Sequoia Series    31 
3.5.3  Socket Port Number 
Now that a connection has been verified, you can develop your application code. If you are using one 
of the Microsoft environments, the Winsock protocol which is part of the Windows operating system 
can be used. Similar capabilities are supported on other operating systems. 
To use Winsock, your will have to specify the port number of the power source’s LAN interface. The 
port number determines the protocol for the communication. The power source uses ASCII characters 
and  instrument  SCPI  commands  for  remote  control.    The  IANA  registered  Port  number  for  the 
Instrument SCPI interface is 5025.  
TCP Remote port = 5025 
The port number is factory set to 5025. 
3.5.4  IP Ping 
You can also test the IP address from your Windows PC. An easy way to do so is to use the ping utility 
under MS DOS. To do so, bring up a DOS window using the start menu: 
Start>Programs>Accessories>Command Prompt) 
At the command prompt type 
ping <IP address>.  
This will send an IP ping request to the power source. For this to work, the power source must be 
turned  on  and  connected  to  the  same  network  as  the  PC.    Also,  the  power  source  interface 
configuration must be set to use a baud rate of 460,800. If everything is working it will look like this: 
 
Figure 3-3: Pinging AC Source LAN IP address.