Extron electronics RGB 192 User manual

1
RGB 192V Computer-Video Interface • User Guide
About this Manual
This manual contains operation and configuration instruction for the Extron RGB 192, a universal interface.
About the RGB 192
The RGB 192 is an analog computer-video interface with 300 MHz (-3 dB) video bandwidth and Digital Display Sync
Processing (DDSP™). Figure 1 shows a typical RGB 192 application. The interface accepts a computer video and an
unbalanced computer stereo audio input. It features a local monitor output and an RGBHV, RGBS or RGsB output. The
RGB 192 features horizontal centering and level boost. It also features a balanced, line level stereo or mono audio output.
MONIT ORH- S HIFT
SERR DDSP
NO MON .
M. AUD I O
SOG
LEVEL
RGB 192
COMPUTER
AUDIO
FRONTPANEL
LOCKOUT
RS-232
PROTECT
CH1 CH2
APA754
AUDIOPOWERAMPLIFIER
CLIP
NORM
SIGNAL
1
ON
23456
Local
Monitor
PC
Shown with included
under-desk mounting
brackets.
Amplifier
Speak
ers
Projector
Plasma/LCD
Display
or
Extron
RGB 192V
Interface
Figure 1. Typical RGB 192 Application
The RGB 192 allows for furniture and under-desk mounting. It has an external switching power supply for worldwide
power compatibility.
Features
• Flexible mounting options — The interface can be mounted under a desk or podium, mounted on a rack, or
through a desk with optional mounting kits.
• Stereo audio — The interface outputs unbalanced PC stereo audio as line level, balanced stereo (or, depending on
a DIP switch position, mono).
• Level (boost) control — A front panel control compensates for signal losses from long cable runs.
• Horizontal centering control — A front panel control allows a horizontal centering adjustment.
• Sync processing — Using regular sync processing to allow centering control (H-shift) can create problems with
some digital display devices as a result of the sync delay. The Extron DDSP, ensures proper displays without altering
sync pulse timing or width. The sync processing type is selected via the front panel DIP switches.
• RGBHV, RGBS, or RGsB outputs — Select the output format via cabling setup and front panel DIP switch.
• Serration pulse switch — This DIP switch-selectable feature adds or strips the serration pulses from the output
signal to make it compatible with digital display devices. Use the serration pulse switch if flagging or bending occurs
at the top of the video display.
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2
RGB 192 Analog Computer-Video Interface
Installation
This section contains detailed installation and operation instructions. The following is an overview of the installation
process.
Install and set up the RGB 192V interface by following these basic steps:
1. Turn off all of the equipment (computers, remote controls, interface, projector or monitor, local monitor and speakers
or other audio device). Disconnect the power cords from the power source.
2. Install the rubber feet for tabletop use (see Mounting the Interfaces below).
3. Connect the input computer (display, local monitor, and audio) (see Connections and Switches on page3).
4. Set the front panel DIP switches (see Connections and Switches).
5. Connect power cords and turn on the output devices (projector, monitors, speakers), interface, and the source
computer.
6. Adjust horizontal centering and set the Level DIP switch to obtain the best picture.
Mounting the Interfaces
The interface provides several mounting options: tabletop placement, under-desk mounting, or through-desk mounting.
Follow the appropriate procedure below or on page 3.
Tabletop placement
For tabletop or desktop placement only, install the self-adhesive rubber feet (provided) onto the four corners of the
bottom of the interface enclosure.
Under-desk mounting
1. Secure the included under-desk mounting brackets to the interface with the machine screws that are already installed
in the side of the interface (see figure 2).
MO N I T O R H- SHIFT
SERR DDS P
NO MON.
M. AUDI O
SOG
LEVEL
RGB 19 2
CO M P UTER
AUDIO
1
ON
23456
Figure 2. Under-desk Mounting
2. Hold the interface with attached brackets against the underside of the desk or other furniture. Mark the location of
holes for screws on the desk.
3. Drill pilot holes 1/4 inch (6.4 mm) deep, and 3/32 inch (2 mm) diameter in the table or desk at the marked screw
locations from the underside/inside (concealed side) of the furniture, where the interface will be located.
4. Insert the four wood screws into the pilot holes. Fasten each screw into the installation surface until just less than
1/4inch of the screw protrudes.
5. Align the installed screws with the slots in the mounting brackets, and place the interface against the surface, with
the screws through the bracket slots.
6. Slide the interface slightly forward or back, then tighten all four screws to fasten it in place.
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3
RGB 192 Analog Computer-Video Interface
Through-desk mounting
1. If rubber feet were installed on the interface, remove them.
MONITOR H- S H I F T
SER R DDS P
NO MON.
M. AUD I O
SOG
LEVEL
RGB 192
COMPUTER
AUDIO
1
ON
23456
2. Insert the machine screws that are already installed in the side of the interface
through the slots in the through-desk mounting brackets, and loosely secure
the brackets to the interface (see figure 3).
3. Hold the interface with attached brackets against the underside of the desk
or table. With a soft pencil mark the location of holes for screws on the desk
based on the following:
Mark the opening approximately 1.0 inch x 5.7 inches (2.5 cm x 14.5 cm).
Figure 3. Through-desk Mounting
4. Cut out the material from the installation area with a jigsaw.
5. Check the opening size by inserting the interface part way through the hole. If needed, use a saw, file or sandpaper
to enlarge the hole. Smooth the edges of the hole with sandpaper.
6. Drill pilot holes 1/4 inch (6.4 mm) deep, and 3/32 inch (2 mm) diameter in the underside or inside (concealed side) of
the furniture where the interface will be located.
7. Secure the interface to the desk with the provided wood screws.
8. To adjust the height of the interface within the desk, slide the interface up or down to the desired position, then
tighten the screws that attach the brackets to the interface.
Connections and Switches
Figures 4 shows the front and rear panel of the RGB 192.
H-SHIFT
SERR DDSP
NO MON.
M. AUDIO
SOG
LEVEL
RGB 192
COMPUTER
INPUT MONITOR
L/MONO R
AUDIO
AUDIO
1
ON
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POWER
12-15V
1A MAX.
AABBCCDDEEFF
G
GH
HI
I
APower indicator
BAUDIO input
CCOMPUTER INPUT
DMONITOR Output
EH-SHIFT
FMONITOR Output
GPOWER connector
HBNC OUTPUT connectors
IStereo AUDIO output connector
Figure 4. RGB 192 Front and Rear Panel Features
APower indicator (see figure4) —
• Amber — Indicates power is applied.
• Green — Indicates that power is applied and a sync signal is present on the
input.
BAUDIO input — Connect the unbalanced stereo audio source (such as a
Tip (Left)Sleeve (Gnd)
Tip (Left)
Ring (Right)
Sleeve (Gnd)
computer or a CD player) to this 3.5 mm mini stereo jack for unbalanced audio
input. The image on the right shows how to wire the audio jack.
CCOMPUTER INPUT (see figure4 on the previous page) — Connect the analog
computer-video source to this 15-pin HD female connector.
NOTE: Most laptop or notebook computers have an external video port, but they require special commands to
output the video to that connector. Also, laptop screens shut off once that port is activated. (See the computer
user guide for details, or contact Extron for a list of laptop keyboard commands.)
DMONITOR Output — If desired, connect a local monitor or other device to this 15-pin HD female connector.
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4

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RGB 192 Analog Computer-Video Interface
EH-SHIFT (Horizontal Shift) — While viewing the displayed image, rotate this control to move the image to the right or
left on the screen.
NOTE: DDSP disables the interface’s Horizontal Shift control.
To use the display’s centering controls instead of the interface’s controls, set the DDSP DIP switch to On.
FDIP switches — This bank of DIP switches is used to configure the interface. The switches control:
• Level •DDSP
• SOG (sync on green) •Monitor or no monitor (ID bit termination)
• Serration pulses • Mono or stereo audio
NOTE: The default for all DIP switches is Off (down).
Level (and peaking) — The Level control alters the video output voltage to affect the brightness of the displayed
image. Turn the switch on and off while viewing the displayed image to set the level that provides the best picture
quality. If the interface receives a typical (0.7 volts p-p) analog computer video input, the output is as follows:
• On — 0.8 volts p-p with peaking
• Off — 0.7 volts p-p
Sync on green —
• On — The interface outputs a composite sync signal on top of the green video signal (SOG) via the G output
connector (RGsB).
• Off — The interface outputs separate horizontal and vertical sync (on the H and V connectors) and
composite sync (on the S connector) for RGBHV or RGBS.
Serration pulses — Many LCD and DLP projectors and plasma displays do not display properly if serration pulses
are present in the sync signal. Flagging or bending at the top of the video image is a sign that the serration pulses
should be removed.
• On — The interface outputs serration pulses in the vertical sync interval.
• Off — The interface does not output serration pulses.
DDSP — This feature may be necessary for digital display devices such as LCD, DLP (digital light processor) and
plasma displays. Use this option if the image is not displayed properly after other options, such as serration pulse
and video termination changes, have been tried.
NOTE: DDSP disables the horizontal and vertical centering controls.
• On — The interface uses DDSP, which does not process the sync signal.
• Off — The interface performs sync processing operations.
No monitor (ID bit termination) — This switch controls the input assigned to the local monitor output and ID bit
termination.
• On — ID bits 4 and 11 are tied to ground.
• Off — ID bits 4 and 11 are unterminated.
Mono audio output
• On — Monaural audio is output on the left channel only. When mono is selected, the right and left inputs are
combined and placed on the left output connectors.
• Off — Normal stereo output.

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RGB 192 Analog Computer-Video Interface
GPOWER connector — Plug the external 12 V power supply into this 2-pole captive screw connector. The power
supply is included with the unit. Figure 5 shows how to wire the connector.
NOTE: Do not tin the stripped power supply leads before installing the captive screw connector. Tinned wires are
not as secure in the captive screw connectors and could pull out.
Power Supply
Output Cord
Captive Screw
Connector
0.2” (5 mm) MA
X
SECTION A–A
Ridges
Smooth
AA
Figure 5.Power connector wiring
WARNING: The two power cord wires must be kept separate while the power supply is plugged in. Remove
power before continuing.
AVERTISSEMENT : Les deux cordons d’alimentation doivent être maintenus à l’écart tant que la source
d’alimentation est branchée. Avant de continuer, coupez l’alimentation.
• To verify the polarity before connection, check the no-load power supply output with a voltmeter.
HBNC OUTPUT connectors — Connect a coaxial cable between the display (projector or monitor) and these rear
panel BNC connectors.
• For RGBHV (separate H and V sync) output, connect the cables to five BNCs
RGBHV
• For RGBS (composite sync), connect the cables to four BNCs.
RGBS
• For RGsB (sync on green, SOG), connect the cables to three BNCs. Also
RGsB
select the SOG option on the front panel DIP switch (see item 6DIP switches
on the previous page).
IStereo AUDIO output connector — Connect an audio device, such as powered speakers,
to this 3.5 mm, 5-pole captive screw connector for balanced or unbalanced stereo or mono
audio output. Stereo or mono output is determined by a DIP switch setting on the front panel
(see DIP switch 6 in item 6, DIP switches). When mono is selected, the right and left inputs
are combined and placed on the left output connectors. Balanced or unbalanced outputs are
available for mono and stereo.
The illustration on the right shows how to wire the captive screw audio connector. The
connector is included with the interface, but you must obtain the cable.
1. Insert the wires into the appropriate openings in the captive screw connector.
2. Tighten the screws on top to fasten the wires.
ATTENTION: Wiring the audio incorrectly can damage the audio output circuits. Connect the sleeves to ground (GND).
Connecting the sleeves to a negative (-) terminal will damage audio output circuits.
ATTENTION : Un mauvais branchement du connecteur audio peut endommager les circuits de sortie audio.
Raccordez les manchons à la masse (GND). Le raccordement des manchons à une borne négative (-)
endommagera les circuits de sortie audio.
Unbalanced Output
Tip
See caution.
Sleeve
Tip
See caution.
Balanced Output
Tip
Ring
Sleeve (s)
Tip
Ring
OUTPUT
LR
OUTPUT
LR
Figure 6. Wiring the Audio Output Connector

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68-647-01 Rev. E
02 19
© 2002-2019Extron Electronics — All rights reserved www.extron.com All
trademarks mentioned are the property of their respective owners.
Worldwide Headquarters: Extron USA West, 1025 E. Ball Road, Anaheim, CA 92805, 800.633.9876
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.
Operation and Troubleshooting
Connect the power cords and turn on the displays (projectors or monitors), audio output devices (sound system), the
interface and the input device (computer). The image should appear on screen, and sound should be available. If not,
ensure that all devices are plugged in and receiving power. Check the cabling and switch settings, and make adjustments
as needed.
If the image does not appear or there is no sound
1. Ensure that all devices are plugged in.
2. Make sure that each device is receiving power. The interface front panel LED lights green if the interface is receiving
power and an active sync signal.
3. Check the cabling and the audio connector wiring and grounding, and make adjustments as needed.
4. For digital display devices (including LCD, DLP and plasma devices), try turning the DDSP DIP switch (switch 4) On
(up) or Off (down) on the front panel (see DDSP on page4).
5. To test the system setup and output, substitute a video test generator for the computer input. Unplug the input and
output devices and the interface power cords, replace the video source with a VTG, then reconnect power cords to
restore AC power.
6. Call the Extron S3Sales & Technical Support Hotline if needed.
If the image is not displayed correctly
•If the output image looks too green, the sync on green (SOG) DIP switch (switch 2) may be set to On (up), and the
display device may not be configured to handle SOG signals. Set the switch to Off (down).
•If the picture bends or flags at the top of the screen, set the serration pulse DIP switch (switch 3) to Off (down).
•For a display device that experiences intermittent glitches, try turning DDSP On (up) or Off (down) using DIP
switch 1 on the front panel.
•If the picture hangs off the edge of the screen, adjust the H-SHIFT (Horizontal Shift) (see page 4).
•If the edges of the image seem to exceed their boundaries or if thin lines and sharp edges look thick and fuzzy, try
changing the Level DIP switch (switch 1) to On (up). If the image is too bright, turn the Level switch to Off (down).
•If the image still does not display correctly, call the Extron S3Sales & Technical Support Hotline.
If the interface does not respond to controls
If the picture does not move on screen when the horizontal shift control is rotated, DDSP is in use. Set the DDSP DIP
switch (switch 4) on the front panel to Off (down).
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.