Tektronix 80A00, Technical Reference

Page: 259 / 277

Optical Sampling Modules
Table 11: Aberrations (cont.)
Optical sampling module Bandwidth/ fi lter setting Aberrations
65 GHz <10%
100GBase-xR4 FEC <5%
80C25GBE
100GBase-xR4 <5%
22 GHz <9%
100GBase-R4 <12%
OTU4 <13.5%
80C15
32 GHz <17%
Clock Recovery Optical Sensitivity Range and Recovered Clock Timing Jitter
This procedure checks the clock recovery optical sensitivity range and the
recovered clock timing jitter on 80C0X optical sampling modules that are
equipped with clock recovery options.
Equipment required
(See Table 1.)
Attenuator, 2X (6 dB pad), 50 Ω , SMA (item 7)
Cable, coaxial, 2 ns delay SMA, male connector each end (item
12)
Single-mode
fi ber-optic cable, 2 m, FC to FC connectors (item 13)
Optical Transmitter and Receiver (item 20)
Variable optical attenuator, Tektronix OA5002 (item 21)
Tektronix 80C02 Sampling Module (item 32)
Pattern Generator, Advantest D3186 (item 38)
80C0X Optical sampling module that supports clock recovery
Prerequisites (See page 16, Prerequisites .)
(See page 219, Prerequisites .)
Before performing this procedure, be sure you have completed the Dark level &
Vertical Equivalent Optical Noise procedure. (See page 219, Dark Level and
Vertical Equivalent Optical Noise .)
Setup Install the test setup as shown in the following fi gure and preset the main
instrument controls:
1. Install the 80C0X Optical Sampling Module into Channel 1 of the instrument.
2. Install the 80E02 Sampling Module into Channels 3 and 4 of the instrument.
(Channel 1 and Channel 2 are disabled when an optical sampling module
is installed in the upper Channel 1.)
3. Install 2X SMA electrical attenuators on the inputs of the 80E02 Sampling
Module (to prevent saturation).
DSA8300 Performance Veri fi cation 241