Overview Of Controls - Kathrein VOS 137/RA Manual De Instrucciones

Overview of controls

The basic confi guration of the device is made using jumpers:
Operating mode: Operation only with forwards path, including band I (47-1006 MHz)
or
Operation with return path (5 – 65 MHz) and forwards path (85-1006 MHz)
Forwards path: Setting for the gain (40 / 34 / 30 dB) via interstage attenuation
Setting for the interstage pre-emphasis (0 / 6 dB)
Return path: Setting for the operating mode for the return path amplifi er active / passive /
switched off
Connection of an attenuation (10 dB) to the input of the return path amplifi er
Setting for the interstage pre-emphasis (0 / 3 / 6 dB)
Test socket 1: The test socket 1 must be enabled during the measurement.
Option: Insert position for additional functions in the forwards path
The amplifi er is levelled using rotary switches:
Forwards path: Setting for the attenuation on the amplifi er input (0 – 20 dB in 1 dB steps)
Setting for the equalisation on the amplifi er input (0 – 20 dB in 1 dB steps)
Return path: Setting for the interstage attenuation (0 – 20 dB in 1 dB steps)
Set-up
Before switching on the amplifi 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 amplifi 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 amplifi 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 amplifi 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 specifi ed terminal in the power supply
casing (max. 5 A).
Use only genuine fuses and power cables as replacements!
■
Replacement fuses:
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]
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!
T 800mAE 250 V BN 094 070
T 2AH 250 V BN 094 039
T 6.3AH 250 V BN 094 078
If several amplifi ers are fed from one remote feeding
transformer, it is crucial to ensure that the polarity is
correct! Risk of short circuits!
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Element Delivery
status
X1, X2, X3, X4
X
X5 34 dB
X6 6 dB
X7, X8 switched off
X9 10 dB
X10 0 dB
X11 switched off
X12 0 dB bridge
S1 20 dB
S2 0 dB
S3 0 dB