HRT SW-VRS232-2 Manuale utente
Model SW-VRS232-2
2-PC video and Serial Switch
With Local and Remote User Stations
For technical support, Call 714-641-6607 or fax 714-641-6698
Order by phone: toll-free in the U.S. 800-959-6439
Web site: www.hallresearch.com
Hall Research Technologies, 1163 Warner Ave. Tustin, CA 92780
SUPPORT &
ORDERING
INFORMATION
UMA1162 Rev. A
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1
Model SW-VRS232
TRADEMARKS USED IN THIS MANUAL
Hall Research, HRT, and are trademarks of Hall Research
Technologies Inc.
Any other trademarks mentioned in this manual are acknowledged to be the
property of the trademark owners.
FEDERAL COMMUNICATIONS COMMISSION
RADIO FREQUENCY INTERFERENCE
STATEMENT
This equipment generates, uses, and can radiate radio frequency energy and if
not installed and used properly, that is, in strict accordance with the
manufacturer’s instructions, may cause interference to radio communication. It
has been designed to comply with the limits for a Class A computing device in
accordance with the specifications in Subpart B of Part 15 of FCC rules, which
are designed to provide reasonable protection against such interference when
the equipment is operated in a commercial environment. Operation of this
equipment in a residential area is likely to cause interference, in which case the
user at there own expense will be required to take whatever measures may be
necessary to correct the interference. Changes or modifications not expressly
approved by the party responsible for compliance could void the user’s authority
to operate the equipment. This digital apparatus does not exceed the Class A
limits for radio noise emission from digital apparatus set out in the Radio
Interference Regulation of the Canadian Department of Communications.
2
VGA –RS232 SWITCH AND EXTENDER
Contents
1. Introduction.............................................................................2
1.1 General.............................................................................2
1.2 Features ...........................................................................3
2. Installation...............................................................................4
2.1 Connecting the SW-VRS232-2S ......................................4
2.2 Connecting the SW-VRS232-2R......................................5
2.3 Mounting the SW-VRS232-2S..........................................6
3. Configuration and Operation...................................................9
3.1 Front Panel LED Indicators ..............................................9
3.2 Adjusting Remote video quality for long cables................9
3.3 UTP Cable Recommendations.......................................10
4. Troubleshooting....................................................................11
4.1 Contacting Hall Research Technologies ........................11
4.2 Shipping and Packaging.................................................11
5. Specifications........................................................................12
1. Introduction
1.1 General
This manual covers both sender (Model SW-VRS232-2S) and remote (Model
SW-VRS232-2R), available either separately, or as a set.
The Hall Research 2 input switch/extender is a powerful, yet simple 2x1 VGA
and RS-232 switch. It allows one or two users to select between 2 PC’s, and
access the selected PC’s Serial RS-232 port and VGA video. A typical
installation would be connecting a touch-screen LCD to the unit and then be
able to switch the touch-screen LCD between 2 PC’s.
3
Model SW-VRS232
The local user can connect to the Sender unit. To add a remote user, an optional
2-gang wall plate would be needed. The optional wall plate connects to the local
unit via 2 Catx cables. No power supply is required for the wall plate. One Catx
cable is used to extend the Video and the other is used to extend bi-directional
RS-232. The Remote unit can be located up to 500ft. away from the Sender
Unit.
The user at the Sender station can switch between the 2 PC’s by simply pushing
a button on the unit’s front panel. LED indicators provide feedback as to which
PC input is selected.
The Remote station controls the same PC as the local (both displays show the
same image). Any RS-232 output from the PC is sent to both Stations, and RS-
232 data from each station is automatically multiplexed as a first-come-first-
served basis. This means that, for example, if the sender station is sending RS-
232 data to the selected PC, the RS-232 data from the Remote station is
ignored until the Sender station stops transmitting data for about a second. In
this way collision of Rx data is prevented.
If control of the input selection is needed at the remote station, an optional push
button switch cord can be utilized (Model PB-SW). This push button plugs into
the receiver wall plate and can sit by the remote LCD. It has a momentary button
with built-in LED. Every time the switch is pressed the input selection is toggled
between PC 1 and PC 2. The LED on the remote push button cord blinks once
when PC 1 is selected, and twice when PC 2 is selected. The push button is
only available in a 6ft. length, but can be easily extended since it uses a
standard 3.5mm mini-stereo type of plug.
1.2 Features
Supports High Resolutions up to UXGA (1600x1200)
Sender drives video and serial up to 500 ft.
Auto-detect serial activity allows only one user to control serial RS-232 at
a time.
Single switch operation from either local or remote stations
Only one power supply needed (power sent over Catx to receiver)
2-gang wall plate receiver and mountable sender for clean installation
Compact, Rugged, Reliable, and Economical
Made in USA
4
VGA –RS232 SWITCH AND EXTENDER
2. Installation
2.1 Connecting the SW-VRS232-2S
1. For connection to a typical PC, use HD15 M/M cables for Video, and straight-
through DB9 M/F cables for RS-232. Connect all devices to the unit and then
connect the Power supply to the device.
Front
View
Rear
View
Figure 2.2 SW-VRS232-2S
Figure 2.1
5
Model SW-VRS232
2.2 Connecting the SW-VRS232-2R
1. If the optional 2-gang wall plate receiver (Model SW-VRS232-2R) will be
used, make sure to plug the Catx cables to the correct connector on both ends.
The unit is designed so that there is no damage if the cables are cross
connected since the power distribution uses the same pins in the UTP cable, but
if plugged incorrectly, the system will not work.
2. The remote user can switch between PC’s by using an optional push-button
switch, (Model # PB-SW). When pushed, an LED in the switch will blink to
indicate which PC is selected – once for PC 1, twice for PC 2.
3. Video compensation is set with the receiver running, prior to installing the
wall plate. Adjustment is made via a small potentiometer on the back of the
video board, labeled “CABLE ADJ”. Start with the compensation pot turned fully
CCW (no compensation); then gradually increase until video image bleeding is
eliminated. See Section 3 for cable type and video considerations.
Figure 2.3
SW-VRS232-2R
Receiver
PB-SW
6
VGA –RS232 SWITCH AND EXTENDER
Note about Touch-Screen LCD’s
The system is designed to work the touch-screen
LCD’s that use RS-232. USB touch-screens are not
supported even if an adapter is used.
When 2 stations are used (local and remote), you must
ensure that both touch-screens are exactly the same
make and model. This is because there is no software
or special driver used with this setup and the PC is not
aware that there are 2 touch-screens, therefore the
calibration of both LCD’s need to be identical.
To calibrate the touch-screen driver of each PC
(geometry targets), it is recommended to use the local
touch-screen. First select PC 1 and then enter the
calibration screen of PC 1 where you are required to
touch a few targets that are displayed on the screen.
Once PC 1 is calibrated, select PC 2 and repeat the
process. If the 2 touch-screen LCD’s are identical, then
the remote touch screen’s calibration should be
correct.
2.3 Mounting the SW-VRS232-2S
The SW-VRS232-2S provides mounting keyholes to secure the unit for a clean
and simple installation.
Before you start:
To avoid risk of electric shock, do not install screws
where power or data lines may be present, such as
near electrical outlets, switches, or server rooms.
Always use safety glasses when working with power
tools.
1. Use the stencil sheet provided with the Sender to find an acceptable location
for the unit. Once correctly positioned, tape the stencil down to secure it.
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Model SW-VRS232
2. Drill pilot holes where indicated on the stencil, using a 1/16” bit.
3. Screw Selection: Be sure to use the appropriate kind of screw for the surface
the unit is being mounted to. It is recommended to use a 1” long, #6 screw
(shank = 0.138, or about 9/64”).
4. Remove the stencil and install screws, leaving 0.19” (about 3/16”) of the
threads protruding (when measuring, do not include the screw head).
CAUTION:
Improper installation of mounting screws may result in
damage to unit. A screw protruding 0.40” (or more
than about 3/8”) will hit the circuit board, causing
possible damage. Additionally, the unit will not be
securely mounted, which may cause it to fall. Measure
screws for proper height prior to securing the unit.
SW-VRS232-2S Bottom View of Keyhole Mounts
8
VGA –RS232 SWITCH AND EXTENDER
Stencil - Top View with Dimensions (NOT TO SCALE)
Side View with Clearance Dimensions (NOT TO SCALE)
Indice
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