Operating instructions

PRELIMINARY GUIDE TO INSTALLATION AND OPERATION
UVP-101i | 15
phased with the reference or the input within less than +/- 18.5 ns. NOTE: fine phasing is only available when
a reference input is detected.
4.5 Audio Processing Functions [MENU: ABUS
→
#1 and ABUS
→
#2]
The UVP-101i does not possess on-board audio processing capability. However, it can disembed audio
carried in the SDI input signal, and pass it to an external processor (such as Miranda’s UAP-712i or DAP-
712i). It then re-embeds the processed audio into the SDI output. Up to two external processors are
supported. Communications with the external processors are handled through the audio bus via two 10-pin
connectors called “ABUS #1” and “ABUS #2” located on the card edge (see section 2.2). This interface
supports 20-bit audio processing. The source audio group (for disembedding at the input) and destination
audio group (for embedding at the output) are selectable through the menu for each bus.
Typical Applications with UAP-712i or DAP-712i: Only one audio group can be processed by these audio
cards. To mux/demux two groups, two outboard cards must be used. All other audio groups not processed
by the audio card are lost in frame sync mode. When used alone, the UVP-101i will pass the audio but a
couple of audio frames could be lost in frame sync mode. The audio is not affected in delay mode (or frame
buffer mode).
Figure 4.1 Typical applications of the UVP-101i with UAP-712i or DAP-712i audio processors
4:2:2 + AES
UVP-101i
DEMUX
Frame
Sync
Proc
Amp
Case A: AES is extracted on UVP-101i, processed on UAP-712i or
DAP-712i, and re-inserted on UVP-101i
UAP-712i or DAP-712i
AES
Analog
Audio
Delay
Proc
Audio
4:2:2 + AES
NTSC
MUX
Encoder
NTSC
4:2:2 + AES
NTSC
UVP-101i
UAP-712i or DAP-712i
AES AES
Analog
Audio
Decoder
MUX
Frame
Sync
Proc
Amp
Encoder
Delay
Proc
Audio
Case B: Audio from the UAP-712i or DAP-712i is inserted into the UVP-101i
4:2:2 + AES
UVP-101i
UAP-712i or DAP-712i
AES
Analog
Audio
Frame
Sync
Proc
Amp
Delay
Proc
Audio
Case C: AES is extracted on the UVP-101i and processed
on the UAP-712i or DAP-712i
DEMUX
4:2:2 + AES
NTSC
MUX
Encoder