ATI Audio MCDA112 - Manual (Page 7)

7
MCDA‐112 Manual
Expensive components start to die at internal temperatures above 70°C (158°F). We recommend that
you maintain rack temperatures below 50°C (122°F) to prevent excessive internal temperature buildup.
POWER
If it is necessary to convert a unit wired for 115VAC to 230VAC operation, unplug the unit from the power
source, remove the cover mounting screws and locate the jumpers next to the power transformer. Clip the
jumpers 1-2 and 3-4 (don’t unsolder), jumper from 2-3 carefully soldering together the free ends of 2-3
previously clipped. This procedure is recommended to avoid soldering damage to the multi-layer PC board.
WIRING
XLR inputs for external clock sources require special controlled impedance, 110 ohm, low loss, foil shielded,
twisted pair cables. Standard audio cable is not recommended except for runs of only a few feet. Belden
and most other cable manufacturers offer special digital audio cabling for this application. BNC connectors
use 75-ohm coax (RG59). Select a cable for losses less than 20dB at 12MHz (for data rates up to 96kHz) at
the maximum distance you require. Keep cable length as short as possible, especially when working with
Super Word clock rates.
MCDA-112 SPECIFICATIONS
INPUTS
CONNECTORS
XLR female for AES3, BNC for Word Clock and Super-Word Clock
LEVEL XLR 0.2Vp-p minimum; BNC 0.1Vp-p minimum
IMPEDANCE Transformer isolated, balanced and floating, XLR 110 ohms, BNC
75 ohms; input terminations may be switched in or out via front
panel control
CLOCK Filtered and reconstructed from external input signal with dual
mode PLL
SYNC FREQUENCY 22 to 216kHz
OUTPUTS
SYNC OUT CONNECTORS
12 x BNC
LEVEL 5 V TTL unloaded
IMPEDANCE 75 ohms, unbalanced
LOOP-THRU XLR-M and BNC
INDICATORS
EXTERNAL CLOCK FORMAT
AES, Word Clock or Super-Word Clock
SAMPLE RATE 32, 44.1, 48. 88.2, 96, 176.4 or 192 kHz
OUTPUT CLOCK FORMAT Word Clock or Super-Word Clock
INPUT TERMINATION Terminated or Off
CLOCK SOURCE Internal or External
POWER Internal Supply, 115/230VAC ±10%, 50/60Hz, 10VA, IEC320 3 pin
connector
SIZE 1 RU Package, 19” (48.3cm) W x 1.75“ (4.5cm) H x 8.5” (21.6cm) D
WEIGHT 7 pounds (3.2 kg) net; 9 pounds (4.1 kg) shipping weight
WARRANTY Limited, One Year Warranty