7-4
Cisco TelePresence System Administrator Guide
OL-21845-01
Chapter 7 Troubleshooting the CTS 1100
Managing CTS 1100 Hardware Setup
Selecting the Light Level
When adjusting the images on the CTS display screens, you must take the color temperature of the
ambient light in the room into consideration.
Sources of light in most rooms are produced by fluorescent fixtures or incandescent light bulbs that use
tungsten filaments. Each of these light sources, and the amount of light in terms of lumens or watts,
produces a different color temperature. This color temperature is sometimes expressed using terms such
cool, warm, or daylight, but can be expressed more precisely in kelvins (K) as a numeric value.
The following temperatures can be selected for adjusting the image on the Cisco TelePresence display
screens:
•
3500 K
•
4000/4100 K (recommended)
•
5000 K
•
6500 K
•
7500 K
Tip
In many cases, the color temperature is printed on the light bulb. If you are unable to ascertain the type
and color temperature of light bulbs in the meeting room, experiment with color temperature settings
until the color and images on the display screen look lifelike.
Tip
It is OK to try a few different color temperatures to see what looks best in the room. Remember, the Color
Temperature setting only effects how the local participants see the display, it does not effect the way the
room looks to remote participants.
Adjusting Your Display
To adjust your display:
Step 1
Log in to the Cisco TelePresence System Administration interface.
Step 2
Choose Troubleshooting > Hardware Setup.
Step 3
Click the Displays radio button. A test image appears on the screen.
Step 4
Click Start in the Testing box to start the adjustment process. The Current Color Temperature test screen
appears, as shown in
Figure 7-2
.
Note
Each display in the meeting room should be showing a set of horizontal grey bars and that display's
relative position. The current color temperature setting is displayed.
