Lexicon PCM92 - PCM92 Specifications; Audio and Digital Interfaces; Propagation Delays and Synchronization

53
PcM92 SPecIFIcAtIoNS
ANALoG INPUtS
Connectors Two, Female XLR
Impedance 20K Ohm, balanced
Level (for 0 dbFS) +4dBu mode: +20dBu
–10dBV mode: 8.2dBu
Freq Response @96K 20Hz to 40KHz, +0/–3dB
A/D Conversion 24 bits
A/D Dyn Range >112 dB unweighted, 115dB A-weighted
THD <.002% 20 → 20kHz @ +4dBu
Crosstalk @ 1Khz <–90 dB, 20 → 20k at +20dBu input
ANALoG oUtPUt
Connectors Two, Male XLR
Impedance 30 Ohm, electronically balanced
Level (at 0 dBFS) +20dBu
Freq Response @96K 20 Hz - 20 kHz, +/- 0.25 dB
20Hz - 40kHz +0/–3dB
D/A Conversion 24 bits
D/A Dyn Range 112 dB unweighted, 115 dB A-weighted
THD <.002% 20Hz - 20kHz at +4dBu
Crosstalk @ 1kHz <–90 dB at 20Hz - 20kHz with +20dBu
input
dIGItAL AUdIo Io
Connectors One Male XLR Output
One Female XLR Input
Two FireWire
TM
Ports
Format AES/EBU/FireWire (400Mb)
Word Size 24 bits
SAMPLe RAteS
Internal 44.1kHz/48kHz/88.2kHz/96kHz
Accuracy within ±50ppm
External 44.1kHz/48kHz/88.2kHz/96kHz
Lock Range ±2% of nominal
PRoPAGAtIoN deLAyS (MILLISecoNdS)
44.1 kHz 48 kHz 88.2 kHz 96 kHz
A/D 1.41 1.28 1.25 1.13
A/A 1.64 1.51 1.28 1.18
D/A 1.48 1.36 1.24 1.14
D/D 1.23 1.12 1.15 1.07
SyNchRoNIzAtIoN
TTL Word Clock Input * 75 Ohm, BNC
*Falling edge marks start of frame