Assembly Instructions
Grundig SAT SystEms
A
CLASS
KLASSE
Terrestrial FM amplifi er
HRM 325
A
KLASSE
CLASS
GSS
Grundig SAT Systems GmbH
Beuthener Straße 43
English
Assembly Instructions
D-90471 Nuremberg
Phone: +49 (0) 911 / 703 8877
Fax: +49 (0) 911 / 703 9210
E-mail: info@gss.de
Internet: http://www.gss.de
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Contents
1 Safety regulations ................................................................................................ 3
2 General information ............................................................................................4
2.1 Scope of delivery ................................................................................... 4
2.2 Meaning of the symbols used .................................................................. 4
2.3 Technical specifications .......................................................................... 4
2.4 Description ........................................................................................... 5
3 Installation ..........................................................................................................6
3.1 Installing the cassette in the head-end station ............................................. 6
3.2 EMC regulations .................................................................................... 7
3.3 Connecting the cassette .......................................................................... 7
4 Setting the cassette ..............................................................................................8
5 Final procedures ..................................................................................................9
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1 Safety regulations
• Assembly, installation and servicing should be carried out by authorised
electricians.
• Switch off the operating voltage of the system before beginning with assembly or service work or pull out the mains plug.
• Do not perform installation and service work during thunderstorms.
• Install the system so it will not be able to vibrate…
- in a dust-free, dry environment
- in such a manner that it is protected from moisture, fumes, splashing
water and dampness
- somewhere protected from direct sunlight
- not within the immediate vicinity of heat sources
- in an ambient temperature of -20 °C to +50 °C.
• Ensure that the head-end station is adequately ventilated. Do not cover
the ventilation slots.
• Beware of short circuits
• No liability is accepted for any damage caused by faulty connections or
inappropriate handling.
• Observe the relevant standards, regulations and guidelines on the instal-
lation and operation of antenna systems.
• Earth the SAT receiver in accordance with DIN EN 50083-1 / 60728-11
and VDE 0855 (earthed, equipotential bonding rail).
• For further information please read the assembly instructions for the
head-end station used.
Take action to prevent static discharge when working on the device.
Electronic devices should never be disposed of in the household rubbish.
In accordance with directive 2002/96/EC of the European Parliament
and the European Council from January 27, 2003 which addresses old
electronic and electrical devices, such devices must be disposed of at a
designated collection facility. At the end of its service life, please take
your device to one of these public collection facilities for proper disposal.
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2 General information
2.1 Scope of delivery
1 HRM 325 cassette
1 Distance adapter set
1 CD (assembly instructions)
2.2 Meaning of the symbols used
Important note
—> General note
• Performing works
2.3 Technical specifications
The requirements of the following EU directives are met:
73/23/EEC, 89/336/EEC
The product fulfils the guidelines and standards for CE labelling.
HF input:
Input frequency range: 87.5 … 108.0 MHz
HF-Output:
Output frequency range: 87.5 … 108.0 MHz
Output level: max. 100 dBµV
Output impedance: 75 Ω
Level adjustment: 9 … 20 dB
Amplification: 43 dB ± 1.5 dB
Noise level: 6 … 9 dB
Traps : Quantity: 6
Tuning range: 87.5 … 108.0 MHz
Attenuation: typ. 15 dB
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2.4 Description
This cassette is for the reception of FM radio programmes. The signals within
the frequency range of 87.5 … 108 MHz are amplified by approx. 43 dB.
signals can be supplied to the cable network via the FM amplifier. This involves
sending the FM signals via an IEC socket to the FM amplifier. To eliminate interference, up to 6 different input frequencies can be lowered with tuneable traps.
The amplified HF signals are supplied to the cable network via the HF output of
the FM amplifier and the HF output collector of the head-end station.
The output level can be set at the HF output collector of the head-end station.
The software version of the control unit appears on the two-line LC display after
switching on the head-end station.
The cassette is intended for operation in the following head-end stations:
– STC 1200
– STC 316
– STR 19-8
– PST 19-1
FM
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3 Installation
3.1 Installing the cassette in the head-end station
– Ensure the head-end station is mounted so it will not be able to vibrate.
Avoid, for example, mounting the head-end station onto a lift shaft or any
other wall or floor construction that vibrates in a similar way.
– Before installing or changing a cassette unplug the power cable from the
mains power socket.
• Remove the fastening screws
1 of an unoccupied slot from the bracket of the
head-end station.
• Insert the cassette in this slot and push it into the housing.
• Align the cassette and apply slight pressure to connect it to the connections of
the board and the HF bus bar.
• Fasten the cassette with the 1 screws.
1
0°
+
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+<%5,'9(567b5.(5
ACHTUNG!
Vor dem Kassettenwechsel
MESSAUSGANG
unbedingt
denNetzstecker ziehen.
–20 dBμV
CAUTION!
AUSGANG
Before
changing cassettes remove
max. 106 dBμV
mains plug.
*UXQGLJ6$76yVWePV
1
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3.2 EMC regulations
To comply with the current EMC regulations, it is necessary to connect the
lines leading in and out of the head-end station using cable terminals.
When mounting the cassette in an STR 19-8 head-end station which is in-
stalled in a 19” cabinet, make sure the connections leading in and out for
the 19” cabinet are made using cable terminals.
• Insert the required number of cable terminals in the openings provided in the
”
head-end station or in the 19
cabinet.
—> Cable terminals are not included in the scope of delivery.
Tighten the nut on the cable terminals until the teeth on the lock washer have
penetrated the exterior coating and a good connection is made between the
housing and cable terminal.
3.3 Connecting the cassette
+
• Connect the HF input cable to the ”HF input” of the cassette.
HF input
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4 Setting the cassette
In order to prevent interference, too high signal levels, e. g. of local transmitters,
can be reduced by absorption circuits.
• Switch on the head-end station.
The display shows the following indication for the FM amplifier.
—>
Box 1 FM
87 – 108 MHz UKW
• Connect a spectrum analyser to the HF output of the head-end station.
• Set ”input level regulator” to the mechanical centre.
+
Input level
regulator
Traps
4 … 6
Tra ps
1 … 3
• If necessary tune the absorption circuit groups ”Traps 1 … 3” and ”Traps 4 … 6”
to the frequencies to be lowered.
—> You can lower 3 interfering frequencies each with the absorption circuit
groups ”Traps 1 … 3” and ”Traps 4 … 6”. If the adjustment range of an
absorption circuit, for example from group ”Traps 1 … 3” is inadequate,
you can lower the frequencies
is tuned to the same frequen
Example of the progression of the tunable acceptor circuits
0 db
-4 db
-8 db
-12 db
-16 db
-14 db
even further with an absorption circuit that
cy from group ”Traps 4 … 6”.
-17 db
Frequency
8014015,195,78
in MHz
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• When all of the signals are appropriately adjusted, use the ”input level regulator” to increase the input level so that it is short of the intermodulation inter-
vention point.
5 Final procedures
After installing the head-end station, upgrading accessories or installing cas-
settes it is necessary to tighten all cable connections, cable terminals and
cover screws in order to maintain compliance with current EMC regulations
securely.
• Securely tighten the cable connections using an appropriate open-ended
spanner.
• Measure the output levels of the other cassettes and tune them to a uniform
output level using the appropriate level controls or software dependent on the
head-end station used. Please regard the assembly instructions of the respective head-end station.
—>
In order to prevent interference within the head-end station and the cable system, the output levels of the digital cassettes must be set lower by
8 dB compared to analogue cassettes.
• Mount the front cover (s. assembly instructions of the head-end station).
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Service:
Phone: +49 (0) 911 / 703 2221
Fax: +49 (0) 911 / 703 2326
Email: service@gss.de
Alterations reserved. Technical data E. & O.E. © by GSS GmbH 26052009
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