Introduction
This manual covers the operation and technical aspects of the Single-Standard
Converter with RF Modulator. The Converter is designed to accept an NTSC or
PAL/SECAM video signal and convert to one of several different output standards
depending on the model. The converted video is sent to the built-in RF Modulator,
along with the audio, and to a composite video output connector.
Features
• Compact, low power, surface mount design
• Front panel Status LED
• Internal user switch selectable options control
• Flexible built-in RF Modulator:
- Up to 30 selectable carrier frequencies
- Programmable between 30-880MHz (actual channels vary by model)
- Supports positive/negative video and AM/FM audio modulation schemes
• Converter bypass mode for use as stand alone RF Modulator
• Extremely stable output: +/- 3% levels, +/- 50ppm timing
• Output clock line locked to input clock for perfect conversions
• 10 bit video D/A for greater than 54dB dynamic range
• 4Mb FLASH Image Memory for storing a custom image
• 100K gate equivalent FieldProgrammableGateArray (250K on SCRF405A-NTSC)
• EEPROM memory for FPGA firmware, field upgradeable
• Extremely accurate algorithms used for conversions:
- Three line interpolation on all standards
- All internal calculations done to a minimum 12 bit precision
• Unique partial-field memory for stable output syncs
• Externally adjustable RF channel and audio modulation depth control
• Automatic Sleep Mode for low power standby operation
• Versatile I/O:
- Composite Video Input (NTSC/PAL, 1Vpp, 75 ohm)
- Composite Video Output (various standards depending on model, 1Vpp, 75 ohm)
- Stereo Audio Inputs (-10dBV nominal, 0.2Vpp-5Vpp, 20k ohm)
- RF Output (76dB
μ
V, 75 ohm, approx. 6mV)
- DC power (7-14Vdc, 250ma)
Introduction
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