User manual DRAKE DIGITAL DRMM12 DATASHEET

[. . . ] DRMM12 Rack Mount The DRMM12 Rack Mount supports a single Drake Power Supply and up to (8) modular Drake digital headend units to configure a professional quality, modular, headend system, which optimizes rack space. The DRMM12 mounts in a standard 19" wide equipment rack and requires 3 1/2" of vertical rack space. [. . . ] Excessive heat will shorten the life of components and individual module(s). Power supply performance will also be degraded without proper cooling. GRAY END CAP (DECORATIVE) P/N: 4801560) 1 If desired, the supplied gray end caps can be installed over the mounting ears of the DRMM12 and secured by the rack support screws. Locate the Power Supply (sold separately). Prior to sliding the power supply into the right-hand side top and bottom slide rails of the DRMM12, loosen the #6-32 screw located on the top surface of the power supply. Position the free end of the ground wire lug (other end of wire fastened to DRMM12) under the #6-32 screw, and tighten the screw to secure the ground wire. If necessary, use the following steps to remove the Drake Power Supply from the rack: 1) Remove the module immediately adjacent to the Drake Power Supply. Be aware that the module power cable will become disconnected from the rear when the module is removed. 2) Now grasp the edge of the Drake Power Supply front panel and remove the unit from rack. 3) Reconnect the module power cable then replace the adjacent module as required. DRMM12 SECURE LUG (GROUND BONDING WIRE) UNDER #6-32 SCREW HEAD. SLIDE RAIL (INTERNAL TO RACK CHASSIS, TOP AND BOTTOM). GRAY END CAP (DECORATIVE) P/N: 4801560) DUC860 DUC550 DUC860 DUC550 TMQAM POWER ERROR TMQAM POWER ERROR TMQAM POWER ERROR TMQAM POWER ERROR QAM MODULATOR QAM MODULATOR QAM MODULATOR QAM MODULATOR 2 5 CATV+100 CATV GAIN BIT RATE 19. 327 M ENTER 7 5 BIT RATE 19. 327 M ENTER 2 5 CATV+100 CATV GAIN BIT RATE 19. 327 M ENTER 7 5 BIT RATE 19. 327 M ENTER GAIN GAIN POWER SUPPLY FIGURE 1 - Front View of Rack Mount System with Power Supply PS8 2 DRMM12 Rack Mount, continued Avoid stretching the cables or routing them where damage to the cable is likely. After the desired modules are installed into the DRMM12 and the DRMM12 is secured in the rack, connect the AC power cord of the power supply to a source of AC power. First, install the Drake PS8 Power Supply into the DRMM12. Next, slide individual modules (maximum of 8 units) into the desired rack locations. [. . . ] Drake Company © Copyright 2001 R. L. P/N: 3852375B-9-2001 Printed in the U. S. A. [. . . ]