CoolGear USB-COM-Si-M User manual

Single Port RS-232 USB
Serial Adapter – Optical-
ISO – Surge Protection
Product Manual
Coolgear, Inc.
Version 1.1
March 2018
Model Number: USB-COM-Si-M
www.coolgear.com

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Revision History
Revision Date Author Comments
1.1 03/26/2018 Coolgear New Manual
About this document
This product manual outlines installation and features of the USB-COM-SI-M Single Port
RS-232 USB Serial Adapter – Optical-ISO – Surge Protection.
Scope
The scope of this manual is to give the user of the product an understanding of its use
with detailed diagrams and verbiage. The manual allows the users to apply the product
to their application.
Intended Audience
This product is intended for use in numerous industries including but not limited to
applications such as; connectivity with modems, ISDN TAs, PDAs, handheld & pocket
PCs, digital cameras, POS, serial printers, remote access and other RS-232 Serial
communications.
Product Support
[email protected]

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Table of Contents
1. Introduction.........................................................................................................4
1.1 Features .................................................................................................................. 4
1.2 Optical Isolation and Surge Protection................................................................... 4
1.3 Power Requirement................................................................................................ 5
2. Windows 7 / Vista / 2003 / XP / 2000 Driver Installation.......................................6
3. Check Installation.................................................................................................7
3.1 Change COM Port Properties & COM Port Number............................................... 7
3.2 Uninstalling Windows 2003 / XP / 2000 Drivers..................................................... 7
4. Uninstalling Windows 7 or Vista Drivers .............................................................10
5. RS-232 Signal Pin-outs of DB-9 Male ...................................................................13
6. Notes, Tips, and Warnings ..................................................................................14
7. Supporting References .......................................................................................16
Table of Figures
Figure 1 – Driver Installation………….…..…….……………………………………………………………….…..6
Figure 2, 3, 4, 5 – Uninstalling 2003/XP/2000 Windows Drivers..….……………………..….….…8
Figure 6, 7 – Uninstall 2003 / XP / 2000 Drivers...……………….…………..…………………..………..9
Figure 8, 9 – Uninstall Win7 or Vista Drivers……………………….……………………..…………..……10
Figure 10, 11, 12 – Uninstall Win7 or Vista Drivers.…………………………………………………11-12
Figure 13 – DB-9 Pin-out Diagram..………………………………………………………………………………13

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1. Introduction
The USB-COM-SI-M USB to Serial Adapter is designed to make serial port expansion
quick and simple. The USB Serial Adapter provides instant connectivity to RS-232
communication device for factory automation equipment, multi-drop data collection
devices, barcode readers, time clocks, scales, data entry terminal and serial
communication in harsh environment. The USB to Serial Adapter is suitable for remote
access, retail and industrial application, data collection and other applications requiring
high speed RS-232 communication ports.
WEIGHT 0.3 lbs
DIMENSIONS 2.83(L) x 2.29(W)(3.20in with ears) x .895in(H)
CABLE LENGTH 3ft.
UPC 729440690731
WARRANTY 1 year from date of purchase
COLOR Black
PORTS (1) DB-9 Male Serial Port / (1) USB Type-B Female Port
1.1 Features
•TAA Compliant
•2000V DC optical isolation.
•25KV ESD surge protection.
•Industrial metal housing with DIN rail
bracket.
•Full RS-232 modem control signals and
hardware/software flow control
•Windows 98, Me, XP, 2000, 2003, CE,
Vista, Windows 7, and Windows 8
•
Linux, Mac OS 10.X
•Baud Rate from 300bps up to
921.6Kbps supported.
•128 byte transmit FIFO & 384 byte
receive FIFO.
•Transmit (TxD) and Receive(RxD) LEDS
on unit for visual reference.
•Universal Serial Bus(USB) port offers
easy plug and Play Operation.
1.2 Optical Isolation and Surge Protection
Each RS-422/485 port is individually optically isolated with 2000 Volt DC optical
isolation. The optical isolation protects your PC or notebook from spikes and surges on
the RS-422/485 network, by converting the electrical pulse into an optical signal and
then changing it back into an electrical pulse. Your computer is well protected, since the

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surges and spikes cannot cross the optical link. Each RS-422/485 port is individually
protected by surge protector to withstand electrostatic discharge and power surges up
to 25KV ESD. Surge suppression on all signals prevent from damages caused by lightning
or high voltage.
1.3 Power Requirement
If your USB to Serial Adapter is provided with external power adapter, you need to plug
the power adapter to the power source after driver installation.

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2. Windows 7 / Vista / 2003 / XP / 2000 Driver Installation
You need to have administrator privileges to install any new drivers under Windows 7/
Vista / 2003 / XP / 2000. To install the driver or update the configuration please log onto
Windows as "Administrator" or ask your system administrator to install the USB-COM
driver.
Note: You need to install driver first, prior to hardware installation. Do not connect the
USB-to-Serial Adapter to the USB port of your computer, before you finish driver
installation.
Please proceed with the following steps to install the driver:
1. Insert the “USB COM Series Driver and Utility” CD into your CD-ROM.
2. The “USB COM Series Driver and Utility CD” dialog box appears.
3. Under “Driver Installation”, double click “Windows 7, Vista, 2003, XP, 2000
driver” to install the device driver.
4. The USB COM install program will auto-detect the OS type and install the driver
automatically. (Note: in Windows 7 or Vista OS you will find another dialog box,
please click on “OK” to confirm the drivers install program).
Figure 1
5. After the message “FTDI CDM Driver installation process completed” appears,
press “Enter” to complete the driver installation.
6. Plug in the USB to Serial Adapter to the USB port of your computer. Windows
will finish installing the driver files.

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3. Check Installation
You can now verify the installation has been completed successfully by looking under
Device Manager of the System Properties screen. (Go there by Start-Setting- Control
Panel-System Properties-Hardware-Device Manager.
The device should have installed as a "USB Serial Port (COMx)" attached to "USB Serial
Converter (A/B or A/B/C/D)".
3.1 Change COM Port Properties & COM Port Number
This feature is particularly useful for programs, such as HyperTerminal, which only work
with COM1 through COM4. Please ensure that you do not change the COM Port
Number already in use.
To change the virtual COM port properties:
•Select the "USB Serial Port"
•Click “Properties”.
•Select "Port Setting" and “Advanced”.
•Click the drop down arrow on COM Port Number and scroll to the required COM
port. Select "OK".
•Return to the Device Manager Screen. You will see that the USB Serial Port
installation has been changed to the new COM Port Number.
3.2 Uninstalling Windows 2003 / XP / 2000 Drivers
Please proceed with the following steps to uninstall the 2003/XP/2000 driver:
1. Insert the “USB COM Series Driver and Utility” CD into your CD-ROM.
2. The “USB COM Series Driver and Utility CD” dialog box appears.
3. Under “Driver Uninstalling”, double click “Windows 2003, XP, 2000 driver
uninstall” to uninstall the device driver.
4. When following dialog box appears, double click “Clean System” to uninstall the
2003/XP/2000 drivers.

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Figure 2
5. You need to disconnect all USB to Serial Adapters from your PC, when the
message below appears. Double click “OK” to start uninstalling Windows
2003/XP/2000 USB to Serial drivers.
Figure 3
6. Double click “Yes” to confirm it.
Figure 4
7. Click “No” to proceed.
Figure 5

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8. When the message “Status: System clean completed” appears, double click
“Exit” to complete the USB to serial drivers uninstall.
Figure 6
9. Press “Start” button and select “Control Panel”.
10. Open the Add or Remove program.
Figure 7
11. Remove the first “Windows Driver Package – FTDI CDM Driver Package (…)”.
12. Click “Change/Remove” and “Yes” to remove the first Windows Driver Package.
13. Remove the second “Windows Driver Package – FTDI CDM Driver Package (…)”.
14. Click “Change/Remove” and “Yes” to remove the second Windows Driver
Package.
15. Reboot the computer to complete the driver uninstall.

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4. Uninstalling Windows 7 or Vista Drivers
Windows 7 and Vista have many new security features. You need to proceed with the
following steps to uninstall the Vista driver:
1. The USB to serial devices must connect to the PC.
2. Press “Start” button and select “Control Panel”.
3. Select “Classic View” from the top left hand corner and then “System” from the
list.
4. Select “Device Manager” from the top left hand corner.
Figure 8
5. Locate your device under the ports (COM & LPT) section and right click on it to
bring up the menu shown.
Figure 9

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6. Select uninstall and be sure to click the box for “Delete the driver software for
this device” in the next window and press “OK”.
Figure 10
Note: if you have more than one USB Serial Port (COMx) installed in your PC, you need
to repeat from step 5 to step 6 to delete the driver software for each port.
7. Locate your Device under the Universal Serial Bus Controllers section, and right
click on it to bring up the menu shown.
Figure 11

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8. Select uninstall and be sure to click the box for “Delete the driver software for
this device” in the next window and press “OK”.
Figure 12
Note: if you have more than one USB Serial Converter installed in your PC, you need to
repeat step 7 and step 8 to delete the driver software for all devices.

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5. RS-232 Signal Pin-outs of DB-9 Male
Figure 13
Pin 1 DCD
Pin 2 RxD
Pin 3 TxD
Pin 4 DTR
Pin 5 GND
Pin 6 DSR
Pin 7 RTS
Pin 8 CTS
Pin 9 RI

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6. Notes, Tips, and Warnings
Note
Note: Sometimes, when operating in RS-422 or RS-485, it is necessary to
configure termination and biasing of the data transmission lines. Generally
this must be done in the cabling, since this depends on the installation of
connections. Before applying the option, check your cable specification for
proper impedance matching.
Biasing of data lines must only occur at a single point anywhere in the
cabling. USB-2COMi-SI-M provides biasing for ease of installation. Please be
sure to disable this inside the unit, if your cabling already provides biasing.
Termination must not be installed in the middle of the cable. It is only
permitted at both ends. Since a computer controlled serial port is almost
always at one end of the cable, termination is enabled by default.
Reference section 2.1
Note: if you have more than one USB Serial Port (COMx) installed in your PC,
you need to repeat from step 5 to step 6 to delete the driver software for
each port.
Reference section 5, step 6
Note: if you have more than one USB Serial Converter installed in your PC,
you need to repeat step 7 and step 8 to delete the driver software for all
devices.
Reference section 5, step 8
Tip N/A
Warning N/A
Safety
•Read the entire Product Manual before implementing this product for
your application. This manual contains important information about

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electrical connections that must be followed for safe and proper
operation.
•Inspect the product closely for visual defects before putting it to use.
•Keep away from areas where moisture builds, this product contains
electrical components that can be damaged by moisture build up, this
can adversely affect your equipment connected to it.
•Do not disassemble the product. Handling the product’s internal
components can expose it to ESD (Electro-Static Discharge) hazards
that can affect the function of the device.
•If this product is not functioning properly, email our support team at
[email protected].

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7. Supporting References
Document Link
Website Product Page https://www.coolgear.com/product/2-port-usb-to-rs-422-
485-optical-isolated-adapter
© 2017 Coolgear, Inc. All Rights Reserved. All products and accompanying digital documentation including images are the property
and / or trademarks of Coolgear Inc. Coolgear Inc. are continuously improving upon its products. Product specifications are subject
to change without notice.