# 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: 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: 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: Sony Japan product page: 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: 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: 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: 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.