# Related Equipment and Cables

The RM-M7G and RCP-TX7 are best understood as part of a Sony SD camera remote
control ecosystem. Related camera control units and cables often contain the
pinout, mode, and compatibility details missing from the remote-panel manuals.

## CCA-7 Remote Cable

The CCA-7 family is the 10-pin remote cable used by the RM-M7G and RCP-TX7.

Known cable lengths:

- CCA-7-5.
- CCA-7-25.
- CCA-7-50.
- CCA-7-100.

Sony Japan CCA-7-25 page:
<https://www.sony.jp/pro/products/CCA-7-25/feature_1.html>

Important details from Sony Japan:

- Connects professional video cameras/camcorders and remote controls.
- 10-pin female to 10-pin male.
- Listed compatibility:
  - DXC-D30/D35/327/537/637 series, CA-325 series, CCU-M5/M7 to RM-M7G.
  - DXC-D30/D35/D50/D55 series to RCP-TX7/RCP-D50/RCP-D55.

The CCU-TX7 service manual includes a CCA-7 cable wiring diagram. Use that as
the better source for cable fabrication or continuity checks.

## CCU-TX7 / CCU-TX7P

Primary service manual:
<https://www.manualslib.com/manual/1068508/Sony-Ccu-Tx7.html>

Local PDFs:

- [docs/manuals/f1f018.pdf](manuals/f1f018.pdf) - ManualsLib manual 1068508.
- `docs/manuals/f1f018 (1).pdf` - duplicate of `f1f018.pdf`.
- [docs/manuals/710a0c.pdf](manuals/710a0c.pdf) - ManualsLib manual 3284330.

The CCU-TX7 is directly relevant to RCP-TX7 because the RCP was designed for
CCU-TX7/TX7P camera systems with CA-TX7/TX7P camera adaptors.

Useful sections in the CCU-TX7 service manual:

- Connector input/output signals.
- REMOTE connector information.
- Connection connector list.
- CCA-7 cable wiring diagram.
- Board switch functions.
- Service information and disassembly.
- Video signal system adjustment.
- Triax interface system adjustment.
- Intercom/tally details.

The CCU-TX7 rear panel REMOTE connector is described as a 10-pin connector for
the RCP-TX7 via a CCA-7 cable. The service manual's connection section lists
the REMOTE connector as Sony plug `1-766-848-11`, 10-pin male, or a CCA cable
assembly such as CCA-7-5 supplied with the RCP-TX7, with a 50 m maximum run.

CCU-TX7 service manual pinout for the rear `REMOTE` connector:

| Pin | Signal | Notes |
| ---: | --- | --- |
| 1 | Spare | unused |
| 2 | RM VIDEO OUT X | VBS, 1.0 Vp-p; later serial-number units only in one note |
| 3 | RM VIDEO OUT G | video ground |
| 4 | S.DATA RCP -> CCU | RX data equivalent, RS-232C-based, 38,400 bps |
| 5 | S.DATA GND | serial/data ground |
| 6 | S.DATA GND | serial/data ground |
| 7 | S.DATA CCU -> RCP | TX data equivalent, RS-232C-based, 38,400 bps |
| 8 | Spare | unused |
| 9 | POWER +12.5 V DC GND | DC return |
| 10 | POWER +12.5 V DC OUT | 10.6 V to 17.0 V DC |

The extracted CCA-7 wiring diagrams preserve connector names and some wire
colors, but not a reliable color-to-pin map. For cable rebuilding, use the
numbered pinout above and verify any original cable by continuity rather than
trusting OCR text.

Relevant CCU-TX7 service switches:

- `S1001 PANEL REMOTE/LOCAL`: factory `REMOTE`; chooses RCP vs COU when both
  are connected.
- `S1002 CONTROL MODE NORMAL/SLAVE`: invalid when the RCP is the active control
  device; factory `NORMAL` for COU use.
- `S1004`: selects RS-232C vs IF board path; factory setting is RS-232C side.

## CCU-D50 / CCU-D50P

Official operation manual:
<https://pro.sony/s3/cms-static-content/operation-manual/3620534151.pdf>

Sony Japan product page:
<https://www.sony.jp/pro/products/CCU-D50/>

The CCU-D50 is useful because it bridges older RM-M7G-style operation and
RCP-TX7-style operation:

- `M5A mode` supports basic control using RM-M7G.
- `TX7 mode` supports more detailed camera operation using RCP-TX7.

The official CCU-D50 manual lists RCP-D50/D51, RCP-TX7, and RM-M7G as remote
control options. It also includes a section on using the RM-M7G remote control
unit and describes panel active handoff behavior.

Front-panel system setting switches matter for remote testing:

- Switch 1 selects CCU command mode: OFF is `M5A mode`, ON is `TX7 mode`.
- Switch 6 selects remote/local priority when switch 1 is in `TX7 mode`: OFF
  gives priority to the device on the rear-panel REMOTE connector, ON gives
  priority to the CCU front panel.
- Switch 6 is disabled when an RM-M7G is connected.
- Setup menu `RCP RATE` controls rear REMOTE connector communication speed:
  select `38400` for RCP-D50/D51/TX7. The manual says other settings prevent
  connection.

The Japanese CCU-D50/CA-D50 catalog notes:

- CCU-D50 can use RM-M7G in M5A mode for basic DXC/DSR control.
- CCU-D50 can use RCP-TX7 in TX7 mode for broader picture-making controls.
- RCP-TX7 connector is circular 10-pin.
- RCP-TX7 power is DC 12 V, 10 V to 17 V range.
- RCP-TX7 power consumption is 4.0 W.

## DXC-D30 / DXC-D30WS

DXC-D30 user manual mirror:
<https://manualmachine.com/sony/dxcd30/551509-user-manual/>

This is useful for protocol research because it explicitly says the 10-pin
remote connector for RM-M7G and RCP-TX7 is designed according to RS-232C, and
that external PC control is possible with the proper Sony protocol.

System diagrams show:

- RM-M7G connected through CCA-7.
- RCP-TX7 connected through CCA-7.
- CCU-M7 / CCU-M5 camera control units.
- CCU-TX7 / CA-TX7 triax system.

## DXC-327B / DXC-327BP

Official Sony operating instructions PDF:
<https://pro.sony/s3/cms-static-content/operation-manual/3856085221.pdf>

Useful RM-M7G notes:

- RM-M7G connects with CCA-7-5/25/50/100 camera remote cable.
- CAMERA SELECT switch on RM-M7G should be set to `1`.
- Some RM-M7G controls do not affect camera output in this system.
- Some camera-side switches are disabled while RM-M7G is connected.

## DSR-390 / DSR-570WS Family

ManualMachine mirror:
<https://manualmachine.com/sony/powerhaddsr570wspl/1203049-user-manual/>

Useful notes:

- Has a 10-pin REMOTE connector for RM-M7G.
- CAMERA SELECT on RM-M7G should be set to `1`.
- EZ mode cannot be used while RM-M7G is connected.
- Power should be off before connecting or disconnecting remote equipment.
