User`s manual

36 Chapter 1
O:\Manuals\E6380A_Progguid\Book\Usehpib.fm
Using HP-IB
Getting Started
Control Annunciators
The letters and symbols at the top right corner of the display indicate
these conditions:
• R indicates the Test Set is in remote mode. The Test Set can be put
into the remote mode by an external controller or by an IBASIC
program running on the built-in IBASIC controller.
• L indicates that the Test Set has been addressed to Listen.
• T indicates that the Test Set has been addressed to Talk.
• S indicates that the Test Set has sent the Require Service message
by setting the Service Request (SRQ) bus line true. (See “Status
Reporting” on page 121.)
• C indicates that the Test Set is currently the Active Controller on the
bus.
• * indicates that an IBASIC program is running.
• ? indicates that an IBASIC program is waiting for a user response.
• - indicates that an IBASIC program is paused.