Campbell CC5MPX Manual de instrucciones descargar pdf (Pagina 60)

CC5MPX Digital Camera

7.7.3 Self-Timed Capture2

The settings and parameters are the same as Self-Timed Capture1. Refer to the

previous section (7.6.2).

7.7.4 External Trigger

The External Trigger Sub Tab (see Figure 7-31) is used to configure the camera to

capture still images or video using an external signal that is applied to the External

Trigger input line.

The External Trigger can be configured for an active HIGH signal or an active

LOW signal (see Section 7.3.5). The capture is triggered by the transition from the

inactive state to the active state. The minimum required pulse period is 10msec.

Preferably pulses should be short in duration (only a few seconds). The voltage

levels are:

x Low Level: <0.65 V (-20 VDC Absolute Min)

x High Level: >2.0 VDC (+20 VDC Absolute Max)

Leaving the signal on the External Trigger in the active state will prevent the

camera from entering into a low powered state. If an external device is allowed to

keep the camera in its Fully On State, power consumption will be greatly affected.

When the camera is fully on and no other process is taking place, the time from the

transition of the signal from inactive to active, to the time a picture is captured or

video is started, is typically less than 100msec. The description of the parameters

for the External Trigger setup is outlined in Table 7-9 External Trigger Variables.

7.7.4.1 File Transfer Queuing

When perfoming multiple captures and transfers off the camera in rapid succession

the camera will queue file transfers (i.e. send via FTP, then SMTP, then PakBus).

File queueing separates the transfer functions from image and video capture.

The camera can capture up to 5 images or videos in parallel with the file transfers

all taking place at the same time. For this feature to work an SD card must be

present.

7.7.4.2 External Trigger Video Pre-Recording

Video pre-recording allows the camera to record up to 30 seconds of video leading

up to a related trigger event. This feature can only be used with external trigger and

motion detection capture events.

The external trigger configuration page includes an option labeled Pre-Record In

Seconds. By entering a value between 1 and 30 in this field the CC5MPX will

begin buffering video in its internal memory. When an event occurs, the CC5MPX

will store the set number of seconds of video to file and then continue recording the

live video until the number of seconds has elapsed.

The use of pre-recording does impose some limitations on the functionality

available in the CC5MPX:

x The pre-recording feature can only be used when the camera is in the

Fully On power mode.

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Campbell CC5MPX Manual de instrucciones Pagina 60