71BACKGROUND & DISCUSSION CONTINUED:
Information Systems has been coordinating individual vendors to complete the project. Staff
started with the longest lead time item, the camera tower. ASNAC indicated that they wanted
a tilt -over tower, to allow cleaning and maintenance of the cameras without requiring a bucket
truck and special training. A tower was selected and was ordered on 9127/07. The tower is
30' high and has anti -climb panels on the first 20 feet. The crank mechanism will be locked to
prevent unauthorized use.
Approximate lead time for the tower is 12 -16 weeks for fabrication and trucking, which means
installation will be late December or early January. Installation of the tower will be handled by
our Nash /Douglas signalization vendor. This will include two 2" conduits and a power conduit
running to the existing pole and box. The existing wooden pole is still required for attachment
of overhead wires for 117 volt utility power.
At ASNAC's request, staff was instructed to work to fix up the existing camera as a short-term
solution. Staff has purchased and installed a new analog camera and a Network Video
Recorder (NVR) with 500 Gigabytes of local storage. This is now installed in the box on the
existing pole.
While we are waiting for the tower to arrive, staff has ordered and received a wireless data link
and camera. The wireless link selected is a Motorola PTP -400. This system will provide a
very reliable 20Mhz data link from the pole to City Hall. The system works on the little used
5.8 GHz frequency (802.11A), and uses special modulation techniques ( "OFDM ") to provide
much more reliable connections than typical 802.11A bridges.
Due to the large number of trees blocking City Hall from the pole, we will probably send the
wireless data to the top of Joslyn Center, and then by existing fiber optic cable back to City
Hall. Most of the wireless hardware has already been received and is now being configured
and tested.
Staff has also received the first camera for the system and will be configuring it to work with
the wireless link. The camera is a Sony SNC -DF80N Digital Network Camera. Sony cameras
have a very good reputation for performing in difficult lighting situations. This camera connects
directly to the network to send video in JPEG, MPEG4 or H.264 formats. The camera provides
motion detection and local storage for pre -event recording, as well as bi- directional audio. It is
contained in a ruggedized waterproof outdoor enclosure. Since these cameras are quickly
available "off the shelf" from a number of vendors, staff decided to only purchase one for right
now, until we have verified that it will meet all of our requirements.
Following installation of the tower in early January, final equipment installation and testing will
take about 45 days, with final completion by the end of February 2008.
6. 71