Technical Specifications - Pacific Microsonics HDCD Model Two User Manual

Reference
71
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Model Two HDCD User's Manual

Technical Specifications

Analog Inputs 1 and 2
Connectors: XLR-3-31; Polarity: pin 2 or 3 high (software selected); Sensitivity: +12 dBu
to +24 dBu full scale; Impedance: 13 k balanced; CMRR: > 80 dB DC to 1 kHz, > 60 dB
at 20 kHz.
Analog Outputs 1 and 2
Connectors: XLR-3-32; Polarity: pin 2 or 3 high (software selected); Level: +18 or +24 dBu
full scale, set with analog attenuator. All other levels are set by digital attenuation in
0.188 dB steps at 44.1 kHz and 48 kHz. At 88.2 kHz and above, digital attenuation is in
0.1 dB steps.; Impedance: 20 balanced.
Digital Inputs 1 and 2
Signal Format: AES3 16-bit to 24-bit, single wire at 44.1 kHz and 48 kHz, single wire or
two wire at 88.2 kHz and 96 kHz, two wire at 176.4 kHz and 192 kHz; Connectors: XLR-3-
31; Level RS-422; Impedance: 110 balanced.
Digital Outputs 1 and 2
Signal Format: AES3 16-bit, 20-bit, 24-bit, single wire at 44.1 kHz and 48 kHz, single wire
or two wire at 88.2 kHz and 96 kHz, two wire at 176.4 kHz and 192 kHz; Connectors: XLR-
3-32; Level: RS-422; Impedance: 110 balanced. (Output 1 and 2 word lengths may be
independently set at 44.1 kHz and 48 kHz)
Digital Reference Input
Signal Format: AES3 16-bit to 24-bit, 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz; Connector:
XLR-3-31; Level: RS-422; Impedance: 110 balanced.
Word Clock Input/Output
Signal Format: 44.1 kHz, 48 kHz, 88.2 kHz and 96 kHz square wave; Connector: BNC; Input
Level: TTL; Impedance: 75 . Model Twos have isolated high impedance bridging word
clock inputs and require an external 75 termination. This allows multiple units to be
"daisy chained" for synchronous operation with the last unit in the chain terminated by
75 . The 75 word clock output is AC coupled to prevent ground loops and can be
connected to most equipment with CMOS "TTL compatible" 75 word clock inputs.
Serial Data I/O
Signal Format: RS-232; Connector: D-Sub 9-pin, DTE. (Used for downloading system soft-
ware from an external source)
P A C I F I C M I C R O S O N I C S I N C .
Rev. C - January 2002
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