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DESCRIPTION
DVB-ASI modulator in DVB-T. Admits MPEG TS input
●
signals in Packet or Burst format and deliveries modulated
signal in COFDM. DVB-ASI signal with digital programming
is converted to the RF band between 50.5 and 858 MHz
modulated in DVB-T. Handles MPEG-2 or MPEG-4 signals
enabling selection of programs delivered on output.
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INSTALLATION AND START-UP
- The power sources must be disconnected from
the mains before connecting or disconnecting the
module.
Connect the earth connection of the frame to the earth
●
connection of the antenna installation.
Fix the modules to the frame in the order shown in the
●
application example (see page 3), with the power source
on the right and the amplifier on the left of the unit.
Join the RF channel outputs (8) via the F-F coaxial bridge
●
(Ref. 83814), and load the free output of module 1 with
75 Ω, beside the power source.
Connect the Supply bus BA 807 ref. 83807 between the
●
modules (5) and the SPS.
Connect the ASI output cable to the corresponding
●
inputs (1) with 75 Ω coaxial cables.
Connect the power source to the mains.
●
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WORKING TEMPERATURE
The modules have to be refreshed for their correct
●
operationt. It's recommended to install the modules in
the housing with fan (Ref 83806) or, when installing on
a 19" rack, to use the Rack ventilation Unit (ref 83801)
When there are few modules to install, it's possible to
use the fan VNT 800 on the wall frame (fig N 1).
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MODULES PROGRAMMATION
The modules can be programmed:
Through the UCF 300 Control Unit (Ref 85115) in local
●
mode, following the steps explained in this manual.
Through a PC in local mode. In this case, it's necessary
●
to have a MCU 8000 unit and the "8000 series" interface
installed in the PC.
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UCF 300: BUTTONS' FUNCTIONS
❏
❏
The buttons
are for vertical menu scrolling.
▲
▼
●
a) On the programming menu they are for selecting the
function to be programmed.
b) A parameter can be selected within a function.
c) A parameter setting can be modified within a
programmable parameter.
The
buttons are for horizontal scrolling through the
●
programming menu, e.g.:
Function
parameter
The
button is for moving right.
●
The
button is for exiting without changing the setting:
●
escape.
●
■
●
■
1. RF OUTPUT: RF output
2. DVB-T OUTPUT: DVB-T output
value.
12
The
button is for validating the data item programmed.
OK
DISPLAY INDICATIONS
The UCF 300 control unit has two rows of alphanumerical
characters. The data display mode and programming
diagram on page xx are a guide to this process:
If the characters are all upper case and on the upper
●
row, this indicates that one of the 5 functions has been
entered.
If data appear on two rows of the display, the
●
parameter to be adjusted is being displayed.
The right arrow shows how to enter to change the
●
parameter setting.
A flashing box indicates that the parameter setting can
●
❏
be modified using the
▲
(press the
button to validate).
OK
A "+" sign followed by the name of the service indicates
●
that this service is in the output multiplex.
A " * " sign before the name indicates an encrypted
●
service.
PROGRAMMING with UCF 300
Connect the UCF 300 to the desired module. After a
●
few seconds, the unit will show the model in question.
Press the
button to enter the standard menu
●
(access to extended menu pressing
1. RF OUTPUT
2. DVB-T OUTPUT (extended menu)
3. OUTPUT SERVICES (extended menu)
4. PSI EDIT (extended menu)
5. MEMORY
❏
❏
Press the
button to scroll through the functions.
▲
▼
●
Press the
button to enter the parameters of the
●
desired function.
See programming diagram on page 10 and 11.
1.1. Out Frequency (MHz)::
1.2. Out Level (dBμV):
65 ÷ 80 dBμV
1.3. Out RF:
Enables/disables the RF output.
2.1. DVB T Mode:
2K, 8K.
2.2. QAM Mode:
QPSK, 16 QAM, 64 QAM.
2.3. Code Rate:
FEC 1/2, 2/3, 3/4, 5/6, 7/8.
2.4. Guard Interval:
1/4, 1/8, 1/16, 1/32.
2.5. Bandwidth:
6, 7, 8 MHz.
2.6. IQ mode:
normal, Inverted.
❏
▼
during 3 sec)
OK
50,5 ÷ 858 MHz.
.
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