FIDO-4T-ST - Audio/video converter AJA - Free user manual and instructions
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| Product Type | Audio/video converter |
| Brand | AJA |
| Model | FIDO-4T-ST |
| Input Interface | 1 x 12G-SDI BNC |
| Output Interface | 1 x Fiber optic (ST connector), 1 x 12G-SDI loop-out |
| Fiber Connector | ST type |
| Supported Video Formats | SD, HD, 2K, 3G, 6G, 12G SDI up to 4K/UltraHD 60p |
| SDI Standards | SMPTE-424, SMPTE-425, ST-2081, ST-2082 |
| Maximum Transmission Distance | Up to 10 km on single-mode fiber (approx.) |
| Dimensions (W x H x D) | 2.5 x 0.8 x 2.0 in (63.5 x 20.3 x 50.8 mm) |
| Weight | 0.4 lb (approx.) |
| Power Supply | +5V DC |
| Power Connector | Locking DC connector |
| Power Consumption | Approx. 5W |
| Operating Temperature | 0 to 40°C (32 to 104°F) |
| Signal Processing | Real-time conversion, no frame delay |
| Mounting Options | 1/4-20 tripod socket, Velcro |
| LED Indicators | Power, input and fiber output status |
| Included Accessories | Power adapter, quick start guide |
| Warranty | 2 years limited |
| Repair Policy | Repair via authorized AJA service centers |
Frequently Asked Questions - FIDO-4T-ST AJA
What is the AJA FIDO-4T-ST?
The AJA FIDO-4T-ST is a compact audio/video converter that transmits 12G-SDI signals over optical fiber using ST connectors. It is part of AJA's FIDO series, designed for reliable long-distance signal distribution in broadcast and production environments.
What type of fiber optic cable does it use?
The FIDO-4T-ST uses a single-mode fiber optic cable with ST connectors. For best performance, choose a cable that matches the transmission distance and connector type.
How far can the fiber signal travel?
With the FIDO-4T-ST, you can transmit 4K/UltraHD signals up to distances of 10 kilometers (6.2 miles) over single-mode fiber, depending on the exact cable and network configuration.
Does the FIDO-4T-ST support 4K resolution?
Yes, it supports 4K/UltraHD formats up to 60p, as well as all standard SD, HD and 2K SDI formats. It is fully compatible with 12G-SDI single-link connections.
Do I need to configure the device before use?
No configuration is required. The FIDO-4T-ST automatically detects and converts the incoming SDI signal to transmit it over fiber. Simply connect the SDI input and fiber output, then power on.
How do I power the FIDO-4T-ST?
The device requires a +5V DC power supply. Use the included power adapter, or connect a suitable 5V supply (e.g. via the locking DC connector) from a camera battery or USB battery pack.
Can I use the FIDO-4T-ST with a camera?
Yes, many productions use the FIDO-4T-ST to send signals from a camera's SDI output to a distant monitor or switcher. It works with any 12G-SDI source, including cameras, recorders and graphics systems.
Does the conversion add latency?
No, the FIDO-4T-ST performs real-time signal processing with no frame delay. This makes it suitable for live events and critical production workflows where timing is essential.
What is the difference between a FIDO-4T and a FIDO-4R?
The FIDO-4T is a transmitter (electrical-to-optical) and the FIDO-4R is a receiver (optical-to-electrical). The FIDO-4T-ST is a transmitter variant with ST fiber output. For a complete link, pair it with a corresponding receiver.
How should I clean and maintain the fiber optic connectors?
Always clean fiber connectors using approved fiber cleaning tools before mating them. Avoid touching the end faces. Wipe the metal housing with a dry, lint-free cloth. Do not use liquid cleaners on the connectors.
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USER MANUAL FIDO-4T-ST AJA
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Product information
Brand : AJA
Model : FIDO-4T-ST
Category : Audio/video converter