ATI Audio DM200 - Manual (Page 4)

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METERING
The DM200 allows front panel selection of two metering modes. The D/A mode measures the direct
output of the D/A Converter and is calibrated (internal adjustments M2L, M2R) to just indicate
0dBFS maximum at full digital input count. 0dBFS on the D/A meter corresponds to +22dBu line
output level. The D/A scale measures 9 additional 3dB steps down from 0dBFS to -27dB.
The LINE mode meters the audio line output and are calibrated to read 0dB at +4dBu line output
level with internal calibration adjustments M1L and M1R. The LINE meter scale measures 12dB
above and 15dB below the 0dB point.
The ballistics of the meter displays are designed to closely follow the requirements of DIN45406 for
PPM response in order to best indicate audible peaks.
DISPLAY
The DM200 reads out the input signal sample rate Fs (if within the +1-4% of the standard
frequency) on a set of five front panel yellow LED indicators (32, 44.1, 48, 88.2 and 96kHz). A
green data VALID readout indicates that the received data was correct when sent and that there
have been no subsequent parity or bi-phase coding violations or an out-of-lock PLL clock receiver.
Out-of-range or no-signal conditions blank all indicators.
POWER
The DM200 operates from an external 24VDC power module and draws up to .2A. Loop-thru DC
connectors allow multiple NanoAmps to operate from a single power module. Allow one power
module for every two DM200 NanoAmps. Use power modules WA100-1, -2 or -2E and loop-thru
cables 20602-1.
A front panel POWER switch and Red LED indicator are provided.
SIZE in (cm) 1.72(4.45) HX5.75 (14.6) WX6.0 (15.2) D; 1.5lbs.7Kg net weight
NanoAmps can be mounted up to three across in one vertical 1 W' rack space using accessory rack
mount kits. Stacking and angled desk mount kits and field carry bags are also available.