Hirose 7-pin DUB: Difference between revisions
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The '''Hirose 7-pin DUB''' connector (also called '''locking 7-pin DIN''' or '''7-pin DUB connector''') is a circular locking connector manufactured by Hirose Electric, used on U-matic VTRs and some professional S-VHS equipment for carrying [[Y/C | The '''Hirose 7-pin DUB''' connector (also called '''locking 7-pin DIN''' or '''7-pin DUB connector''') is a circular locking connector manufactured by Hirose Electric, used on U-matic VTRs and some professional S-VHS equipment for carrying [[Y/C DUB color-under]] signals. | ||
== Overview == | == Overview == | ||
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== See Also == | == See Also == | ||
* [[Y/C- | * [[Y/C DUB color-under]] — Color-under Y/C signal format | ||
* [[Mini-DIN-4]] — Standard S-Video connector (4-pin) | * [[Mini-DIN-4]] — Standard S-Video connector (4-pin) | ||
* [[S-Video (Y/C)]] — Standard Y/C signal format | * [[S-Video (Y/C)]] — Standard Y/C signal format | ||
Latest revision as of 03:02, 7 February 2026
The Hirose 7-pin DUB connector (also called locking 7-pin DIN or 7-pin DUB connector) is a circular locking connector manufactured by Hirose Electric, used on U-matic VTRs and some professional S-VHS equipment for carrying Y/C DUB color-under signals.
Overview
The connector features a locking ring mechanism similar to a BNC connector, providing a secure connection resistant to accidental disconnection. It carries separated luminance and chrominance video signals at color-under frequencies, along with sync and framing pulse signals.
The Hirose 7-pin DUB connector is found on most U-matic decks as "DUB IN" and "DUB OUT" ports, enabling direct machine-to-machine dubbing and connection to time base correctors without the signal degradation introduced by composite encoding and decoding.
Part Numbers
| Part Number | Type | Usage |
|---|---|---|
| RM12BPE-7P (71) | Male plug | DUB OUT (on VTR) |
| RM12BPE-7PH (71) | Male plug (right-angle) | DUB OUT (on VTR) |
| RM12BPE-7S (71) | Female socket | DUB IN (on VTR) |
Pinout
| Pin | Signal | Description |
|---|---|---|
| 1 | Y | Luminance |
| 2 | C | Chrominance (color-under frequency) |
| 3 | GND | Ground (Y) |
| 4 | GND | Ground (C) |
| 5 | Sync | Composite sync |
| 6 | CF | Color framing pulse |
| 7 | GND | Ground (Sync/CF) |
Note: Pinout may vary between manufacturers. Some early JVC S-VHS equipment used the same physical connector with a different pinout for standard-frequency Y/C signals.
Compatible Equipment
The Hirose 7-pin DUB connector is found on:
- Most Sony U-matic decks (VO-5800, VO-5850, BVU-series, etc.)
- Some JVC professional S-VHS decks
- Time base correctors with DUB input support (DPS-295, FOR-A FA-300, etc.)
- Transcoders such as the Digital Processing Systems DPS-210
Sourcing
The connectors are still manufactured by Hirose Electric and available from electronics distributors such as Digi-Key and Mouser. Pre-made DUB cables with genuine Hirose connectors are available from specialist suppliers.
See Also
- Y/C DUB color-under — Color-under Y/C signal format
- Mini-DIN-4 — Standard S-Video connector (4-pin)
- S-Video (Y/C) — Standard Y/C signal format
- BNC — Common professional video connector
