HP 98034 Service Manual
Series 9800 Desktop Computers
HP 98034
Installation and Service
FliDW
a!~
HEWLETT
PACKARD
r/i~
~t:.
HEWLETT
PACKARD
Warranty Statement
Hewlett-Packard
materials
Computer Division
warranty
Hewlett-Packard will ,
which proves to be defective during the warranty period. This
warranty includes labor , parts, and surface travel costs, if any.
Equipment returned to Hewlett-Packard for repair must be
shipped freight prepaid. Repairs necessitated by misuse
equipment, or by hardware, software, or interfacing not provided
by Hewlett-Packard are not covered by this warranty.
NO OTHER WARRANTY
INCLUDING,
OF MERCHANTABILITY
PURPOSE.
CONSEQUENTIAL DAMAGES
For other countries, contact your local Sales and Service Office
•
to determine warranty terms.
applies for ninety (90) days from date of delivery.·
products
and
workmanship
products
BUT NOT LIMITED TO,
HEWLETI-PACKARD SHALL NOT
are warranted against
. For
Hewlett-Packard
sold
in
the U.S.A. and Canada, this
at
its option, repair or replace equipment
IS
EXPRESSED
THE
AND FITNESS
IMPLIED WARRANTIES
FOR
defects
OR
IMPLIED
A PARTICULAR
BE
LIABLE
in
Desktop
of
the
FOR
,
98034 HP-IB
Interface
Installation
Manual Part No. 98034-90001
Microfiche
and
No.
Service
98034-99001
Manual
Hewlett-Packard Desktop Computer Division
3404 East Har mony Road, Fort Collins, Colorado 80525
Copyright
by
Hewle
tt
Packard Company 1976, 1
981
ii
Printing History
The manual printing
changes
changed
changes
Feb
when a
new
page will
when extensive technical
ru
ary 1981
...
First Edition. Rep la
date
and part
ed ition is printed,
be
indicated
by a revision date at the bottom. The manual part
number
changes
ces
indicate its current edition. The printing
incorporating all
cha nges since the last edition. Each
are made.
the 98 034A HP-IB Interface Manual, 98034-90000 .
date
number
NOTICE
The information contained
HEWLETT-PACKARD MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MATERIAL , INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Hewlett-Packard shall
connection with the furnishing, performance or use of this material.
This document contains proprietary information which
document may be photocopied, reproduced or
Hewlett-Packard Company.
not be liable for errors contained herein or for incidental or consequential damages
in
this document
translated
is
is
subject to change without notice.
protected
to
another program language without the prior written consent of
by
copyright. All rights are reserved. No part of this
in
Table
of
Contents
iii
Chapter
Chapter
1:
General
Introduction
98034A
98034B
I/O ROM
Technical
Bus
Functions
Data Transfer Rate
2: Installation
Unpacking
Installation
Interconnecting
Cable
Hardware
Low EMI
Select
Removing the Interface Covers.
Changing
Enabling
Parallel Poll
Code.
Interrupt
System Controller
Information
(Plastic Case) .
(Metal Case)
Cards
and
Length
Cable
Priority
Talk/Listen
Switches
.
Specification
and
Messages ....
......
Inspection
Cables
Restrictions ...........
Con version Kit.
Adapter ........
Addres
Table
..
.
. , . .
.. , ..
, . , . ,
,
of
Contents
. . . . . . . . 1
.
.......
. . . . . . . . . 1
.
........
s.
...
.
.
...
. .... , ,
....
.
, , , . . . ,
. . . . . . .
................
. . . . .... .
...... , ...
..
. . . . . . .
ses
...
...
. . .
...
. .....
. .
........
.
....................... .
..
.......
...
.
. .......... ..
. .
.......
...... ..
.....
.. , .......
...
....
,
...........
. .
..........
. . . . .
........
. . .
...
'. , ...
...
, . .... 8
....
...
...
1
...
2
. .
..
2
.
..
4
6
· , 7
, ... 7
...
8
9
...
9
· . .
9
, 10
.
10
·
. , , 12
, . 13
. . 13
Chapter
3:
Introduction
Functional Test
Replaceable
Calculator
Bus Lines
Data Lines
Control Lines (ATN , IFC, SRQ, EOI ,
Transfer Lines (NRFD,
Data Transfer
Theory of
Select
I/O
Calculator
Calculator
Control
Processor
HP-IB
HP-IB
Service
.. , ....
Assemblies
I/O Lines
and
Operation
Code
Register
Logic
Output
Address
. . ,
.
...
,
Timing.
(D101
Decoder
I/O Data Registers
Interrupt
Interrupt
. . . . . . . . . . . . . . . . . . . . . . . , 19
-
8)
, . ,
...
NDAC ,
....
, . , . , . . . . . . , . .
. .... . , , , , .....
Decoder
. .
Data and Control Bus
and Switch . , ,
and
Logic
Logic
Register.
Calculator
.,
...
. . . . ...........
, ,
......
and
...
. . . .
, . .
...
and
DAV) , . . .
...
..
.......
Command
............ ...
..
, . . . . . . . , ,
...... , ...
Latches.
, . , . , . . . . . . . . .
REN)
..
. . . . . . . . . . . . , . 20
, .
..
, .
....
........
, . , . . . . . . . . .
..
, . ,
..
. . . , .
Register
. .
,
.......
. . . . ..... ..
. ,
. . . .
...........
...
. . .
.....
.........
.
.............
. .
.. , ....
. .... ......
............ , ..
..
...
.. , ..
.....
..
........
....
.
. . .
........
, ... . . ,
. . . . ......
. , .
..
. 15
· . 15
· . 18
..
19
..
. 19
..
19
. . , . . , , 20
, . 22
22
..
23
...
23
24
, .
....
24
..
25
, . , 25
....... , , 25
iv
Table
of
Contents
Controlling
98034A
98034B
Replaceable
Circuit
Figures
1 .
2.
3.
4.
5.
6.
7.
8.
9.
10
.
11
.
Data
Input
Multiplexer
HP-IB
Transceivers
Parallel Poll
Initialize
Send
Receive
Read I nterface
Interrupt
Send
Request
Parallel
Interface
Interface
Diagrams
HP-IB
Standard
Low
Opening
HP-IB
98034
Interface
Interrupt
98034
98034
98034A
Logic
Circuit..
the
Interface
Data.
Interface
. . . . . . . . . . . . . .... . .... . . .... . ...........
Data
Operation ...
Service. . .........
Poll.
Parts Lists
Cable
HP-IB
EMI
Cable
the
Three-Wire
Simplified
Status
Status
Detailed
Circuit
Circuit
......
. . .... . . . . . . . . .
.... . . . . . . . . . . . . . . . . . . . . . . . ... . . .... . .
. .
. .
Status . . .... . . . . .....
...
Messages
. . . . . . . . . . . . . . . . . . . . . . .
Assemblies
Assemblies ...... . .... .... . . . . .... . . . . . . . . . .
..
Pinouts .
Cables ... . . .....
Adapter.
Interface
Handshake
Block
Bytes.
Byte.
Block
Diagram
Diagram
.....
..
........
.......................
.....
..
. .... . .... . .
...
.......
. .
....................
....... .....
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Case.
Diagram.
. . . . . . . . . . ...
. . . . . . . . . . .
Diagram ......
. . .... .
(Rev . B) . ................
. . . . . . . . . . . . . . . . . .... . . . .
.. ..
. . .
.. ..
. . . . . . . .... . ........ . . . . . . . . . ....
. .... . .
. . . . . ....... . .
. . .
(Timing
...........
. .
...
. . . . . . . .... . . .... .
.
..
......
. . .........
....
...
. . .... . . . ....
. . .
.. ..
......
.. ..
. . .... .
Diagram) ...... .
.
...
. ....... . . . . . . ....
.......
...
. .... . . . . . . .... . . . .
...
. . . ........
. .
.......
. . .
....
...
...
. . . .
..
. .....
. . . .
. . . .
. . .
...
. .
....
.............
. . .... . . . .... .... . .
. . . .
......... . . . .... .
...... . .
....
. . .... . . .... . ........ 33
. .
....
. .
...
...
.
. . . . . . .
...
. .
...
...
.
. .... .
...
...
.
.. ..
. . . . .
..
. . . .
...
........
. . . .
......... . . . .
....
. . . .
. .
...
. . .
......
. . . ....
...... . . . . . .
.
. . .... 26
..
......
..
..
· . 28
.....
. . . . ....
..
..
. . .
· . 32
· . 34
.
...
34-38,41
39,43
...
. . . . 3
...
...
..
...
. .
..
...
. . . .
...
. .
...
.......
....
· . 26
26
26
27
. 28
29
31
32
32
35
. 8
9
11
21
22
30
31
39
43
Tables
1 .
2.
3.
4.
5.
6.
7.
8. 1/0
9.
10.
HP-IB
Signal
98034A
HP-IB
98034
Available
Replaceable
Calculator
Replaceable
98034A
Bus
Messages. . .....
Factory
Bus
Register
Replaceable
Lines ...
Functions
Settings.
Addresses
Assemblies
1/0
Lines
. . . ......... . . . . . . . .... . . .... . . ....... . . . . . .....
Assignments.
Parts ...
......
..............
Parts (Rev. B) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. ......
Available
.. ..
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
and
Codes
.....
...
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .
.....
........ .....
. .... . ....
.
. . . . ....... . .... . ....
. . . ....
......
...
.........
. . .... .............
.. ..
......
. . . . . . . . . . . .
...
. . . .
...
. . . . .... . . .
. . .
. .
.. ..
.......
...
...
. . .
...
. 3
.....
. 4
. . .... . 5-6
. . . . . .
. . .
.. . .... 41
..
.. ...
..... 18
. . . . .
..
..
..
34-38
12
19
28
7
Chapter 1
General
Information
Introduction
The HP98034 HP-I
HP
Interface Bus. The interface conforms to the
top computer to perform a wide variety of operations via
ter, desktop computer and
appropriate
manual
This
description of HP-IB operations
98034A Interface Manual, 98034-90000. All previous versions of the 98034A Interface are
covered here.
98034A (Plastic Case)
The 98034A Interface was revised (rev. E and later) to improve the interface reliability and
interrupt service. This revised version of the
sktop Computers.
both versions of the
B Interface connects
calculator are used interchangeably in this manual, and refer
HP
9800-series computer .
describes
how to install and service the 98034 interface.
is
Replacement parts, component locators, and logic diagrams are shown for
98034A .
given
an
HP
desktop computer (9825, 9835 or 9845) to the
IEEE
Standard 488-1978', allowing the desk-
an HP-
in
the following pages. This manual replaces the
98034A
is
compatible with 9835 and 9845 De-
IB
system. The terms compu-
In
addition , a general
to
an
NOTE
The unrevised version of the 98034A (rev. D and prior) wi
function properly with 9835 and 9845 Desktop Computers.
980348
The 98034B Interface is functionally identical to the 98034A. The metal-case 98034B Interface
provides reduced electromagnetic radiation interference
nent
98034B
, IEEE Slanda
mechanical elements of
(Metal Case)
(EM I). Logic diagrams and compo-
locators are identical to the 98034A rev. E interface. A replacement parts table for the
is
provided.
rd Digital
Interface
for P
Ihe HP-IB syslem
rogrammab
le Inslrumentat ion. This
standard
descr
ll
not
ibes Ihe functional. el
ectrica
l.
and
2 General Information
Field
upgrade
connections for the
EMI
is
required. Contact your local
kits are available for desktop computers
98034B Interface. The upgrade kit need only be installed when reduced
HP
Sales and Service office for details.
EMI Upgrade Kits
Low
to
provide the necessary ground
Computer
9825
9835
9845
Upgrade Kit
98273A
98373A
98473A
I/O ROM Cards
The
I/O ROMs
For example , the General
instrument at a time
control of bus functions. After the interface is connected as described
the appropriate I/O
plugged
on
ROM
into the calculator determine which bus operations can be performed.
I/O
ROM
for the
the bus. Use of the Extended I/O
manual for all bus-control operating instructions.
HP
9825A Calculator provides control of one
ROM
, however, enables complete
in
Chapter 2, refer to
Technical Specifications
The bus card's electrical characteristics are listed below. For complete details on HP-IB
electrical , mechanical, and timing requirements, refer to
Select Code
The bus card is preset to select code 7 at the factory. A switch permits changing the setting, if
necessary.
IEEE
Standard 488-1978.
Addresses
The bus card is preset to
pairs of talk/listen addresses can be switch-selected on the card.
Bus
Signal Lines
The bus consists of 16 signal lines as follows:
ASCII talk address "U" and listen address "5".
The pin-outs on a standard HP-IB cable
are shown below .
Anyone
of 30 other
General
Information
3
Table 1.
0101
•
HP-IB Signal Lines
Data Input/Output 1
•
• •
•
0108 Data Input/Output 8
DAV
NRFD Not Ready for Data
NDAC Data Not Accepted
IFC
ATN
SRQ
REN
EOI
Data Valid
Interface Clear
Attention
Service Request
Remote Enable
End or Identify
•
SHIELD
.,.
soo
>F
e
NOA
C
NAFO
O.y
.00
0"'"
010'
000.
9'OUndon
,"
I.,
tac.e~'
;TN
SAO
rc
d
NOA
t
NIII'D
OEN
0107
0006
010'
Figure 1. HP-IB Cable Pinouts
Logic Levels
All signals use negative-true logic
(lOW
= logical
1)
•
High >2.
4V
Low <O.4V
+5V
Line Termination
Each of the 16 bus signal lines
Line Drivers
is
terminated as shown
here.
Kn
6.2Kn
t-
Each of the signal lines has a driver circuit with the following characteristics:
Type:
Output Voltage Low State:
Output Voltage High State:
Open Collector
< 0.4 V
>2.4
({t
48 mA
V ({i - 5.2
mA
Line Receivers
Each of the signal lines
is
received with a circuit having the following characteristics:
Hysteresis:
Low State:
High State:
VI
pos. Negative
Positive Threshold voltage 2.0 V
VI
neg . .,.0.4 V
Threshold voltage VI neg.
~V
~0.6
I
pos.
V
Cable Length
A 4-meter cable
is
supplied with the card. Also see "Cable Length Restrictions"
HP
-IB
in
Chapter 2.
Operating Temperature
o - 55° C
Power Requirements
The
calculator supplies all power for the card.
4
General
Information
Bus Functions and Messages
The following table lists the HP-IB functions and the capability available with the bus interface.
A
complete description of these interface functions can be found
1978.
Table
2.
Bus Functions Available with the 98034
in
the
IEEE
Standard 488-
Function
SHl
(Source Handshake)
AH
1 (Acceptor Handshake)
T6
(Talker)
L4
(Listener)
SRl (Service Request)
RL¢ (Remote-Local)
PP2
(Parallel Poll)
Implementation
Complete Capability.
Complete Capability.
Basic Talker.
Serial Poll.
Unaddress if my listen address (MLA).
Basic Listener.
Unaddress if my
Complete Capability .
Not Implemented .
Omits capability
talk address (MTA).
of being configured by controller.
DCl
(Device Clear)
DT$1
(Device Trigger)
C1
,2,3,4,5 (Controller)
Complete Capability.
Not Implemented.
System Controller.
Send Interface Clear (IFC
Send Remote Enable (REN).
to
Respond
Send Interface Message.
Receive
Pass Control.
Parallel Poll.
Take Control Synchronously.
Service Request (SRQ).
Control.
).
The
interface
generate
certain
automatically
Here
as
details
Message (command or line) Description
calculator
is a
described
.
and
messages
I/O
, as
required
complete
in
previous
calculator
for
controlling
ROMs
, to
list
of
bus
HP-IB
I/O
ROMs
the
. In
many
simplify
messages
manuals.
Table
determine
bus. Some
cases
, the I/O ROM
bus
operation
and
their
Refer to
3.
HP-IB Messages
how
these
functions
functions
for
corresponding
the
are
and
interface
the
user.
appropriate
not
available
bus
I/O ROM
General Information
are
implemented
to
handle
command
manual
the
user
the
functions
or
line
for
5
to
with
name
more
Data
Tr
igger (GET)
Clear
(OCl
or
Remote (REN)
local
(GTl)
local
lockout
SOL)
(LLO)
Transfer instrument-dependent informati
and one or more listeners.
ming informati
Signals a group of selected devices
itiate a set of device-dependent actions .
Causes
power-up state
es
Enabl
ers and device characteristics
messages.
Causes selected instruments
panel)
Prevents local (front or
tions.
on
or data readings.
an
instrument to be initialized
(a
certain range. function, etc.)
remote operation of all devices, allowing paramet-
control.
It may be instrument program-
to
to
be programmed via data
to switch
rea
r panel) control of instrument func-
on
between a talker
simultaneously i
to
a predef ined or
to
local (front or rear
n-
Clear
Lockou t/Local (REN)
Require Service
Status Byte
(SRQ)
(Continued)
Removes
all devices
note.
Indicates a device's need for interacti
Transfers a byte
One bit indicates whether or not the device
ing the require service message. The other 7 bi
indicate device-dependent status.
all devices from Local Lockout mode and causes
to
revert
to
manual contro
(8
bits) of status information
l.
See
on with
is
the controller.
currently send-
the following
to
a listener .
ts
(optional)
6
General
Information
Table 3. HP-IB Message (cont.)
Message (command or line)
Status
Bit
Control (TCT)
Pass
Abort (IFC)
When
the 9825 Calculator
automatically outputs
Description
Transfers a
be
may
the controller.
Passes bus controller responsibilities from the current
troller
role.
Halts all
back
pass
single bit of device-dependent status. which
log ically combined with other Status Bit messages to
to a device which can assume the bus supervisory
bus operation and causes control
to the system controller.
to
unconditionally
NOTE
is
the
system controller. pressing 8
the
Abort and Clear Lockout/Local messages.
con-
The
98034 Interface transfers data
second.
talker and listener(s)
The
actual I/O rate can be considerably slower. however. and
on
line at any given time.
actual data rate.
Data Transfer Rate
at
the rate of about
The
45
slowest device always determines the
Kbytes (8-bit characters) per
is
determined by the
Chapter 2
Installation
Unpacking
If the shipping carton
unpacked. Inspect the interface for damage. If the interface
electrical specifications, immediately notify the carrier and the nearest
office (offices are
material for the carrier's inspection. The sales. and service office will arrange for the repair or
replacement of your interface without waiting for the claim against the carrier
is
damaged, ask that the carrier's agent be present when the interface
listed
at
the back of this manual). Retain the shipping carton and padding
and
Inspection
is
damaged or fails
HP
sales and service
to
be settled.
to
meet
Installation
Before plugging
system's needs. The switches are preset
A1S1
A1S2
A1S3
A1S3 (6)
A2S1
Switch
(1-5)
in
the bus card, verify that i
Table
4.
Function
Select Code
Parallel Poll Sense
Calculator Address
System Controller
Parallel Poll
Bit
ts
address and function switches are set
at
the factory
98034 Factory Settings
7
Neg-True Logic (position 1)
Talk = U, Listen = 5 (off, on, off, on, off)
Enabled (on)
Bit 1
as
follows:
Factory
Setting
to
your
is
Changing any of the switch settings except select code requires opening the interface case;
see page
After verifying (or changing) the switch settings,
1. Switch the calculator off.
2.
3. Verify that the required I/O
4. Switch the calculator back on.
10
for instructions.
Insert the bus card into
card
firmly into the slot.
see the manual furnished with the
anyone
ROM
install the card
of the I/O slots at the back of the calculator. Press the
is
plugged
ROM
in
to
provide the calculator with bus control;
.
as
follows:
8 Installation
Interconnecting Cables
A 4-meter cable
peripheral
the
the new
Length Standard
10.5 meter 10833A
1 meter 10631A 108338
2 meters 106318
4 meters 10631C 10833D
Cabling
device
low-EMI bus cables listed below .
Length
is
supplied with the bus card. The
. Other devices may be
Accessory Number
Low
EMI
10833C
Figure 2. Standard HP-IB Cables
Restrictions
added
piggy-back
to the bus by using either the standard or
connector end is connected to
In
order to ensure
of
length
For
2 m/
devices (10 device x 2 m/
(4 +
than two meters must
connected together using one 4-meter and thirteen 1-meter
Other combinations may be used as long as both requirements are met.
There are no restrictions to the ways
recommended that no more than 3 or 4
device
mechanical
bus
• The total length of cable permitted with one bus card must
meters times the number of
as one device).
• The total length of cable must not exceed 20 meters .
example , there may
device
(8
x 2) = 20). If more than ten
. The resulting structure could exert
proper
cables when they are
= 4 m). Additional devices may
damage
operation of the bus. two rules must
connected
devices
be
up to 4 meters of
device
be
used between some of the devices. For example, 15 devices can be
.
= 20 meters) using one 4-meter and
devices
cables may be connected together . However ,
piggy-back
be
observed regarding the total
together:
be
less than or equal to two
connected together (the interface card
cable
between the first two
be
added
are to be connected together , cables shorter
great
using 2-meter cables
cables
connectors
force on the connector mounting and cause
be
stacked together on one
is
counted
devices
eight
(4
(2
devices x
up
to a total of
2-meter cables
+ (13 x 1) = 17).
10
it
is
Hardware Conversion Kit
The
cable supplied wi
M3.9xO.6)
mounting hardware wi
metric hardware is
A convers ion
metric threads. Order
. Earlier bus cables and some HP-IB compatible instruments, however, have
it
th
the 98034 Interface has mounting hardware wi
th
English
black. Do not attempt to mate silver and black hardware.
is available to replace the mounting hardware
HP
part number 5060 -0138.
threads (6-32 UNC). The English
LOW EM I Cable Adapter
The
HP
1 0834A Adapter helps in applications where limited rear-panel space is available for
connecting the new
away from the rear
connector .
low EMI bus cables . The adapter extends the bus cable about 23 mm
panel, prov iding space for other connectors , switches, etc
th
metric threads (ISO
cable
hardware is silver while the
on
any
HP-
IB connector wi
.,
near the HP-IB
I
nstallat
-
th
ion 9
The 1
0834A Adapter
HP
instruments
your
HP
tails.
sales representative for more de-
is
packaged with some
, where
needed. Contact
Figure
Select Code
The select code switch is accessible through a small hole
switch is preset to
small screwdriver.
select code 7 at the factory.
The
Desktop Computer reserves certain select codes (see the Operating and Programming Manual). Those codes are reserved for internal
computer peripherals (display, keyboard, etc). Also do not use
the same code for more than one interface.
To
change the setting, rotate the switch using a
NOTE
3.
The 1 0834A Adapter
on
the top of the interface case. The
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