Sennheiser SZI 1019 A Manual page 8

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Further mounting aids offered by Sennheiser are the ball joint GZG
1019
A and adapter bar MZS1019,
The ball joint should always be used, as it permits optimum alignment of the radiator.The
adapter bar is used wherever two radiators are to be mounted on a tripod or one wall or ceiling
attachment (see "Installation examples").
Important note: In all cases, ensure that the radiator receives sufficient ventilation.
In order to permit optimum radiation of the infrared light, the radiator should be installed, wherever
possible, such that there are no obstacles between it and the infrared receivers. This can be achie-
ved by mounting the radiator as high as possible, and tilting it slightly downwards. In order to
ensure that the signal is as uniform as possible within the room, the radiators should be spread
around the room. Please note that minimum distance between the radiator and an infrared receiver
should be 2 m, as there is otherwise a danger of over driving the receiver input stage, which can
result in distortion of the signal.
Connection of the radiator
After the radiator has been installed, insert the enclosed 5 m mains cable in socket @ and connect
the plug to apower outlet. The radiator is now in standby mode.
When it leaves the factory, the radiator is set for operation from
220 Vl50
Hz supplies. For opera-
tion from
115-V
supplies, 3 wire straps must be repositioned within the radiator. The procedure is
illustrated in Rgures 2-4. Note that the 0.63 A fuse has to be replaced by a 1 A fuse.
0
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Figure 2
Figure 3
-..115V
-220V
Figure 4
After connection of the radiator to the power outlet, it is only necessary to establish the connection
between RF input @ of the SZI1019 A and the RF output of the control transmitter. The following
coaxial cables are available for this purpose: GZL 1019 A 1 (BNC/BNC, length: 1 m), GZL 1019 A 5
(BNC/BNC, length: 5 m), and GZL 1019 A 10 (BNC/BNC, length: 10 m). The cables can also be
connected together with the aid of the double BNC socket GZV 1019 A. For permanent installation,
commercially available 50 n coaxial cables such as RG 58 can be used. If more than one
SZI1019 A is to be installed, radiators are simply connected in series. To do this, connect RF output
socket @ of the first radiator to the RF input socket of the second radiator. A maximum of 100 radia-
tors may be connected in series. The maximum cable length between the control transmitter and
last radiator should not exceed 1,500
m.
Note:
In the case of cable lengths greater than 300 m, the last radiator should be terminated with a
terminal resistance of 50 n (type SZA 1060) in order to prevent standing waves.
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