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Programmable head-end amplifier
Refs. 532940, 532970
Inputs
Band
Gain
Filters configuration
No. channels per filter
Slope adjustment
Optimum input margin
Gain regulation
Manual reg. gain
Output level ***
Output level regulation
Noise figure
TEST Output
Rejection
Input powering
(automatic)
I. max.
Mains voltage/frequency
Maximum current
Max. power consumption
Max. working temperature
Weight
Dimensions
Protection index
*
Automatic adjustment (Depending on the wished level of exit and the signal of entrance).
**
Programmable adjustment.
***
The output level depends on the nº of channels.
Troubleshooting
Channels are not adjusted to the programmed output level: Check that the
programmed filter for the highest output channel has both presence of signal
and the right level, since this value is taken as a reference for the adjustment of
the selected output level.
The channels entering through the input of BIII are regulated incorrectly:
If we are entering only one channel through this input, its level would be set
5dB below the UHF level channels. But if, with the same level, we introduce
several channels, the Avant will treat them like a higher-level single channel,
thus reducing the level adjusted of all of them regarding to the one it would be
obtained for just one channel.
If we need to amplify several channels coming from other processing units, we
recommend entering them on the input "Broadband (47-862 MHz)".
Channels in the broadband input are not equalised as regards filter:
The "broadband" input amplifies signals coming from satellite receivers, the
recommended level for this input is between 70 and 74 dBµV (for UHF channels)
(1) 532970
(2) 532970 => BI/FM
UHF1
UHF2
UHF3
MHz
470 - 790
dB
Auto (max. 55 ±
3).
10
0
0
9
0
1
No.
7
2
1
6
3
1
5
3
2
Nº
0 - 5 **
dB
0 - 9 **
dBμV
60 - 105
dB
0 - 20 *
dB
± 9 (per filter)
dBμV
124
dBμV
100-115
dB
9
dB
dB
20 (±16 MHz)
24
V=
mA
60
V~/Hz
mA
W
ºC
gr.
mm
FM => (532940)
BIII/DAB
BI/FM => (532970)
87 - 110 => (532940)
174 - 260
47 - 110 => (532970)
Auto
Auto
(max. 45 ± 3)
(max. 46 ± 3)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
60 - 85
62 - 87
0 - 25-OFF*
0 - 25-OFF*
± 9
± 9
124
124
90-105
95-110
10
10
-20
20 (±16 MHz)
20 (±16 MHz)
-
24
(1)
-
60
(1)
196 - 264 / 50-60
150
16
45
2,800
320 x 258 x 60
IP 20
to get these channels equalised with the rest of the adjusted channels. If the
level applied is below the indicated range, these channels will have a lower level
than the rest; on the other hand, if the level is higher there will be disturbances
due to the intermodulation of channels.
A high/low level detected in an input or a filter: The adjustment process
begins with the verification of the signal levels introduced in the FM
and finally with the verification of the programmed filters. The indication that
the FM
or BIII level is low when we do not apply the signal in these inputs will
(2)
not affect the rest of the selected channels.
We must remember that the level indications in the FM
shown on the programmer's display are a reference for the adjustment process,
being the unit able to balance channels, where a level error has been found,
whenever input levels do not present large variations as regards the maximum
specified range.
47-862 MHz
47 - 370
370 - 862
Auto
Auto
(max. 40 ± 2)
(max. 43 ± 2)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
69 - 73
70-74
-
-
-
-
124
124
95-110
100-115
-
-
-
-
-
-
, BIII input
(2)
, BIII inputs and filters
(2)
16
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