How to connect two GPIB？

[xiaochouyu]

   I use Agilent 4352b（a Signal Analyze） and 8664A（a Signal generator）.4352b connect  8664A through a GPIB.

  Now I want to connect 4352b through Keysight 82357B （a GPIBtoUSB converter） .

  I search out some GPIB port ：

  GPIB0::16::INSTR

  GPIB0::17::0::IINSTR

 GPIB0::17::1::IINSTR

 GPIB0::17::13::IINSTR

  GPIB0::17::14::IINSTR

  GPIB0::17::15::IINSTR

  GPIB0::17::16::IINSTR

   but they all can't connect ！

  why?

[Albert.Geven]

Why do you want a second GPIB interface. One GPIB interface can handle up to 15 instruments but two should always work. Just use a GPIB cable to connect the two instruments and you are done.

[xiaochouyu]

thank you 

I think you may have some misunderstandings, I use 2 instruments instead of two interfaces/ports/GPIB .

Computer——Signal Analyze ——Signal generator ，They are connected to each other.

Signal Analyze ——Signal generator，Analyze must connect to Generator to work, and they're already connected（This is the case at the factory）.

Now I want to connected Signal Analyze.

[crossrulz · Accepted solution]

Is the Generator or the Analyzer set up as the GPIB master?  You can only have 1 master on a bus.  Typically, if there is a "master" GPIB connection on an instrument, there is a second GPIB interface in order to accept commands from a PC.

[xiaochouyu]

thank you

It seems that I can't connect to Analyzer. Because it's going to control Generator