Mitsubishi Electric DX-TL308E User Manual page 7

Notes for constructing a surveillance system using this unit
• This unit can be controlled by external devices via the external connector, RS-232C connector, or LAN connector.
In addition, external devices can be controlled via the external connector, RS422 connector, or RS-232C connector.
These functions allow this unit to fl exibly support an advanced security system. However, depending on the settings
of this unit or connection or combination with external devices, this unit or externally connected devices may operate
wrongly, causing adverse effects on the entire surveillance system.
• When constructing a surveillance system using this unit, you are recommended to check its operation by connecting or
combining it with other devices in advance.
• Don't use the alarm function of this unit for the purpose of making serious decisions or for applications involving human
lives.
• When this unit becomes unable to recognize an external device in recording because of a power failure, voltage drop,
or other failure, the recording point may move to the HDD inside this unit or other HDD. To prevent such symptom, it is
recommended to use an uninterrupted power supply or other similar device.
• When you unplug the power cord or turn off the breaker during recording, the HDD may be broken or recorded data
may become unable to be played back. When you turn on and off the breaker every day, program the timer recording
to be performed while the breaker is on and don't turn off the breaker during recording.
• When the user or any third party uses external devices wrongly, or external devices are affected by electric noise or
they are damaged or repaired, the saved data may be lost. Mitsubishi doesn't take any responsibility for damages
related to such data loss.
• By connecting various external HDDs to this unit, you can expand the memory or use them as a copy device. However,
when you perform recording, playback, or copy at a high rate using this unit, recording or playback data dropout or
other failure may occur depending on the connected device because of slow data transfer or slow response. Be sure to
check for such failure before starting the practical operation of the unit.
• Don't use the function to control the powers of external devices using the bus power of this unit.
• External devices you want to use may not be suitable for the intended application of this unit. For details, you are
recommended to contact your Mitsubishi dealer.
• When connecting external devices, be sure to secure the connected cables using the supplied clamp bands. When the
cables are disconnected or not connected fi rmly, the system may become unstable or images may not be recorded.
• Don't disconnect the cables while this unit is running. Otherwise a failure may be caused.
• Be sure to perform test recording before starting the practical operation of this unit, and also check regularly that the
recording is performed correctly according to the settings during the practical operation.
• Mitsubishi doesn't compensate for data not recorded or not played back correctly because of a failure occurring in this
unit or connected devices during the use of this unit.
• As a preparation for unexpected breakdown or accident, you are recommended to make regular backups of important
recordings. Though digital signals don't deteriorate, playback or recording may become impossible because of aging
deterioration of discs depending on the storage conditions.
For important recordings
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