Page 1
H
R
aallll
H
eesseeaarrcchh
R
T
eecchhnnoollooggiieess,, IInncc..
T
4 x 1 S-Video Switch
with Serial Control
VS4-YC User’s Manual
CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S. 800-959-6439
FREE technical support, Call 714-641-6607 or fax 714-641-6698
Mail order: Hall Research Technologies, 1163 Warner Ave. Tustin CA. 92780
Web site: www.hallresearch.com • E-mail: info@ hallresearch.com
UMA1009 Rev. B
Page 2
VS4-YC User’s Manual
Trademarks Used In this Manual
Hall Research, HRT, and (logo) 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 Statement
This equipment generates, uses and radiates radio frequency energy and, if not
installed and used in accordance with the instructions, may cause harmful
interference to radio communications. It has been tested and found to comply
with the limits for a Class A computing device, pursuant to Part 15 of the FCC
rules. Harmful interference when operated in a commercial environment.
Operation of this equipment in a residential area may cause interference, in
which case the user, at his own expense, will be required to take whatever
measures are necessary to correct the interference.
European Union Declaration of Conformity
This product has been tested and shown to comply with the
requirements of the European EMC directive 89/336/EEC
Contents
1. Introduction .............................................................................. page 3
1.1 General ............................................................................... page 3
1.2 Features .............................................................................. page 3
2. Installation ................................................................................ page 4
3. Operation .................................................................................. page 4
3.1 Modes of Operation............................................................. page 4
3.2 Front-Panel Switches........................................................... page 4
3.3 RS-232 control via Hyper Terminal.................................... page 5
3.4 Non-Volatile Memory ......................................................... page 6
4. Troubleshooting ........................................................................ page 6
4.1 Calling Hall Research and Shipping/Packaging.................. page 6
5. Specifications............................................................................ page 6
2
Page 3
4 to 1 S-Video Switch
1. Introduction
1.1 General
The Model VS4-YC is a versatile S-Video (Y/C or S-VHS) Switch with 4
inputs and one output. It is compatible with all TV standards.
The selection of the channel to be displayed can be made from individual front
panel switches or via RS-232 control port. Four LED lights are used to show the
channel selection.
The unit features 250 MHz amplifiers for a clear and crisp image
The output can be placed in scan mode (either from the front panel by pressing
two buttons simultaneously, or via a serial command). In this mode the output
displays each input channel for a few seconds and cycles through all inputs. The
output can also be blanked via a serial command.
1.2 Features
• Serial Port for Control via external device
• Buffered output; perfect for high quality video
• Scan mode to cycle through each input.
• LED Indicators
• Rugged Shielded Metal Enclosure
• Installs in minutes
3
Page 4
VS4-YC User’s Manual
2. Installation
1. Plug in the desired number of S-Video sources to the S-Video inputs on the
back of the VS4-YC.
2. Connect an output device to the S-Video output on the back of the VS4-
YC.
3. Connect the included RS-232 cable to a PC or other Serial control device if
so desired.
4. Connect the included power supply to the jack on the rear of the unit.
5. Apply AC to the power supply
6. Turn on your output video display and all video sources
3. Operation
3.1 Modes of Operation
Scan Mode - Will cycle through and select each S-Video signal for a
programmed number of seconds (1 to 60), and then switch to the next S-Video
input.
Normal Mode - S-VIDEO inputs are selected based on user input (default).
The VS4-YC can only be in one of these modes at a time.
3.2 Front-Panel Switches
The first function of the front panel buttons is to switch from one S-Video signal
to another. Just press the button and the S-Video signal you selected will be
routed to the output. If there is no S-Video signal to be displayed then you will
see a black screen. The VS4-YC will enter Normal Mode any time a single front
panel button is pressed.
The second use of the front panel buttons is to put the VS4-YC into Scan Mode.
Press buttons 3 and 4 simultaneously and the VS4-YC will enter Scan Mode.
The time interval between switching will be the time interval last specified via
Hyper Terminal. If no interval has been specified then the default is 5 seconds.
The third use of the front panel buttons is to reset the VS4-YC to the factory
default settings. Press button 1 and 4 simultaneously for 3 seconds. This will
turn off scan mode and set the scanning interval to the default time of 5 seconds.
This will also un-blank the outputs.
4
Page 5
4 to 1 S-Video Switch
3.3 RS-232 control via Hyper Terminal
To use the RS-232 control interface, start HyperTerminal™ with the following
settings:
Baud rate: 4800
Data Bits: 8 Parity: None Stop Bits: 1 or 2
Flow Control: None
This is what the menu will look like in HyperTerminal™.
By pressing the number keys, "1", "2", "3", "4", the VS4-YC will switch to that
S-Video input. This will also put the VS4-YC into Normal Mode.
Pressing "s" will put the VS4-YC into Scan Mode. Before the VS4-YC enters
Scan Mode, you will be asked how many seconds between switching:
"Seconds between switching? (1-60)".
To this question, you must input a number between 1 and 60 then press enter.
Any other input will cause this question to be repeated.
Pressing "b" will blank the S-Video output and mute the line level Stereo output
from the VS4-YC until the un-blank command is received.
Pressing "u" will un-blank the S-Video output and un-mute the line level Stereo
output from the VS4-YC if it was previously blanked.
Pressing "f" will reset the VS4-YC with the factory defaults. The factory
defaults are Normal Mode, and the time interval between scanning is 5 seconds.
3.4 Non-Volatile Memory
The VS4-YC saves the last channel selected and the Mode of operation (scan vs.
normal) after power off. Blanking mode is not remembered.
5
Page 6
VS4-YC User’s Manual
4. Troubleshooting
Contacting Hall Research and Shipping/Packaging
Contact HRT Support at 714-641-6607 or via email or web. Before you do,
make a record of the history of the problem. We will be able to provide more
efficient and accurate assistance if you have a complete description. If you need
to ship your unit for repair, make sure to get a RMA number first.
5. Specifications
Video Gain/Level Unity Gain. 1V p-p for Y, 0.3 V p-p for C
Video Bandwidth 250 MHz. (-3 dB)
Input Impedance Video: 75 Ω on Y and C
Serial Control 4800 Baud, 8-bit, 1 stop bit, no parity
Temperature Operating: 32 to 122°F (0 to 50°C)
Storage: –40 to +158°F (–40 to +70°C)
Enclosure Steel
MTBF 85,000 hours (calculated estimate)
Power From utility-power (mains) outlet, through included external
power supply. Output Voltage: 6v DC Center-Positive.
Average Power Consumption: 1 Watt
Size (hxwxd) 1.25” H x 2.75”W x 8.25” L (32 x 70 x 210 mm)
Weight 2 lbs. or 0.8 Kg (shipping)
6
Page 7
Page 8
Products Designed and Made in the USA
CUSTOMER
SUPPORT
INFORMATION
Order toll-free in the U.S. 800-959-6439
FREE technical support, Call 714-641-6607 or fax 714-641-6698
Mail order: Hall Research Technologies, 1163 Warner Ave. Tustin CA. 92780
Web site: www.hallresearch.com • E-mail: info@ hallresearch.com
Loading...