User Manual

3. Ports Introduction (P 1280 / 1285) 
Figure 0-1 Ports of the Oscilloscope (take P 1285 for instance) 
1.  RS-232C Port (optional) 
2.  USB port: Supply power by PC USB or the adapter; communicate with PC 
3.  LAN port (optional): Network port which can be used to connect with PC 
4.  Probe Compensation: Measurement signal (3.3/1KHz) output 
5.  MULTI input, trigger output or Pass/Fail output and EXT trigger input 
6.  Signal input of Channel 2 
7.  Signal input of Channel 1 
Note: (only P 1280/1285) If you use LAN port to communicate with PC, the oscilloscope must be 
powered by the adapter.  
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