QSC Audio CM16a manual Introduction- Physical Characteristics & Layout

Section 1: Introduction- Physical Characteristics & Layout

PHYSICAL CHARACTERISTICS

Each CM16a is one rack space in height (1RU) and has an internal AC power supply. Its chassis depth is 37.7 cm (14.84 in.). The width of the chassis is 44.0 cm (17.32 in.). For the detailed mounting dimensions, please see specification section. The weight of the CM16a is approximately 5 kilograms (11 pounds).

FRONT PANEL (numbers correspond to reference locations shown in illustration to right)

The front panel of the CM16a includes:

1- AC OFF / POWER switch

2- Cooling air exhaust vents (intake vents on left side of chassis as viewed from the front)

3- AC POWER indicator LED

4- DIAGNOSTIC indicator LED

5- Network status indicator LED’s ( RCV, XMT and LINK STATUS), duplicated on rear panel for convenience 6- PORT A through PORT H connection indicator LED’s

7- Access hole for the BYPASS switch (this is not labeled on the panel)

REAR PANEL (numbers correspond to reference locations shown in illustration to right)

The rear panel of the CM16a has duplicates of the RCV, XMT and LINK STATUS indicator LED’s so that network status can be detected from the rear of the unit when installed in the equipment rack. The rear panel provides the following connections:

8- Eight HD-15 receptacles (PORT A through PORT H) for connection to amplifiers with VGA-type cables

9- Sixteen “Phoenix”-type (Euro-style) 3-pin receptacles for audio inputs (PORT A CH 1 through PORT H CH 16)

10- One “Phoenix”-type 5-pin receptacle for audio monitoring functions (MONITOR CHAIN, IN and OUT)

11- One “Phoenix”-type 3-pin receptacle for paging audio signal input (PAGE)

12- One “Phoenix”-type 2-pin receptacle for remote sensing (example: detecting a switch closure or logic event; RLY / TRG IN)

13- One “Phoenix”-type 3-pin receptacle for access to SPDT relay contacts (used for remote switching of external devices; RLY OUT)

14- One RJ-45 type receptacle (10BASE-TEthernet computer network connection)

15- One DB-9 type receptacle (RS-232Port for network and firmware utilities)

16- IEC-type detachable AC power cord receptacle (for connection to AC power line) with integral fuse holder

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