Keithley 2001 User Manual

IEEE-488 Reference
4-2
A typical connecting scheme for a multi-unit test system is
shown in Figure 4-2. 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.
NOTE
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.
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. Figure 4-3 shows the location of
the IEEE-488 connector on the instrument.
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.
NOTE
The IEEE-488 bus is limited to a maxi-
mum of 15 devices, including the control-
ler. The maximum cable length is 20-
meters, or two meters times the number of
devices, whichever is less. Failure to ob-
serve these limits may result in erratic bus
operation.
Custom cables may be constructed by using the information
in Table 4-1 and Figure 4-4. Table 4-1 lists the contact as-
signments for the bus, and Figure 4-4 shows the contact con-
figuration.
F
igure 4-1
I
EEE-488 connector
F
igure 4-2
I
EEE-488 connections
Instrument
Controller
Instrument Instrument
F
igure 4-3
I
EEE-488 connector location
IEEE-488

Keithley 2001 Specifications

General

Brand	Keithley
Model	2001
Category	Multimeter
Language	English