Sennheiser ASP 2 Manual de usuario
Antenna Splitter 1:4
ASP 2
Instructions for use
13
14
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
15
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!
16
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
17
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.
18
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
19
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
20
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
21
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
22
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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2
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