Broadcast Graphics with XPression

Design the handoff from a 4All event to XPression scene data with predictable formatting, network behavior, and monitoring.

Best for: Broadcast engineers, XPression operators, graphics developers, caption operators, and production IT.

Before you start

A compatible licensed 4All XPression Bridge installation, access to the 4All organization/event, and authorized access to the Ross XPression system.

• A supported Windows bridge machine.
• Known XPression version, DataLinq or caption-ingest method, template/scene field names, port allocation, and LAN routing.
• A sample caption script including long lines, punctuation, speaker changes, and non-ASCII characters.
• Firewall approval for only the selected protocol and endpoints.

Step by step

1. Prepare captions in 4All. Configure source language, provider, glossary, caption tuning, speaker routing, and live session. Verify clean captions in the web preview before blaming the graphics path.
2. Create the bridge. Sign in to XPression Bridge, select the organization and event, choose the caption source, and create a bridge configuration with a clear operational name.
3. Choose the transport. Use WebSocket DataLinq, captioning TCP, RSS over HTTP, or UDP according to the XPression integration design. Record host, port, direction, payload format, and connection ownership.
4. Configure formatting. Choose text, JSON, or XML; map current/previous lines as required; set line count and rolling behavior; select the source mode; and test Unicode and line breaks.
5. Configure XPression. Create or select the DataLinq source or ingest mapping, point it to the bridge, bind data fields to scene text objects, and define how scenes take, update, clear, and recover.
6. Test same-machine and network-machine behavior. For remote systems, verify routing and firewall state from the exact production accounts. For same-machine use, confirm port collisions and local security software.
7. Rehearse runtime control. Start the bridge, send test captions, take the scene, observe updates, clear data, stop/restart, and confirm logs. Establish whether the bridge or XPression operator owns restart decisions.
8. Monitor the final program. Inspect the actual keyed or composited output. Monitor bridge connection, incoming captions, DataLinq freshness, scene state, and final program simultaneously.

What success looks like: Caption text travels from 4All to the intended XPression scene with the correct encoding, line behavior, timing, and recovery path.

Check your setup

• A known test phrase appears in the correct scene field.
• Long captions roll or wrap as designed.
• Speaker changes and clearing behavior are correct.
• Restarting the bridge and DataLinq source recovers without stale text.
• The final program return matches the bridge monitor.

Troubleshooting

Bridge receives captions but XPression does not update

Check DataLinq source state, protocol/port, field mapping, template binding, scene take state, firewall, and whether the payload format matches the parser.

Text is truncated or corrupted

Check line count, encoding, Unicode support, delimiter/parser configuration, maximum field length, and template sizing.

Stale captions remain on air

Confirm clear messages, final-segment timing, scene logic, stop behavior, and operator ownership of manual clearing.

Security and operational notes

• Do not open bridge ports to untrusted networks.
• Test changes against a duplicate or off-air scene before modifying an on-air template.
• Keep bridge and XPression logs with synchronized system clocks for incident analysis.

Related guides

• 🌉 Requirements, Installation, and Updates
• 🔌 Output Configuration
• 🎬 XPression and DataLinq Setup
• 📟 Runtime Operations and Monitoring