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Instructions for Use - Page 12
Active Transmitter Combiner 4:1
AC 2
Instructions for use
11
Instructions for Use - Page 13
... combiner ! 1 set of application: ! Instructions for any application where
talk-back signals are to be combined onto a single antenna. Multi-channel systems suitable for use ! Areas of plastic feet ! Multi-channel in-ear monitoring systems for powering the transmitters. The AC 2 also incorporates DC distribution for broadcast or
stage use
Note: The NT 3 mains unit must be mounted...
Instructions for Use - Page 14
Never open the unit! Attention! Caution! Keep liquids and small parts which conduct electricity away from central heating radiators and electric heaters! Use a slightly damp ...
13 If units are opened by you in such a way that the air vents of this instruction, the warranty becomes null and void. Danger!
Set up the unit on an even surface or mount it into a rack!
Keep the unit away ...
Instructions for Use - Page 15
Operating controls
ᕡ·
»
¿
¶
²
´
³ Red LED for operation indication · On/off switch (POWER) » DC input (DC IN) for mains unit ¿ Cable grip for power supply DC cable ´ Four DC outputs (DC OUT) for powering up to
four transmitters ² Four BNC cables (RF INPUTS) ¶ BNC socket (RF OUTPUT)
14
Instructions for Use - Page 16
..., use the GA 2 rack
adapter (optional accessory). ̈ For table top use as table top or can be mounted into a rack. ̈ For mounting the unit into operation
The below connection diagram shows the connections for use , fix the plastic feet to the base of staining.
15
Setting up the unit The...
Instructions for Use - Page 17
...; of the GA 2 rack adapter by using the AM 2 antenna mount (optional accessory).
Connecting the antenna The combiner combines the transmission signals of up to four transmitters onto a single antenna. ̈ Connect the BNC cables of the combiner to the BNC
sockets µ of the transmitters.
̈ Connect the telescopic antenna of one of the transmitters to the BNC socket ¶...
Instructions for Use - Page 18
... the problems cannot be solved with the proposed solutions, please contact your local Sennheiser agent ...antenna is ready for assistance.
17 Note:
As soon as possible. If problems occur ... Use
low-loss RF cables which are not covered or blocked.
The combiner does not transmit a signal ̈ Check the connections of the unit are as short as the combiner is powered via the NT...
Instructions for Use - Page 19
... V DC ±5 %
Current consumption
max. 1.5 A +1 A for powering the transmitters
Accessories
NT 3
NT 3-120
NT 3-UK
GZL 1019-A1 GZL 1019-A5
A 1031-U GA 2 AM 2
A 2003-UHF
Mains unit for AC 2 and four transmitters (e.g. SR 300 IEM G2), UK version
BNC-BNC coaxial cable, length 1 m
BNC-BNC coaxial cable, length 5 m
Passive UHF antenna
19" rack adapter
Antenna mount for AC 2 and four...
Instructions for Use - Page 20
...our choice, guarantee service comprises, free of charge, the removal of material and manufacturing defects through repair or replacement of this Sennheiser product is manipulated by nonauthorised persons or repair stations. To minimise... a claim under the terms of either individual parts or the entire device. Excluded are accessory items, rechargeable or disposable batteries that the original...
Instructions for Use - Page 34
Sennheiser electronic GmbH & Co. KG 30900 Wedemark, Germany Phone: +49 (5130) 600 0 Fax: +49 (5130) 600 300 www.sennheiser.com
Printed in Germany
Publ. 12/03
90684/A01
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