Approach Tech DVR-3024 manual 30F/S 30 fields per second, 15F/S, 10F/S, ALM Type, ALM Duration

REC RATE:

This option is for the purpose of adjusting the number of pictures recorded every second into a storage disk when an alarm input is activated. For an NTSC unit, there are 5 different record speeds you can select from:

30F/S (30 fields per second), 15F/S, 10F/S,

6F/S, and REMAIN. For a PAL unit, there are

5 different record speeds you can select from:

25F/S (25 fields per second), 12.5F/S,

8.3F/S, 5F/S, and REMAIN. If you select REMAIN for use, the device will record images at the same speed as set on the REC page.

REC QUALITY:

This option determines the image quality to be recorded when an alarm input occurs. There are 4 levels of image quality to choose from: BEST, HIGH, STANDARD, and BASIC. The table below shows the level of image quality with the corresponding compression ratio and image size.

AUDIO:

This option determines the way to record sound if necessary.

OFF: Disables AUDIO recording.

11KHZ: Enables AUDIO recording and records at the 11KHz sampling rate. 22KHZ: Enables AUDIO recording and records at the 22KHz sampling rate.

NOTE: Audio function can only be activated in the following refresh rate in NTSC(PAL): 30(25), 15(12.5), 10(8.3), 6(5), 2.7(2.7) fields/sec.

ALM TYPE:

This option allows users to set a type of alarm input corresponding to the sensor signal in use.

NO: Normally Open. This is to be used with the type of alarm sensor whose contact remains open in normal conditions and closes in case of activation.

NC: Normally Closed. This is to be used with the type of alarm sensor whose contact remains closed in normal conditions and opens in case of activation.

ALM DURATION:

This option allows users to set alarms for a certain duration. You can select one of the six following options: 0 SEC, 30SEC, 1 MIN, 5

MIN, 10 MIN, and NON-STOP.

Duration Set ting

NOTE: Recording may be interrupted during

Alarm-in or Alarm-out.

PRE- ALARM:

This option determines that images prior to an alarm occurs will be recorded in the hard-disk drive. When an alarm is triggered the device will record the image prior to the alarm for 5 seconds (10 frame / sec).

ON: Enables this function.

OFF: Disables this function.

NOTE: If the device is already under recording mode before an alarm occurs, the pre-alarm recording will not take effect.