Agilent Technologies 4338B, Operation Manual

Page: 91 / 228

4338B Rear P anel
There are no restrictions on how the cables are connected together . However , it is
recommended that no more than four piggyback connectors be stacked together on any one
device . The resulting structure could exert enough force on the connector mounting to
damage it.
Every GPIB device has a unique address for identication. The available GPIB addresses are
the integer values 0 to 30. Any device on an GPIB bus must have a unique address otherwise
there will be bus contention as devices with the same address try to use the bus at the same
time .
Every GPIB device must be capable of performing one or more of the following interface
functions:
T alker A talker sends device-dependent data when it is addressed to talk. In an GPIB
system, there can be only one active talker at any given time .
Listener A listener receives device-dependent data when addressed to listen. In a GPIB
system, there can be any number of active listener at any given time .
Controller A controller manages the operation of the bus and addresses talker's and
listener's . In an GPIB system, there can be only one active controller at any
given time .
T able 3-3 lists the 4338B's GPIB capability and functions . These functions provide the means
for an instrument to receive , process , and transmit commands , data, and status over the GPIB
bus .
T able 3-3. GPIB Interface Capability
Code Function
SH1 Complete Source Handshake capability
AH1 Complete A cceptor Handshake capability
T5 Basic T alker; serial poll; unaddressed if MLA; T alk-Only
L4 Basic Listener; unaddressed if MT A; no Listen Only
SR1 Service Request capability
RL1 Remote/Local capability
DC1 Device Clear capability
DT1 Device Trigger capability
C0 No Controller capability
E1 Drivers are open-collector
Function Reference 3-19
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com