Specifications: typical @ 25 C ± 5 C
O
O
+15
vdc
300
mA
catv/a
nt
bi-d
irec
tiona
l 1x6
co
ax p
ane
l for cab
le o
r ante
nna
syste
ms
DA-506BID
sho
rt
long
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The DA-506BID video amplifier hub
distributes CATV
or antenna signals to 6 TVs. The
has four short
run outputs (up to 75 feet) and two long run outputs (up to 150
feet) for maximum flexibility.
The
has a
broadband 54-806MHz amplifier and a 5-42MHz reverse
channel which is compatible with pay-per-view, interactive
cable and cable modems.
DA-506BID
DA-506BID
CATV/Ant input to TV output
4
TV output to CATV/Ant input
-8dB
-12dB
(5-42MHZ reverse channel)
Bandwidth
Max CATV/Antenna input (64 channels)
20dBmV
Power supply (370-086 included)
Long
Short
Output run distance:
150 feet
75 feet
Gain:
dB
1dB
Forward
54-806MHz
Reverse
5-42MHz
15 VDC @ 300mA
+15
vdc
300
mA
catv
/an
t
bi-d
irec
tion
al 1x
6 c
oax
pa
nel fo
r ca
ble
or a
nte
nna
sys
tem
s
DA-506BID
sho
rt
long
TM
TM
Herringbone patterns on several channels.
A wavy pattern on the TV picture is caused by one or more spurious
signals in the 6MHz reserved for that TV channel. These spurious
signals, or ‘spurs’ can come from several places. For example, a
modulator at channel 16 will interject a spur into channel 15.
But the prime cause of spurs is an over-driven distribution amplifier.
(This is also known as IM or InterModulation distortion.)
To determine if an amplifier is causing this distortion, an inexpensive
variable attenuator will allow you to perform this simple test:
Insert the variable attenuator before the amp. (If you have splitters
between the amp and TV, that’s OK.) By
the attenuation,
you are
the signal that reaches the amp. If you find that
the herringbone patterns disappear, then your problem is an over-
driven amplifier.
Causes of an over-driven amp:
1) Too much gain in the system. Use the variable attenuator to find a
setting where the signals are not noisy, and the amp is not being
over-driven.
2) Strong local FM signal. If you have a nearby FM transmitting
tower, you may need to install an FM trap before the amplifier.
3) Strong local TV signal.
increasing
decreasing
If you have a nearby TV transmitting tower,
you may need a tuned filter to reduce this station’s signal. Often the
station management can supply filters for their neighbors.
Variable attenuators and FM traps are available at many hardware
stores and most electronic stores.
For more troubleshooting tips and installation advice,
visit us on the web at www.channelplus.com.
Troubleshooting Tips
