User manual DRAKE DIGITAL 550TCP

[. . . ] TM 550TCP Commercial Terrestrial Channel Processor (For use in NTSC systems) Instruction Manual TM is a trademark of the R. L. P/N: 3852459E-09-2004 Printed in the U. S. A. ii Caution Statements WARNING: TO PREVENT FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE TO RAIN OR MOISTURE ¡WARNING! RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE POWER SUPPLY COVERS NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL An appliance and cart combination should be moved with care. Quick stops, excessive force and uneven surfaces may cause the appliance and cart combination to overturn. The lightning flash with arrow head symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. [. . . ] See page 5 for details. SPECIFICATIONS INPUT SECTION Frequency Range: Input Impedance: RF Input Level : Noise Figure: Tuner Image Rejection: OUTPUT SECTION Frequency Range: Output Level: Video Frequency Response: L-C Delay: Frequency Stability: 54 - 806 MHz: Off-Air TV channels, CH 2-69. VHF: 65 dB; UHF: 50 dB. 82 channels, 54 to 550 MHz; Channels 2 to 78 and 95 to 99. ±5 PPM of frequency difference between input and output signals. A/V Ratio Adjustment: Typically -2 to -12 dB relative to input A/V ratio. Spurious Outputs: -58 dBc minimum, -60 dBc typical, (measured at an input level between 0 to +20 dBmV). Broadband Noise: -75 dBc typical, (4 MHz noise bandwidth @ ±12 MHz). GENERAL AC Power Input: Operating Temperature: Size: Weight: 115 VAC (±10%), 60 Hz, 30 Watts. (3. 2 Kg). 2 Front Panel Controls/Rear Panel Connections F1 F2 F3 F4 F5 F6 F7 Front Panel Controls and Indicators 550TCP TERRESTRIAL CHANNEL PROCESSOR A / V RATIO OUTPUT LEVEL 4 POWER 4 SIGNAL 7 8 OUTPUT ENABLED INPUT CHANNEL OUTPUT CHANNEL Figure 1 F1 POWER Indicator - Lights when the unit is connected to a source of AC power. F2 INPUT CHANNEL Number Switch - Sets the input channel number for off air TV channels 02 through 69. F3 SIGNAL Indicator - Lights to indicate that an input signal is being received as set by the input channel switches and is of a signal strength greater than approximately -10 dBm. Note that if this indicator is off (no received signal), the RF output is switched off. R3 COMPOSITE IF OUT Connector - This is the composite IF output from the IF circuits. The composite IF provides a vestigial sideband filtered visual carrier at 45. 75 MHz (plus or minus any input signal offset) combined with a level controlled aural carrier at 41. 25 MHz (plus or minus any input signal offset). This connection is normally cabled directly to the "COMPOSITE IF IN" connector (see Item R2). R4 RF INPUT Connector - This is the input to the channel processor circuits for all signals with video carrier frequencies in the range of 54 through 806 MHz. R5 FUSE Holder - Always replace this fuse with one of the same type and rating: 1/2 Amp, 250 V, SLO-BLO, 5 x 20 mm type. When the cable is connected to a properly wired AC power line outlet, this cable grounds the instrument cabinet. Do not defeat the safety purpose of the attached line cord plug. Installation CONNECTIONS AND CONTROLS ­ All connections to and from the 550TCP are made through the rear panel. Figure 3 shows a typical two channel processing installation involving the converting of off-air signals. Additional channels can be processed by using additional channel processor units and either multi-port combiners or combinations of two-port combiners. INSTALLATION NOTES ­ Level adjustment provides optimum performance in multichannel installations. The channel processor outputs should be checked periodically with a spectrum analyzer to maintain a ±1 dB variation of adjacent channel carriers. The `Output Level' and `A/V Ratio' controls are used respectively to make these adjustments. [. . . ] The unit must be sent to the following address: Service Department R. L. Be sure to include your street address which will be needed for UPS return. UPS Surface (Brown Label) takes 7-10 days to reach us depending on your location, Blue takes 2-3 days. Red is an overnight service. Send the unit in a way that it can be traced if we can't verify receipt of shipment. [. . . ]