User`s manual

USER`S MANUAL FM-SPY-T
File: FM-SPY-T Manual E.DOC MEDIA ENGINEERING page 12/41
A.4. CABLING
Connect an antenna cable to the “RF Input A” or “RF Input B” socket of the FM-SPY-T.
These inputs are featuring F-type connectors (female chassis receptacles) with 75Ω
impedance.
FM-SPY-T (back view)
A matching coaxial antenna cable is needed. Contact your FM-SPY-T dealer for advice on a
suitable cable to use. In case of using 75Ω antenna cables with IEC type of connectors two
adapters F-IEC are supplied with every FM-SPY-T.
Both antennae inputs are DC-free decoupled with RF transformers. This means the
antennae inputs are completely earth-free; they are not having a connection to the chassis or
to earth via the power cord. This decoupling prevents that the potential of the antenna cable
(which is very seldom earth) is short-circuited with the earth supplied by the power supply, for
this were leading to compensation currents which in turn is the most often reason for hum
problems on the analog audio outputs.
The FM-SPY-T has two transformerless servo balanced analog audio outputs (left & right
channel) and a transformer coupled digital audio output (AES/EBU digital audio) on its rear
side via standard XLR connectors. A headphones output connector (standard 1/4” Jack) on
the front side is also provided. Only attach appropriate audio monitoring devices to these
outputs of the FM-SPY-T.
Connect the AC Mains Lead to the “AC mains input” socket of the FM-SPY-T. Caution: wrong
handling may cause electric shocks (see A.1.3.: CAUTION WITH THE MAINS CABLE on
page 7/22).
RF Input A
A
C mains in
p
ut
RF In
p
ut B
switch OFF-POWER-ON