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Marshall Mini Camera



Marshall miniature camera range enable remote control of OSD menus and multiple direct access functions over RS485 (VISCA). A typical setup consists of a CI0 IP to serial interface to control the camera over IP from an RCP.

Main Adjustments

OSD menusAll functions available
ExposureIris1,2, Shutter, Gain, Auto Exposure
White balanceAuto (ATW), One Push, Manual
Primary correctionsMaster Black1 , Master Gamma, Color Gains, Saturation
Lens2Iris, Focus, Auto focus, Zoom
OtherDetail Enhancement, Digital Zoom1, White Clip
  1. not supported on all models
  2. on zoom block cameras

Camera Models

Although all cameras are using the VISCA protocol, they all have a different set of functionalities and the supported functions from the protocol are specific to each model. The following cameras have been tested and documented. Other cameras will likely work with the 'generic' model or one of the similar models.

CV503 - CV506

  • Color gains have no filtering unlike the CV502, this provides more reactive controls. Use moderate changes to prevent stepping.
  • Digital zoom is directly available.


  • Digital zoom is available through the OSD menus only.


  • Full lens control enabled: zoom, focus, iris


  • The OSD menu automatically hides when direct commands are sent from the RCP
  • There is filtering on some settings such as color gains which creates smoother controls but a longer reaction time
  • Camera might not be detected with an early firmware, check the troubleshooting section below


  • There is no direct Master Black control available from the protocol but master black can be changed from the OSD menus.
  • There is filtering on some settings such as color gains which creates smoother controls but a longer reaction time


  • The CV500 does support Pelco only and it is possible to control OSD menus.
  • Use the CV500 camera model in the configuration, not the Marshall Generic


Communication settings

The control of Marshall cameras uses RS485 for communication at 9600 bauds. One camera can be connected on each port of the CI0 and the camera address should be the same on each port.

The camera configuration should be adjusted from the OSD menus with the following values:


[1] The camera address should be set to 01. This is the address used by the system in all modes except in a bus configuration.

[2] Default baud rate: 9600 bauds.

Camera models

  • Marshall - Generic: this is the model to choose by default for any Marshall camera. The model will be automatically detected and available features automatically adjusted based on the camera capabilities. The communication with the camera should be bidirectional which is the case when using a CI0 or RIO directly connected to the camera.

  • Marshall - CVxxx models: to be used when the camera model cannot be automatically detected. This is usually the case with unidirectional wireless or RS485 over fiber systems.

Interface port

  • Both ports from CI0 or RIO can be chosen as they both support RS485.

  • It is possible to directly plug a USB RS485 dongle to the RCP.


Cyanview provides cables to connect the camera in 2 different ways:

  • Directly to the 12-pin Hirose connector at the back of the camera
  • Through the breakout cable supplied by Marshall with the camera
Cable ReferenceDescription
CY-CBL-6P-MARSHALL-01Power and RS485 adapter cable for Marshall 12-pin Hirose cameras
CY-CBL-6P-PFAN5.5x2.1mm DC Power plug and RS485/RS522/RS232 fanout adapter cable for Marshall Breakout Cable
CY-CBL-6P-FANPower and RS485/RS522/RS232 fanout adapter cable for Marshall Breakout Cable

Note: Use generic extension cables for longer length: CY-CBL-6P-EXT.

Connection to the 12pin Hirose camera connector


Newer Marshall cameras are equipped with a 12-pin Hirose connector for power and control.



cyanview-support-integration-marshall-mini-camera-serial-cable-CY-CBL-6P-MARSHALL-01 cyanview-support-integration-marshall-mini-camera-serial-cable-CY-CBL-6P-MARSHALL-01

Connection using the Marshall Breakout Cable


Bullet cameras CV225/CV226 and the Marshall Breakout cable are terminated by a DC 5.5x2.1 power jack and a phoenix block connector for RS485 control. The CY-CBL-6P-PFAN cable fits these 2 connectors.



cyanview-support-integration-marshall-mini-camera-serial-CY-CBL-6P-PFAN cyanview-support-integration-marshall-mini-camera-serial-CY-CBL-6P-PFAN

CY-CBL-6P-PFAN is a generic fanout cable with a separate DC jack for power. The cable doesn't come with the Phoenix block connector but Marshall does provide it with the cameras. Follow the diagram to connect it.

Connection using the push-lock connectors

For CV502/CV530 or similar cameras.


Cable P/N: CY-CBL-6P-FAN


CY-CBL-6P-FAN is a generic fanout cable that can be used for generic purposes. Cut the yellow and blue wires not needed for this Marshall camera.

Advanced Setup

RS485 Bus

VISCA allows up to 8 cameras to be connected to an RS485 bus. When a VISCA bus is added and assigned to a CI0 serial port in the configuration, up to 8 interfaces become available. Set each camera with a different Address (see Communication Settings) and select in the configuration GUI the corresponding port that matches the address.


  1. The camera is not detected

    • Check the camera settings through the OSD: baudrate is 9600 and Camera ID is 1
    • Check the cable and pinout, please refer to our cable page.
    • Some older camera models didn't acknowledge commands or send any data back. In this case they will still react to controls but will appear red in the system. CV502 firmware prior to version S.0.6.a will not be detected. In this case it is appropriate to use unidirectional mode (advanced parameters) which will also make the camera appear green.
  2. The camera is in black and white

    The camera is probably in auto DAY/NIGHT mode and should be set to DAY to prevent switching to black and white as soon as the light decreases. See Default Startup Settings to change the camera default powering mode.

Knowledge Base

Some tips to get the most out of your Marshall cameras.

Default Startup Settings

Most Marshall cameras being CCTV cameras, they start by default with the DAY/NIGHT setting set to AUTO by default. In low light conditions, this results in the camera switching to black and white automatically from time to time. To prevent this, it is necessary to switch the camera from AUTO to DAY and save the new settings as reset defaults.


[1] In the IMAGE CONTROL menu, select DAY/NIGHT mode

[2] Change value from AUTO to DAY

[3] From the MAIN MENU, change RESET from ON to MODE then press select

[4] Change MODE from FACTORY to USER, this will change the camera startup settings from FACTORY to USER settings

[5] In SAVE, select ON and press select, this will save the current settings as user startup settings

[6] Exit the menus and save at the same time