User manual DRAKE DIGITAL HCP2550A

[. . . ] ® HCP2550A Commercial Heterodyne Channel Processor (For use in NTSC systems) Instruction Manual ® is a registered trademark of the R. L. P/N: 3852423F-3-2002 Printed in the U. S. A. ii Caution Statements WARNING: TO PREVENT FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE TO RAIN OR MOISTURE A product and cart combination should be moved with care. Quick stops, excessive force and uneven surfaces may cause the product 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. [. . . ] The aural carrier should be adjusted to approximately 15 dB below the visual carrier (normal operation). Clockwise rotation increases the output aural carrier level and thus decreases the output A/V ratio. F10 ­ OUTPUT LEVEL Control This screwdriver adjustment varies the RF OUTPUT level. Clockwise rotation increases the level. F11 ­ OUTPUT ENABLED Indicator Lights to indicate that a valid channel is selected. The RF output is switched off for any invalid output channel settings. F12 ­ 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 along with any required FCC offset for shared aviation/navigation frequencies. See Table 2 ­ "OUTPUT CHANNEL" included in this manual for the list of corresponding operating frequency, and offset, if any, for each channel number. It is important to note, however, that the output frequency is accurate only if the input signal is on a proper frequency (includes any offset, plus or minus, if required) or the AFC function is active and locked. It is recommended that the AFC (see Item F3) be switched on for all combinations of input and output channels, except when the output channel is set for the same channel as the input. 4 R1 R2 Rear Panel Controls and Connections R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 MADE IN THE U. S. A. BY RF OUTPUT ® FCC OFFSET EAS IF IN IN COMPOSITE IF OUT EAS SIGNAL STRENGTH CAUTION: - RISK EAS AUTO PILOT OFF ON OF FIRE - REPLACE FUSE AS MARKED AFTER DISCONNECTING UNIT FROM AC LINE. RF INPUT FUSE 1 / 2 AMP, 250 V SLO -- BLO 115 VAC, 60 Hz 30 WATTS -- 0 + ATTENTION: IF LOOP MANUAL - 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 - FCC OFFSET Switch The HCP2550A synthesizer has been programmed to comply with FCC requirements for offsets on cable channel frequencies assigned to aviation and navigation communications with the `FCC OFFSET' switch set to the "+" position. With the switch in the "+" position, the HCP2550A will automatically offset the visual carrier either +12. 5 kHz or +25 kHz above the channel frequency on required channels as listed in Table 2 ­ OUTPUT CHANNEL included in this manual. Be certain of the permissible operating frequency if this switch is to be set to the "0" position since NO offset will be applied to any channel. Similarly, setting the switch to the "-" position forces the offset to a programmed -12. 5 kHz or -25 kHz as required. The normal setting for this switch is in the "+" position. R3 ­ EAS IF IN Connector This is an alternate composite IF intended for the Emergency Alert System (EAS) signals as defined by Part 11 of the FCC requirements. This input is manually activated by setting the `EAS' switch (R9) to the `Manual' position and grounding the EAS screw terminal (R6), or is automatically activated by setting the `EAS' switch to the `AUTO' position. When the unit is strapped for automatic switching to the EAS input, switching will occur for levels of the 45. 75 MHz RF signal exceeding +20 dBmV at the `EAS IF IN' connector. The nominal operating EAS composite IF input level is +28 dBmV. [. . . ] Should your warranty card not be on file at R. L. DRAKE, 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 11 R. L. [. . . ]