ISDN S-INTERFACE MODULES
Surface Mount, Dual, 1500 Vrms
Common Mode Choke Performance (continued)
Typical Common Mode
Attenuation for the
low-frequency Common
Mode Choke (4.7 mH) based
on a 50 Ω system.
-100
-70
-80
-90
-60
-50
-40
-30
-20
-10
-0
30 kHz 100 kHz 1 MHz
10 MHz
COMMON MODE
ATTENUATION (dB)
HP-4195A
CH1
CH2
50:100
BALUN
100:50
BALUN
XFMR
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