6.1.9. The coordinated connection of a remote voltage source through a pair of long
line with a wave resistance Zw with matching on the signal source side
R
BH
– internal (output) impedance of the signal source.
R – balancing resistor on the signal source side.
The cable must be paired (shielded twisted pairs) with wave resistance of wire pairs Zw.
Below is a practical case where a broadband operational amplifier acts as a remote voltage source (providing
a low-impedance voltage output in the frequency band up to 10 MHz).
Y1 (Y2-Y16)
E-502
AGND
X1 (Y2 -Y16)
R=Z
в
R
ВН
=Z
в
/2
R=Z
в
/2
Источник
напряжения
Y1 (Y2-Y16)
E-502
AGND
X1 (Y2 -Y16)
R=Z
в
R
1
=Z
в
/2
R
2
=Z
в
/2
Источник
напряжения
Вход
Voltage
source
Input
Voltage
source
