1. Huidu R502 LED Display Cascading Receiving Card 256×256 Features: HD-R502 no need HUB, and been have 16PORT HUB75B. Functions same
with HD-R500
2. Huidu R502 LED Display Cascading Receiving Card 256×256 Mainly parameter：
| Working ways | Used in Sending card HD-A601/602/603 Series, HD-C10/C30series,
HD-A30/A30+ Series |
| Suitable Modules types | Indoor & outdoor full-color & single/dual color module
Support MBI5041/5042、MBI5050、MY9221、MY9268 etc PWM |
| Scan mode | Static, 1-32 scan randomly |
| Communication | Gigabit Network |
| 1pcs of receiving card support areas | Outdoor: 256W*256H Indoor: 512W*128H
The highest height is 512H.The longest width 512W |
| Receiving cards sequence | Sequence randomly, and it can recognize the sequence by software or set up sequence by hand.
Receiving card connected speed by nanoseconds |
| Gray scale | 0-65536 |
| Smart set | Smart set by few simple steps, through display routine setting ,it could suit almost different PCB routine |
| Play contents | Play video、animation、picture、text、excel、PPT、time、counter etc |
| Test functions | It have self test button, could test modes of red、green、blue、white、gray、oblique line、grid、spots etc |
| Blanking Circuit | Support |
| Communication distance | 150m use CAT5E OR CAT6 Cable (From Sending card to Receiving card) |
| Port | 2pin 5V Power x1,Gigabit portX2，75B HUB portx16 |
| Voltage | 4V-6V |
| Working temperature | 40℃–85℃ |
3. Connected ways（Here used HD-A602 Sending card）
4. Data interface description:
①：Power Port: 4V-6V
②：Gigabit Port: Connected sending card HD-A601/602/603 or HD-C10/C30/or HD-A30/A30+ etc.
Two Ports is same
③：Testing button: after adjusted display working normal, then press by sequence, it come out color red 、green、blue、white、slash.(Note: just software saved parameter same with display screen, and pull out the Network cable, Then press the testing button is affective)
④：Light D1 normal status is flicker, showed controller working normal；
Light D2 normal status is flicker fast, showed recognized the Gigabit and receiving data.
⑤：16 PORT of HUB75B: Connected LED module Port.
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