Sdi Input; Sdi Outputs; Audio Connections; Analogue Audio Inputs - Sonifex Redbox RB-VHDMA8 User Handbook Manual

SDI Input

The SDI input is connected using a single female BNC and has a 75Ω input impedance. It is
a triple rate SDI receiver with automatic input rate detection and equalisation. It supports
the full range of 3G, SD and HD standards from NTSC and PAL up to 1080p 60Hz. The status
of the input is displayed on the status LEDs on the front panel. When the SDI input rate
and format has been detected, the SDI lock indicator will be lit.

SDI Outputs

The two SDI outputs are connected using the two female BNC connectors on the rear
panel. They have a 75Ω output impedance in accordance with the SMPTE standard and are
both re-clocked and independently buffered. Each output can be configured separately for
embedding and group deletion settings.

Audio Connections

Analogue Audio Inputs

The RB-VHEMA8 has eight analogue input channels which are separated into two
banks of four channels. The analogue audio inputs are converted to digital audio using
high performance, low noise stereo 24-bit ADCs. They are connected using balanced
connections through the D-type connectors or unbalanced connections through BNC
connectors, all are available on the rear panel. The balanced analogue inputs can be wired
unbalanced by connecting non-phase (-) pin to the ground pin for that input, and then
connecting the audio signal to the phase (+) pin.
The two input types are connected internally, so ensure that only one type of connection is
used per input.
Full Scale Setting
The analogue input full-scale settings, which determine the full-scale 0dBFS level for the
digital audio, are set internally via jumpers. They are factory set to +18dBu by default.
Full-scale Settings
+12dBu
+18dBu
+24dBu

Audio Input Gain Adjustment

The default audio input gain is unity. However, to accommodate lower or higher level
sources it is possible to introduce gain or attenuation on a per channel basis. Each audio
input has an adjustable gain range from -24dBu to +24dBu in 0.5dB increments. This is set
using the remote Control ports. Once set, this value is stored and reloaded each time the
unit is powered on.
Redbox Embedder/De-embedder User Handbook
Jumper
JP1
Not fitted
Fitted
Not fitted
R B - V H E M A 8
JP2
Not fitted
Not fitted
Fitted
3
19