Cisco TelePresence System 1100 Assembly Manual page 14

Lighting Recommendations
Lighting Recommendations
The cameras that are used in the CTS 1100 are designed to work well using normal office lighting.
However, Cisco recommends that you use well dispersed, ambient light throughout the room.
The ideal lighting environment is to use indirect fluorescent lighting that uses bulbs with a rating of
4,100 Kelvins (4100k). You can supply the lighting either through recessed fixtures or pendant fixtures.
Pendant lighting is best if your room is more than 9 feet (2.7 meters) high. Cisco does not recommend
direct lighting.
For best results, one set of lighting should be in front of conference participants, and one set should be
behind the participants.
The lighting in the room should be well controlled. You should block natural sunlight or other light that
could enter through glass or thin blinds.
Cisco strongly recommends that your fluorescent lighting use electronic ballasts.
It is important to consider the direction of the lighting in your room. For conferencing purposes, lighting
can come from three directions:
•
•
•
If measuring light in the room, the light range should be between 250 and 800 lux.
For specific lux measurement specifications, see
Table 2-1 Lighting Measurement Recommendations
Target Measurement
Illumination in Lux (= lm/m2)
Overall illumination 300-400 lux
Shoulder light/Direct 600-700 lux
down light
Acoustic Recommendations
The CTS 1100 microphones and speakers are designed to be used in rooms that have typical office noise
levels.
Cisco TelePresence System 1100 Assembly, First-Time Setup, and Field Replaceable Unit Guide
2-4
Key Light—This is the primary source of lighting and typically the strongest source of lighting. Key
light is built-in to the CTS 1100 light reflector.
Fill light—This light is created primarily from the overhead lights in the room, and secondarily from
the CTS 1100 light reflector. Fill light can reduce or eliminate shadowing on the conference
participants that is created by the key light.
Back light—This optional light is projected behind the conference participants. Back light is
generally indirect and creates separation between the participants and the room background.
Tolerance
50 lux
All lighting should be evenly
dispersed. There should not
be areas of 250 and 450 lux in
the same room.
Generally, shoulder lighting
should not be more the 400
lux greater than the overall
illumination of the room, and
should never exceed 800 lux
Chapter 2 Cisco TelePresence System 1100 Room Recommendations
Table 2-1.
Notes
Measured vertically with the light sensor
pointed at wall or intended camera location (not
pointed at the ceiling).
Measured horizontally at table height, with the
light sensor pointed at the ceiling
OL-19695-01