Digital / Analog Products - Video Switching Control Card

Video Switching Control Card is a custom Designed card with controls for switching of two channel video input. Each of the channels has two video inputs, which are processed identically. The video inputs are given to an Analog comparator to generate TTL controls for external RF Switch and to a 2:1 video multiplexer used for selection of the video source. The analog comparator compares the magnitude of the two video inputs on the channel and produces a digital control output. This output is used as select to a 2:1 Multiplexer and also buffered to be used as switching control for the RF switch. The selected Video output from the multiplexer is amplified and made available on the PCB mount 30 pin Airborne Connector

This VME based slave card capable of Interfacing to two External Primary Radar Sources and two External Secondary IFF Sources.

Primary Analog:

Primary Analog video inputs (LIN/LOG/MTI) from the two radar sources shall be adjusted for gain and offset using front panel potentiometers. Then the Primary Video signals shall be scaled down to and given out on VME-P2 connector to the next card in the system.

Secondary Analog:

Secondary Analog Video inputs (IFF) from two radar sources shall be adjusted for gain and offset using front panel potentiometers. Then the Secondary Video signals shall be scaled down to and given out on VME-P2 connector to the next card in the system.

Digital inputs:

Digital inputs from the primary radar sources, namely ACP, SHM and SYNC shall be conditioned by means of protection, pulse discrimination and validation. Then the buffered Digital signals shall be passed out VME-P2 connector.

Video signals and Digital signals shall be fed back to the card after being routed in another associated card of the system. The card shall conduct POST by comparing the looped back signals and the input signals. The card shall also conduct on-line diagnostics by comparing the looped back signals and input signals. Hence, the Card operates in three modes: POST, Normal and On-Line Diagnostic.

Control and software programmability by the host is through VME interface, since this card would be used in a VME back plane in combination with other associated cards.

The RVIF Board is mainly used in Radar Systems for communicating two signals. The board has two channels namely channel 1 and channel 2 for communicating signals with the radar.

On-board features include 1 Megabit (128 K x 8-Bit) Uniform Sector Flash memory, 1K (128x8) SPI Serial EEPROM, In-System Programmable Configuration PROM, High performance Spartan-IIE Xilinx FPGA which has densities ranging from 71,000 to 2,00,000 system gates and System performance is supported beyond 200 MHz, High performance CPLD which has 288 macro cells with 6,400 usable gates and system frequency up to 208 MHz.

ARINC429 Interface

	Type II PC Card
	16 bit PCMCIA Architecture
	DDC Controller
	2Tx / 4Rx ARINC429 Channel
	128 x 32 bit Static RAM interface
	Programmable Interrupts
	Configurable Bit Format Control
	Built-in Fault Detection Circuitry

Transmit Interface

	Programmable 12.5/100KHz bit rate
	Two 32 (words deep) x 32 (bit) Transmit FIFO’s
	Independent data transmit by each channel
	Programmable data transmit rate for each channel
	Transmit FIFO Status Indicators

Receive Interface

	Four 32 (words deep) x 32 (bit) Receive FIFO’s
	Receive data rates can be programmed for channel 0 and 1 independent of channel 2 and 3 in each ARINC429 controller
	Reducing Receive Data Latency
	Filtering & Sorting of data
	Storage of data
	Parity Error Checking & Reporting
	Receive FIFO status indicator

Diagnostics

	Testing of Memory Elements
	Testing Transmit/Receive functions
	Wraparound Test for each channel
	Interrupt Function Testing

Error Conditions

	Sequence Error
	Address Error
	FIFO Overflow Error
	Receive Data Parity Error
	ARINC Clock Error

Software Support

	Driver and high-level API libraries for Windows XP
	A powerful 'Virtual Instrument Panel' developed to mimic the physical card features & capabilities for interactive control & monitoring
	Sample applications provided

Physical

	Type II PC Card
	Card dimensions- 54.0 x 85.6 x 5 mm

Environmental

	Operating temperature: 0º C to +50º C
	Storage temperature: -20º C to +70º C

Power

+ 5 VDC

Warranty

1 year limited warranty