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CTS Training
1. Introduction to A/V Support
& Classroom Technology
Matthew Young
Instructional Technology Specialist, CTS, IS&T
Boston University IT Help Center; Classroom Technology Services
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Boston University IT Help Center; Classroom Technology Services
3. Tech Training Overview
• Room Technology Levels • Voice Amplification
• Cables 101 • Odd Equipment
• Images on Screens • Questions, Comments,
Concerns
• Built-in Control Systems • Break-out and hands on
Boston University IT Help Center; Classroom Technology Services
4. Room Technology Levels
Level Descriptions AV Equipment
1 Fixed access to network resources, low-level Overhead projector; manual screen; blackboard (or whiteboard);
projection equipment, and optical presentation fixed lighting
media equipment for a single
presenter. Wireless network access for
students.
2 Fixed access to network resources, projection LCD/DLP Projector; overhead projector; manual screen;
equipment, presentation media blackboard (or whiteboard); VCR/DVD combo unit; stereo
equipment. Wireless network access for program audio; laptop connections; auxiliary video connection;
students. fixed lighting
3 Level 2 above plus speech audio capability. Level 2 plus electric screen; speech audio with wired or wireless
microphones (lavaliere/handheld); lectern with media-switching
control panel; adjustable lighting control
3.5 Level 3 above plus either slide projection Level 3 plus either 16mm/slide projection capabilities or
capabilities or PC/Sympodium in lectern. PC/Sympodium in lectern
4 Level 3.5 above plus lecture capture and/or Level 3.5 plus lecture capture capability (video/computer/audio or
video conferencing capabilities. computer/audio) and/or video conferencing.
5 Level 3.5 above plus a computer for each Level 3.5 plus student PC workstations (option for laptop
station in the classroom. Ability for faculty connection) or wireless laptop cart.
member to control and project student
workstation content.
Boston University IT Help Center; Classroom Technology Services
5. Cables 101
• Wires in a wireless world
– What’s up with all these cables?
• Cables and their connectors
– How they look and how they are used
• Care and Feeding
Boston University IT Help Center; Classroom Technology Services
6. 3 Prong Extension Cord
Notice how relaxed the coil is; large diameter and no twist. The pointy end
goes into the wall. Do not unplug by pulling on the cord, grasp the plug. Keep
extra length coiled near the wall or equipment to avoid tripping hazard.
Boston University IT Help Center; Classroom Technology Services
7. VGA – Still the standard; now with audio
Be sure to insert and remove straight, or risk bent pins. Also note that the
connection is trapezoidal and be sure to align properly. The screws are very
important in cases where the female connection is positioned vertically.
Boston University IT Help Center; Classroom Technology Services
8. 3.5mm TRS aka Headphone
Carry signals on 1-3 channels, usually audio. Our VGA cables have one
built in for connecting laptop headphone jack to computer audio port on
input panel. Also comes in larger ¼” size.
Boston University IT Help Center; Classroom Technology Services
9. HDMI – The new hotness
Carries both audio and video signal. Compatible with high definition
devices and HDCP. May be converted directly to/from DVI without audio.
Silly expensive cables, do not lose.
Boston University IT Help Center; Classroom Technology Services
10. Mac Adapters – Why don’t they come with the laptop?
Clients wishing to connect an Apple laptop will need the appropriate adapter.
Most recent models use Mini DisplayPort; older models may use any number
of others. Refer to http://support.apple.com/kb/HT3235. iOS devices require
a different specialized adapter.
Boston University IT Help Center; Classroom Technology Services
11. RCA – Aka Yellow, Red, White
Connect DVD/VCR. Typically color coded for convenience: yellow for
composite video, red for right audio channel, white for left or mono audio.
This is an analog signal. With HD component video, the video is split into 3
channels and carried on separate wires.
Boston University IT Help Center; Classroom Technology Services
12. XLR – Microphones and broadcast audio
They make a satisfying click when fit together securely. When used with a
microphone and amplifier these cables carry phantom power and
produce a loud hum/buzz if there is a faulty connection or grounding.
Boston University IT Help Center; Classroom Technology Services
13. Cat5 with RJ45 connector - Ethernet
Plug it in to connect to the network. Or just connect to 802.11x like
everyone else.
Boston University IT Help Center; Classroom Technology Services
14. Care and Feeding
• Take time to align ends when making
connections and avoid bent pins.
• Grasp at the connector when unplugging, not
cord. Make sure to activate any mechanical
latches.
• Coil in loose loops using the natural lay of the
cable. Do NOT wrap around your arm.
• Report and replace damaged cables.
Boston University IT Help Center; Classroom Technology Services
15. Images on Screens
• Projectors
• TVs
• Overhead transparency projectors
• Document cameras
Boston University IT Help Center; Classroom Technology Services
17. Projectors
• Connect with VGA, HDMI, or RCA
• Can display common computer
resolutions, including 1024x768 and
1280x800, and HD video from a compatible
source.
• Portable projectors have speakers that are
controlled through the remote control.
Boston University IT Help Center; Classroom Technology Services
18. Televisions
On a Cart On the Wall
Connect and control from wall plates:
Boston University IT Help Center; Classroom Technology Services
20. Overhead Transparency Projector
• Acetate roll across top
• Power switch in front
• Focus knob on arm
• Spare bulb inside
• Top swings up
• Do not touch hot bulbs
• Lever in front to swap
to spare bulb
Boston University IT Help Center; Classroom Technology Services
21. Document Camera
• Connect using VGA
• Can go between laptop
and projector.
• Choose to display
camera or laptop image
using buttons or remote
Boston University IT Help Center; Classroom Technology Services
22. Built-in Control Systems
• Project from computer
using VGA or HDMI
• Show movie using
DVD, VCR, or Combo
Player
• Connect using the wall
plate, or auxiliary inputs
on the rack.
Boston University IT Help Center; Classroom Technology Services
23. Built-in Control Systems
• In the Cabinet • In the BUBBA
Boston University IT Help Center; Classroom Technology Services
25. Power ON
Press the Power button on the side of the panel. Press the ON button on
the touch display. A progress bar appears while the system warms up.
Boston University IT Help Center; Classroom Technology Services
26. Select source - Laptop
Press the Laptop tactile button to connect a computer using VGA or HDMI.
Choose between the inputs on the wall panel or rack. In later models, these
are separate choices on the side buttons, not the touch menu.
Boston University IT Help Center; Classroom Technology Services
27. Laptop - WALL
This nested menu allows the user to select between using HDMI or VGA.
Selecting RACK brings up a similar menu.
Boston University IT Help Center; Classroom Technology Services
28. Laptop – Wall – PC IN
Notice the arrows on the graphic pointing to the inputs that should be
connected. The resolution of the input signal is displayed and verifies a
connection.
Boston University IT Help Center; Classroom Technology Services
29. DVD/VCR
DVD and VCR controls are available through the touch panel. Switching
between playing a DVD and VHS can be tricky, it may be necessary to
switch the input at the machine.
Boston University IT Help Center; Classroom Technology Services
30. Volume
Use the up/down arrows to control the volume. Press mute to silence
the system – the button will turn WHITE; press it again to restore sound.
Use Return to go back to the previous screen.
Boston University IT Help Center; Classroom Technology Services
31. Video Mute
Use Video Mute to temporarily disable the projector display.
Boston University IT Help Center; Classroom Technology Services
32. Video Muted
Press and hold to restore the picture. Don’t forget.
Boston University IT Help Center; Classroom Technology Services
33. The Newer Crestron Panels
Mostly the same. Common choices are on the side of the panel instead
of nested in menus. Otherwise, the same for all intents and purposes.
Boston University IT Help Center; Classroom Technology Services
34. Voice Amplification
• Podium
Microphones
• Wireless
Microphones
• Lavalier
Microphones
• Portable
Amplifiers
Boston University IT Help Center; Classroom Technology Services
35. Other Equipment
• Slide Projector • 16mm Film Projector
Boston University IT Help Center; Classroom Technology Services
36.
37. Who You Gonna Call?
• Doug Bartlett
• Earle Harmon
• Chris Rennie
• Stephen Siteman
• Damon Carlson
• Josh Kaufman
• Craig McDonald
• Matt Young
Boston University IT Help Center; Classroom Technology Services
