tfs125B.doc
Version 1.0
06.03.01
VI
TELEFILTER
Filter Specification
TFS 125 B
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedances:
23
0
50
°C
dBm
Ω
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 125 B is the minimum attenuation in the pass band. The minimum attenuation in the pass
band is defined as the insertion loss ae. The nominal frequency fN is fixed at 125 MHz without tolerance or limit. The values of relative attenuation
arel are guaranteed in the whole operating temperature range. The frequency shift of the filter in the operating temperature range is included in the
production tolerance scheme.
Data
typ. value
tolerance / limit
______________________________________________________________________________________________________
Insertion loss
-
1,5...... 3,5 dB
ae
(Reference level)
______________________________________________________________________________________________________
Nominal frequency
-
125,0 MHz
fN
______________________________________________________________________________________________________
1 dB bandwidth
-
min. 300,0 kHz
BW
______________________________________________________________________________________________________
Relative attenuation
arel
f
N
..... f
N
± 150 KHz
-
max.
1,0 dB
MHz
-
min. 12,0 dB
f
N
–124,0 MHz ... f
N
- 28
MHz
-
min.
5,0 dB
f
N
– 28,0 MHz ... f
N
- 14
-
min. 30,0 dB
f
N
+ 13,5 MHz ... f
N
+14,5 MHz
-
min. 15,0 dB
f
N
+ 14,5 MHz ... f
N
+28,0 MHz
MHz ... f
N
+325,0 MHz
-
min. 38,0 dB
f
N
+ 28
______________________________________________________________________________________________________
VSWR
within ± 150 KHz
-
max
2,0 : 1
______________________________________________________________________________________________________
Absolute group delay
GD
-
max. 300,0 ns
Group delay ripple
GDD *)
within ± 150 KHz
-
max. 30,0 ns
______________________________________________________________________________________________________
Intermodulation
**) IP
3
54
dB
min. 45,0 dB
______________________________________________________________________________________________________
Input power level
max. 10,0 dBm
______________________________________________________________________________________________________
Temperature coefficient of frequency
- 71,6
ppm/K
TCf ***)
Operating temperature range
- 10 °C ... + 85 °C
______________________________________________________________________________________________________
*)
measured with smoothing; smoothing aperture
≤
50 kHz
**)
modulation signals: f
N
and f
N
+ 14 MHz, each of 10 dBm; measured signal:
***)
∆f(Hz)
= TCf(ppm/K) x (∆T) x fTo(MHz)
f
N
- 14 MHz
generated:
checked / approved:
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail: tft@telefilter.com
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: vti@vtinh.com
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.
VECTRON [ Vectron International, Inc ]
