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Overview of controls
The basic con
fi
guration of the device is made using jumpers:
Element
Delivery
status
Operating mode:
Operation only with forwards path, including band I (47-1006 MHz)
or
X1, X2, X3, X4
Operation with return path (5 – 65 MHz) and forwards path (85-1006 MHz)
X
Forwards path:
Setting for the gain (40 / 34 / 30 dB) via interstage attenuation
X5
34 dB
Setting for the interstage pre-emphasis (0 / 6 dB)
X6
6 dB
Return path:
Setting for the operating mode for the return path ampli
fi
er active / passive /
switched off
X7, X8
switched off
Connection of an attenuation (10 dB) to the input of the return path ampli
fi
er
X9
10 dB
Setting for the interstage pre-emphasis (0 / 3 / 6 dB)
X10
0 dB
Test socket 1:
The test socket 1 must be enabled during the measurement.
X11
switched off
Option:
Insert position for additional functions in the forwards path
X12
0 dB bridge
The ampli
fi
er is levelled using rotary switches:
Forwards path:
Setting for the attenuation on the ampli
fi
er input (0 – 20 dB in 1 dB steps)
S1
20 dB
Setting for the equalisation on the ampli
fi
er input (0 – 20 dB in 1 dB steps)
S2
0 dB
Return path:
Setting for the interstage attenuation (0 – 20 dB in 1 dB steps)
S3
0 dB
Set-up
Before switching on the ampli
fi
er, i.e. before connecting the remote feed path that supplies power or connecting a remote feed
transformer, make sure that:
1. The RF cable connections on the ampli
fi
er’s inputs and outputs are correctly installed and connected
2. The fuses (= connection elements) in the RF paths, through which the remote power feed is planned to be delivered and
which at this point in time already can be delivered (involving perhaps installation work at the next downstream ampli
fi
er point),
have been inserted.
Do not switch on the AC remote feed voltage at the VOS 138/RA and VOS 139/RA until the ampli
fi
er has been fully installed, i.e. only
after the RF connections and the potential equalisation have been connected.
An external remote feed voltage on the VOS 139/RA (power passing) is connected using the speci
fi
ed terminal in the power supply
casing (max. 5 A).
Use only genuine fuses and power cables as replacements!
■
Replacement fuses:
T 800mAE 250 V
BN 094 070
T 2AH 250 V
BN 094 039
T 6.3AH 250 V
BN 094 078
The spare parts can be obtained through:
ESC Electronic Service Chiemgau GmbH - Bahnhofstraße 108 - 83224 Grassau GERMANY
Tel. +49 8641 9545-0 - Fax +49 8641 95 45-35 and -36
Internet: www.esc-kathrein.de – e-mail: [email protected]
If several ampli
fi
ers are fed from one remote feeding
transformer, it is crucial to ensure that the polarity is
correct! Risk of short circuits!
Before changing the power supply unit fuse or the remote feed fuses (= connection elements) always disconnect
the power plug or disconnect the remote feed voltage!
