Communication Module

The Communication Module provides connectivity to external devices via network or serial communications according to what the protocol supports. The Communication Module consists of a number of different protocols which can be organized into three groups. This module supports the following: AMP, VDCP, Sony BVW, GVG100, Sony BVS, GlobalCache, RossTalk, DMX, and MIDI.

Purchasing the Communication Module gives you access to any of these protocols. You can also choose to purchase MIDI as its own module. After you have purchased the Communication Module you will see the new Communication tab in Preferences.

Playback Deck/Media Server Control Protocols

These protocols include AMP, VDCP, and Sony BVW. AMP and VDCP are media server protocols that have more capabilities than Sony BVW such as triggering clips by name. BVW can only control the playback of an already triggered clip.

Switcher Control Protocols

These protocols include GVG100, Sony BVS, and RossTalk. These protocols can control a switcher, allowing you to remotely enable and disable keys or fade to black.

Sony BVS is preferred over GVG100 when available since it has greater capabilities. RossTalk is a proprietary protocol supported by some Ross switchers. RossTalk is the preferred choice for a compatible Ross switcher because it uses network communication rather than serial. RossTalk is supported as 2 modes, Device and Controller. In Controller mode, ProPresenter can send commands to a connected Ross switcher. In Device mode, RossTalk provides some control of ProPresenter from a compatible Ross switcher. For Device mode, the Ross switcher is setup to connect to ProPresenter as if it were an Expression CG machine. Once connected, Up/Down on the switcher will advance through the items of the selected  playlist, and next will trigger slides or videos just like pressing the spacebar/right arrow key on  the ProPresenter machine. Note that if you want to use both Controller and Device modes for RossTalk, you must configure 2 RossTalk devices, one for each mode as these modes require two different network connections.

You can also clear the output using the Clear Layer command where the layers correspond to the different ProPresenter clear commands as follows:

• Layer 0 - Clear All
• Layer 1 - Clear Live Video
• Layer 2 - Clear Background
• Layer 3 - Clear Slide
• Layer 4 - Clear Props

To add any of the available protocols to ProPresenter, click on the Add Device button in the lower right corner and select the protocol from the list. Each protocol has unique configuration settings. We have set each protocol to use the standard configuration as specified by each manufacturer. If your configuration requires different settings you will need to refer to the documentation for the device you are connecting to with ProPresenter. The screenshot below shows GVG100 as an example.

After you have added a protocol, you will see a box that shows you the active protocols. You can connect or disconnect any protocol, or remove it, from here. If you need to change the settings for a protocol, click on the gear icon to open the settings menu.

Click on MIDI Setup or DMX Setup to modify these protocols.

The following screenshot shows several of the protocols listed at the same time. ProPresenter is capable of supporting more than one protocol at the same time, within reason. Some protocol combinations don't make sense to run at the same time, like AMP and VDCP, but some do like AMP and RossTalk.

DMX and MIDI Protocols

Both of these protocols allow the user to define the DMX channels or MIDI notes that are mapped to the various controls for ProPresenter. DMX is fixed to a sequence of contiguous channels just like a lighting fixture, whereas MIDI allows you to map any note to a given MIDI controllable ProPresenter command. These settings are defined in the Communication preference pane in ProPresenter under the DMX and MIDI buttons.

MIDI is covered extensively in the next section.

The DMX configuration allows you to define the starting channel and displays how the other channels are mapped. DMX supports ArtNet over a network only. USB-DMX interfaces are not supported. The screenshots below show a standard DMX setup. These values are entered by clicking on the DMX Setup button in the Communication Module. Note that for the first item you can manually select if that command will select a Playlist or select a Document within the current Playlist.

In the Communication preference pane you can setup devices which persist in ProPresenter until you remove them. They may optionally automatically reconnect when ProPresenter is relaunched. From this preference pane you can also configure the DMX and MIDI options. In addition, there's a checkbox for whether to allow filenames longer than eight characters for VDCP and AMP.

VDCP and AMP require a Video/Image Bin playlist to be designated as the Comm Module playlist. This is the playlist that is used to select clips with either of these protocols. You can designate any Video/Image Bin playlist as your Comm Module playlist by right-clicking on the playlist name. The display name of each video in this playlist must be unique and will be modified as necessary to make it unique. If the eight character filename option is checked, the display name will also be trimmed to eight unique characters as necessary. Consult your video switcher's manual to determine whether you need to enable the 8 character filename limit. If the switcher doesn't support variable length filenames, then you'll need to enable that option in ProPresenter.

For a switcher control protocol, an option will appear in the contextual menu of any slide to add a switcher control cue to that slide. Any time that slide is triggered, the chosen command is sent to the switcher if it's connected.

Assigning module commands to slides

When you have enabled a protocol that supports sending commands, you will be able to assign those commands to specific slides. Each protocol supports different cue options, so the menu that you see will be different. If you only have a single protocol assigned, you will not have the sub-menu of protocols. GVG100, RossTalk (Controller mode), and Sony BVS are the only protocols that have slide cues available.

Using RS-422 Serial with Communications Module

RS-422 is a serial standard that defines how the serial signal is transmitted electronically. There are several serial standards including RS-232 and RS-485. Note that these standards are electrically different and are not compatible even though in many cases they use the same DB-9 connector. Unfortunately, there are different, incompatible ways that RS-422 may be wired through a standard DB-9 connector. There are two common DB-9 pinouts that are used with RS-422 in the context of video production equipment. Depending on your computer serial interface, you may be required to create a cable or use adapters to convert from one pinout to another. In addition, you may have to compensate for a pinout on a serial interface that doesn't match either of these common pinouts.

Here are the two common pinouts:

Deck Control Slave	Deck Control Master
DB-9, usually Female	DB-9, usually Male
Pin 1 -> Ground	Pin 1 -> Ground
Pin 2 -> Tx -	Pin 2 -> Rx -
Pin 3 -> Rx +	Pin 3 -> Tx +
Pin 4 -> Ground	Pin 4 -> Ground
Pin 5 -> Nothing	Pin 5 -> Nothing
Pin 6 -> Ground	Pin 6 -> Ground
Pin 7 -> Tx +	Pin 7 -> Rx +
Pin 8 -> Rx -	Pin 8 -> Tx -
Pin 9 -> Ground	Pin 9 -> Ground

These pinouts were originally used on tape based playback decks and have since been used on media servers and video switchers as well. The Deck Control Master pinout would typically be found on a controlling device such as an editor or video switcher. The Deck Control Slave pinout would typically be found on a playback deck that is to be controlled via serial.

There are two common types of RS-422 computer interfaces you might run into. One is the serial port on video hardware such as BlackMagic Decklink cards or UltraStudio 4K devices. There are other similar devices such as those made by AJA which also have RS-422 ports, however we have discovered that AJA does not properly set their serial port configuration. In at least some of their devices (namely the ioXT), the serial port is fixed to a certain baud rate, parity, etc. and cannot be changed, as confirmed by AJA. Unfortunately, none of the manufacturers we talked to really support the serial port on their video hardware as a general purpose serial port, they tend to only support it when used with their own software. However, we found that the serial port on BlackMagic hardware was very reliable.

The other common RS-422 interface is a simple RS-422/USB adapter. Note that this is not the same thing as (and not compatible with) an RS-232/USB adapter which is much more common. RS-422/USB adapters are typically designed for use in computing environments rather than video production environments, therefore they will typically have a pinout that differs from the two specified above. In our limited testing, we have had mixed results with RS-422/USB adapters. There are also RS-422/RS-232 converters which may work in conjunction with a common RS-232/USB adapter. We have not tested this setup.

Serial ports that are found on video hardware interfaces such as those made by BlackMagic typically have a Deck Control Master pinout configuration. When using the VDCP, AMP or Sony BVW protocols to control video playback in ProPresenter, the computer's serial port needs to be a Deck Control Slave configuration instead. This requires a custom cable or the use of adapters to switch the transmit and receive pins. When using GVG100 or Sony BVS editor protocols to control a video switcher, the editor port on a video switcher typically matches the Deck Control Slave pinout so this works with a BlackMagic serial port with just a straight through serial cable.

One of the easiest ways to create the necessary DB-9 cable for whatever pinout you need, is to use two DB9/ethernet adapters connected with a straight thru ethernet cable. These inexpensive adapters are available from monoprice www.monoprice.com/products/product.asp?p_id=1151 www.monoprice.com/products/product.asp?p_id=1152

The adapters come ready to assemble. You insert the colored leads from the ethernet jack into the appropriate pins of the DB9 connector. Here is a common configuration used to swap the transmit and receive lines for using a BlackMagic serial port as a Deck Control Slave with the VDCP, AMP or Sony BVW protocols in ProPresenter:

Adapter 1:	Adapter 2:
DB9 Pin 1 <-> White	DB9 Pin 1 <-> White
DB9 Pin 2 <-> Blue	DB9 Pin 2 <-> Black
DB9 Pin 3 <-> Yellow	DB9 Pin 3 <-> Orange
DB9 Pin 4 <-> Red	DB9 Pin 4 <-> Green
DB9 Pin 5 <-> Nothing	DB9 Pin 5 <-> Nothing
DB9 Pin 6 <-> Green	DB9 Pin 6 <-> Red
DB9 Pin 7 <-> Orange	DB9 Pin 7 <-> Yellow
DB9 Pin 8 <-> Black	DB9 Pin 8 <-> Blue
DB9 Pin 9 <-> Brown	DB9 Pin 9 <-> Brown
Colors are the Ethernet leads.	Colors are the Ethernet leads.

The goal in creating the proper cable is to connect the Receive lines Rx-/Rx+ with the Transmit lines on the other end Tx-/Tx+, as well as connecting the ground pins. The polarity of the Rx/Tx connection should match, so Rx- should be connected to Tx- and Rx+ should be connected to Tx+. This process is the same regardless of what serial interface you are connecting to. For RS-422/USB adapters or other RS-422 serial ports, you may need to consult the documentation for your device to get the pinout.