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3. OUTPUT SERVICES
3.1. Pass-Through: Transparent mode or with
selection / services edition (select with
press
).
OK
3.2. List of Services:
list of services.
Press
to view the list.
●
❏
❏
Press
to select the service.
▲
▼
●
Press
to enter the service parameters.
●
– 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.
3.2.1. Active:
enables the service on output MUX
❏
❏
(use
to select and press
▲
▼
3.2.2. LCN:
Allows assigning a LCN (Logical Channel
Number) between 1 and 1023 to the services at the
❏
❏
output (select with
▲
▼
stands for NO LCN).
3.2.3. Program Number:
indicates the service PN.
3.3. Output MUX BW:
indicates the total % of the output
MUX occupied.
- It is not recommendable to work with the output MUX BW
above 80%, as the services may increase their bitrate during
transmission. (Output MUX BW > 92%: Status LED in yellow).
3.4. Clear all:
clears all the services selected in the DVB-T
output. (Press
).
OK
3.5. Read Services:
It reads the ASI input services
(Press
).
OK
4. PSI EDIT:
Allows the Output's NIT configuration.
4.1. NIT Mode:
Pass-Through / LOCAL selection. If local is
chosen, allows modifying the following parameters.
4.2. Network Name:
Allows living a name to the network.
4.3. Network ID:
Network identificator: 0 ÷ 65535 (give the
same value as the Orig.Net.ID).
4.4. TS ID:
Some receivers need a different TS ID for every
memorised module (value between 0 and 65535).
4.5. Orig. Net. ID:
Original Network Identifier by Country
(see table 3).
5. MEMORY
- Automatic save: 30 minutes after the last button is
pressed, the current data will be stored in the DMT 8000.
5.1. Save Configuration:
Stores current programming.
5.2. Restore Configuration:
stored in the unit to be recovered.
5.3. Save Configuration, Device to UCF 300:
enables the configuration stored to be saved with an
identifying name in one of the 26 memories of the
UCF 300.
5.4. Load Configuration, UCF 300 to Device:
recovers the data in one of the UCF 300's memories
with data recorded from an DMT for cloning on another
DMT 8000.
❏
❏
and
▲
▼
).
OK
and press
; "0000"
OK
Enables the configuration
■
RF LEVEL ADJUSTMENT
1.
Remove the coaxial bridge from the RF channel
output (8) of module 1 beside the power source.
2.
Adjust the output level to 75 dBμV via UCF 300
(see point 2 Programming).
3.
Connect the 75 Ω axial bridge again.
4.
Taking the measurement at the SHA or SAC amplifier
output, adjust the levels of the other modules so that
they are equalised to the level of module 1,
which has already been adjusted.
5.
Adjust the amplifier gain, taking into account its
maximum output level and the reduction according
to the number of the channels in the installation,
as shown in Table 1.
Tab. 1
Number of
2 4
channels COFDM
Reduction of the
maximum output
3 6
level (dB)
■
LED FUNCTIONS
Status LED:
●
Green color: Tuner tuned
●
Yellow color: Signal problems
●
– Program not found.
– Exceeded output BW > 92%.
– Out RF: OFF.
Red color: Unit failure
●
Communication LED: Yelow: waiting for data.
●
■
FAQs:
How many programs fit on an RF, COFDM, UHF,
●
8 MHz channel?
The channel's output capacity is measured in MBs and
there is a direct relationship between the following:
Modulation: QPSK < 16 QAM < 64 QAM
●
Code Rate FEC:1/2 < 2/3 < 3/4 < 5/6 < 7/8
●
Save interval IG: 1/4 < 1/8 < 1/16 < 1/32
●
(maximum capacity shown in bold).
DVB-T (8MHz)
Modulation Code Rate T u = 1/4
1/2
4,98
2/3
6,64
QPSK
3/4
7,46
5/6
8,29
7/8
8,71
1/2
9,95
2/3
13,27
16 QAM
3/4
14,93
5/6
16,59
7/8
17,42
1/2
14,93
2/3
19,91
64 QAM
3/4
22,39
5/6
24,88
7/8
26,13
The number of programs depends on the amount
●
of information contained in each one.
13
5
6
8 16 24 32 64
7
8
9 12 16 15 18
Bitrate (Mbps)
T u = 1/8
T u = 1/16 T u = 1/32
5,53
5,85
6,03
7,37
7,81
8,04
8,29
8,78
9,05
9,22
9,76
10,05
9,68
10,25
10,56
11,06
11,71
12,06
14,75
15,61
16,09
16,59
17,56
18,10
18,43
19,52
20,11
19,35
20,49
21,11
16,59
17,56
18,10
22,12
23,42
24,13
24,88
26,35
27,14
27,65
29,27
30,16
31,67
29,03
30,74
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