HP 1630A Operating And Programming Manual page 182

Connecting the HP 1630 and
HP 1631 logic analyzers to
minicomputers is facilitated through
minicomputer interfaces for three of the
most popular minicomputer buses:
HP 10275A PDP-11 UNIBUS
U
Interface
HP 10276A LSI Q-BUS
C
Interface**
HP 52126A MULTIBUS
Interface ***
The interface boards plug into the
respective buses. A ribbon cable
extending from the board can either be
connected to the logic analyzer, or for
convenience through the HP 10320A
user-definable interface module with an
HP 10269B probe interface .
Switches on each interface board
qualify information routed to the logic
analyzer or preprocessor by the selected
activity type . Any combination of
monitored activities may be selected for
a logic analysis measurement .
Minicomputer Interfaces
For The Three Most
Popular Minicomputer
Buses
Interf -,ag to n , - mpz , rs is simplified with HI's
~~
A
dibld HP 10321user-efnae moues.
the H1' 10320'A and
Specifications
* UNIBUS is a registered trademark of
Digital Equipment Corporation.
** Q-BUS is a registered trademark of
Computer Activity
HP 10275A HP 10276A
HP 52126A
Digital Equipment Corporation .
*** MULTIBUS is a registered
Read
X
X X
trademark of Intel Corporation .
Write
X
X X
Interrupt vectors
X X
DMA transfers
X X
Refresh X
1/O transfers X
Bus Loading
Power Requirement
HP 10275A
1 unit DEC load (type 956, P/N DEC
0 .9 A at + 5 Vdc (nominally 0.55 A),
8640 bus receiver) with max 12 pF
supplied by the minicomputer .
shunt capacitance at connector ;
nominally, 6 pF .
HP 10276A
Same as HP 10275A .
As an interface, 0 .5 A nominal and
0 .9 A max; as a terminator, 1 .0 A
nominal and 1 .6 A max . Power
supplied by the minicomputer .
HP 52126A
1/2 of a standard TTL load .
1 .3 A max at +5 Vdc, nominally 0.8 A.
Power supplied by the minicomputer .