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CLASSROOM
VIDEO PLAYBACK
The
preferred method for video playback is through the cable system
that runs from the
Learning Resource Center to the various classrooms. A
cable playback is indicated whenever a faculty member writes
"VIDEO PLAYBACK" on the Equipment Loan Form, but does not
check "video player." A video player is ordered only
when an instructor wants to have a video unit physically moved
to the classroom.
Because
the number of VCR's is limited, the LRC encourages cable playback
to the TV’s in the classrooms. This is the alternative
to delivering VCR's to classrooms and leaving them there..
Students may request video playbacks without a faculty member
signature if the playback will be through the cable system
and no equipment leaves the LRC.
| MAIN
STEPS |
KEY
POINTS |
| Turn
on the VIDEO AMP. |
A
WHITE light comes on. Video amp must be turned on in order
for the classroom to receive TV picture. |
| At
the AUDIO and VIDEO patch boards, plug in both audio and
video cables for the video cassette that you will use. |
Two
video cassette units are available. They are color-coded.
Video cassette Unit 1 is coded GREEN. VCR Unit 2 is coded
RED.
Each unit has both an
AUDIO and a VIDEO cable. Each must be plugged into a
separate AUDIO and VIDEO input jack on the patch boards.
There are AUDIO and VIDEO inputs for each classroom.
Be certain that the
two input jacks used are for the room requiring the
video playback. The video and audio cables are marked
"V " and " A" respectively. These color-coded cables
may be plugged in and unplugged as needed.
These are the only cable
connections that should ever be changed by LRC Assistants.
However, push in any unlabelled connection if it appears
to be loose.
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| Operate
the VCR in the usual manner. |
The
LRC Assistant must study the instruction manuals for all
of the video machines in the LRC and be able to troubleshoot
when equipment fails. If a problem occurs with a particular
video cassette unit, be prepared to switch the tape to
the other unit. |
| Turn
on the TV monitor which ha the same color code as the
VCR. |
The
picture will appear on either channel 4 or channel 6 of
the TV, depending on the signal sent to the TV by the
video cassette unit. The monitor TV’s receive their
signals by RF connections, which is separate from the
connections to the cable system. Therefore, picture and
sound from the monitor are not necessarily indicative
of the quality of the signal going to the classroom. |
| Check
for classroom reception . |
Use
the intercom to make sure that the audio is reaching the classroom.
The volume must be turned up on the classroom TV set.
Basic troubleshooting:
- If neither audio
nor video is being received in a classroom, ask the
instructor if the set is plugged in and turned on.
- The classroom TV’s
are not affected by the channel selector switch on
the back of the classroom TV.
- The black video
cable in the classroom must be connected to the VIDEO
IN input.
- The gray audio cable
in the classroom must be connected to either AUDIO
IN or PHONO IN, depending on the model of the TV.
- On the back of each
set in the lower left is a selector switch which must
be set for CCTV or EXTERNAL VIDEO, depending on model.
Regardless as to how the switch is labeled, the switch
must be in the DOWN position.
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