MITSUBISHI ELECTRIC DX-TL4516U - Manual (Page 54)

51
Operations
When the pre-alarm recording time setting exceeds
the maximum pre-alarm recordable time, the pre-alarm
recording time display turns red. Set the time within the
maximum recordable time. You can use the recording
rate or picture grade for adjusting the pre-alarm recording
time. Even if the time is set exceeding the maximum
recordable time, the actual pre-alarm recording is
performed for the maximum recordable time.
When the alarm area is set, the alarm recording and pre-
alarm recording are made in the alarm area. To playback
the recorded data, set the <Select Source Device> (
page 39) to “Alarm.”
In the case that the alarm recording mode is set to “Alarm
CH,” recording with all the camera numbers set for alarm
recording may not be possible when pre-alarm recording
is carried out during normal recording.
To perform pre-alarm recording by all the camera
numbers set for alarm recording, use alarm recording
mode without using normal recording. To perform with
normal recording, set “Alarm Mode” to “Alarm Plus.”
Pre-alarm recording is carried out at the recording rate of
normal or alarm recording set for that time period and with
the picture grade set for alarm recording.
Recording time for pre-alarm recording is based on the
alarm recording setting. For pre-alarm recording which
is started during normal recording, the recording time
may be shorter than the specified time depending on the
normal recording setting.
step 6. Set the alarm recording time in “Post-Alarm
Duration.”
Manual: Continues alarm recording until the
ALARM IN terminal is not grounded.
step 7. S e t t h e r e c o r d i n g c a m e r a f o r e a c h s e n s o r
connected.
• Select “View” and display the overview screen
to check the settings of all the sensors.
The multiple camera numbers can be set for one sensor
input.
step 8. Set the trigger of alarm recording for each sensor
connected.
External & MD-A: Starts alarm recording when
the motion A is detected while the ALARM IN
terminal is grounded.
External & MD-B: Starts alarm recording when
the motion B is detected while the ALARM IN
terminal is grounded.
External: Starts alarm recording only when the
ALARM IN terminal is grounded.
External / MD-A: Starts alarm recording when the
ALARM IN terminal is grounded or the motion A is
detected.
External / MD-B: Starts alarm recording when the
ALARM IN terminal is grounded or the motion B is
detected.
MD-A: Starts alarm recording only when the
motion A is detected.
MD-B: Starts alarm recording only when the
motion B is detected.
When setting the trigger to “MD-A,” “MD-B,” “External /
MD-A,” “External / MD-B,” “External & MD-A,” or “External
& MD-B,” the motion detection function becomes active
immediately after exiting <Set Recording Pattern A
(Normal/Timer) to D (Timer)>. To stop the input of alarm
signals, set the “Alarm Input” setting in the <Recording>
menu to “Off.”
step 9. Set the PTZ camera preset for the sensor of which
trigger is set to “External” on step 8.
Preset 1 to 16: When the ALARM IN terminal
corresponding to the sensor is grounded, the
angle of corresponding camera is adjusted to the
preset point set on this step. (The camera angle
is not adjusted when the trigger is set to the item
other than “External.”)
– – –: Does not adjust the camera angle.
• Select “View” and display the overview screen
to check all the settings set on steps 8 and 9.
Alarm recording
• When the alarm recording or the emergency recording is
executed during timer recording, the end time of the timer
recording is extended until the alarm recording or the
emergency recording is completed.
• When the alarm recording trigger is set to “External /
MD-A” or “External / MD-B,” the priority is given to the
latest alarm input.
• When the alarm recording trigger is set to “External /
MD-A” or “External / MD-B,” and the alarm recording time
is set to “Manual,” the alarm recording stops 2 seconds
after the input of motion detection even if the ALARM IN
terminal is being grounded. (When the alarm recording
time for this recording according to the motion detection is
set to “Manual,” the actual recording time is 2 seconds.)
• When power failure occurs during alarm recording
or emergency recording, the alarm recording or the
emergency recording is cancelled after returning from the
power failure.
• When alarms are input for multiple sensors at the same
time, not all the alarms may be registered to the alarm list.
Frame recording and field recording
• In NTSC signal system, one picture is consist of two
screens, odd and even. The unit records only the
screens of odd in case of field recording. In case of
frame recording, both of the screens (odd and even) are
recorded.
• Frame recording is suitable for storing the data in the
high picture quality, however, the data capacity is twice
as large as that of the field recording of the same picture
grade (1 frame = 2 fields). The picture may be looked
like vibrating because one picture is consisted by two
screens.
Alarm Input
This item is used to stop the alarm input manually. When
setting “Alarm Input” to “Off,” the alarm input is stopped for
5 minutes. To set the <Recording> menu while the alarm
recording occurs continuously, stop the alarm input first to
stop recording. “Alarm Input” function is available for ALARM
IN terminal on the rear panel, motion detection, emergency
recording, and communication port. To cancel the prohibition
of alarm input manually, set it to “On” and then exit the
<Recording> menu. It is cancelled automatically after 5
minutes.