Videoswitch Vi200 - Manual (Page 37)

Digital Recorder
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9.6.2 Covert Cameras
One or more cameras may be set as covert (hidden). This means that, unless a user logs
on with covert access rights, those cameras will not be visible in live or replay.
When setting covert cameras, remember to also do the following:
• Remove covert rights from the “Logged Off Access Rights”
• Remove covert rights from all of the users who should not have access
• Remove Config Menu rights from all of the users who should not have access
• Remove BURN rights from all of the users who should not burn CDs (which have
the covert cameras on)
• Remove EVENT rights from all of the users who should not see the event list (which
may have activity and alarms relating to covert cameras)
Having correctly set up the Access Rights (see section 9.6.1), if you now want to view covert
cameras, enter a password that does have covert access rights. Remember to log off (enter
no password) when you have finished viewing. Do not use Camera 1 as a covert camera.
9.6.3 Camera Inputs
9.6.3.1 Record Brightness
The brightness of the images being recorded can be adjusted to compensate for cable
losses. Adjust the brightness as required for each camera.
• If the displayed image (which is digitised) is too dim or is tearing, increase the
brightness setting.
• If an image is too bright, decrease the brightness setting.
9.6.3.2 Record Colour Boost
The colour content of the images being recorded can be adjusted here to compensate for
cable losses. Adjust so that the colour content of the displayed image is not too weak or too
strong.
9.6.4 Record Audio
A single channel of audio recording and playback is available, optimised for speech. Two
audio inputs are provided. Only one of these should be used at a time:
• Microphone
This is suitable for an electret microphone
• Line
This is suitable for the output from a microphone pre-amplifier
The audio output is suitable for feeding to a power amplifier (with volume control) and
speaker. Multi-media PC speakers with built-in amplifiers are ideal.
Refer to section 10 for details of connecting the audio inputs and output.
If you wish to use the audio record/play facility set this option to YES. Otherwise set to NO.
Audio recording uses a about 350Mbytes of hard disc per day which amounts to about 11
Gbytes per month. If you do not need audio, the space saved will be used for video
recording. Once set on or off, this option should not be changed during normal use as this
may affect recall of previously recorded video images.