/CTS, XON/XOFF, DTR/DSR
RS-232 parity None, Odd, Even, Space, Mark
RS-232 bits 5, 6, 7, 8
RS-232 stop bits 1, 2
RS-232 SRQ interrupts on RI, DSR, DCD, CTS (using connectivity libraries)
Maximum instrument
connections
4 RS-232 instruments/devices
Confi guration Plug-and-play
Indicators Tri-state LED displays device status and COM port activity
EMC and safety * CISPR 22 Class B
CISPR 24
IEC 60950
Warranty 1 year
Dimensions
Length, width, and height 111 mm (L) x 183 mm (W) x 26 mm (H)
Weight 0.311 kg
Environmental Specifi cations
Operating environment 0 °C to 55 °C
Operating humidity Up to 90% at 40 °C non-condensing
Storage environment –40 °C to +70 °C
Storage humidity Up to 90% at 65 °C non-condensing
* Additional detail and information in the Declaration of Conformity
Agilent E5805A USB/4-Port RS232 Interface
Turn your USB port into
4 additional RS-232 ports










