Home / Optical modules TP4 and TP3
• Physical interface points TP1, TP2, TP3 & TP4 are identified for future reference and further defined below. The above block diagram shows relevant elements and interfaces for a link between two PMAs. This document describes the evaluation criteria and test procedures for optical data links that are developed to read out the detector front-end electronics in ATLAS and CMS for the LHC upgrade, the Super LHC or SLHC. These two SerDes's need to communicate with each other and the TP1 and TP4 demarcation points are defined to enable this.
802.3ck Chip-to-Module TP1a/TP4 Compliance Test Measurement Methodology Mike Li, Masashi Shimanouchi, Hsinho Wu, Intel Jane Lim, Cisco Richard Mellitz, Samtec Phil Sun, Credo Mike
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Eye diagrams at TP1, TP2, TP3 and TP4 and the eye mask tests at TP1, TP2 and TP3.
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The TP2/TP3 test fixture (also known in the industry as Host Compliance Board) is required for measuring the transmitter specifications at TP2 and the receiver return loss at TP3. The cable
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TP2 and TP3 Parameter Measurement Test Readiness Jonathan King, Sudeep Bhoja, Jeff Rahn, Brian Taylor 10th Oct 2005
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"It is expected that in many implementations TP1 and TP4 will be common between 1000BASE-SX (Clause 38), 1000BASE-LX (Clause 38), and 1000BASE-CX"
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Crosstalk optical source is active and applied at TP3 that passes to TP4 during TDECQ mission mode testing. Optical Module TP1 TP2 PRBS31Q
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Two physical interfaces, TP1 on the left and TP4 on the right, are shown between the PMD and PMA elements. Here the PMA may be a host ASIC and the PMD may be a fiber optics module. P802.3ba
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Record OMA at TP3 Max TDP = OMA – Ref Rx S. Now that the sensitivity, S, of the Ref Rx has been established, the Ref Tx and reference channel is replaced by the worst case Tx operating with the
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TP3 is the optical input of the Rx part of the module. TP4 is the differential electrical output of the Rx part of the module. In practice, one does not need two modules to evaluate the Rx part. One can simply
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802.3cy–TP1-TP4 Link Segment TP1 toTP4 Test points for all link segment measurements. The link segment test fixture, or its equivalent, is required for measuring the link segment specifications in
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• It helps us to understand the behavior of a receiver with different optical power levels, but it is not the main setup to evaluate the performance of
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More than one set of module TX FIR settings may be needed to support different host traces. For example, two sets of TX FIR optimized for short and long reference channels respectively.
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TP3 is at the input to the PIN diode, usually tested at the end of the fiber with the full length in the application. Both TP2 and TP3 are optical signals of the serial bit stream. TP4 is the electrical signal
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TP1, TP2, TP3, TP4 in Clause 38 (Gigabit Ethernet) is well known TP1, electrical: host output, module input TP2, module optical output Actually, 2 m after the MDI TP3: module optical input TP4,
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The module output electrical specifications at TP4 shall be met with any optical input signal that is compliant to this optical specification for stressed input sensitivity (section 9.10, 100G
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The module output electrical specifications at TP4 shall be met with any optical input signal that is compliant to this optical specification for stressed input sensitivity (section 9.10) and input sensitivity
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Link Diagnostics in LPO Applications Abstract: Network equipment comprised of Linear Pluggable Optics (LPO) modules and host ASICs provides a full suite of capabilities for link monitoring and
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Including sensitivity, eye diagrams and similar with nonlinear electrical-optical converters (PMDs, optical modules) Microwave style de-embedding is not feasible
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• TP1 is the differential electrical input of the Tx part of the module. • TP2 is the optical output of the Tx part of the module. • TP3 is the optical input of
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The direct attach concept requires definition of TP1 and TP4 in the IEEE as there may not be a TP2 or TP3 present in the link! A combined optical and copper cable AdHoc is desirable to avoid creating
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TP1, TP2, TP3 and TP4 are traditional labels for interfaces of a fiber optic link. Here the PMAs may be host ICs and the PMDs, fiber optic modules. P802.3ba should fully specify the signals at TP2 and
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OIF defines the TP1 and TP4 interface, IEEE defines the optical TP2 and TP3 interface standards. TP2 and TP3 are currently defined for DSP based solutions and not optimized for linear transmission.
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TP3 is at the inp ut to the PIN diode, usually tested at the end of the fiber with the full length in the application. Both TP2 and TP3 are optical signals of the serial bit stream. TP4 is the electrical signal
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Module output measurements TP4 measured directly TP5 measured with addition of addition of CR (C0, C1) caps + ~244 mm trace Module TX FIR is set for a nominal setting such that both TP4 and TP5
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Cable Assembly Characteristics TP1/TP4 The twinaxial copper cable assembly consists of shielded signal pairs utilized for differential signaling at 25 Gb/s per differential signal pair.
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Connect TP2 and TP3 of the optical module with a short optical fiber. The tested signal at TP4 is transmitted to the oscilloscope and the reference CRU with a microwave pike-off.
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TP1 TP2 TP3 TP4 TP1 Optical Module TP2 MDI Fiber Cable Plant MDI Optical Module TP3 4 lane PMD Service Interface PMA (4:4) FEC (Optional)
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Background 1/2 TP1, TP2, TP3, TP4 in Clause 38 (Gigabit Ethernet) is well known TP1, electrical: host output, module input TP2, module optical output Actually, 2 m after the MDI TP3: module optical
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For cases, as shown above in Figure 1, where retimers are embedded in the optical module, the PMD service interface is not exposed. TP1 and TP4 remain as points on the PMD service interface and,
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