E313 · Contact designations

LEMO 4A 75-ohm broadcast triax connector engineering reference

LEMO product example: one 75-ohm triax contact system, push-pull locking and circular keying in the cited 4A product family.

Open field note Source trail

Source checked · no independent review claimed · Fabrication approved: no

LEMO 4A 75-ohm triax engineering boundary original orientation schematic — Original V51 triax boundary schematic; not to scale and not a conductor wiring, mating-gauge or manufacturing drawing.

Contact count

1

product-specific male straight plug with one triax contact system

Mating boundary

Shape is not the verdict.

LEMO 4A example ↔ matching 4A receptacle identified for the same product system; exact series/keying/cable documentation remains controlling

Orientation

How to read this profile

V51 records the cited product as a male straight plug with push-pull/circular-keying context. It does not infer a camera, CCU or instrumentation conductor assignment.

Bounded dimensions

Only what the sources support

Source-scoped dimensions; not fabrication clearances
Field	Value	Scope	Evidence
Cited product length reference	91 mm	example component	[C313B]

Source-scoped identification facts

Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.

Documented examples; not a mating drawing or compatibility approval
Nominal contacts	1S354Source-backed nominal position/contact count for identification: 1. Not a pinout or manufacturing drawing.
Dimensions / axis	91 mm Cited product length reference (Recorded example component)S361Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. example_component; product-specific male straight plug with one triax contact system
Connector role	plug; plug (FXB.4A.675.CTCC97)S354 · S361 · S354Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. product-specific male straight plug with one triax contact system FXB.4A.675.CTCC97. Documented role: plug. Circular,male/female is manufacturer keying vocabulary,not proof of an angular polarization key.; Existingdimensiontableletters retain their old scope; no unviewed B/L/S1orA/M/Laxes relabelled.
Coupling / latch	push-pull (Claim C313B); Push-pull (FXB.4A.675.CTCC97)S361 · S354Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. Product-specific mating/keying/mechanical context only; no camera-system conductor roles, cable approval or fabrication permission is inferred. FXB.4A.675.CTCC97. Documented role: plug. Circular,male/female is manufacturer keying vocabulary,not proof of an angular polarization key.; Existingdimensiontableletters retain their old scope; no unviewed B/L/S1orA/M/Laxes relabelled.
Manufacturer	LEMO (FXB.4A.675.CTCC97)S354Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. FXB.4A.675.CTCC97. Documented role: plug. Circular,male/female is manufacturer keying vocabulary,not proof of an angular polarization key.; Existingdimensiontableletters retain their old scope; no unviewed B/L/S1orA/M/Laxes relabelled.
Series	4A (FXB.4A.675.CTCC97)S354Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. FXB.4A.675.CTCC97. Documented role: plug. Circular,male/female is manufacturer keying vocabulary,not proof of an angular polarization key.; Existingdimensiontableletters retain their old scope; no unviewed B/L/S1orA/M/Laxes relabelled.
Exact part / implementation	FXB.4A.675.CTCC97 (FXB.4A.675.CTCC97)S354Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. FXB.4A.675.CTCC97. Documented role: plug. Circular,male/female is manufacturer keying vocabulary,not proof of an angular polarization key.; Existingdimensiontableletters retain their old scope; no unviewed B/L/S1orA/M/Laxes relabelled.

Not recorded: Positions / cavity span, Populated contacts, Contact rows, Contact pitch, Contact gender / arrangement, Mounting, Keying / polarization, Shell / form, Recorded markings, View convention. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits

Triax family and nominal impedance do not establish camera/CCU or instrumentation standard, cable construction, conductor roles, signal direction or complete system compatibility.
Product-specific dimensions and mating examples do not constitute a fabrication drawing, universal interchangeability result or cable-assembly approval.

Report a correction to these facts →

Contact designations

Contact reference

Source-scoped contact assignments; read the orientation and evidence before using numbers
Contact	Documented role / designation	Evidence
Triax	Single 75-ohm triax contact system in the cited manufacturer example; inner/outer conductor roles are not normalized here.	[C313B]

Unknowns stay unknown.

Triax family and nominal impedance do not establish camera/CCU or instrumentation standard, cable construction, conductor roles, signal direction or complete system compatibility.
Product-specific dimensions and mating examples do not constitute a fabrication drawing, universal interchangeability result or cable-assembly approval.

Your next step

Use the detail without guessing past its limits.

Read the connector field note Recognition clues and practical checks.Work through a connection Keep exact equipment and cable requirements separate.

Source trail

Claims and sources

C313Asource checked

LEMO identifies the cited product as one triax contact system with 75-ohm impedance.

LEMO · LEMO LEMO 4A 75-ohm broadcast triax connector product reference ↗
Electrical configuration: number of triax contacts and impedance · Source-backed identification does not establish universal wiring, protocol generation, device compatibility, safe installation or fabrication approval.

Back to first citation ↑

C313Bsource checked

LEMO’s cited 4A example is a straight male push-pull plug with one 75-ohm triax contact system and an overall length dimension of 91 mm.

LEMO · LEMO FXB.4A.675.CTCC97 4A 75-ohm broadcast triax product reference ↗
Product characteristics: 1 triax, 75 ohm, straight male plug, push-pull, circular keying and dimensions · Example product characteristics do not establish camera/CCU standard, cable construction, conductor roles or universal system compatibility.

2 source records support this profile. No independent engineering review or hardware validation is claimed.

Discovery Quality III

Questions this record helps answer

All focused explainers →

Broadcast triax families and impedance distinctionsAre similarly named triax connectors interchangeable just because they are all triax?

Evidence behind this page

Scope first. Source second. Approval separate.

2 linked sources · 2 scoped claims · 0 sources with inspection/access flags.

Page scope: Original V51 triax boundary schematic; not to scale and not a conductor wiring, mating-gauge or manufacturing drawing.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-04. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 2 source scopes, access limits and dates

S354 · LEMO LEMO 4A 75-ohm broadcast triax connector product reference

LEMO · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Product-specific identification of one 75-ohm triax contact system in the named LEMO series.

Not established / limitations: Source-backed identification does not establish universal wiring, protocol generation, device compatibility, safe installation or fabrication approval.

Locator: Electrical configuration: number of triax contacts and impedance

S361 · LEMO FXB.4A.675.CTCC97 4A 75-ohm broadcast triax product reference

LEMO · Manufacturer / product-owner domain · inspected 2026-10-06 · due 2027-01-04

Within inspection window

Scoped support: Product-specific mating/keying/mechanical context for one LEMO 4A 75-ohm triax example.

Not established / limitations: Example product characteristics do not establish camera/CCU standard, cable construction, conductor roles or universal system compatibility.

Locator: Product characteristics: 1 triax, 75 ohm, straight male plug, push-pull, circular keying and dimensions

Trace 2 claims to their source records

C313A · P313

LEMO identifies the cited product as one triax contact system with 75-ohm impedance.

Claim scope: V50 triax family/impedance identification fact only; no camera-standard, cable-assembly or system compatibility approval is inferred.

Source links: S354 · Evidence trail → (private workspace)

C313B · P313

LEMO’s cited 4A example is a straight male push-pull plug with one 75-ohm triax contact system and an overall length dimension of 91 mm.

Claim scope: Product-specific mating/keying/mechanical context only; no camera-system conductor roles, cable approval or fabrication permission is inferred.

Source links: S361 · Evidence trail → (private workspace)

Prepare this page for review →Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.