Record rate
The record rate is the amount of pictures recorded to disk in a second, or pictures
per second (PPS). This is a system wide figure, so whether 1 or 4 cameras are
recorded, the record rate remains the same. The update rate per camera can be
worked out using the record rate:
Update rate
=
No. of cameras
Record rate
A table of common record rates can be found in Appendix 1.
Hard disk capacity
Analogue VCRs use 3-hour tapes which record a finite number of images. Unlike
a VCR, the number of images that can be recorded to a digital multiplex recorder
can be increased by using a larger capacity hard disk. At the time of writing, D4 is
available in 40 and 160GB hard disk sizes.
Using a larger hard disk will allow image quality, recording rate, or recording time
to be increased. For example, a 40GB disk can record for 8 days at the default
settings (24-hour time-lapse mode at S-VHS quality).
Calculating recording time
D4 calculates the recording time automatically when the record rate and image
quality are entered. Alternatively, an interactive record calculator is available for
download from our web site:
www.dedicatedmicros.com
Quick Install
D4 can be installed in as little as 4 steps, and being plug-and-play, cameras will be
detected and recorded automatically.
SERIAL
POWER
485 BUS
NET
SCSI
STEP 1. Connect cameras
Connect cameras to the video inputs marked VID1 to VID4. Use the bottom row
of connectors for looping through to other equipment.
STEP 2. Connect monitors
Connect the video output marked MON A to the Main monitor (digital playback
and multiscreens).
Connect the video output marked MON B to the optional Spot monitor (analogue
full-screen images).
STEP 3. Connect the external devices
If external devices need to be connected to D4, go to the next section -
'Connecting external devices', before proceeding to Step 4.
STEP 4. Connect power
Once the D4 is in its final position and all external devices have been fitted and
powered, connect the PSU to the rear of the unit and apply the power. The power-up
procedure may take up to one minute before D4 can be used.
will now record all cameras without any further
programming!
OUT
A
IN
B
LINE
MIC
ALARM/RELAY
MON
VID 1
VID 2
VID 3
VID 4
5