Agilent Technologies 8360B, User Manual, Page: 84 / 496

GPIB General
Information
Interconnecting Cables
Figure C-2 sho ws the sw ept signal generator rear-panel GPIB
connector and suitable cables, and describ es the pro cedures and
limitations for in terconnecting instrumen ts. Cable length restrictions,
also describ ed in Figure C-2 , m ust b e observ ed.
Instrument Addresses
Eac h instrumen t in a GPIB net w ork m ust ha v e a unique address,
ranging in v alue from 00-30 (decimal). The default address for the
sw ept signal generator is 19, but this can b e c hanged using the
NNNNNNNNNNNNNNNNNNNNNNN
My Adrs softk ey or rear panel switch as describ ed in the reference
c hapter (Chapter 2) under the \8360 Adrs" en try (the examples in
this section use 19 as the address for the sw ept signal generator).
Other instrumen ts use a v ariety of pro cedures for setting the address,
as describ ed in their op erating man uals, but t ypically either a rear
panel switch or a fron t panel co de is used.
GPIB Instrument
Nomenclature
A GPIB instrumen t is categorized as a \listener," \talk er," or
\con troller," dep ending on its curren t function in the net w ork.
Listener
A listener is a device capable of receiving data or commands from
other instrumen ts. An y n um b er of instrumen ts in the GPIB net w ork
can b e listeners simultaneously .
T alk er
A talk er is a device capable of transmitting data or commands to
other instrumen ts. T o a v oid confusion, a GPIB system allo ws only
one device at a time to b e an active talker.
Controller
A con troller is an instrumen t, t ypically a computer, capable of
managing the v arious GPIB activities. Only one device at a time can
b e an active con troller.
Programming the Sw ept
Signal Generator
The sw ept signal generator can b e con trolled en tirely b y a computer
(although the line PO WER switch m ust b e op erated man ually).
Sev eral functions are p ossible only b y computer (remote) con trol.
Computer programming pro cedures for the sw ept signal generator
in v olve selecting a GPIB command statement, then adding
the sp ecic sw ept signal generator (SCPI, Analyzer, or CI IL)
programming co des to that statement to ac hiev e the desired
op erating conditions. The programming co des can b e categorized
in to t w o groups: Those that mimic fron t panel k eystrokes; and those
that are unique, and ha v e no fron t panel equiv alen t.
1-56 Getting Started Programming