GatesAir Intraplex PTR-255 - Page 49

GatesAir PTR-255 Program Audio Codec Module
Intraplex Products Issue 2.1, February 2006
45
Digital Audio:
Accepted Audio Sampling Rates
32, 44.1 or 48 ksps
Rate conversion from 44.1 to 32 or 48 ksps
Accepts AES external sync input
AES/EBU Channel Status
Only the audio bits are transmitted. The AES/EBU frame
pattern is regenerated at the far end.
Impedance
Balanced, 110 ohms ±20%
ISO/MPEG I & II Layer 2 & 3
Operating Modes
Monaural, dual monaural, stereo, joint stereo
Sample Frequencies
32, 48 ksps (MPEG Layer 2)
16, 24, 32, 48 ksps (MPEG Layer 3)
Data Rates
Layer 2: 64, 128, 192, 256, 320 or 384 kbps
Layer 3: 64, 128, 192, 256 or 320 kbps
Processing Delay
(one pair of modules)
Sample
Frequency
Layer 2 *
Layer 3
16 ksps
N/S
< 420 ms
24 ksps
N/S
< 280 ms
32 ksps
< 225 ms
< 330 ms
48 ksps
< 110 ms
< 260 ms
*Delay at Layer 2 at 384 kbps, 48 ksps = 180 ms
Inverse Multiplexing
CCS inverse multiplexing (Layer 2)
FHG inverse multiplexing (Layer 3)
Standards Compliance
ISO/MPEG I & II, Layer 2, Layer 3. Compliant with
ISO/IEC 11172-3:1993 (E) and ISO/IEC 13818-3.
G.722:
Operating Modes
Monaural, Dual Monaural