Operation
Model
8642A/B
~
HP-IB
Capabilities
(cont'd)
Table
3-1.
HP-iB
Capability
Reference
Table
HP-IB
Related
Interlace
Capability
Applicable
Response
Commands
Functions·
and
Controls·
Data
Yes All front-panel functions, special functions, and remote-
MlA
T6
only functions are programmable (except Knob
MTA
l3
Rotation). The Signal Generator can send status byte,
EOI
AHl
message, and setting information. The front-panel
SHl
lSTN
and
TlK
annunciators turn on
as
appropriate
when the instrument is addressed.
Trigger No
The Signal Generator does not have a device trigger
GET
DTO
capability.
Clear
Yes
The Signal Generator responds equally
to
DCl
and
DCl
DCl
SDC bus commands. The Clear capability does not re-
SDC
set instrument parameters.
Remote Yes The Signal Generator's remote mode
is
enabled when
REN
RLl
the
REN
bus line
is
true. However, it remains
in
local
MLA
(i.e., the keyboard is active) until it is first addressed
to listen. The output signal is unchanged when the
Signal Generator enters the remote mode. The front-
panel RMT annunciator turns on when
in
remote mode.
Local
Yes The Signal Generator returns to front-panel control
GTL
RLl
when it enters the local mode. The output signal is
unchanged. Responds either
to
the GTL bus command
or
the front-panel LOCAL key. The
lOCAL
key will not
work
if the instrument
is
in
the Local Lockout State.
Local
Yes
Local Key
is
disabled during Local Lockout so only
LLO
RLl
Lockout the controller
or
the POWER switch can return the
Signal Generator to local.
Clear
Lockout/
Yes
Generator returns to local and Local Lockout
is
no
REN
RLl
Set Local
longer true when the
REN
bus lines goes false.
Pass Control/
No The Signal Generator cannot pass or take control
of
ATN
Cl
Take Control HP-IB. However it does have limited control capability
IFC C2
that is intended
for
servicing the instrument. This con-
C3
trol capability
is
accessed with Service Special
C28
Functions.
Require Yes The Signal Generator sets the SRQ bus line
true
if
SRQ
SRl
Service
one
of
the following conditions exists and it has been
enabled by the RQS mask
to
send the message
for
that condition: Parameter Changed, Error, Ready,
Local/Remote, Execution Error, Hardware Error.
or
End of Sweep.
Status
Yes The Signal Generator responds to a Serial Poll Enable
SPE T6
Byte (SPE) bus command by sending
an
8-bit byte when
SPD
addressed to talk. Bit 6 (RQS bit)
is
true if Signal
MTA
Generator had sent the Require Service Message.
Each bit requires different conditions for clearing.
Status Bit
No The Signal Generator does
not
respond to a parallel
ATN
PPO
poll.
EOI
Abort
Yes
The Signal Generator stops talking or listening.
IFC T6, L3
'Commands,
Control iines and Interface Functions are defined in IEEE Std 486 (and the identical ANSI Standard MC1.1). Knowledge
of
these might
not
be necessary if your controller's manual describes programming in terms
of
the twelve HP-IB Messages shown in the left column
Complete
HP-IB
capability as defined in
IEEE
Std
488 (and the identical ANSI
Standard
MCl.l)
is:
SHl.
AHl,
T6. TEO. L3,
LEO.
SRI.
RLI.
PPO.
DCl.
DTO,
CI,
C2,
C3, C28. E2.
3-10
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