Handbook

Redbox User Handbook No 1
25
DIGITAL AUDIO CONVERTERS - RB-SC2
4
DIGITAL AUDIO CONVERTERS
RB-SC2 Dual Sample Rate Converter, 24bit 192kHz
Introduction
Fig 1: RB-SC2 Front Panel
The RB-SC2 sample rate converter is a 1U rack-mount which produces
AES/EBU, S/PDIF and TOSlink optical level digital audio outputs from a
balanced AES/EBU, S/PDIF and TOSlink optical level digital audio inputs.
The sample rate of the outputs can be set by an internal clock or from
various external synchronizer sources.
The RB-SC2 is a high performance, enhanced version of the RB-SC1 providing the following
additional features:
• Itsupportshighersamplefrequencyratesuptoandincluding176.4kHzand192kHz.
• Ithas2independentsamplerateconvertercircuitsthatuseacommonclocksourceto
set the output sample rate.
• Ithas2optionalvideosynchronisingboards.Thesesettheoutputsamplerateto
48kHz that is synchronised to either an analogue video signal or SDI digital video
signal (HD or SD).
• AspecialX-Lockmodeallowstheunittofunctionasafullbi-directionalsample
rate converter.
• IthasTOSlinkopticaldigitalaudioinputsandoutputs.
• Ithasfrontpanelpush-buttonswitchesforallthemainsettings.Thebuttonsare
arranged in sets, where pressing the button advances the current selection and
LED indicator.
• AserialRS232portisincludedsothattheRB-SC2settingscanbecontrolledremotely.
The front panel LED indicators alter automatically when using RS232 commands.
For the digital outputs, there are three push-button switches to select the sample
frequency (FREQUENCY), channel status bit type (CSDATA), and sync source and mode of
operation (SYNC).
2
9
1
Frequency Button
and LEDs
Input 1 Button
and LEDs
Sync Button
and LEDs
CS Data Button
and LEDs
Reset
Button
Input 2 Button
and LEDs