Huawei SMU11B - Page 11

Table 1-5 Pin denitions for the COM port
Pin Signal Description
1 RS485+ RS485 data +
2 RS485- RS485 data –
3 12V Power supply
4 RS485+ RS485 data +
5 RS485- RS485 data –
6 SCL
I
2
C clock
7 SDA
I
2
C data
8 GND Grounding
Figure 1-4 Pins in the FE port
Table 1-6 Pin denitions for the FE port
Pin
Signal Description
1 TX+ Transmits data over FE.
2 TX-
3 RX+ Receives data over FE.
6 RX-
4, 5, 7 and 8 NA -
SMU11B Site Monitoring Unit
User Manual 1 Description of Components
Issue 03 (2022-06-06) Copyright © Huawei Technologies Co., Ltd. 5