General Information
Model 8642A/B
1-3. WHERE TO FIND SAFETY CONSIDERATIONS
This product is a Safety Class I instrument; that is, one provided with a protective earth terminal.
Before operating or servicing the Signal Generator, service personnel should familiarize
themselves with the safety markings on the Signal Generator and the safety instructions. Safety
information pertinent to the task at hand (that is, information regarding installing, operating,
performance testing, adjusting, or servicing the HP 8642A/B) is found throughout this manual.
Refer to the Safety Considerations pages found at the beginning of Volume I for a summary of
that information.
1-4. HEWLETT-PACKARD INTERFACE BUS (HP-IB) ENABLES REMOTE CONTROL OF
THE INSTRUMENT ^QQ^
The HP 8642A/B Signal Generator has a Hewlett-Packard Interface Bus (HP-IB) interface and
can be used with an HP-IB compatible controller for test system applications. The Signal
Generator is fully programmable via the HP Interface Bus. HP-IB is Hewlett-Packard's
implementation of IEEE Standard 48
8
and the identical ANSI Standard
MC1.1.
(Refer to the
HP-IB portion of Section III for more complete details.)
Selecting the HP-IB Address
The Signal Generator's HP-IB address is set to 19 at the factory in both internal memory and an
internal switch located inside the instrument. The decimal equivalent of the
5-bit
address code
can be displayed on and changed from the front panel. Refer to HP-IB Address in the HP-IB
portion of Section III for information regarding changing the HP-IB address.
HP-IB Capabilities
This Signal Generator's HP-IB capabilities are defined by the following list of interface
functions. For more information, refer to page 3-9.
Source Handshake
Acceptor Handshake
Talker
Extended Talker
Listener
Extended Listener
Service Request
Remote Local
Parallel Poll
Device Clear
Device Trigger
Controller
Driver Electronics
SHI
AH1
T6
TEO
L3
LEO
SRI
RL1
PPO
DC1
DTO
Cl
C2
C3
C28
E2
(Complete capability)
(Complete capability)
(No talk only mode)
(No capability)
(Complete capability including
(No capability)
(Complete capability)
(Complete capability)
(No capability)
(Complete capability)
(No capability)
(System controller)
(Send IFC and take charge)
(Send REN)
(Send interface messages)
(Three-state drivers)
Listen Only)
1-2
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