User manual DRAKE DIGITAL HCP1550

[. . . ] HCP1550 Commercial Heterodyne Channel Processor (For use in NTSC systems) Instruction Manual ® is a registered trademark of the R. L. P/N: 3852453K-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. [. . . ] Broadband Noise: -75 dBc typical, (4 MHz noise bandwidth @ ±12 MHz). STANDARD CATV CHANNEL 25: RF INPUT CATV + 100 CATV OFF AIR IRC HRC STD 2 5 CHANNEL PLAN INPUT CHANNEL - Setting the left-hand switch for "CATV +100" sets a leading "1" to the INPUT CHANNEL thumbwheel switch for CATV channels from 100 through 125. STANDARD CATV CHANNEL 125: RF INPUT CATV + 100 CATV OFF AIR IRC HRC STD 2 5 CHANNEL PLAN INPUT CHANNEL Front Panel Controls and Indicators, continued F6 ­ OFFSET Switches The OUTPUT CHANNEL switches set the output frequency for a visual carrier frequency of `xx. 25' or `xxx. 25' MHz only. The exact output signal frequency, however, is relative to the input signal frequency and any additional offset (plus or minus) set by the OFFSET switches. For example, an input signal of 229. 2625 MHz (+12. 5 kHz offset) and an OFFSET switch setting of `0' would result in an output frequency of `xx. 2625' or `xxx. 2625 MHz. Input Channel Off Air channel 25 (537. 25 MHz) Output Channel Standard CATV channel 44 (343. 2625 MHz, includes +12. 5 kHz aviation offset). 3 In a similar fashion, output OFFSET switch settings plus or minus in various 6. 25 kHz increments will modify the exact output frequency accordingly. Multiply the thumbwheel switch number times 6. 25 kHz to determine the offset. For example, a setting of `"2" sets a 2 x 6. 25 kHz = 12. 5 kHz offset. Remember to also set the direction of any offset plus or minus as required. Certain CATV channels require aviation or navigation offsets. Several examples follow: Offset Switch Settings +2 x 6. 25 kHz = +12. 5 kHz (Output frequency = 343. 2625 MHz) RF OUTPUT -- + 2 x 6. 25 kHz OFFSET 4 4 OUTPUT CHANNEL Standard CATV channel 25 (229. 2625 MHz, includes +12. 5 kHz aviation offset). Standard CATV channel 44 (343. 2625 MHz, includes +12. 5 kHz aviation offset). 0 x 6. 25 kHz = 0 kHz (Output frequency = 343. 2625 MHz) RF OUTPUT -- + 0 x 6. 25 kHz OFFSET 4 4 OUTPUT CHANNEL Standard CATV channel 25 (229. 2625 MHz, includes +12. 5 kHz aviation offset). Standard CATV channel 78 (547. 25 MHz, no offset required). -2 x 6. 25 kHz = -12. 5 kHz (Output frequency = 547. 25 MHz) RF OUTPUT -- + 2 x 6. 25 kHz OFFSET 7 8 OUTPUT CHANNEL F7 ­ OUTPUT CHANNEL Number Switch Sets the output channel number for standard CATV channels 02 through 78 and 95 through 99. Note that these switches set the output frequency for a visual carrier frequency of `xx. 25' or `xxx. 25' MHz only. Any required offset must be set by the `OFFSET' switches with knowledge of the input signal frequency and required output frequency. See Table 2 in the `Installation' section of this manual for a list of output channels and any required aviation offsets. F8 ­ OUTPUT ENABLED Indicator Lights to indicate that a valid channel is selected and an input signal is being received. The RF output is switched off for any invalid output channel settings, no received input signal as set by the input channel switches (`SIGNAL' indicator is off), or other conditions that would cause the unit to operate on an invalid frequency. F9 ­ RF OUTPUT LEVEL Control This screwdriver adjustment varies the RF OUTPUT level. Clockwise rotation increases the level. 4 Rear Panel Connections R1 R2 R3 R4 R5 R6 MADE IN THE U. S. A. BY ® CAUTION: - RISK RF OUTPUT COMPOSITE IF IN IF LOOP OUT RF INPUT OF FIRE - REPLACE FUSE AS MARKED AFTER DISCONNECTING UNIT FROM AC LINE. FUSE 1 / 2 A, 250 V SLO - BLO 115 VAC, 60Hz 30 WATTS ATTENTION: - RISQUE D'INCENDIE REMPLACEZ FUSIBLE DU TYPE INDIQUE APRES DEBRANCHER DU SECTEUR. SERIAL # Figure 2 R1 ­ RF OUTPUT Connector This is the converted channel output. R2 ­ COMPOSITE IF IN Connector This is the composite IF input to the output channel circuits. The composite IF has both the aural and visual IF combined. This connection is normally cabled directly to the "COMPOSITE IF OUT" connector (see Item R3). [. . . ] DRAKE will make note of any shipping damage upon receipt. You will need to send proof of purchase to receive warranty service. Typically, a copy of the invoice from an R. L. The warranty is for the original owner only and is not transferable. Warranty Three Year Limited Warranty 9 R. L. [. . . ]