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Description
Meridian Technologies ST-2A-1 Fiber Transmission System (Transmitter)Transmitter Multimode Fiber Unidirectional Audio Hot Swappable The ST 2A 1 Fiber Transmission System (Transmitter) from Meridian Technologies incorporates an all digital encoding technology that supports two unidirectional audio channels over one optical fiber. This model uses multimode fiber. It is well suited for use in intelligent transportation systems, security & surveillance work, access control, among many other applications and settings. Local
- Transmitter
- Multimode Fiber
- Unidirectional Audio
- Hot-Swappable
The ST-2A-1 Fiber Transmission System (Transmitter) from Meridian Technologies incorporates an all-digital encoding technology that supports two unidirectional audio channels over one optical fiber. This model uses multimode fiber. It is well suited for use in intelligent transportation systems, security & surveillance work, access control, among many other applications and settings.
Local indicators provide a visual indication of the status of each audio channel. 3-pin terminal blocks are used for connection of the audio channel interfaces. This series is also compatible with Meridian's SpectraSmart Network management and diagnostic PC-based system.
The DigiSlim product family is available as rack mount cards and modules that can be installed in any of Meridian's desk chassis or in 19" racking frames. This system can be configured in either star (module to rack) or trunking (rack to rack) configurations. These systems can be transformed in to a standalone module by using SR-500/S (standard configuration) or SR-1000/S frames.
- The device supports unidirectional audio
- This model is a laser-based system that uses multimode fiber
- This model uses ST fiber connectors
- It features 24-bit native digital encoding
- It uses Surface Mount Technology (SMT) for high reliability and repeatability
- This solution is designed to be reliable and repeatable
- Local LED indicators provide visual cues for system status
- System diagnostics are available for performance parameters
- The card is hot-swappable
- The laser features biased photo-detector circuitry for stable optical output over the full temperature range
- It meets NEMA TS1/TS2 and CALTRANS specifications
- It uses internal switching power supplies
- Automatically resettable solid-state current limiters are included on all power lines to provide equipment protection
- A wide optical dynamic range means optical attenuators are never needed
- Screw terminals are available for audio
In the Box
Meridian Technologies ST-2A-1 Fiber Transmission System (Transmitter)
- Ten-Year Warranty Against Defects in Material & Workmanship (from Original Date of Shipment)
| Audio | I/O Impedance: 600 Ohm (Balanced), 47 kOhm (Unbalanced) Frequency Response: 10Hz to 20KHz SNR: >90dB (Weighted) @ 1KHz In/Out Level: -8 to +8dBm (4Vp-p max.) Total Harmonic Distortion: <0.01% @ 1KHz Resolution: 24 Bi |
| Optical | Fiber Type/Size (um): Multimode (FP Laser) 9/125 Optical Output (dBm): -5 Receiver Sensitivity (dBm): -26 Optical Budget (dB): 21 Wavelength (nm): 1300/850 Optical Connector: ST Optical Dynamic Range (dB): 24 Fiber Data Rate: 250Mbps |
| Connectors | Video: 75 Ohm BNC (Gold Center Pin) Optical: ST Audio/Contact Closures: 14-pin Screw Terminals |
| Indicators | (1) Green: Power On (1) Bi-Color: TX Carrier/ Laser Over Current (1) Bi-Color: RX Carrier - Present / Error (1) Bi-Color: Audio Present / Overmodulation |
| Life | >170,000 hours @ Ground Fix 35C degrees per MIL217F |
| Power | 6W |
| Dimensions (HxWxD) | 0.8 x 6.5 x 5" (20 x 160 x 127mm) (1) slot |
| Weight | 1 lbs (0.45kg) |
| Packaging Info | |
|---|---|
| Package Weight | 1.5 lb |
| Box Dimensions (LxWxH) | 10.0 x 7.0 x 3.0" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 2301 reviews
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Product Reviews
★★★★★ 4
auto-rolling dog ball
I don't know what i'm doing wrong but my pets don't enjoy it. It's mobile on both settings. I think it just needs a place inside to place a treat or something. Quality seems okay. The battery lasts a long time. They chewed on it for a little bit and left it, the material is okay. It's made of some kind of rubber.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Fun, Interactive Toy That Keeps Pets Engaged
Summary: A smart rolling dog toy that helps reduce boredom and keeps pets active with minimal effort.
Pros:
Auto-rolling feature keeps play engaging
Durable, chew-resistant design
Encourages activity and mental stimulation
Simple to use with minimal setup
Works well for solo play sessions
Cons:
May be noisy on hard floors
Not ideal for very aggressive chewers
Battery life could be longer
Movement pattern can feel repetitive
Overall review:
This interactive dog ball is a great option for keeping pets entertained, especially when they need something to do on their own. The auto-rolling feature is the main highlight—it moves unpredictably enough to grab attention and keep dogs engaged for longer than a standard toy. It’s especially useful for reducing boredom when you’re busy or not able to actively play.
The build feels fairly durable and holds up well for regular chewing, though it’s probably not meant for extremely aggressive chewers. On hard floors, it can be a bit noisy as it moves around, and over time, the movement patterns may start to feel repetitive to more curious dogs. Still, it does what it’s designed to do—encourage activity and provide stimulation. Overall, it’s a fun and practical toy that adds some variety to a dog’s play routine.
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Fun for an active dog!
I have an Australian Shepherd that absolutely loves this auto rolling dog ball! The ball is hard, but covered in a rubber coating. It is still loud when it hits the floor, but that is to be expected. My dog has chased this as well as thrown this ball, and it is still working flawlessly! This ball is definitely durable! It is easy to charge, and provides hours of entertainment! The ball is a great size for a medium dog. I recommend it!
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Reviewed in the United States on June 5, 2026
★★★★★ 1
Auto-Rolling Dog Ball - loud with a mystery filling.
I got this to entertain my high energy dog and she does like it, but I don't.
The ball is incredibly loud and doesn't move around nearly as much as I had hoped. When your dog picks it up, it turn their mouth into an amplifier making it louder.
It bounces/vibrates around more than rolling. Which is not what I expected, but seems to be engaging enough for more dog (but that doesnt take much).
What I really dislike is there is no way on the exterior to know what mode you are in and the inside is full of grease. To charge it and to see the lights to identify what mode it is involves opening it and touching the grease covered insides. The lights don't seem to match the instructions when trying to switch modes. The light is supposed to stay on for 3s. It doesn't for either mode and immediately cycles through other colors making it more confusing.
The exterior seems durable enough for a moderate chewer and I like the color and texture.
At $15, it seems like a fair price, but I can't recommend this at any price point. I don't feel comfortable letting my dogs play with toys that could easily expose them to an unidentified grease. Any greased components should be sealed. Not somewhere I have to touch for normal operation and potentially leak.
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Gentle vibrations and rolling
My sweet old man dog didnt know what to think of this at first. We introduced it to him without turning it on at first, like a regular ball. That was fine, he was good with that and he liked to go chasing it (its heavy because its mechanical so I wouldnt throw it, a light toss/roll is how we started).
After we played that way a while we turned it on. At first he was confused as to why his toy was chasing him. It mostly vibrates and bops around a bit. But then my pup started chasing it and kicking it around like a little soccer ball and he LOVED THAT. A charge lasts quite a while too and if he doesnt play with it in for a few minutes it goes to sleep so its not just bouncing constantly and driving me crazy.
My pup likes it and it gives me a rest from the constant throwing so I'm happy!
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Reviewed in the United States on April 7, 2026