The Hewlett-Packard 82169A is an HP-IL to HP-IB interface.
This interface enables a computer or calculator with an HP-IL port to control devices on HP-IB. It is also possible for the HP-IL computer to act as a device on HP-IB if the controller is on the HP-IB side. If the interface is put into "mailbox" mode, it enables two controllers to talk to each other.
To control HP-IB devices (such as test equipment, printers, plotters, etc.), you will want to set all DIP switches to off and place the 82169A interface as the last device on the HP-IL loop. Make sure that the address of each connected HP-IB device is greater than the number of devices on the HP-IL loop. Then you can simply use the HP-IB address from the HP-IL side to talk to that device and the interface will translate everything for you.
- HP 82169A HP-IL/HP-IB Interface Owner's Manual (PDF, 2.8MB)