User's Manual

4
8
MPEG4 reduced frame rates be employed when the unit is operating at
low bitrates (1.25MHz bandwidth FEC1/3).
Video Bitrate
This control can be used to set the video bitrate within the constraints of
capacity available in the channel, but only when “Chaining Input” is set
to ON.
For normal SOLO transmitters, chaining CANNOT be enabled, and as
such video bit rate control is automatic.
The video bit rate is automatically maximised in each configuration
when “Chaining Input” is turned off.
Horizontal resolution
The video coding resolution can be selected from 704, 528, 480 and
352 pixels. Changing the horizontal resolution to lower values will make
the coded picture softer.
Care should be taken to match the horizontal resolution to the resolution
of the camera connected to the transmitter; this will give best image
results.
Audio Encoder
The Audio can be turned on and off with this control. Audio is OFF by
default, but there are several audio modes that vary from very high
quality to speech grade that can be selected with this control. Enabling
audio will degrade the video quality, because some of the available data
capacity is diverted away from video to audio. Selecting high fidelity
audio modes will degrade the video quality more than lower fidelity
audio modes. The Audio encoder can also be switched to 32 kHz and
48 kHz MPEG Layer 1 modes; from software V3.3 upwards.
Note: The Solo4 receiver only supports 48 kHz sampling in MPEG Audio mode
and bit-rates in the range 192 to 448kbits/s.
Audio Input Level
This control is used to define the audio gain to be applied to the audio
input signal. 0dB is used for line level audio and various options up to
48dB of gain can be applied for microphone inputs.
Unit Name
This field allows the user to enter an identifier for the service that they
wish to transmit. This must match that selected at the receiver for the
service to be decoded. The unit name can be constructed of any eight
ASCII characters.