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INFRAREDPOWER RADIATOR
SZI1012
Introduction
The infrared power radiator 8Z11 012 in connection with the
infrared transmitters 811011, 811012 or 811 019 serves to cover
large areas. The built-in power supply of the infrared transmitter
is able to feed ei 9 h t 8Z11 012 directly. The number of the
connected power radiators can be increased without limit. In this
case additional power supplies (e. g. GZN 1019) are necessary.
Description
The front panel contains 12 infrared transmitting diodes and one
LEO as function indicator. A connection cable with a length of 3 m
and a 5-pin connector ist firmly connected to the housing. This
cable carrys the modulated signals to the radiator and also the
OC-current.
The input stage works as limiter amplifier giving the guarantee of
an optimal amplitude for the built-in output stage - independent
of the output level of the infrared transmitter. The output stage is
equipped with one infrared diode for optical feedback, ensuring
linearity of the transmitted infrared signal. If the output stage is
defect the 8Z11 012 automatically switches off, together with the
red LEO function indicator.
The external supply voltage must be between 29 and 34 V.
Mounting
When positioning the power radiator please always keep in mind
that the invisible infrared light must reach the lens of the receiver
without shadowing. A direct optical connection between radiator
and receiver is the best solution. Infrared transmission by
reflections is also possiblewith certain limitations. High positioning
with a slight tilt downwards has been found advantageous in
practice.
Mounting flexibility is given by means of a 3;g" internal thread. For
portable use we recommend the table clamp MZT 237 or the floor
stand MZ8 142. Two power radiators can be adapted by using
the twin-bar MZ8 235.
The power radiator is connected to the transmitter by means of a
flexible control cable. This cable transmits the RF-signals to the
power radiators and switches on at the same time the eventually
connected power supplies
GZN 1019.
For fixed installations
this special cable (no. 12-1036) can be ordered per meter from
8ennheiser.
The radiator should preferably be used in connection with the two
channel transmitter 811012. The following rule of thumb is valid
to determine the number of power radiators required: For an area
of 2 m2 one diode is necessary, that means one power radiator
covers up to 24 m2 at stereo operation.
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Technical Data
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I
,
20mV
,
700mV
. 40 kHz . . . 400 kHz
appx. 4 kQ
950 nm
appx. 100 mW
:;; 35dB
29.
34 V
. appx. 145 mA
. by LED (red)
200 x 80 x 23
3m
. Tuchel no. T 3360-002 or
Binder no. 09-0013-00-05
1 = RF.2 = sereen
3 = - DC. 5 = + DC
appx. 450 9
Inpullevel
..
Frequeneyrange
Inpulimpedanee
.
Wavelengthof radlatedInfraredlight
Radiatedpower.
..
.
Suppression of harmonies resp.
intermodulation
DC-supply voltage.
Current eonsumption
I
Funetionindieator
..
..
Housingdimensions in mm .
,
Length of eonneetioneable
Conneetor
Weight
We reserve fhe right to aiter speeifleations.in partieularwlth regard to teehnical
improvements
!
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