ICOM IC-7610 ICOM Tips for USB Port Settings - Rev

Version 1.0

March 2016

Reference MANUAL

Tips for the USB port settings

RMX-USB_PORT_SETTING-ENG-V1.0

TIPS FOR THE USB PORT SETTINGS

PREFACE

Until recently, it has been necessary to change your PC data output to fit your transceiver’s specifications
when you operate RTTY. This is because the transceiver does not directly accept signals output from the
PC’s COM port. Therefore, you needed to use an interface unit between the transceiver and your PC. The
interface unit adjusted the signals levels or signal format.

Now, certain Icom transceivers have built-in RTTY mode. You can simply operate the modes with only your
Icom transceiver itself. However, some users operate those modes with their PC connected through a USB
cable to synchronize with other software applications.

To connect between your Icom transceiver and PC through a USB cable, you do not need to think of signal
level or signal format, and you do not need an interface unit to connect both units. Therefore, the connection
becomes very simple.

The USB port is used not only for RTTY and logging software operation, but also to remotely control the
transceiver from a PC using the CI-V commands, to enter content into memory and to make settings using
optional Icom cloning software.

This document describes certain USB port settings.
The applicable transceivers described in this document are as follows. (As of March 2016)

• IC-7100

• IC-7300

• IC-7850/IC-7851 (Referred to as the IC-7851)

• IC-9100
Note that a USB driver installation is required to connect the above transceivers to your PC.

The USB driver for Microsoft
http://www.icom.co.jp/world/support/download/firm/

Refer to your transceiver’s instruction manual for details on downloading the USB driver, and refer to the
USB driver installation guide about installing the driver.

This document describes only the concept of PC or network settings. Refer to your PC or software manual,
or contact to their respective support center about the PC, software, or network settings. Please note that
Icom cannot provide support for your PC, software, network or their proper settings

Guide Revisions
Icom reserves the right to make changes to the content of this guide at any time without notice or obligation.

Trademarks/Copyright
Icom, Icom Inc. and the Icom logo are registered trademarks of Icom Incorporated (Japan) in Japan, the
United States, the United Kingdom, Germany, France, Spain, Russia, Australia, New Zealand, and/or other
countries. Microsoft and Windows are either registered trademarks or trademarks of Microsoft Corporation in
the United States and/or other countries. All other trademarks are the properties of their respective holders.

®

Windows® PC can be downloaded from our website at:

© 2016 Icom Inc.

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TABLE OF CONTENTS

TIPS FOR THE USB PORT SETTINGS

SECTION 1

SECTION 2 ABOUT LINK SETTING FOR BETWEEN USB PORT AND REMOTE JACK ..................... 6

SECTION 3 WHY TWO VIRTUAL COM PORTS ARE RECOGNIZED ON ONE PHYSICAL

ABOUT “DTR” AND “RTS” .................................................................................................. 4

USB PORT ............................................................................................................................. 7

3-1 How to check the internal circuit for each COM port ................................................... 8

3-2 How to change the COM port number ....................................................................... 10

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TIPS FOR THE USB PORT SETTINGS

SECTION 1 ABOUT “DTR” AND “RTS”

Applicable products: IC-7300, IC-7851 (as of March 2016)

When connecting the above Icom amateur base transceivers to a PC using a USB cable, and operating an
RTTY or logging software application, set either the “DTR” or “RTS” items in the transceiver Set mode
settings of “USB SEND,” “USB Keying (CW),” and “USB Keying (RTTY).”

This section describes how to set these items.

Figure 1-1 Set mode screen for IC-7300 Figure 1-2 Set mode screen for IC-7851

DTR stands for Data Terminal Ready, and RTS stands for
Request To Send. They originated from the RS-232C standard,
which is a unified standard for the control signal line.

The SEND and CW/RTTY keying signals from the PC through the
DTR and RTS terminals of the RS-232C port or the sound card
are applied to the ACC socket on the transceiver. On some
transceivers with an RS-232C port, these signals are directly
applied from the DTR and RTS terminals on the PC’s RS-232C
port through an RS-232C cable.

DTR

GND

RI

CTS

Figure 1-3 RS-232C connector pin

assignment (DB9)

TXD

23

45

9

(Front view)

678

1

TX

Software
operation

Output signals
to the RS-232C
connector

RX

Mark

Space

RTS

DTR

(Used for the transceiver’s

transmit and receive switching.)

*When SEND is assigned to the

RTS, and RTTY keying is assigned
to the DTR terminals.

RXD

DCD

DSR

RTS

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