(1) Analog circuit
r: Signal Source Impedance
Rin: Input Adjustment Resistance
Zo: Characteristic Impedance
r+Rin=Z=R
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(2) ECL (-2V termination line used)
Connect to one of the VC C , VE E or -2V lines
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(3) ECL (-2V termination line not
used)(PECL)
Connect to either VC C or VE E lines
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(4) LVPECL