Keithley 2001 Operator's Manual page 160

IEEE-488 Reference
cáÖìêÉ=QJN
IEEE-488 connector
be stacked to allow a number of parallel connections to one
instrument. Two screws are located on each connector to en-
sure that connections remain secure. Current standards call
for metric threads, which are identified with dark colored
screws. Earlier versions had different screws, which were
silver colored. Do not attempt to use these type of connectors
on the instrument, which is designed for metric threads.
A typical connecting scheme for a multi-unit test system is
shown in cáÖìêÉ=QJO=. Although any number of connectors
could theoretically be stacked on one instrument, it is recom-
mended that you stack no more than three connectors on any
one unit to avoid possible mechanical damage.
In order to minimize interference caused
by electromagnetic radiation, it is recom-
mended that only shielded IEEE-488 ca-
bles be used. The Models 7007-1 and
7007-2 shielded IEEE-488 cables are
available from Keithley.
4-2
NOTE
Instrument
cáÖìêÉ=QJO
IEEE-488 connections
Connect the Model 2001 to the IEEE-488 bus as follows:
1. Line up the cable connector with the connector located
on the rear panel. The connector is designed so that it
will fit only one way. cáÖìêÉ=QJP= shows the location of
the IEEE-488 connector on the instrument.
cáÖìêÉ=QJP
IEEE-488 connector location
2. Tighten the screws securely, but do not overtighten
them.
3. Add additional connectors from other instruments, as
required.
4. Make certain that the other end of the cable is properly
connected to the controller. Most controllers are
equipped with an IEEE-488 style connector, but a few
may require a different type of connecting cable. Con-
sult the instruction manual for your controller for the
proper connecting method.
The IEEE-488 bus is limited to a maxi-
mum of 15 devices, including the control-
2001-900-01 Rev. K / August 2010
Instrument Instrument
Controller
IEEE-488
NOTE