Sennheiser ASP 2 User manual

Antenna Splitter 1:4
ASP 2
Instructions for use
13

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Brief description
The ASP 2 passive RF antenna splitter has been designed for
routing antenna signals to several receivers in a multi-channel
system, i.e. up to four diversity receivers are supplied with the
signals of only two antennas. The antenna splitter incorpora-
tes DC distribution for powering up to four receivers in addi-
tion to two antenna boosters via a single mains unit. By lin-
king two ASP 2 antenna splitters, an 8-channel system can be
operated with only two antennas.
By using the GA 2 rack adapter, two antenna splitters or one
antenna splitter and one rack-mount receiver (e.g. EM 100 G2,
EM 300 G2 or EM 500 G2) can be mounted into a 19" rack.
Areas of application:
!Small to medium RF installations (fixed or mobile)
!Permanent installations in small theaters, conference
centers and similar venues
Delivery includes
!1 ASP 2 antenna splitter
!1 set of plastic feet
!Instructions for use

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Safety instructions
Caution!
Never open the unit! If units are opened by you in breach of
this instruction, the warranty becomes null and void.
Attention!
Make sure that the air vents of the unit are not covered or blo-
cked! Keep the unit away from central heating radiators and
electric heaters!
Caution!
Set up the unit on an even surface or mount it into a rack! Lay
the cables in such a way that no-one can stumble over them!
Attention!
Keep liquids and small parts which conduct electricity away
from the unit! Use a slightly damp cloth for cleaning the unit.
Do not use any solvents or cleansing agents!

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Operating controls
DC input (DC IN) for mains unit
Cable grip for power supply DC cable
Four DC outputs (DC OUT) for powering up to
four receivers
Antenna input B (IN B, DC-FEED 12 V), BNC socket
Four antenna outputs (OUT B), B leg
Four antenna outputs (OUT A), A leg
RF output A (link to antenna input B  to make
a 1-to-8 splitter), BNC socket
Antenna input A (IN A, DC-FEED 12 V), BNC socket
      

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Putting the unit into operation
The below connection diagram shows the connections for a
4-channel diversity system.
Setting up the unit
The unit is suitable for use as table top or can be mounted into
a rack.
왘For mounting the unit into a 19" rack, use the GA 2 rack
adapter (optional accessory).
왘For table top use, fix the plastic feet to the base of the unit.
Note:
Some furniture surfaces have been treated with varnish,
polish or synthetics which might cause stains when they
come into contact with other synthetics. Despite a tho-
rough testing of the synthetics used by us, we cannot rule
out the possibility of staining.

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Connecting the antennas
왘You can connect the following antenna types to the
antenna inputs  and :
!two A 1031-U or A 2003-U passive antennas or
!two A 12 active antennas or
!a combination of passive antenna (A 1031-U or
A 2003-U) and antenna booster (AB 2).
Connecting the receivers
You can connect up to four rack-mount receivers (e.g.
EM 100 G2, EM 300 G2 or EM 500 G2) to the ASP 2. The split-
ter incorporates DC distribution for powering the receivers.
왘Pass the cables coming from the antenna spitter’s DC out-
puts  through the cable grips at the rear of the recei-
vers.
왘Insert the hollow jack plugs into the sockets of the recei-
vers.
왘Connect the BNC cables and of the antenna splitter to
the receivers as follows:
!Antenna outputs (OUT A) to antenna inputs (ANT I) 
!Antenna outputs (OUT B)  to antenna inputs (ANT II) 
Note!
We recommend protecting unused RF outputs with a 50 Ω
terminator in order to keep to the specified distribution
attenuation.
ASP 2

 
A
SP 2

ASP 2
 
E
M 500 G2

E
M 500 G2

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Connecting the mains unit
The NT 1 mains unit can power up to four receivers. The DC
power is also available at the antenna inputs for powering two
optional antenna boosters.
왘Pass the cable through the cable grip .
왘Insert the DC connector on the power supply cable into the
DC input .
Note:
The antenna splitter has no power switch.


ASP 2

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If problems occur...
Error checklist
If problems occur that are not listed above or if the problems cannot be solved with
the proposed solutions, please contact your local Sennheiser agent for assistance.
Problem Possible cause Possible solution
Receivers cannot be
switched on
Receivers are not powered Check the connections of
the mains unit or the DC
connections
Disturbed reception or no
reception
Transmitting antennas are
not within the range of the
receiving antennas
Reduce the distance
between transmitter and
receiving antennas
Transmitters or receivers
are not switched on
Switch the transmitters or
receivers on
Antennas are not
connected correctly
Check the antenna
connections
Connecting cables are
defective
Replace the connecting
cables
Too high cable attenuation
due to too long antenna
cables or wrong type of
antenna cable
Only use the
recommended antenna
cables (see ”Accessories“
on page 21)
or use shorter antenna
cables
Transmitters and receivers
are not on the same
frequency
See operating manual of
the transmitter or receiver

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Specifications
Antenna splitter 2 x 1:4 or 1 x 1:8, passive
Frequency range 500 to 870 MHz
Distribution attenuation approx. 10 dB IN B/OUT B (4 x)
approx. 14 dB IN A/OUT A (4 x)
approx. 6 dB IN A/OUT A
Dimensions approx. 212 x 145 x 38 mm
Weight approx. 700 g
Voltage range 12 V DC nominal, max. 16 V DC
Accessories
NT 1 Mains unit for powering up to four receivers and two antenna
boosters, European version
NT 1-120 Mains unit for powering up to four receivers and two antenna
boosters, 120 V version
NT 1-UK Mains unit for powering up to four receivers and two antenna
boosters, UK version
GZL 1019-A1 BNC-BNC coaxial cable, length 1 m
GZL 1019-A5 BNC-BNC coaxial cable, length 5 m
GZL 1019-A10 BNC-BNC coaxial cable, length 10 m
A 1031-U Passive UHF antenna
AB 2 Antenna booster
GA 2 19” rack adapter
AM 2 Antenna mount for mounting antennas to the front of
the GA 2
A 2003-UHF UHF directional antenna
A 12 Active UHF directional antenna
BNC terminator (50 Ω)
Voltage isolation adapter

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Application example
Two ASP 2 antenna splitters can be linked to make a 1-to-8
diversity splitter.
Connections for an 8-channel system
Linking two 4-channel systems

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ENGLISH
The guarantee period for this Sennheiser product is 24 months from the date of purchase.
Excluded are accessory items, rechargeable or disposable batteries that are delivered with the
product; due to their characteristics these products have a shorter service life that is principally
dependent on the individual frequency of use.
The guarantee period starts from the date of original purchase. For this reason, we recommend
that the sales receipt be retained as proof of purchase. Without this proof (which is checked by
the responsible Sennheiser service partner) you will not be reimbursed for any repairs that are
carried out.
Depending on our choice, guarantee service comprises, free of charge, the removal of material
and manufacturing defects through repair or replacement of either individual parts or the entire
device. Inappropriate usage (e.g. operating faults, mechanical damages, incorrect operating
voltage), wear and tear, force majeure and defects which were known at the time of purchase
are excluded from guarantee claims. The guarantee is void if the product is manipulated by non-
authorised persons or repair stations.
In the case of a claim under the terms of this guarantee, send the device, including acces-sories
and sales receipt, to the responsible service partner. To minimise the risk of trans-port damage,
we recommend that the original packaging is used. Your legal rights against the seller, resulting
from the contract of sale, are not affected by this guarantee.
The guarantee can be claimed in all countries outside the U.S. provided that no national law
limits our terms of guarantee.

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Konformitätserklärung
Sennheiser electronic GmbH & Co. KG erklären, dass die-
ses Gerät die anwendbaren CE-Normen und Vorschriften
erfüllt.
Approval
Sennheiser electronic GmbH & Co. KG declare that this
device is in compliance with the applicable CE standards
and regulations.
Certification
Sennheiser electronic GmbH & Co. KG déclarons que cet
appareil est en conformité avec les normes CE.
Certificazione
Sennheiser electronic GmbH & Co. KG diachiara che
questo apparecchio risponde alle normative e alle
prescrizioni CE applicabili.
Autorizacion
Sennheiser electronic GmbH & Co. KG declara que este
aparato cumple las normas y directrices de la CE aplica-
bles.
Vergunning
Sennheiser electronic GmbH & Co. KG verklaren, dat dit
toestel voldoet aan de toepasselijke CE-normen en voor-
schriften.
Diese Service-Nummer gilt nur für Deutschland

Sennheiser electronic GmbH & Co. KG
30900 Wedemark, Germany
Phone: [phone]
Fax: [phone]
www.sennheiser.com
Printed in Germany Publ. 12/03 90686/A01