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TFS43A Preliminary Specification
型号:   TFS43A
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描述:   Preliminary Specification
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品牌   VECTRON [ Vectron International, Inc ]
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TFS43A.doc
version 1.4
05.12.03
VI
TELEFILTER
Description
IF filter for digital cable TV
Preliminary Specification
TFS 43 A
1/5
Measurement condition
Ambient temperature T
A
:
Input power level:
Terminating impedance:
25 C
0 dBm
source: 50
load:
2 k
II 3 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 43A is the insertion loss. The insertion loss ae is defined as the insertion loss at the nominal
frequency fN . The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at the 3 dB filter attenuation level relative to the
insertion loss ae.
Data
Insertion loss
(Reference Level)
Nominal frequency
Centre frequency
Bandwidth
fN
fc
at ambient temperature T
A
typ. Value
15,2
dB
Limit
14,8 dB
±
1,5 dB
-
-
6,0
7,6
35
MHz
MHz
ns
43,75 MHz
43,75 MHz
±
0,07 MHz
-
-
-
3 dB
30 dB
Group delay ripple
Relative attenuation
p-p in
fc
±
3 MHz
arel
f
N
f
N
f
N
f
N
f
N
f
N
-
-
+
+
+
+
8,75
4,75
4,00
4,25
5,00
6,25
MHz
MHz
MHz
MHz
MHz
MHz
...
...
...
...
...
...
@
@
@
@
@
@
f
N
-
f
N
-
f
N
+
f
N
+
f
N
+
f
N
+
41,22
46,28
40,75
46,75
39,75
47,75
4,75
4,00
4,25
5,00
6,25
11,25
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
0,4
0,15
3,0
3,0
44
41,5
46
48
38
36,5
46
44
58
52
-
-
-72
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
0,2
2,7
2,7
min.
min.
min.
min.
min.
min.
min.
min.
min.
min.
±
±
±
-
1
1,2
1,2
38
37
42
37
36
34
36
42
42
50
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Reflected wave signal suppression
1,2
µs...6,0 µs
after main pulse
Feedthrough signal suppression
Operable temperature range
Storage temperature range
Temperature coefficient of frequency
TC
f
*
DC voltage
AC voltage
*)
-25
°C
..... 65
°C
-40
°C
..... 85
°C
ppm / K
max.
max.
-
12
10
V
V
V
DC
V
pp
fc(Hz) = Tc
f
(ppm/K) x (T - T
A
) x f
CAT
(MHz)
generated:
checked / approved:
TELEFILTER GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is assumed
as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
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