Sonifex SM-24, Руководство пользователя, Страница: 14 / 68

2
Station Master & Talkback Intercoms Handbook
S TAT I O N M A S T E R
I N T R O D U C T I O N
ST
A
TION MASTER INTRODUC
TION
1
Monitoring
The Station Master is fitted with either a pair of true PPM meters, or VU meters, for
monitoring up to 8 stereo sources. These sources consist of the connected studios and four
external sources such as news feeds or off air receivers. The audio can be monitored via
headphones or output through a power amplifier capable of driving 10W into 8
>
speakers.
There are also two ¼” jack insert points for using the Station Master to monitor from
a jack-field.
Audio Distribution
Station Master distributes the 4 incoming stereo signals to each of the connected studios
without the need for external distribution amplifiers. These signals, such as off-air receivers,
news feeds and outside broadcasts, can be professional balanced inputs or at domestic
unbalanced line levels. The gain of the incoming stereo signals can be adjusted from the
front panel. Distribution gain is controlled by a preset potentiometer.
Talkback
The Station Master’s talkback system acts as the master station for talkback with 4 satellite
systems. These can either be the connected studios or other locations such as a record
library or engineering workshop. Individual satellites can talk to each other or broadcast to
all stations.
Logging
To allow for logging of broadcasts the Station Master has a stereo balanced output for
professional logging equipment, together with 3 sets of phono unbalanced outputs for
connection to domestic VCR equipment.
Power Failure
In the event of a power failure to the Station Master, it will continue to route the current on-
air studio to the stereo transmission output. Also, when power is re-applied to the Station
Master, all switching, including the offer and accept switching, will instantly re-initialise to
the configuration when power was lost. This means that your on-air studio can continue
transmitting, even if power to the Station Master has failed.
Installation Notes
Atmosphere
The Station Master should be installed in an area which is not subject to excessive heat or
cold. Also, you should avoid installing it in atmospheric conditions which are dusty, smoky
or dirty, or where there is moisture or vibration.
Do not use liquids to clean the front of the Station Master - wiping with a soft, dry
cloth is advised.
Electromagnetic Radiation
Note
that there can be a degradation of the audio quality if the Station Master is used near
to strong sources of electromagnetic radiation. Strong sources include video monitors, and
mains cabling.