Project Name M-DCPS MASTER Nov. 2014
Project No. SPECIFICATION GUIDELINES 13745 − 11
f) The clock case shall be metal or ABS, with a black or silver finish.
Clock shall be supplied with a sway-proof hinge for secure mounting.
2) [Digital Clocks:]
a) Provide a 4-digits (hours and minutes) 12-hour display, with red color
4" inch high LED digits.
I. Equipment Racks:
1. Mount control components of the communications system, the program distribution
system, the tone generation system, and the master program clock system in free
standing upright metal equipment rack(s) designed to mount standard 19 inch
components.
2. Properly size the racks to accommodate necessary equipment panels with 20 percent
spare blank panel space.
3. At least 61.25 inches of total vertical panel space shall be provided.
4. Controls shall be handicapped accessible according to Americans with Disabilities Act
(ADA).
5. Construct the rack of at least 16 gage steel, heavily reinforced for maximum strength
and durability equipped with casters.
6. Provide a hinged and key-locking rear door providing authorized personnel with easy
access to the equipment.
7. The rack shall be finished in ebony black baked enamel, and shall be listed by
Underwriters Laboratories (UL) or other NRTL.
8. Included in the rack shall be a roll-out storage drawer 8.75 inches high by 14.25
inches deep, with a face panel styled to match the other equipment panels in the
rack. The roll-out mechanism shall be of the dual-section type providing at least 12.25
inches total extension.
9. Include in the rack a shelf 12 inches deep across the front of the rack.
2.3 EQUIPMENT
A. Intercommunications System: As supplied by the intercom equipment contractor.
B. Master Control Clock System: As supplied by the intercom equipment contractor.
C. Tone Generator System: As supplied by the intercom equipment contractor.
D. Rack and Associated Hardware:
1. Microphone input jack, exterior speaker ON/OFF switch, and tone signaling
pushbuttons (1 required).
2. Fill unused panel spaces with blank panels.
3. Label inputs, switches, and controls with permanent markings. Indicate rooms and
areas served.
E. Speakers:
1. Remote speakers shall be 8 ohms, with a 25-volt transformer with a minimum of five
(5) taps ranging from 0.5 watt to 5 watts.
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