Extron electronics SW USB Series User manual

User Guide
SW USB Series
Switchers
USB Switchers
68-1517-01 Rev.G
06 21

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Copyright
© 2008-2021 Extron. All rights reserved. www.extron.com
Trademarks
All trademarks mentioned in this guide are the properties of their respective owners.
The following registered trademarks (®), registered service marks (SM), and trademarks (TM) are the property of RGBSystems, Inc. or Extron (see the
current list of trademarks on the Terms of Use page at www.extron.com):
Registered Trademarks (®)
Extron, Cable Cubby, ControlScript, CrossPoint, DTP, eBUS, EDID Manager, EDID Minder, eLink, Flat Field, FlexOS, Glitch Free, GlobalConfigurator,
GlobalScripter, GlobalViewer, Hideaway, HyperLane, IPIntercom, IPLink, KeyMinder, LinkLicense, LockIt, MediaLink, MediaPort, NAV,
NetPA, PlenumVault, PoleVault, PowerCage, PURE3, Quantum, ShareLink, Show Me, SoundField, SpeedMount, SpeedSwitch, StudioStation,
SystemINTEGRATOR, TeamWork, TouchLink, V-Lock, VideoLounge, VN-Matrix, VoiceLift, WallVault, WindoWall, XPA, XTP, XTPSystems, and ZipClip
Registered Service Mark(SM) : S3 Service Support Solutions
Trademarks (™)
AAP, AFL (Accu-RATEFrameLock), ADSP(Advanced Digital Sync Processing), AVEdge, CableCover, CDRS(ClassD Ripple Suppression),
CodecConnect, DDSP(Digital Display Sync Processing), DMI (DynamicMotionInterpolation), DriverConfigurator, DSPConfigurator, DSVP(Digital
Sync Validation Processing), EQIP, Everlast, FastBite, Flex55, FOX, FOXBOX, IP Intercom HelpDesk, MAAP, MicroDigital, Opti-Torque,
PendantConnect, ProDSP, QS-FPC(QuickSwitch Front Panel Controller), RoomAgent, Scope-Trigger, SIS, SimpleInstructionSet, Skew-Free,
SpeedNav, Triple-Action Switching, True4K, True8K, Vector™ 4K, WebShare, XTRA, and ZipCaddy

FCC Class A Notice
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part15 of the FCC rules. The ClassA limits provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and,
if not installed and used in accordance with the instruction manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is
likely to cause interference. This interference must be corrected at the expense of the user.
NOTE: For more information on safety guidelines, regulatory compliances, EMI/EMF
compatibility, accessibility, and related topics, see the Extron Safety and Regulatory
Compliance Guide on the Extron website.
VCCI-A Notice

Conventions Used in this Guide
Notifications
The following notifications are used in this guide:
WARNING: Potential risk of severe injury or death.
AVERTISSEMENT : Risque potentiel de blessure grave ou de mort.
CAUTION: Risk of minor personal injury.
ATTENTION : Risque de blessuremineure.
ATTENTION:
•Risk of property damage.
•Risque de dommages matériels.
NOTE: A note draws attention to important information.
Software Commands
Commands are written in the fonts shown here:
^AR Merge Scene,,0p1 scene 1,1 ^B 51 ^W^C.0
[01] R 0004 00300 00400 00800 00600 [02] 35 [17] [03]
E X! *X1&*X2)*X2#*X2! CE}
NOTE: For commands and examples of computer or device responses used in this
guide, the character “0” is the number zero and “O” is the capital letter “o.”
Computer responses and directory paths that do not have variables are written in the font
shown here:
Reply from 208.132.180.48: bytes=32 times=2ms TTL=32
C:\Program Files\Extron
Variables are written in slanted form as shown here:
ping xxx.xxx.xxx.xxx —t
SOH R Data STX Command ETB ETX
Selectable items, such as menu names, menu options, buttons, tabs, and field names are
written in the font shown here:
From the File menu, select New.
Click the OK button.
Specifications Availability
Product specifications are available on the Extron website, www.extron.com.
Extron Glossary of Terms
A glossary of terms is available at https://www.extron.com/technology/glossary.aspx.

SW USB Series • Contents v
Contents
Introduction ................................................ 1
About this Guide.................................................. 1
About the SW USB Series ................................... 1
Features .............................................................. 1
USB System Architecture .................................... 2
Application Diagrams........................................... 4
Installation .................................................. 6
Rear Panel Features ............................................ 7
Wiring the Power Connector................................ 8
Wiring for RS-232 Communication .................... 11
RS-232 Port .................................................. 11
RS-232 Pass Thru Port.................................. 11
Setting Up Contact Closure Control................... 12
Controlling an Extron AV Switcher.................. 12
Connecting Multiple SW USBs in a System ....... 13
Operation.................................................. 15
Front Panel Features.......................................... 15
Operations........................................................ 16
Powering on the System................................ 16
Selecting an Input.......................................... 16
Issuing Commands to an Extron AV
Switcher via the RS-232 Pass Thru Port ....... 17
Locking and Unlocking the Front Panel
(Executive Mode) .......................................... 20
Resetting ....................................................... 20
Host Emulation (SW4 USB Plus Only) ............ 20
Troubleshooting ............................................. 21
Peripheral Emulation (SW4 USB Plus Only) .... 22
Updating Firmware ............................................ 22
SIS Programming and Control ................... 27
Host-to-Switcher Communication...................... 27
Switcher-initiated Messages .......................... 27
Error Responses............................................ 28
Using the Command and Response Table......... 28
Command and Response Table for SIS
Commands ...................................................... 29
Reference Information............................... 31

SW USB Series • Contents vi

SW USB Series • Introduction 1
Introduction
This section gives an overview of the Extron SW USB Series switchers. Topics include:
• About this Guide
• About the SW USB Series
• Features
• USB System Architecture
• Application Diagrams
About this Guide
This guide describes the Extron SW2 USB, SW4 USB, and SW4 USB Plus switchers and
provides instructions on installing, configuring, and operating them. The terms “SW USB”
and “switcher” are used throughout this guide to refer to all models.
About the SW USB Series
The SW USB Series switchers make it possible for two or four host computers to share and
switch among up to four peripheral USB devices such as mass storage devices, keyboards,
mice, and other human interface devices (HIDs). They function as USB hubs with switching
and device emulation, so that connections are maintained between host computers and
peripherals.
Features
A number of specialized features help to streamline system integration, including port status
indication, RS-232 pass-through, front panel security lockout, and multiple control points.
• Outputs — Four female USB type A connectors act as a USB hub. Each port supplies
the 500 mA, 5 V rating required in the USB specification.
• USB 2.0 compatibility — The SW USB switchers are backward compatible with
all previous USB data rate standards, including low speed (1.5 Mbps), full speed
(12 Mbps), and high speed (480 Mbps).
• Mounting — The SW USB Series switchers have compact 1U high, half-rack wide,
3 inches (7.6 cm) deep metal enclosures that can be mounted on a rack shelf or under
or through furniture.
• Host and peripheral emulation — The SW4 USB Plus model provides increased
system reliability by enabling an uninterrupted connection between host and peripheral
devices.
• Host emulation: When a keyboard or a mouse is connected to port 3 or 4 and
the appropriate rear panel DIP switch is set to On, the SW USB switches to the
connected keyboard or mouse instantly (see Host emulation (SW4 USB Plus
only) on page20 for more information).
• Peripheral emulation: The SW USB provides problem-free boot-up by constantly
emulating a keyboard and mouse to the computer or another input device,
regardless of whether or not a keyboard or mouse is actually connected.

SW USB Series • Introduction 2
• Power supply — An external power supply provides worldwide compatibility.
• RS-232 control and pass-through — The SW USB switcher can be controlled by
Simple Instruction Set (SIS) commands received via an RS-232 interface. These SIS
commands can be sent to an RS-232 controllable Extron AV switcher attached to the
SW USB RS-232 Pass Thru port (see SIS Programming and Control starting on
page27, for an explanation of the available SIS commands).
• Contact closure control — Connecting a push-button contact closure device to the
SW USB Contact port or shorting pin 1, 2, 3, or 4 to the ground (_) pin of the Contact
port provides an alternative method of input selection on the SW USB. Commands
issued via contact closure can also be passed through the RS-232 Pass Thru port to
an attached RS-232 controllable Extron switcher (see Setting Up Contact Closure
Control on page12 for more information).
• Hot key switching — (SW4 USB Plus only) When host emulation is enabled, inputs
can be selected by a combination of key presses on a keyboard connected to port 3 or
4.
• Front panel security lockout (executive mode) — To prevent unauthorized access
to the switchers, front panel lock mode can be enabled via front panel controls or SIS
commands to disable all front panel controls.
• Port status LEDs — The Active USB LEDs provide visual indication of port status and
activity for USB peripherals and all connected and active host devices.
USB System Architecture
A USB system architecture refers to the physical bus topology of USB devices connected
to a host device. USB devices include USB hubs, USB peripheral devices, or compound
devices (devices with a combination of USB hubs and USB peripheral devices built into it).
The system is organized in a tiered star topology to prevent multiple or circular attachments
to the bus. Each tier represents a degree of separation from the host device. Per USB
specifications, there are seven supported tiers, starting with the host device (or root hub)
occupying the first tier.
NOTE: Do not connect more than five daisy-chained hubs to the root hub. The
architecture does not support peripheral devices connected to USB hubs occupying
the seventh tier.