IC Realtime 4/8 H.264E HD SDI High Definition DVR - Manual (Page 219)

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24. For the HD-SDI 1080P 1.5U and 2U series product, system loses frames when record
local file or the playback is not smooth.
There are following possibilities:
z Close extra stream record function.
z Close snapshot function.
z Reduce monitor channel amount of the WEB.
z Close FTP upload function.
Daily Maintenance
z Please use the brush to clean the board, socket connector and the chassis regularly.
z The device shall be soundly earthed in case there is audio/video disturbance. Keep the
device away from the static voltage or induced voltage.
z Please unplug the power cable before you remove the audio/video signal cable, RS232 or
RS485 cable.
z Do not connect the TV to the local video output port (VOUT).It may result in video output
circuit.
z Always shut down the device properly. Please use the shutdown function in the menu, or
you can press the power button in the rear pane for at least three seconds to shut down the
device. Otherwise it may result in HDD malfunction.
z Please make sure the device is away from the direct sunlight or other heating sources.
Please keep the sound ventilation.
z Please check and maintain the device regularly.