Testing Conditions：According to applicant’s specifications.

(1)  Characteristic impedance :

: Use 50ohm termination

: Measurement area ; Two areas (Connector area , Cable ares)

: Measurement point ; Two point (maximum value and minimum value)

 in a pair.

: Input signal ; Rise time 100ps (10~90%)(through the 3inches test pattern)

: Measurement axis ; horizontal, 200ps/div(connector) 2ns/div(cable at 1m 

 length)vertical, 100mρ/div

(2)  Reverse cross-talk :

: Use 50ohm termination (rive pair ,Victim pair)

: Measurement point ; 4 pairs/total crosstalk

: Input signal ; Rise time 100ps(10~90%)(through the 3inches test pattern)

: Measurement axis ; horizontal 500ps/div  vertical 10mV/div

(3)  Propagation delay and skew

: Measurement signal ; Through signal.(Not reflection signal)

: Measurement ; Within pair skew and between pairs skew.

: Measurement axis ; horizonal, 2ns/div(Prop delay) 500ps/div(within pairs

 skew)   vertical 100mV/div

(4)  Eye pattern

: Input signal : 1Vpp(div). PRBS 2^23-1. 2.5Gbps

: Waveform ; ([signal+]-[signal-]) The waveform does not overflow the

 screen.

: Measurement point(Eye eight); Center in the eye width

Measurement axis ; horizontal, 50ps/div vertical 200mV/div

(5)  Insertion loss

: Method ; Use 6inches test pattern for calibration line

                      :The value ; Calculated by measurement line and calibration line.

                      : Measurement axis ; horizontal ; 100MHz~6000MHz