Hp·IS Fundamentals
Controllers, Talkers, and Listeners
Secondary addresses may be in the range
0
to
30.
The secondary commands
transmitted are fonned by adding the secondary address to the base value
96
and transmitting the byte with ATN true.
Extended addresses can be used, for example, to access a specific
VO
card
within an instrument that allows multiple
110
cards, such as a
VXI
cardcage.
For example,
if
you
are
connecting to a
VXI
card cage through an
HP
E
1405/6
Command Module or equivalent. the primary address passed to
iopen
corresponds to the address of the Command Module. and then a
secondary address must be specified to select a specific instrument in the
card cage. Secondary addresses of
0,
1, 2, . . . 30
by default correspond to
VXI
instruments al logical addresses of
0,
8, 1 6
.
.
.
.
240,
respectively. For
example, the
iopen
address string
"hpib7 , 1 6 , 0"
would specify the
VXI
instrument at logical address
0
(usually the Command Module), accessed
through a Command Module at address
16
on the
HP·m
bus.
3 4
A
Summary of Contents for HP 82335
Page 2: ...HP 82335 82340 and 82341 HP IB Interface Installation Guide for HP 110 Libraries ...
Page 3: ...11 ...
Page 12: ...1 Introduction ...
Page 17: ...Introduction Environmental Specifications Notes 8 Chapter ...
Page 18: ...2 Hardware Installation ...
Page 34: ...A l HP IB Fundamentals ...
Page 48: ...B Using Fast Talker Mode with the HP 82341 ...
Page 50: ...Index ...
Page 53: ...Index 44 ...