[ Home ] [ Up ]

KPIX-TV Master Control

1992 (David Carroll Electronics, Inc.)

Design-Build installation of KPIX's new 160 x 160 (3-level) BTS routing switcher, for their stereo audio upgrade. Also included was a 100 x 40 auxiliary router. We won the job with our unique designs for audio cross connect hardware, utilizing our special "wide racks" with swinging - access ADC ultrapatch panels in the rear. This design allows the highest possible interconnect density within a single rack while maintaining rear access to equipment mounted in the front of the rack. It also increased the amount of off site prefabrication we could accomplish, an important point for the station which had to stay on the air during install. Six wide racks were included in the project. Also included was an all custom cable tray system which provided over the top cable management, with controlled radius bends at all rack cable entrances.

DCE was subsequently called back to complete another portion of the video wiring cross connect.

Customer: KPIX-TV CH 5, San Francisco
Project Engineer: David Carroll
Installation supervisor: David Nahman-Ramos
Date Started: June 1992
Completed: Sept 1992 (expansion Feb 1993)
Scope of work: Supply and install Audio and Video Distribution and patch; custom cable management hardware Subcontractors: None

	Front of the Audio DA and patching racks
	Rear of one of the audio racks showing unique custom cable management hardware: vertical plate and clamping bars in the rear of the rack, and horizontal cable tie panel attached to the rear of the Benchmark Systems 1000 distribution amp frame. As a side note, the horizontal panels were prewired off site using a special wiring jig, and brought onsite assembled to reduce installation time. Each assembly consisted of a wired frame with 8 24-pair cables, wired to Elco cables on the patch side and ultrapatch on the cross connect side.
	Detail of one of the Benchmark Systems distribution amps with custom wiring frame.
	Rear of one of the Audio Patchbay racks showing Audio Accessories Inc. Elco connectorized patchbays, ADC Corp UltraPatch cross connect panels mounted on custom DCE swing out cross connect frame. Swing out is completely contained within the rack cabinet and allows access to front and back plane of cross connect as well as rear of equipment mounted in front of the rack.
	Rear view of the Video equipment bulkhead rack where the entire, timed patch and router system terminates.
	Rear view of Video Patch bay rack showing custom cable management hardware. Video cable was Belden 1694A Here's what we replaced! The master control had been on the air for 20 years and they had added and added and added...
	Rear view of BTS video router (one of 4 racks)
	A view over the top of the custom built cable tray mounted to the top of the racks. It interconnects the Audio Patch rack, Audio DA rack, Video DA racks, and Video router racks. All timing loops were stored in the tray on an unused stub.
	The fact of timed cables means you have to spend extra time on dress because the cables all have to be electrically the same length. You can't trim them to fit. Even so we managed to make a nice parallel dress pretty much everywhere.

[ Home ] [ Up ]