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Rack Installation; Conformity And Approval; Operation - JTS US-902D/5 Instruction Manual

Diversity uhf dual receiver
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For cleaning only use a dry, soft cloth; never use
chemicals or water
No guarantee claims for the units or liability for
any resulting personal damage or material damage
will be accepted if the units are used for other
purposes than originally intended, if they are not
correctly connected or operated, or if they are not
repaired in an expert way
If the units are to be put out of operation
definitively, take them to a local recycling
plant for a disposal which is not harmful to
the environment
3 Applications
In combination with two transmitters MH-920 / 5 or
PT-920B / 5 from JTS, the dual receiver US-902D / 5 makes
up a wireless audio transmission system which is ideally
suited for musicians and live performance on stage
The transmission range depends on local conditions;
a maximum range of 100 m may be reached For audio
transmission, 16 channels are available, to be freely
selected in the UHF frequency range of 518 – 542 MHz
Both receiver units use the "diversity" technology:
The signal transmitted is received by two antennas
placed at a distance from each other and then checked
for its quality The signal with the highest signal quality
will be used

3.1 Conformity and approval

Herewith, MONACOR INTERNATIONAL declare that
the receiver US-902D / 5 complies with the directive
2014 / 53 / EU The EU declaration of conformity is avail-
able on the Internet:
www jts-europe com
Restrictions or requirements apply in the following
In the Federal Republic of Germany, the receiver re-
quires a frequency assignment (for which a fee is
charged) In other countries, it is necessary to apply
for a corresponding approval Prior to operating the
unit outside Germany, please contact the MONACOR
subsidiary or the corresponding authorities of the re-
spective country Links to the national authorities can
be found via the following Internet address:
www cept org
t Topics
t Other spectrum topics: SRD Regulations and
indicative list of equipment sub-classes
t EFIS and National Frequency Tables

4 Rack Installation

The dual receiver is provided for use as a table top unit
or for the installation into a rack for units with a width
of 482 mm (19") For rack installation, unscrew the four
feet, and screw the two supplied mounting brackets
with two screws each to the front at the left and the
right sides of the housing
5 Connection
1) Insert the two supplied antennas (4) into the BNC
jacks ANT 1 and ANT 2 (10) and put them in a ver-
tical position
Hint: To increase the range and the interference resist-
ance, use antenna amplifiers from JTS (e g UB-900I) The
antenna jacks of the receiver supply the amplifiers with
2) For connection to the subsequent unit (e g mixer,
amplifier), the following audio outputs can be used:
– bal XLR outputs CH 1 and CH 2 (11) for the output
signals of the individual receiver units, for connec-
tion to a balanced microphone input
– unbal 6 3 mm jack AF MIXED OUTPUT UNBAL (8)
for the master signal of the two receiver units, for
connection to a line input (a matching connection
cable is supplied)
3) Connect the supplied power supply unit to the power
supply jack (9) and to a mains socket (230 V / 50 Hz)

6 Operation

Switch on the receiver with the switch POWER (3)
The display (7) shows the channel indications (f) of the
transmission channels adjusted for the two receiver
units As long as a receiver unit does not receive a radio
signal of sufficient strength, it is muted [muting symbol
(g) is displayed]
Make the following adjustments separately for each
receiver unit
1) Switch on the transmitter If the channel indication (f)
displays a different channel than the one ad justed on
the transmitter, adjust the receiver unit to the channel
of the transmitter:
If the transmitter and the receiver unit have been
adjusted to the same channel and if the strength of
the radio signal received is sufficient, muting is de-
activated [muting symbol (g) disappears] One of the
the two antennas receives the radio signal of higher
strength The indication RF (c) indicates the reception
quality: the more segments are displayed, the better
the reception
If the reception is poor or disturbed, please check
– if the reception can be improved by using a differ-
ent channel
chapter 6 1
(e) lights up to indicate which of



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