Inovonics AM SiteStreamer+ SOFIA 567, Installation & User Manual

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AC Mains Power
The SOFIA 567 is provided with an external, inline ‘universal’
switching power supply that accommodates mains voltages be-
tween 88VAC and 264VAC at 50 or 60Hz. Self-protection cir-
cuits obviate the need for an external fuse.
The power supply has a detachable IEC-type power cord fitted
with a North-American-standard male plug. If you need to re-
place the mains plug with another, you will find that the indi-
vidual conductors of the provided cord are color-coded in one
of two ways. US standards specify black for AC ‘hot,’ white for
AC neutral and green for earth ground. European CEE stand-
ards specify brown for AC ‘hot,’ blue for AC neutral and green
with a yellow stripe for earth ground.
Radio Frequency
Interference
(RFI)
Although it is expected that the SOFIA 567 will be co-located
with other radio equipment, do practice care and common
sense in locating the unit away from abnormally high RF fields.
Ground Loops
A mains frequency or RF ground loop could possibly be formed
between cable shield grounds and the AC power cord ground.
If hum or other constant noise is noted, a ‘ground-lifting’ AC
adapter may remedy the problem, although the chassis must
somehow be returned to earth ground for safety. The optional
rack-mount chassis should satisfy this requirement.
INPUTS, OUTPUTS AND PORTS
Antenna
Input and
Considerations
The rear-panel
ANTENNA
input is a BNC female, a ubiquitous
connector worldwide with readily-available adapters to other
connector types.
Several factors will guide your selection of an antenna, not the
least of which is the level and purity of the available off-air sig-
nals of interest. The selectivity of the SOFIA 567 is remarkably
good, but to optimize the signal from a desired direction, a
non-resonant loop antenna to the signal source will yield best
reception. The Inovonics PA-00 is an indoor/outdoor loop spe-
cifically designed for the SOFIA 567.
Analog
Line Outputs
Male XLR left- and right-channel
ANALOG OUTPUTS
on the rear
panel actually carry the same program signal and should be
thought of as ‘dual mono’ outputs, not L/R stereo. These are
electronically-balanced, meaning that they are ground-refer-
enced and not transformer-isolated.
Analog line outputs may be adjusted under the front-panel
Set-
up / Audio Outputs / Analog Level menu. These may be set to any
level between
–15dBu
and
+15dBu
, corresponding to 100% AM
carrier modulation. The dB levels shown beside the slider con-
trol represent the unloaded output level. These outputs have a
resistive source impedance of 200 ohms. Feeding a 600-ohm-
terminated load will drop the actual dBm level 2.5dB lower than
the figure shown by the slider.