User manual

3. Signal Adjustment
3.a. Signal Adjustment
The following chart indicates the default settings for the signal equalization.
SEL_2[A:D] SEL_1[A:D] SEL_0[A:D] @1.25GHZ @2.5GHZ
0 0 0 0.5dB 1.2dB
0 0 1 0.6dB 1.5dB
0 1 0 1.0dB 2.6dB
0 1 1 1.9dB 4.3dB
1 0 0 2.8dB 5.8dB
1 0 1 3.6dB 7.1dB
1 1 0 5.0dB 9.0dB
1 1 1 7.7dB 12.3dB
Cable
Default
Edge
Default
Table 1: Equalizer Selection (refer to call-out on photo)
The following chart indicates the default settings of the 2-position dip switches for output swing control.
The following chart indicates the default setting for de-emphasis adjustment
S_1[A:D] S_0[A:D] Swing (Diff. VPP)
0 0 1V
0 1 05V
1 0 0.7V
1 1 0.9V
D2_[A:D] D1_[A:D] D0_[A;D] De-emphasis
0 0 0 0dB
0 0 1 -2.5dB
0 1 0 -3.5dB
0 1 1 -4.5dB
1 0 0 -5.5dB
1 0 1 -6.5dB
1 1 0 -7.5dB
1 1 1 -8.5dB
Table 2: Output Swing Control (refer to call-out on photo)
SW=OFF
Default
SW=ON
Default
Edge
Default
Cable
Default
Table 3: De-emphasis Adjustment (refer to call-out on photo)
One Stop Systems OSS-PCIe-HIB25-x16-H/T
Rev. A Page 7