Knox Video RSIII User manual

RSIII
Routing Switcher
Operation and Technical Manual
Knox Video Technologies
8677 Grovemont Circle
Gaithersburg, MD 20877
301-840-5805 / 301-840-2946 Fax
www.knoxvideo.com

Warnings, Cautions and Others
Mises en garde, precautions et indications diverses
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK:
• DO CONNECT CHASSIS TO PROTECTIVE (SAFETY) EARTH WITH SUPPLIED
POWER CABLE,
• DO NOT OPEN,
• DO NOT REMOVE THE COVER (OR BACK),
• DO NOT EXPOSE TO AN EXPLOSIVE ATMOSPHERE,
• DO NOT EXPOSE TO RAIN OR MOISTURE,
• DO NOT BLOCK THE POWER PLUG LOCATION,
• DO NOT ATEMPT TO SERVICE, NO USER SERVICE PARTS INSIDE,
• DO NOT ATEMPT TO PERFORM UNAUTHORIZED MODIFICATIONS,
•
DISCONNECT THE MAINS PLUG TO SHUT THE POWER OFF COMPLETELY.
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated “dangerous voltage” within the
product’s enclosure that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
The exclamation point, within an equilateral triangle, is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.

For U.S.A.
NOTE: 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. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna
Increase the separation between the equipment and receiver
Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected
Consult the dealer or an experienced radio/TV technician for help
For Canada/pour le Canada
CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF
PLUG TO WIDE SLOT, FULLY INSERT. ATTENTION: POUR EVITER LES
CHOCS ELECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE
DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQUAU
FOND.
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la Classe A est conforme à la norme NMB-003 du
Canada.
• Do not block the ventilation openings or holes.
(If the ventilation openings or holes are blocked by a newspaper or cloth, etc., the heat may not be
able to get out.)
• Do not place any naked flame sources, such as lighted candles, on the apparatus.
• When discarding batteries, environmental problems must be considered and local rules or laws
governing the disposal of these batteries must be followed strictly.
• Do not use this apparatus in a bathroom or places with water. Also do not place any containers
filled with water or liquids (such as cosmetics or medicines, flower vases, potted plants, cups,
etc.) on top of this apparatus.
ATTENTION:
• Ne bloquez pas es orifices ou es trous de ventilation. (Si es orifices ou es trous de ventilation
sont bloqués par un journal un tissu, etc., la chaleur peut ne pas être évacuée correctement de
l’appareil)
• Ne placez aucune source de flamme nue, telle qu’une bougie, sur l’appareil.

• Lors de la mise au rebut des piles, veuillez prendre en considération es problèmes de
l’environnement et suivre strictement les règles et les lois locales sur la mise au rebut des piles.
• N’utilisez pas cet appareil dans une salle de bain ou un autre endroit avec de l’eau.
• Ne placez aucune récipient contenant de l’ear (tel que des cosmétiques ou des médicaments, un
vase de fleurs, un pot de fleurs, une tasse, uec.) sur cet appareil.
ATTENTION
Afin d’éviter tout risque d’électrocution, d’incendie, etc.:
1. Ne pas enlever es vis ni es panneaux et ne pas ouvrir le coff ret de l’appareil.
2. Ne pas exposer l’appareil a la pluie ni a l’humidité.
Caution — STANDBY/ON switch!
Disconnect the mains plug to shut the power off completely. The STANDBY/ON switch in any
position does not disconnect the mains line. The power cannot be remote controlled.
Attention — Commutateur STANDBY/ON!
Déconnecter la fiche de secteur pour couper complètement le courant. Le commutateur
STANDBY/ON ne coupe jamais complètement la ligne de secteur, quelle que soit sa position. Le
courant ne peut être télécommandé.
RoHS – Restriction of Hazardous Substances
The RoHS Directive, enacted by the European Union (EU), restricts the use of six
hazardous substances (lead, mercury, cadmium, hexavalent chromium, polybrominated
biphenyls or polybrominated diphenyl ethers) within electrical and electronic equipment.
The goal, consistent with other international regulations, is to contribute to human health
and the environment by restricting the use of these hazardous substances in new
equipment. Manufacturers of electronics products outside Europe must abide by this
legislation if the equipment they produce is ultimately imported in a EU member state.
This equipment complies with the RoHS directive 2002/95/EC.
Initial Inspection
Before shipment, this unit was inspected and found to be free of mechanical and electrical
defects. As soon as the unit is received, inspect for any damage that may have occurred in transit.
Save all packing materials in case that the unit has to be returned. If damage is found, please file
a claim with the carrier immediately. Do not return the unit to Knox Video Technologies without
prior approval.
Limited Warranty
Unless otherwise stated in the product specific documentation received with this product, Knox
Video Technologies provides a five-year limited warranty for this product. The above warranty
period shall begin on the date of shipment by Knox to purchaser or, if purchaser is an authorized
reseller of such Knox products, from the date of shipment by the reseller to the reseller’s original
customer. The warranty set forth above shall not apply to failure or deficiency, which has been
caused by misuse, abnormal or unusually heavy use, neglect, alteration, improper installation,
unauthorized repair or modification, improper testing, accidental or causes external to the product
such as but not limited to excessive heat or humidity, power failure, or improper installation.
This warranty gives you specific legal rights, and you may have other rights, which vary from
state to state.

IF SERVICE IS REQUIRED:
If the product does not perform as warranted, call Knox Video Technologies at 301-840-5805 for
available service options. If it is necessary to return an item to Knox Video Technologies obtain a
Return Authorization, RA, number prior to returning the product. When returning the product, the
defective product should be securely packaged in original boxes and insured for shipment. Place
the RA number on the outside and inside of the package. Include a description of the problem
with the product. Owner agrees to insure and accept all liability for loss of or damage to this
product.
YOU MUST CALL TECHNICAL SUPPORT AT 301-840-5805 FOR A RETURN
AUTHORIZATION NUMBER (RMA) AND “SHIP-TO” ADDRESS BEFORE SHIPPING
ANY PRODUCT TO KNOX VIDEO TECHNOLOGIES.

Table of Contents
SECTION 1. GENERAL INFORMATION
1.1 INTRODUCTION
1.2 TECHNICAL DESCRIPTION
1.3 DETAIL SPECIFICATIONS
SECTION 2. INSTALLATION
2.1 INTRODUCTION
2.2 UNPACKING AND INSPECTION
2.3 INSTALLATION
2.4 VIDEO CONNECTIONS
2.5 AUDIO CONNECTIONS
2.6 CAT CONNECTIONS
2.7 EXTERNAN COMMUNICATIONS
2.7.1 RS-232 CONNECTION
2.7.2 RS-422 CONNECTION
2.7.3 ETHERNET CONNECTION
SECTION 3. OPERATION
3.1 INTRODUCTION
3.2 CONNECTIONS
3.3 CONTROL VIA THE FRONT PANEL
3.3.1 DISPLAYING THE CROSSPOINT CONNECTIONS AND VTB VALUES
3.3.2 CHANGING A CROSSPOINT CONNECTION
3.3.3 USING THE MUTE BUTTON
3.3.4 ADJUSTING VOLUME AND TONE WITH THE ROTARY SWITCH
3.4 CONTROL VIA THE SERIAL RS232/RS422 PORT OR ETHERNET PORT
3.4.1. LETTER COMMANDS – SWITCHING CHANNELS
3.4.1.1 ROUTING AUDIO AND VIDEO
3.4.1.2 USING THE CONFERENCE MODE
3.4.1.3 USING THE SALVO MODE
3.4.1.4 USING THE QUEUE MODE
3.4.2 CROSSPOINT STATUS AND CONFIGURATION COMMANDS
3.4.2.1 DISPLAY OR DUMP COMMAND
3.4.2.2 CLEARING ALL CONNECTIONS
3.4.2.3 USING PATTERNS
3.4.2.4 IMMEDIATELY CORRECTING INADVERTENT COMMANDS
3.4.2.5 OBTAINING INFORMATION ABOUT THE SWITCH
3.4.3 $ COMMANDS - CONTROLLING THE SOUND
3.4.3.1 VOLUME CONTROL
3.4.3.2 BASS AND TREBLE CONTROL
3.4.3.3 BALANCE CONTROL
3.4.3.4 MUTE CONTROL
3.4.3.5 LOUNDESS CONTROL
3.4.3.6 SETTING ZONE GROUPS FOR VTB CONTROL
3.4.4 AUDIO STATUS AND CONFIGURATION COMMANDS
3.4.4.1 DISPLAY OR DUMP COMMAND
3.4.4.2 CLEAR COMMAND
SECTION 4. MAINTENANCE
4.1 INTRODUCTION
4.2 CLEARING THE MEMORY

SECTION 1. GENERAL INFORMATION
1.1 INTRODUCTION
The KNOX RSIII AUDIO/VIDEO ROUTING SWITCHER is a family of devices, which accepts
up to sixteen video sources and sixteen stereo audio sources. The RSIII connects any one of the
sixteen inputs, to one or more of the sixteen outputs, depending on model. The video signals may
be switched independently or with the audio signals.
The RSIII family of switches consists of five basic models; Composite, Y/C, RGB/YPbPr and
RGBHV any of which can contain balanced, unbalanced or no audio. Optional features include
volume and tone control for the audio as well as capability to output the audio and video signals
over CAT 5/6 cable.
1.2 TECHNICAL DESCRIPTION
The RSIII uses a single chip microprocessor with flash memory to control a set of monolithic
digital latching crosspoint decoders. Cross-point information is collected by the microprocessor
from the front panel controller, the RS232/RS422 and Ethernet inputs on the rear panel. Audio
and video may be routed together or separately. The audio volume, tone, and balance may be
adjusted if the VT option is installed.
1.3 DETAIL SPECIFICATIONS
Video Channels:
RGBHV, RGB/RGB: - up to QXGA (2048x1536), HD up to 1080p, SD NTSC, PAL, SECAM
Levels: 1V p-p
Frequency Response: DC to 300MHz @ 1v <3dB down at 200MHz
Input Impedance: 75 Ohms
Output Impedance: 75 Ohms
Crosstalk: less than -70dB@5MHz
Connectors: 75 Ohm female BNC
Optional RJ-45 female (CAT 5/6/nano-skew cable)
Maximum DC Input: +/-0.5V
Composite and Y/C: - NTSC, PAL or SECAM standards
Levels: 1V p-p
Frequency Response: DC to 30MHz @ 1v <3dB down at 30MHz
Input Impedance: 75 Ohms
Output Impedance: 75 Ohms
Crosstalk: less than -70dB@5MHz
Connectors: 75 Ohm female BNC
4 pin DIN for Y/C
Maximum DC input: +/-0.5V
Audio Channels
Without Volume Tone option:
Unbalanced Audio
Frequency Response:
Maximum: 10Hz-30kHz
+/- 0.1db 22Hz-22kHz

THD @1kHz:
0 dbu: 0.0083%
+20 dbu: 0.0063%
Noise 22Hz-22kHz: -80 dbu
Crosstalk CH-CH, +20dbu:
2kHz -102 db
20kHz -82 db
Max Input Level: +24 dbu
Max Output Level: +24 dbu
Gain: 0db (unity)
Input Impedance: 15K Ohms, DC coupled
Output Impedance: 500 Ohms, DC coupled
Connectors: RCA
Balanced Audio
Frequency Response:
Maximum: 10Hz-30kHz
+/- 0.1db 22Hz-22kHz
THD @1kHz:
0 dbu: 0.018%
+20 dbu: 0.008%
Noise 22Hz-22kHz: -70 dbu
Crosstalk CH-CH, +20dbu:
2kHz -100 db
20kHz -81 db
CMMR 22Hz-22kHz: 75.5 db
Max Input Level: +24 dbu
Max Output Level: +24 dbu
Gain: 0db (unity)
Input Impedance: 600 Ohms
Output Impedance: 600 Ohms
Connectors: WECO 931-HSL/930-HFL
With Volume Tone option:
Unbalanced Audio
Frequency Response:
Maximum: 10Hz-30kHz
+/- 0.1db 22Hz-22kHz
THD @1kHz:
0 dbu: 0.014%
+20 dbu: 0.022%
Noise 22Hz-22kHz: -81.1 dbu
Crosstalk CH-CH, +20dbu:
2kHz -96 db
20kHz -76 db
Max Input Level: +24 dbu
Max Output Level: +24 dbu
Gain: 0db (unity)
Input Impedance: 15K Ohms, DC coupled
Output Impedance: 500 Ohms, DC coupled
Connectors: RCA

Balanced Audio
Frequency Response:
Maximum: 10Hz-30kHz
+/- 0.1db 22Hz-22kHz
THD @1kHz:
0 dbu: 0.019%
+20 dbu: 0.012%
Noise 22Hz-22kHz: -70 dbu
Crosstalk CH-CH, +20dbu:
2kHz -100 db
20kHz -81 db
CMMR 22Hz-22kHz: 75.5 db
Max Input Level: +24 dbu
Max Output Level: +24 dbu
Gain: 0db (unity)
Input Impedance: 600 Ohms
Output Impedance: 600 Ohms
Connectors: WECO 931-HSL/930-HFL
CAT:
Cable: 5/5e/6/nano-skew
Maximum Distance:
CAT 5/5e/6: 450 feet
Nano-skew: 1000 feet
Connector: RJ45
Control:
Front Panel: Push buttons
RS232/RS422: DB9 female, Knox protocol 1.1.0
Ethernet: RJ45, 10/100 Auto-sense
(Default IP 192.168.168.48 port 3001)
General:
Temperature:
Operating: 32F to 113F (0C to 45C)
Storage: -4F to +140F (-20C to +60C)
Humidity: 10% to 90% non-condensing
MTBF: 20,000 hours
Shipping Weight: 10 pounds
Compliance: FCC Class A, CE Emissions, Health and Safety and RoHS
Power: 1.0A, 50 watts, 171 BTU/hr. maximum
Input Voltage: 100-240VAC, 50-60 Hz
RGBHV, RGB
Dimensions: 19” wide by 5.25” high by 10” deep, 3RU
Composite Y/C
Power: 0.5A, 40 watts, 137 BTU/hr. maximum
Dimensions: 19” wide by 3.5” high by 10” deep, 2RU

SECTION 2. INSTALLATION
2.1 INTRODUCTION
This section provides the information required for installation of the RSIII into its operating
environment.
CAUTION!
The RSIII is designed to work in standard video and audio systems. Operation in other
environments may harm the RSIII or associated equipment.
2.2 UNPACKING AND INSPECTION
Unpack the RSIII carefully and verify that the serial number matches the number quoted on the
packing list. Before installing it into a system, check the outside of the unit carefully for signs of
damage and check that none of the fasteners has come loose.
2.3 INSTALLATION
The RSIII will be connecting a number of input devices to a number of output devices. Choose a
space, which is convenient for all the cables to converge. Mount the RSIII in a standard 19" rack
panel; it requires two or three standard rack units (2U or 3U) for clearance.
CAUTION!
THE MAINS OUTLET THAT IS UTILIZED TO POWER THE EQUIPMENT MUST BE
WITHIN 3 METERS OF THE DEVICE AND SHALL BE EASILY ACCESSIBLE.
THERE SHALL BE NO SWITCHES OR DISCONNECT DEVICES IN THE EARTH
CONDUCTOR.
Connect the AC power cord to a properly grounded AC power mains outlet of the correct
voltage and frequency. There is no power switch on the RSIII; it is intended to be on at all
times.
2.4 VIDEO CONNECTIONS
Connect up to sixteen, depending on model, video inputs (cameras, VCRs, DVD players, satellite
receivers, RF demodulators, etc) to the video input connectors. It is not necessary to terminate
unused inputs. Connect up to sixteen, depending on model, output devices (TV monitors, PVR’s,

LCD projectors, RF modulators, etc) to the video output connectors. Be sure that all destination
devices are terminated in 75 ohms. It is not necessary to terminate unused outputs. Do not
connect an input of video to any of the video output connectors.
2.5 AUDIO CONNECTIONS
Connect up to sixteen balanced or unbalanced audio sources (CD players, tape players, PVR’s,
microphones, RF demodulators, etc) to the left and right channel input connectors. For balanced
audio units, the common is at the center the + is on top and – is on the bottom as shown on the
figure.
Inputs are high impedance (15K). Note: an unbalanced source may be connected to a balanced
input by connecting the signal lead of the audio source to the + input and connecting the shield to
both the center and – inputs. Connect up to sixteen, depending on model, audio output devices
(amplifiers, PVR’s, tape/CD recorders, RF modulators, etc) to the left and right channel output
connectors. Do not connect a source of audio to any of the audio output connectors.
2.6 CAT CONNECTIONS
If the optional D-CAT is installed there are two output channels that can extend the audio and
video signals over ordinary Category 5 cable. The RSIII contains the transmitter portion of the
Knox Video System’s CAT 5 Video Distribution System. The receiver (two required) portion
must be purchased separately.
CAUTION:
CAT5/5e/6/nano-skew cabling must be pinned to the TIA-EIA T568B wiring specification.
This equipment is not intended for, nor does it support, connection through an Ethernet
network. Do not connect these outputs to any sort of networking or telecommunications
equipment.

2.7 EXTERNAL COMMUNICATIONS
Any number of external devices can control the RSIII as long as it supports the Knox
Communications Protocol. The simplest is a standard terminal program running on a computer.
Knox Video Technologies provides a Graphical User Interface, GUI, called KnoxConnect that
can be downloaded from the Knox Video Technologies website. KnoxConnect will run under
Microsoft XP and Vista, Apple Mac and Ubuntu operating systems. The communications can be
via any of the following interfaces: RS-232, RS-422 and Ethernet. All three methods can be
active at the same time.
In a Windows environment, Hyperterminalmay be set up to control the RSIII via RS-232, RS-
422, or Ethernet. Start by brining up Hyperterminalthen choose File, Properties, and choose the
direct connection from a COM port or TCP/IP. Under Configure, for a COM port set the baud
rate to 9600, 8 bits, no parity, 1 stop bit, and no flow control; for a TCP/IP connection enter the IP
address of the RSIII and enter port 3001. Click OK and you should be connected. If the connect
fails, consult your network administrator.
2.7.1 RS-232 CONNECTION
External RS-232 devices can control the RSIII. Connect a computer terminal or other RS-232
control device to the female DB9 connector on the left side of the rear panel. The RSIII is wired
as a data terminal; that is, data out of the RSIII is on pin 2, data in is on pin 3, and pin 5 is
common (ground). When connecting to the rear panel DB9. A direct pin-for-pin connection from
a PC compatible COM port should be set up as follows: select 9600 baud, 8 bits, no parity, and
one or two stop bits. Set the Flow Control to NONE. Once connected and operational the user
can send an H command to the RSIII to get instructions on how to use specific commands. See
the command summary later in the manual.

2.7.2 RS-422 CONNECTION
An external RS-422 device connected to the rear panel DB9 connector can also control the RSIII.
Connect transmit data (from the RSIII) to pins 6 (+) and 7 (-), and receive data (to the RSIII) to
pins 8 (+) and 9 (-). Common is pin 5.
2.7.3 ETHERNET CONNECTION
The RSIII can be controlled on a TCP/IP network from anywhere in the world by connecting a
network cable to the Ethernet port on the rear of the RSIII. The RSIII must be assigned a unique
IP address, and the device controlling the RSIII must use that IP address and the correct port to
connect to the RSIII. The default network configuration, as shipped from the factory, is:
IP address: 192.168.168.48
Subnet mask /24
Gateway 0.0.0.0
Port 3001.
CAUTION:
When accessing the RSIII through the network connection security must be considered. If
the RSIII is connected to a network that has access to the Internet be sure to contact the
network administrator to be sure an adequate firewall is in place.
To configure the IP network address and port to something different than the default, contact your
network administrator and ask them for the network information. Connect the RSIII to a
computer via a RS-232 cable. Note: the IP address cannot be changed from the Ethernet port.
Once the Computer and RSIII have been powered up open a terminal server program and send the
IP command to the RSIII. The RSIII will respond with the message:
Cycle Power To Enter Network Settings Menu

At this point unplug the power to the RSIII wait 10 seconds and then plug the RSIII back in.
After the RSIII initializes itself the terminal program will display the message:
*****************************************************
** Network Configuration **
*****************************************************
IP Address:
And will be waiting for input. Available settings are the RSIII's IP, Gateway, Netmask, and Port
Number. The IP and Gateway must be valid IP addresses or it will not be accepted. If an RSIII
configured with DHCP is desired set the IP address to 0.0.0.0. The netmask can range from 0 to
31. Valid Port Numbers range from 1 to 65535, but 1 to 1024, 9999, 14000 to 14009, 30704, and
30718 are restricted from use.
Enter the information requested ([ENTER] represents the enter key).
IP Address: 192.168.48.1[ENTER]
Gateway Address: 192.168.1.1[ENTER]
Netmask: 24[ENTER]
Port: 3001[ENTER]
Once properly configured access to the RSIII can only be gained by use of a user login and
password. The default username is admin and the default password is pswd.To change the
username or password, send the command /[ENTER] to the RSIII. The RSIII will respond by
asking for the current user name and password; once accepted, it will prompt for the new
username and password. If the username and password were changed while connected via the
Ethernet the user will be logged off and will have to login again with the new username and
password.
The MAC address of the switch can be found by sending the Icommand to the switch. The unit
will return various information (see paragraph 3.4.2.5), which includes the MAC and IP address.

SECTION 3. OPERATION
3.1 INTRODUCTION
This section explains the operation of the RSIII using the Front Panel push-button switches, the
RS232/RS422 serial ports, or the Ethernet port.
On power up, the front panel display will indicate our company’s name for a few seconds then
display the current configuration. The configuration consists of the Switcher Series, which is
RSIII; the Model type RGBHV, RGB, SVID, COMP or AO; the number of video inputs and
outputs; the type of video connector; the type of audio UBAS, BAS, MIXED or VO; whether
there is an optional Volume Tone board installed; the number of audio inputs and outputs; if there
is an optional D-CAT board installed and finally if the unit has Ethernet communications ability.
After a while, the display will revert to its normal status screen. At this point, the operator can
use any of the three methods of controlling the unit.
3.2 CONNECTIONS
Connect audio and video sources and destinations as described in section 2. There is no
requirement that all inputs or outputs be used or terminated, but be sure that all outputs that are
used are properly terminated.
Outputs should not be looped back to unused inputs.
3.3 CONTROL VIA THE FRONT PANEL
The Front Panel displays information about the condition of the RSIII crosspoints and the settings
of the optional volume and tone, VT, for each output. The display consists of a Vacuum
Florescent Display with a rotary switch to select the output number and to adjust VT parameters.
In addition, an array of up to 32 push-button switches allows for the selection of crosspoints and
storage/recall of stored crosspoint patterns.
3.3.1 DISPLAYING THE CROSSPOINT CONNECTIONS AND VTB VALUES
In idle mode, line 1 of the display shows an output number (always output 1 at power up), the
Video input number connected to that output, and the Audio input number connected to that
output. Line 2 shows the current VT settings for that output number: Volume, Bass, Treble, and
Balance. To stop the crawling motion push the Clear button or turn the rotary switch (the display
will resume crawling after a few seconds). A typical display might look like:
OUT:01 VIDEO:03 AUDIO:03
V: -07 B: +2 T: -1 BAL: 0
To view the crosspoint and VT data for another output, turn the rotary until the desired output
number shows on line 1 of the display.
3.3.2 CHANGING A CROSSPOINT CONNECTION
Changes may be made to the video crosspoint, the audio crosspoint, or both. Two indicators
under the display show whether Video, Audio, or Both will be affected. Before starting a
crosspoint change, push the Select button one or more times until the correct combination of
lights is shown. You can make crosspoint changes with the 16 input buttons and 16 output
buttons on the right. Start by pressing either an input number or with an output number, and then
push the other connection you want to make. When making a crosspoint change, pushing one of
the 16 input or output buttons will cause the Armed LED to light indicating a change is pending.
Make the desired output or input connection, or push Clear to start over. If no crosspoint selection
is made, the armed light will go off after five seconds the user will have to start all over again.

3.3.3 USING THE MUTE BUTTON
The Mute button under the display can be used to mute any output. Turn the Rotary Switch until
the output you wish to mute shows on the display, then push the Mute button. You will be
prompted to verify the output number so push Mute again, or push Clear. A letter M will appear
next to the Volume indicator in the second line of the display in place of the polarity sign, e.g. V:
M07.
3.3.4 ADJUSTING VOLUME AND TONE WITH THE ROTARY SWITCH
The VT parameters of any output may be changed from the front panel. Turn the rotary until the
display is showing the output you wish to make changes to, then click the rotary (push the knob
in, then release it) until the desired parameter is displayed on the LCD. Rotate the knob to raise
and lower the volume or cut and boost the tone. Wait 10 seconds or press the Clear button to
return to the status display.
3.4 CONTROL VIA THE SERIAL RS232/RS422 PORT OR ETHERNET PORT
The RS-232/RS-422 serial data ports on the rear panels allow complete control of the RSIII from
a computer terminal or other software-driven control device. Through a simple alphanumeric
protocol, commands to configure and control the RSIII can be accomplished. The rear panel DB9
serial connector will accept RS-232 or RS-422 serial data. A simple ASCII protocol allows all
crosspoint and setup commands to be sent serially through the RSIII’s RS-232/RS-422 or
Ethernet ports. These ports will accept commands from a computer, or other third party control
device. Set the control device to 9600 baud, 8 bits, no parity, and one or two stop bits, flow
control NONE. When using the serial port mode the COM port of a PC-compatible device may
be connected to the rear DB9 connector with a standard pin-for-pin serial cable. An Ethernet
driven controller must be configured for IP address and port selection. See section 2.7 for setup
and wiring details.
There are two general types of commands: letter commands, such as B, V, and A, generally
crosspoint commands, and $ commands, generally volume and tone commands. The $ commands
are commands which start with the dollar sign. Certain other commands are available but are only
use for setup and control. All commands to the RSIII are not case sensitive. The RSIII will echo
all ASCII characters sent to it and acknowledge completed valid commands with the word
DONE. Invalid commands will result in the message ERROR and a short description of the error
being returned. The designation [ENTER] in the commands below means Carriage Return, or
hexadecimal 0D. It is not necessary to send a Line Feed (0A) with the Carriage Return.
The RSIII has a maximum of 16 input and output channels. For compatibility with other Knox
Video Technologies’ switches one, two or three digits can be used for the input and output
channels with most commands. However, the number of digits must be consistent. The number
of digits in the output portion must match the number of digits in the input. This is best shown
with an example. Suppose a video connection between a TV attached to output 2 and a DVD
player attached to input 11 is to be made. The correct syntax would be V0211 [ENTER] and
not V211 [ENTER]. Likewise, V002011 [ENTER] would also have the same correct
results.

3.4.1. LETTER COMMANDS – SWITCHING CHANNELS
3.4.1.1 ROUTING AUDIO AND VIDEO
In the examples that follow use 0, 00 or 000 for the input channel to turn that output channel off.
To route both audio and video from the same source, send a command in the form:
Bxy [ENTER]
Bxxyy [ENTER]
Bxxxyyy [ENTER]
Where x specifies the output to be routed to e.g. and y specifies the input source of e.g. (use 0, 00
or 000 for the input channel to turn the output channel off).
To route both audio and video from different sources to the same output, send a command in the
form: Qxyz [ENTER]
Qxxyyzz [ENTER]
Qxxxyyyzzz [ENTER]
Where x specifies the output to be routed to, y specifies the input source of video, and z specifies
the source of audio, (use 0’s for off).
To route video only, send a command in the form:
Vxy [ENTER]
Vxxyy [ENTER]
Vxxxyyy [ENTER]
Where x specifies the output to be routed to, and where y specifies the input source of video, (use
0’s for off).
To route audio only, send a command in the form:
Axy [ENTER]
Axxyy [ENTER]
Axxxyyy [ENTER]
Where x specifies the output to be routed to, and where y specifies the input source of audio, (use
0’s for off).
3.4.1.2 USING THE CONFERENCE MODE
Under certain circumstances, as in video conferencing, the input and output has to be cross
connected, so that a person at location A sees and hears the person at location B and vice versa.
The RSIII facilitates this with the J, K or L commands to cross connect an input and output in a
single command.
For the conference mode to work correctly, the cameras, monitors, microphones and speakers for
a given location must be wired to the same input and output number. Thus, a given location
would have its camera on Video Input 6, its microphone on Audio Input 6, its monitor on Video
Output 6, and its speakers on Audio Output 6.
To conference both audio and video from the same location, send a command in the form:
Jxy [ENTER]
Jxxyy [ENTER]
Jxxxyyy [ENTER]
Where x specifies the first location’s video and audio while y specifies the other location’s video
and audio.

To conference video only, send a command in the form:
Kxy [ENTER]
Kxxyy [ENTER]
Kxxxyyy [ENTER]
Where x specifies the first location’s video while y specifies the other location’s video.
To conference audio only, send a command in the form:
Lxy [ENTER]
Lxxyy [ENTER]
Lxxxyyy [ENTER]
Where x specifies the first location’s audio while y specifies the other location’s audio.
3.4.1.3 USING THE SALVO MODE
It is possible to send the same input to a number of consecutive outputs using the Salvo
command.
The X command sends both video and audio to the range of outputs.
Xmno [ENTER]
Xmmnnoo [ENTER]
Xmmmnnnooo [ENTER]
Where m is the first output number, n is the last output number, and o is the input number.
The Y command sends video only to the range of outputs.
Ymno [ENTER]
Ymmnnoo [ENTER]
Ymmmnnnooo [ENTER]
Where m is the first output number, n is the last output number, and o is the input number.
The Z command sends audio only to the range of outputs..
Zmno [ENTER]
Zmmnnoo [ENTER]
Zmmmnnnooo [ENTER]
where m is the first output number, n is the last output number, and o is the input number.
For example, Y010408 sends the audio from input 8 to outputs 1 through 4.
3.4.1.4 USING THE QUEUE MODE
Sometimes it is necessary to have a number of switches made all at the same instant. It is
possible to queue a number of pattern changes ahead of time, then to have them all executed at
once. In the queue mode it is possible to send a set of commands to the RSIII that will be held
until the final command is received, then all the commands are performed at the same time. The
E, F, and G commands are used to synchronize the switching of multiple events. These
commands are stored in the queue until the EE command is given to implement all changes.
The E command queues both video and audio commands.
Emn [ENTER]
Emmnn [ENTER]
Emmmnnn [ENTER]
where m is the output number, and n is the input number.
The F command queues video only commands.

Fmn [ENTER]
Fmmnn [ENTER]
Fmmmnnn [ENTER]
where m is the output number, and n is the input number.
The G command queues audio only commands.
Gmn [ENTER]
Gmmnn [ENTER]
Gmmmnnn [ENTER]
Where m is the output number, and n is the input number.
The final command in the set of commands must be EE. When the EE command is received all
previous commands that are in the queue are executed.
For example, the following consecutive command sequence was sent over some period of time.
F10 [ENTER] G42 [ENTER] EE [ENTER] will queue the video on output 1 to turn off
and route the audio on input 4 to output 2.
3.4.2 CROSSPOINT STATUS AND CONFIGURATION COMMANDS
3.4.2.1 DISPLAY OR DUMP COMMAND
To determine the condition of a particular crosspoint or group of crosspoints use the D command
of the form: DDisplay Entire Crosspoint Matrix in single group
DL Display Entire Crosspoint Matrix in Multicolumn Format
DRxy Display Range of Crosspoint Matrix in single group
DRxxyy
DRxxxyyy
Where x is the starting output channel and y is the ending output channel.
The Dcommand will dump all crosspoint connections in three columns: the output channel the
video input channel and the audio input channel that is connected to that output.
D[ENTER]
001 V007 A007
002 V007 A007
003 V007 A007
004 V006 A006
005 V004 A004
006 V002 A001
007 V001 A001
008 V000 A000
DONE
The DL command will break the display into a multi column output with headings above the
columns. It will try to use as much as the screen’s width as possible. This will allow the operator
to see more connections on a given screen.
DL[ENTER]
Out Video Audio Out Video Audio Out Video Audio Out Video
Audio
1 003 003 5 000 000 9 000 000 13 000 000
2 005 011 6 000 000 10 000 000 14 000 000
3 004 001 7 000 000 11 000 000 15 000 000

4 004 004 8 000 000 12 000 000 16 000 000
DONE
The DRxy command will display a limited range of outputs starting at x and ending at y.
DR35 [ENTER]
003 V003 A003
004 V004 A004
005 V005 A005
DONE
3.4.2.2 CLEARING ALL CONNECTIONS
All crosspoints can be reset to their default (off) condition by using the clear command of the
form: C [ENTER] Clear all crosspoint connections
3.4.2.3 USING PATTERNS
The RSIII has memory for 16 stored routing patterns. Fifteen patterns for typical use and one for
power on restore. The power-up pattern is the pattern that is loaded when the RSIII is power
cycled or first turned on. These stored configurations are non-volatile and are thus maintained
during power interruptions. To STORE the current crosspoint pattern to one of the sixteen pattern
storage areas, send a command in the form:
Sxx [ENTER]
Where xx is 01-16.
To store the current crosspoint pattern to the power-up pattern type the command
S [ENTER]
S01 [ENTER]
To recall and load one of the sixteen stored crosspoint patterns send a command in the form:
Rxx [ENTER]
Where xx is 01-16.
To recall the power-up pattern, send the command
R [ENTER]
R01 [ENTER]
The contents of the all stored patterns can be viewed by sending the Mcommand.
M [ENTER]
3.4.2.4 IMMEDIATELY CORRECTING INADVERTENT COMMANDS
If a connection was incorrectly made the operator can reverse the previous command by the
UNDO command.
UNDO [ENTER]
3.4.2.5 OBTAINING INFORMATION ABOUT THE SWITCH
Issuing the Icommand the operator can obtain information about the switch
I [ENTER]
Copyright 2008, Knox Video Technologies
RSIII, RGBHV, 12,8,BNC, UBAS, VT, 12,8,DCAT, IP
Version 1.0.7 No Video Sync Present ID: 35447070
Serial #: CO-000000-00-000