NovaStar MRV300-1 LED Receiving Card with 50-Pin HUB
$ 20.00
NovaStar MRV300-1 is a legacy LED receiving card with two 50-pin HUB interfaces.
- Match the HUB board, data mode and connector orientation
- 2022 V1.1.0 reference: 256 × 256 at 60 Hz; older family Rev2.1.1 lists 256 × 226
- Confirm the hardware/firmware before relying on version-specific functions
Out of production and no longer available. Send your installed card and screen details to discuss replacement compatibility.
Out of stock
The NovaStar MRV300-1 is a legacy LED receiving card with two 50-pin HUB interfaces. It receives display data and connects to a matching module/HUB-board arrangement. Identify the card revision, connector orientation and saved configuration before selecting replacement hardware.
Availability: EagerLED’s existing listing states that this product is out of production and no longer available. The specifications below are versioned references for identifying an installed card; they do not guarantee that every older MRV300-1 has the same capacity or firmware functions.
MRV300-1 specifications: check the document version
NovaStar’s Chinese MRV300-1 specification V1.1.0, dated March 21, 2022, lists a 256 × 256-pixel load at 60 Hz. The older English MRV300 family Rev2.1.1, NS110100099, lists 256 × 226 pixels and identifies MRV300-1 as the standard variant with male connectors on top. Keep these references separate when checking an existing screen.
| Item | Documented value |
|---|---|
| Maximum load | 256 × 256 pixels at 60 Hz in the 2022 MRV300-1 document. |
| HUB connections | Two interfaces; match JH1/JH2 pin definitions to the required parallel or serial data mode. |
| Data outputs | Up to 20 groups of parallel RGB data or 64 groups of serial data in the overview. |
| Power | 3.3–5.0 V DC input; 0.5 A rated current; 2.5 W rated consumption. |
| Operating environment | −20°C to +70°C; 10%–90% RH, non-condensing. |
| Dimensions | 144.0 × 91.5 × 18.5 mm. |
The older family document instead gives 3.3 V minimum, 5.0 V typical and 5.5 V maximum, with 0.50 A typical current. Do not combine that older voltage range with the newer document’s loading and feature claims as a single guaranteed configuration.
Match the 50-pin HUB and data mode
The family specification describes 16-group RGBR, 20-group RGB and 64-group serial modes as alternatives. These are not counts to add together. Compare the chosen mode’s pin table, HUB adapter, module driver IC and scan arrangement before connecting another receiving card.
Connector position also matters. The older model list distinguishes MRV300-1 with male connectors on top from MRV300-2 with male connectors underneath, MRV300-3 with female connectors on top and MRV300-4 with female connectors underneath. Check both the label and the physical connectors, then compare mounting holes and cable clearance.
Functions described in the 2022 MRV300-1 document
V1.1.0 describes pixel-level brightness/color calibration, configuration readback, pre-stored startup or signal-loss images, and card temperature/voltage monitoring. LCD status display, dual-power status detection, loop redundancy and backup firmware are also documented for that reference configuration.
Some functions have specific requirements. Reloading calibration coefficients from module Flash requires modules with Flash. The 3D function requires a sending card supporting 3D. Communication-error detection requires NovaLCT V5.2.0 or later. Confirm hardware and firmware support before relying on these functions in a legacy installation.
Original MRV300-1 product photos
MRV300-1 FAQ
Which MRV300-1 resolution should I use?
Use the specification matching the installed hardware and firmware. The 2022 model-specific document lists 256 × 256 at 60 Hz; the older family document lists 256 × 226. The model name alone does not resolve this difference.
Can it connect directly to a HUB75E module?
Its two 50-pin HUB interfaces require a matching wiring/adapter arrangement. Verify the pinout and scan requirements before selecting a replacement or adapter.
What is needed for a replacement inquiry?
Provide clear front/rear photos, connector orientation, HUB-board model, module pixel dimensions, driver IC and scan method. Include cabinet mapping, controller model and the existing configuration/firmware information where available.
Specification download and replacement support
Download NovaStar MRV300-1 specifications V1.1.0 in Chinese, hosted on EagerLED’s sister site. Browse LED receiving cards or contact EagerLED with the installed screen details for a replacement compatibility check.
| Weight | 0.35 kg |
|---|
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