Specifications

Prism Media Products Limited AD-2 Dual-rate A/D converter
Operation Manual
Issue 0.2 © Prism Media Products Limited
11 August 1998 Page 49 of 58
7.5.11. User bit on AES3 and IEC958 format digital outputs
In A-D mode the output user data bit is zero.
In D-D mode the user data from the input is passed through to the output. This allows
D-D processes, such as SNS noise shaping, to be performed with CD or DAT
subcodes intact. If the selected input is SDIF-2 format then the user data bit is zero.
7.5.12. Channel status bit on AES3 and IEC958 format digital outputs
In A-D mode the channel status is internally generated with appropriate fields correctly
set according to the operating conditions. The consumer format outputs carry the
category code for ADC with copyright information and copy permit.
In D-D mode, principal input channel status fields, such as emphasis, are passed
through to the output; other fields are internally generated. The overall status
information is processed into professional or consumer format for each output type.
NOTE: for AES3 and AES-3id outputs in Split96 mode, the channel status fields which
describe the channel mode are set to indicate Split96, as newly proposed in ref. 2, 8.
7.5.13. Jitter characteristics common to all digital outputs
Jitter peaking: less than 1dB
Jitter attenuation slope: 80dB per decade
Corner frequency: approx 80Hz
Attenuation above 500Hz: > 60dB
7.6. Synchronization
Lock range: ±0.15% of a standard sampling rate:
Nominal Minimum Range
32 kHz 31.96 to 32.04 kHz
44.1 kHz 44.03 to 44.17 kHz
48 kHz 47.93 to 48.07 kHz
88.2 kHz 88.07 to 88.33 kHz
96 kHz 95.86 to 48.14 kHz
Lock-up time: 2 s
Digital input to digital output timing difference: < 5% of a sample period
Note: This is referred to the first transition of an AES3 or IEC958 frame or the rising edge of word clock.