HIKVISION DS7208HVI-SN Product/Maintenance Manual - Page 11
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- 1. Ds7208Hvi-St/Sn Equipment Physical Interface
- 2. Ds7208Hvi-St/Sn Equipment Internal Structure
- 3. Ds80061 Mainboard Hardware Principle Diagram
- 4. Ds80061 Mainboard Hardware Modules Diagram
- 5. Ds80061 Mainboard Hardware Module Introduction
- 6. Network Module
- 7. Power Supply Module
- 8. Ds80061 Mainboard Failure Analysis
SATA
power
interface
SATA interface
5.6. RS485 Module
RS485 main control chip:6LB184, PIN 6, 7 were TX +,TX-,the difference
voltage close to 5 V
TVS（B03NC）：B03NC（BA2、BA7）protect the sending end (TX +, TX-R +,
R-)
Thermistors (JK250) : JK250 (RPT1/2) protect the sending end (TX +, TX-R
+, R-)
RS485 module part:
BD9329 （U1）
JK250（RPT1/2）
B03NC （BA2、 BA7）
6LB184