18[N-REC]: indicates the current record schedule is set as NO-RECORD mode.[39%]: indicates the percentage of hard drive space currently used.[M]: HDD info ([M] Master Hard Disk; [S] Slave Hard Disk)6.2Audio Recording[ ]: indicates this video channel is bundled with an audio port, and the audio input is on.[ ]: indicates the audio input is off.[ ]: indicates the audio is being recorded and the audio input is on.You can press the [MUTE] button on the front panel to mute the audio output. The audio inputcan be still recorded while the output is muted. Press the [MUTE] button again to preview theaudio.If you press the[●REC]button the DVR goes into REC mode. The DVR will continuerecording based on the set ‘Record Schedule’. In record mode you can change channel view andswitch the audio channel. However you can not playback while in record mode.6.3 Stop RecordingPress the [■] stop button and the DVR will stop recording. If the password protection function isenabled the system will prompt you to input password. Only the correct password can stop therecording process.6.4 Estimated Recording LengthEstimated record time based on 160GB HDD using 9 cameras in HoursStandard Quality 60fps 48fps 32fps 16fps 1fpsNTSCHighest 27 34 51 103 1653High 39 49 73 146 2346Normal 47 59 89 178 2853Lower 53 66 100 200 3200Standard Quality 50fps 36fps 24fps 12fps 1fpsPALHighest 28 39 59 118 1422High 40 55 83 166 2000Normal 49 68 102 203 2444Lower 54 76 114 228 2733