{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:QAF2LGX6V6WC6XSHADNLSUKLCB","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"d6dad0777000c35ace1bfbd2c43b6d9a4dd555d4f662b02b038497fc54435368","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-03-01T10:41:12Z","title_canon_sha256":"64971f022997733c0e5c061202b4190b0a81dfe97dc4981e241b76a829833947"},"schema_version":"1.0","source":{"id":"1103.0128","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.0128","created_at":"2026-05-18T04:08:45Z"},{"alias_kind":"arxiv_version","alias_value":"1103.0128v1","created_at":"2026-05-18T04:08:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.0128","created_at":"2026-05-18T04:08:45Z"},{"alias_kind":"pith_short_12","alias_value":"QAF2LGX6V6WC","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"QAF2LGX6V6WC6XSH","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"QAF2LGX6","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:201422193af81e890135d1ddf5f68bb910829a26bbf6aedc75b07e99dbe90be7","target":"graph","created_at":"2026-05-18T04:08:45Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present test results and characterization of a data transmission system based on a last generation FPGA and a commercial QSFP+ (Quad Small Form Pluggable +) module. QSFP+ standard defines a hot-pluggable transceiver available in copper or optical cable assemblies for an aggregated bandwidth of up to 40 Gbps. We implemented a complete testbench based on a commercial development card mounting an Altera Stratix IV FPGA with 24 serial transceivers at 8.5 Gbps, together with a custom mezzanine hosting three QSFP+ modules. We present test results and signal integrity measurements up to an aggrega","authors_text":"A. Biagioni, A. Lonardo, A. Salamon, D. Rossetti, F. Lo Cicero, F. Simula, G. Chiodi, G. Salina, L. Tosoratto, O. Frezza, P. S. Paolucci, P. Vicini, R. Ammendola, R.Lunadei","cross_cats":["physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-03-01T10:41:12Z","title":"High-speed data transfer with FPGAs and QSFP+ modules"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.0128","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:1910232bca12eb7e8f2c451d8f1b1b4d6e61ff29d1b44138bc69e04108832c49","target":"record","created_at":"2026-05-18T04:08:45Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"d6dad0777000c35ace1bfbd2c43b6d9a4dd555d4f662b02b038497fc54435368","cross_cats_sorted":["physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.ins-det","submitted_at":"2011-03-01T10:41:12Z","title_canon_sha256":"64971f022997733c0e5c061202b4190b0a81dfe97dc4981e241b76a829833947"},"schema_version":"1.0","source":{"id":"1103.0128","kind":"arxiv","version":1}},"canonical_sha256":"800ba59afeafac2f5e4700dab9514b1068dbf0b2fbba6b39f1df5cd30935701c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"800ba59afeafac2f5e4700dab9514b1068dbf0b2fbba6b39f1df5cd30935701c","first_computed_at":"2026-05-18T04:08:45.237325Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:08:45.237325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DethB7GBCLb27zj/2rY0YnIVJwkagDORjjLmK7FPE4sWsw/OA3oztSYJ/vNBw6wgNi5MDw4ZiAY4P2mxrWnPDw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:08:45.237799Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.0128","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1910232bca12eb7e8f2c451d8f1b1b4d6e61ff29d1b44138bc69e04108832c49","sha256:201422193af81e890135d1ddf5f68bb910829a26bbf6aedc75b07e99dbe90be7"],"state_sha256":"f41e888d4d6782b63da4ffde619ffcc52aac3e2671e3da5acabcd5f7f134315d"}