MRV412-N LED Receiving Card
Flagship receiving card with 512×512@60Hz loading, 18bit+ processing, Color Management (DCI-P3/Rec.2020), Low Latency mode, and 90° image rotation — the most advanced mid-format receiving card in NovaStar’s lineup, supplied by Excelled, a global LED screen manufacturer for professional B2B system integrators.
Quick Answer: What Is the MRV412-N LED Receiving Card?
The NovaStar MRV412-N LED receiving card is a flagship receiving card designed for professional LED display walls. It loads 512×512@60Hz through 12 HUB75E connectors, with 18bit+ grayscale, Color Management (Rec.709/DCI-P3/Rec.2020) and 1-frame Low Latency, configured via NovaLCT — built for virtual production, broadcast studios and premium fine-pitch indoor installations.
What Is the NovaStar MRV412-N LED Receiving Card?
MRV412 LED receiving card — specifically the MRV412-N variant — is NovaStar’s flagship mid-format receiving card, released in 2024 as the successor to the MRV336. It doubles the resolution ceiling to 512×512@60Hz (PWM driver ICs) while introducing a suite of professional-grade image processing features previously reserved for NovaStar’s top-tier controllers: 18bit+ grayscale (4× smoother than standard 16bit), Color Management with Rec.709/DCI-P3/Rec.2020 gamut support, individual Gamma adjustment per RGB channel, and a Low Latency mode that reduces video pipeline delay to just 1 frame.
The MRV412-N features 12 standard HUB75E connectors supporting up to 24 groups of parallel RGB data — the same port count as the MRV336 but with double the per-port throughput to handle the 512×512 resolution. This makes the MRV412-N the ideal receiving card for fine-pitch LED walls, broadcast studios, virtual production volumes, and any application where color accuracy, grayscale fidelity, and low latency are non-negotiable.
Resolution
512×512@60Hz — 4× the pixel area of 256×256 cards, one card drives more display.
Grayscale
4× smoother gradients than 16bit — eliminates banding at low brightness for HDR content.
Color Mgmt
Rec.709 / DCI-P3 / Rec.2020 + custom gamuts — cinema-grade color on LED walls.
Low Latency
1-frame video pipeline delay (with RAM driver IC) — critical for virtual production.
MRV412-N Specifications — 512×512, 18bit+, Color Management
All values sourced from the official MRV412 Specifications V1.0.3 document (the MRV412-N Receiving Card Specifications, 2025-05-20), published by NovaStar. The key MRV412 features are summarized in the table below. Measurements taken under standard conditions with 8bit video source and DC 3.8V–5.5V input.
| Parameter | Specification |
|---|---|
| Product Type | Flagship general-purpose LED receiving card — MRV412-N variant, 12 HUB75E, 24 RGB groups |
| Max Resolution (8bit source) | 512×512@60Hz (PWM driver IC) · 512×384@60Hz (common driver IC) |
| HUB75E Connectors | 12× HUB75E enhanced — supports up to 24 groups of parallel RGB data |
| 18bit+ Processing | 4× grayscale improvement over standard 16bit — eliminates banding at low brightness, smoother HDR gradients |
| Color Management | Standard gamuts: Rec.709, DCI-P3, Rec.2020 + custom gamut — precise color reproduction for broadcast and cinema |
| Low Latency Mode | 1-frame latency (requires modules with driver IC with built-in RAM) — critical for virtual production and real-time XR |
| 90° Image Rotation | 0°/90°/180°/270° in multiples of 90° — enables creative mounting orientations without external processing |
| Individual Gamma per RGB | Separate gamma adjustment for Red, Green, and Blue channels — corrects white balance offset at low grayscale |
| Multi-batch Adjustment | Compensate brightness variance across different production batches of LED modules |
| Pixel Calibration | Pixel-level brightness and chroma calibration via NovaStar calibration system |
| Quick Seam Correction | Correct bright/dark lines from module/cabinet splicing — immediate effect |
| 3D Function | Yes — works with 3D-capable controller for active 3D LED displays |
| Mapping 1.1 | Cabinets display controller number + receiving card number + Ethernet port — complete topology visualization |
| Monitoring | Temperature · Voltage · Bit Error Detection · Ethernet Cable Disconnection Detection (new — monitors disconnect count for link health) |
| Redundancy | Loop Backup · Dual Configuration Parameters Backup · Dual Program Backup |
| Readback | Firmware Program Readback · Configuration Parameter Readback |
| Cabinet LCD | 5-pin LCD connector — displays temperature, voltage, single/total runtime |
| Self-Test | Button — press twice after Ethernet disconnect to cycle test patterns |
| Indicator Diagnostics | 5 patterns: 1s flash (normal) · 3s flash (no Ethernet) · 3×/0.5s (no video) · 0.2s (backup program) · 8×/0.5s (loop backup switchover) |
| Ethernet Ports | 2× Gigabit Ethernet (RJ45) — each can serve as input or output |
| Input Voltage | DC 3.8V–5.5V · Rated current: 0.5A · Rated power: 2.5W |
| Dimensions | 145.6 × 91.5 × 19.3 mm (PCB ≤2.0mm, total ≤20.0mm) |
| Net Weight | 96.0 g (single card) |
| Operating Temperature | −20°C to +70°C |
| Storage Temperature | −40°C to +85°C — wider range than MRV336 (−25°C to +125°C) |
| Humidity | 10%–90% RH operating / 0%–95% RH storage (non-condensing) |
| Packing | Blister pack per card · 100 cards per box · 625×180×470mm |
| Certifications | RoHS · EMC Class A |
| Firmware | V1.0.3 (latest: 2025-05-20 — adds Ethernet cable disconnection detection) |
| Software | NovaLCT (Windows) — configuration, calibration, color management, firmware update, monitoring |
MRV412-N: 18bit+, Color Management & Low Latency — Professional Features in a Receiving Card
What sets the MRV412-N apart from every other mid-format NovaStar receiving card — including the MRV328 and MRV336 — is the integration of three features that normally require an external video processor: 18bit+ grayscale processing, hardware Color Management with cinema-standard gamuts, and a Low Latency pipeline mode. These features make the MRV412-N particularly suited for virtual production volumes, broadcast LED walls, and premium fine-pitch installations.
MRV412-N 18bit+ — 4× Grayscale, Zero Banding
Standard receiving cards process video at 14–16 bits per channel, which produces visible contour banding at low brightness levels — a critical flaw for HDR content and camera-facing LED walls. The MRV412-N’s 18bit+ engine quadruples the grayscale steps, delivering mathematically smooth gradients from 0.1% to 100% brightness. On camera, this eliminates the banding artifacts that plague lower-bit-depth cards in broadcast and film environments.
MRV412-N Color Management — Cinema-Grade Gamut Control
The MRV412-N is the first NovaStar mid-format receiving card with hardware Color Management supporting Rec.709 (HDTV), DCI-P3 (digital cinema), and Rec.2020 (UHD/HDR) standard color spaces — plus user-definable custom gamuts. This means the LED wall’s native wide gamut can be accurately mapped to the target color space at the receiving card level, eliminating the need for an external color processor in the signal chain.
MRV412-N Low Latency — 1 Frame, Real-Time
When enabled, Low Latency mode reduces the video pipeline delay on the receiving card end to 1 frame (requires modules using driver ICs with built-in RAM). This is essential for virtual production where camera tracking latency must stay under 2–3 frames total system delay, and for live event IMAG where audio/video sync is critical.
MRV412-N Installation — 12-Port HUB75E Wiring & Replacement
The MRV412 receiver card mounts onto the LED module hub board via its 12 HUB75E connectors (MRV412 HUB75E pin definition in the table below). With 512×512 resolution capacity, careful port-to-module assignment is critical — the card can drive more pixels per port than any other mid-format NovaStar receiving card, enabling configurations where one MRV412-N replaces two 256×256 cards. Follow the MRV412 installation checklist below.
MRV412-N HUB75E Pin Definition (JH1 Reference)
| Pin | Signal | Pin | Signal | Description |
|---|---|---|---|---|
| 1 | R1 (Red 1) | 2 | G1 (Green 1) | RGB data group 1 |
| 3 | B1 (Blue 1) | 4 | GND | Ground |
| 5 | R2 (Red 2) | 6 | G2 (Green 2) | RGB data group 2 |
| 7 | B2 (Blue 2) | 8 | HE1 (Line E) | Line decoding signal |
| 9 | HA1 (Line A) | 10 | HB1 (Line B) | Line decoding signals |
| 11 | HC1 (Line C) | 12 | HD1 (Line D) | Line decoding signals |
| 13 | HDCLK1 (Clock) | 14 | HLAT1 (Latch) | Shift clock + latch |
| 15 | HOE1 (OE) | 16 | GND | Output enable (active low) |
MRV412-N Installation Checklist
- Power off the cabinet before inserting or removing the MRV412-N.
- Plan for 512×512 load — with double the resolution of 256×256 cards, verify your module configuration fits within the 512×512 ceiling before wiring.
- Align HUB75E pin 1 on both card and hub board — look for the triangle/notch marker.
- Distribute modules evenly across the 12 ports — each port handles up to 2 RGB data groups.
- Connect Ethernet in loop topology — main + backup lines. The indicator’s 8×/0.5s flash pattern confirms loop backup activation.
- Press self-test button twice after Ethernet disconnect to cycle test patterns across all 12 ports.
- Enable Low Latency only when needed — it requires driver ICs with built-in RAM; verify module compatibility before enabling.
MRV412-N NovaLCT Configuration — Firmware Update, Color Management & Readback
The MRV412-N is configured through NovaLCT (NovaStar LED Configuration Tool, Windows). The latest firmware (V1.0.3, 2025-05-20) adds Ethernet cable disconnection detection alongside the existing feature set. Configuration parameter readback, firmware program readback, and real-time monitoring of temperature, voltage, and bit error rate are all accessible from one interface. Pair the card chain with our VX1000 all-in-one LED controller when the project needs multiple inputs and layer processing.
MRV412-N NovaLCT Workflows
| Workflow | Steps | Result |
|---|---|---|
| Color Management Setup | 1. Select target gamut: Rec.709 / DCI-P3 / Rec.2020 / Custom 2. Calibrate with NovaCLB camera 3. Push gamut mapping to MRV412-N |
LED wall matches cinema/broadcast color standards at the receiving card level |
| Low Latency Configuration | 1. Verify driver IC supports built-in RAM 2. Enable Low Latency in NovaLCT 3. Confirm 1-frame pipeline delay |
Real-time video for virtual production — total system latency under 2–3 frames |
| 90° Image Rotation | 1. Select rotation: 0°/90°/180°/270° 2. Apply to receiving card |
Creative mounting — portrait/landscape swap without external scaler |
| Individual RGB Gamma | 1. Measure white balance at low grayscale 2. Adjust R/G/B gamma independently 3. Verify uniform grayscale tracking |
Neutral grayscale from 0.1% to 100% — no color cast at any brightness |
| Multi-batch Adjustment | 1. Identify cabinets with different LED batch dates 2. Calibrate batch brightness offsets 3. Push correction to affected cards |
Uniform brightness across cabinets from different production runs |
| Firmware Readback | 1. In NovaLCT, select receiving card 2. Read back firmware to local PC 3. Archive as .fpga file |
Offline firmware backup for disaster recovery and mass deployment |
MRV412-N Datasheet, Manual & Downloads
- MRV412 Manual / MRV412 Datasheet (PDF): MRV412 Specifications V1.0.3 — dimensions, pin definitions, indicator patterns and environmental limits, available from the official NovaStar download center.
- MRV412 Download — NovaLCT Software: NovaLCT for Windows — configuration, calibration, color management, firmware update and readback, from the official NovaStar download center.
- MRV412 Price & Quotation: wholesale B2B pricing depends on quantity and destination — use the contact page to request a quotation.
MRV412-N Troubleshooting — Common NovaStar LED Display Problems & Solutions
The MRV412-N includes the most advanced diagnostic capabilities in NovaStar’s receiving card line — including Ethernet cable disconnection detection (new in firmware V1.0.3) and the full 5-pattern indicator system. These tools help system integrators resolve common NovaStar LED display problems before they impact showtime.
Q1 What is the MRV412-N LED receiving card and how many pixels does it support?
Diagnosis: The MRV412-N is NovaStar’s flagship mid-format receiving card, released in 2024. Solution: It supports up to 512×512@60Hz (PWM driver ICs) through 12 HUB75E connectors, with 18bit+ grayscale, Color Management, 1-frame Low Latency and 90° image rotation — configured and monitored through NovaLCT.
Q2 How do I configure my LED wall with MRV412-N receiving cards?
Start with the resolution plan: The MRV412-N supports up to 512×512@60Hz (PWM ICs). In NovaLCT, map your cabinet layout — each card drives up to 512×512 pixels. For a 1920×1080 wall, you need a minimum of 4 cards horizontally × 3 cards vertically (with room to spare). Use Mapping 1.1 — each cabinet displays its controller number + receiving card number + Ethernet port — to verify your wiring topology before pushing the final configuration.
Q3 How do I know if the Ethernet cable to my receiving card has been disconnected?
New in firmware V1.0.3: The MRV412-N can detect and count Ethernet cable disconnection events. In NovaLCT, check the Ethernet communication monitoring panel — it records the number of times each port’s cable was disconnected. This is invaluable for diagnosing intermittent faults: a rising disconnect count on a specific port indicates a loose connector, damaged cable, or failing RJ45 jack. Replace the suspect component before it causes a show-stopping failure.
Q4 LED wall shows color banding at low brightness — how to fix?
This is what 18bit+ solves. Standard 16bit cards produce visible gradient steps at low brightness. The MRV412-N’s 18bit+ engine quadruples grayscale resolution. Solution: In NovaLCT, verify 18bit+ is enabled. If banding persists, check that your Individual RGB Gamma is calibrated — uncorrected gamma differences between R/G/B channels amplify low-brightness banding. Run a full calibration with NovaCLB and push the coefficients to the MRV412-N.
Q5 Low Latency mode is enabled but latency is still high?
Driver IC compatibility check: Low Latency (1 frame) requires LED modules using driver ICs with built-in RAM. Standard driver ICs without RAM cannot support the 1-frame pipeline — the MRV412-N falls back to normal latency. Solution: Verify your LED module spec sheet confirms RAM-equipped driver ICs (common models: ICN2065, MBI5252, etc.). If your modules use standard ICs, disable Low Latency to avoid unexpected behavior.
Q6 Color looks different on the LED wall vs. my reference monitor?
Color Management misconfiguration. The MRV412-N’s Color Management maps the LED wall’s native gamut to a target color space. If your content is graded for Rec.709 but the card is set to native/unmanaged, colors appear oversaturated. Solution: In NovaLCT, set Color Management to Rec.709 for HDTV content, DCI-P3 for digital cinema, or Rec.2020 for HDR/UHD. For maximum accuracy, use NovaCLB to create a custom gamut profile matched to your specific LED modules.
Q7 Indicator flashing 8 times every 0.5s — what does this mean?
Loop backup has activated. A redundancy switchover occurred — the primary Ethernet path failed and the backup path is now carrying the signal. The display is operating normally. Action: Check the Ethernet cable disconnection count in NovaLCT to identify which port triggered the switchover. Replace the faulty cable or connector to restore full redundancy. The 8-flash pattern is your early warning system — address it before a second failure takes down the cabinet.
Q8 MRV412-N vs MRV336 — which receiving card should I choose?
Diagnosis: Both carry 12 HUB75E ports, but they target different tiers. Solution: Choose the MRV412-N for 512×512 resolution with 18bit+, Color Management and Low Latency in virtual production and broadcast; choose the MRV336 for 256×256 cabinets needing EMC Class B compliance. Both support loop backup and dual program backup.
Q9 What is the MRV412 price for bulk orders?
Diagnosis: NovaStar publishes no fixed retail price; genuine MRV412-N pricing depends on quantity, packing and destination. Solution: Excelled supplies the MRV412-N on wholesale B2B terms. Request a quotation through our contact page with your quantity and destination, and you will receive volume pricing for the factory-standard blister packing, 100 cards per box.
Q10 Where can I download the MRV412 manual and firmware?
Diagnosis: The official reference is the MRV412 Specifications V1.0.3 document; firmware and NovaLCT are distributed through NovaStar’s official download center. Solution: Read the V1.0.3 document for pin definitions, dimensions, indicator patterns and environmental limits. Update firmware only through NovaLCT, and use Firmware Readback to archive a known-good copy before updating.
MRV412-N vs. MRV336 vs. MRV328 — Which Is the Best Novastar LED Wall Controller Card?
NovaStar’s mid-format receiving card line now spans from the 8-port general-purpose MRV328 to the 512×512 flagship MRV412-N. Use this comparison to match the right Novastar LED wall controller card to your resolution, color accuracy, and latency requirements.
| Feature | MRV412-N ★ | MRV336 | MRV328 | MRV208 |
|---|---|---|---|---|
| Max Resolution (8bit) | 512×512@60Hz | 256×256@60Hz | 256×256@60Hz | 256×256 |
| HUB75E Ports | 12× | 12× | 8× | 8× (HUB75) |
| RGB Data Groups | 24 | 24 | 16 | 16 |
| Grayscale Processing | 18bit+ (4×) | Standard | Standard | Standard |
| Color Management | ✓ Rec.709/DCI-P3/Rec.2020 | ✗ | ✗ | ✗ |
| Low Latency (1 frame) | ✓ | ✗ | ✗ | ✗ |
| 90° Image Rotation | ✓ 0/90/180/270 | ✗ | ✗ | ✗ |
| Individual RGB Gamma | ✓ | ✗ | ✗ | ✗ |
| Multi-batch Adjustment | ✓ | ✗ | ✗ | ✗ |
| Mapping Version | 1.1 (full topology) | Standard | Standard | Standard |
| ETH Disconnect Detection | ✓ (V1.0.3+) | ✗ | ✗ | ✗ |
| EMC Class | Class A | Class B (Residential) | Class A | ✗ |
| Processing Core | Advanced ASIC | Spartan-6 FPGA | Standard MCU | Standard MCU |
| Storage Temp | −40°C to +85°C | −25°C to +125°C | −25°C to +125°C | −25°C to +125°C |
| Weight | 96.0g | ~85g | 85.5g | 72.4g |
| Release Year | 2024 (latest) | 2024 | 2022 | 2019 |
| Best For | Virtual production, broadcast, cinema-grade | 12-module cabinets, EMC Class B indoor | 8-module EMC Class A rental | 8-module general fixed install |
The NovaStar MRV412-N LED receiving card represents the peak of NovaStar’s mid-format receiving card engineering: 512×512@60Hz resolution, 18bit+ grayscale with 4× smoother gradients, hardware Color Management supporting Rec.709/DCI-P3/Rec.2020 cinema standards, 1-frame Low Latency for virtual production, 90° image rotation, individual RGB gamma correction, multi-batch brightness adjustment, Mapping 1.1 with full topology display, and Ethernet cable disconnection detection. For system integrators building the next generation of camera-facing LED walls, the MRV412-N delivers professional image processing at the receiving card — not the external processor.
Explore the full receiving card line: MRV336 (Spartan-6 FPGA) · MRV328 (EMC Class A) · MRV208 (General Purpose) · AT30 (Mini High-End) · MCTRL660 LED Controller · LED Screen Manufacturer