Summary of Contents for RF Power Horizon DSP Encoder
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Page 1: Stereo Generator
Stereo Generator User Manual Digital Signal Processor Stereo Generator USER MANUAL Page 1 May 2008... - Page 2 Stereo Generator User Manual Quick Set up Instructions (If not already fitted) Install the stereo generator at the rear of the transmitter chassis in place of the “Mono” interface board. Connect 12 VDC from the auxiliary power supply. Arrange to monitor the transmitter audio with a modulation meter or spectrum analyser, Set the jumpers* for analog or digital input.
- Page 3 Stereo Generator User Manual Recommended Jumper Settings for Initial Use The following jumper settings are recommended for normal operation: Jumper Position Function Comment JP1,JP2 Select AES/EBU input Jumpers can be left in or out when analog selected. Select 3ID Input Jumper can be left in or out when analog selected.
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Page 4: Specifications
Stereo Generator User Manual Specifications: Model: Horizon DSP Encoder (R2) Baseband Audio 20Hz ~15 KHz Stereo separation > 50dB Pre-emphasis 50 or 75 uS Noise & Distortion Better than 0.01% Analog Input level 0dBm Analog Input Female XLR, (10K) Digital Input AES/EBU XLR &... - Page 5 Stereo Generator User Manual Overview All Horizon rack mounting transmitters can be fitted with an internal stereo generator. Generation of the composite stereo baseband signal is accomplished by a digital signal processor (DSP). The DSP ensures accurate generation of the main, subcarrier and pilot tone. All critical bandpass filtering is performed by the DSP as well as pre-emphasis.
- Page 6 Stereo Generator User Manual LCD Deviation Display The top line of the Horizon Transmitter LCD display is a digital “VU” meter. It shows the average programme level radiated by the transmitter. The meter is only a guide to setting the average deviation and should only be used when no other equipment is available.
- Page 7 Stereo Generator User Manual Notes on DSP Operation Audio Processing The audio data initially passes through a 1st order IIR pre-emphasis filter. The filter can have one of 3 time constants set by two jumpers- Bypass, 50uS, or 75uS. The characteristic of the filter is within -0.5dB of the specified curve.
- Page 8 Stereo Generator User Manual WARRANTY RF POWER (Manufacturer) warrants that this product is free of defects in both materials and workmanship. Should any part of this equipment be defective, the Manufacturer agrees, at its option, to: A. Repair or replace any defective part free of charge (except transportation charges) for a period of one year from the date of the original purchase, provided the owner returns the equipment to the Manufacturer.
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