Hewlett-Packard products are warranted against defects
materials and workmanship. This warranty applies for
from the date of delivery, or,
nents listed
will
repair or replace products which prove to
the
warranty
Packard.
in
the operating manual, for the specified period.
period provided
No
other warranty
AND
in
is
ASSISTANCE
the case of certain major
be
defective during
they
expressed or implied.
are
returned
in
one
year
compo-
We
to Hewlett-
We
are not
liable for consequential damages.
Service contracts or customer assistance agreements are available
for Hewlett-Packard products that require maintenance and repair on-site.
For any assistance, contact your nearest Hewlett-Packard
Service Office. Addresses are provided
at
the back of this manual.
Sales and
!] .
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Page 5
Model 1 l 180A
Table
of
Contents
··
]
..
.
]
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I. GENERAL INFORMATION .
1-1
. Introduction
1-
7. Accessories Furnished
(with Data
1-8. Accessories Available
(with Data Storage Only) . ....
~fun
II. INSTALLATION
2-1. Introduction ...
2-3
. Initial Inspection ... . .
2-5. Installation
2-
7. Storage Connector . . ........
2-9
. Repackaging for Shipment . ....
~fun
III. OPERATING INSTRUCTIONS ... . ....
3-1
. Introduction . .
3-3.
Basic
Operation . . .
3-13. Operation with Single Channel Plug-Ins .
3-18. Operation with Scanning Unit .
3-25. Sample-and-Hold Improves Digitizing .
3-29. Data Storage Used in the 2070A
3-32. How to Clear Data Storage ............
3-36. Applications .
Section
IV. THEORY OF OPERATION . .
4-1. Data Output
4-2. Present Mode (Isolated
44.
Storage Mode (Memory) . .
4-6. Panel Transfer
4-8.
IBCD
.......
4-13. Inhibit and Printer Hold
4-15. Encode (External Trigger)
4-1
7.
Basic
Storage .....
......
Storage Only) . .
...
. ............
......
of
1l180A
......... . . ........
.. ..
.......
........
...
........
.. ..
. . . .... . . .
.. .. ......
. . . . .
.....
. .
.........
into 3480A/B . . . . .
. . ....
...
...
.............
......
...
...
.......
.......
..... .. ..........
BCD) ....... ... 4-1
...........
.. ............. 4-1
. .
..........
. . . .
...
. . .
...... ........
.........
.............. 4-
TABLE
......
....
...
. .
....
........
...
.. ..
......
......
...
...
.....
.. ..
......
....
. . . . . . .
OF
CONTENTS
&~
. 1-1
1-1
1-1
..
1-1
&~
2-1
2-1
2-1
2-1
...
2-1
. .
2-1
~
3-1
...
3-1
3-2 5-8. Storage Check . .....
..
3-5 5-14. Troubleshooting
. 3-6
. 3-8
. 3-9
3-10
3-10
Page
. .
4-1
4-1
..
4-1
4-1
4-1
4-1
Section IV (Cont'd) Page
4-22. Turn-On
4-24. Printer and Dump Hold Cycling . .
4-
Peak Reading
3-23. Single Input System .
3-24. Multiple Input System . .
3-
25. Random Sample .........
Schematics and Diagrams
7-1. Isolated
7-2.
Basic
Storage ...
7-3
. Address Counter, Limits
7-4. Preset Trigger, Printer Hold,
Control
7-5. Scanner
7-6.
Panel Transfer, Printer and Dump Hold
Cycling
7-7
. Inhibit, Turn-On, Continuous Cycle ....
7-8
. Measurement Add, Encode .
Control and Timing ........ . . .
7-9.
7-10. Data Output .
....................
BCD
..........
Enable
Control, Jump
.......................
........................
....
..
......
.........
..
...................
.................
.......
.
.. ..
.......
.......................
.
.......
.................
Computer
..................
...
. .
..........
.
. . . .
. . .
...
.....
.........
....
...... . 3-12
........
......
..
.
.....
....
....
...
..
...
3-10
3-11
3-11
3-12
. 3-12
3-12
7-3/7-4
7-3/7-4
7-3/7-4
7-3/7-4
7-5/7-6
7-5/7-6 I
. 7-5/7-6
. 7-5/7-6
7-7/7-8
.
...
7-9
:1
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Page 7
••
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Model
l l 180A
r.
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Section I
SECTION
GENERAL
1-1.
INTRODUCTION.
1-2.
The Hewlett-Packard
Digital Voltmeter may be equipped with
t
'r.'.
1
•.
.
:.·,;.
~.
.
..
' l
-
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·
,··
i
Storage.
into Data
output
external device. Data
recorder where readings may be taken at high speed, stored,
then outputted at
1-3. Each stored reading includes
by the 3480A/B including input voltage magnitude, range,
function, polarity, and overload. The number
stored
outputted, two additional digits are added
reading number.
3480A/B input terminals.
Up
to 50 complete
Storage at up to 1000 readings per second. The
of
these stored readings may be governed by an
10 to
is
selectable up to 50.
All
Model
Storage
20
lines per second.
output lines are isolated from the
3480A/B Multifunction
Option 005 Data
DVM
readings may be entered
is
ideal for use with a digital
all
information generated
of
When
stored readings are
to
identify the
readings
INFORMATION
include the 3481 A with a single
de
with 5
ranges and 6
channels plus 3
1-6.
may
2070A, which includes the 3480A Multifunction
5055A Digital Recorder plus any 3480 plug-in. A special
rear panel includes the major Data
the form
1-7.
6 foot
split and left unterminated.
tor for Data Storage.
1-8.
ranges, the 3484A with 5
S1
ranges and the 3485A with up
de
ranges.
Any
of
the above capabilities including Data Storage
be
purchased in a self-contained data logger, the
of
easy
to
use switches.
Accessories
"Y"
Accessories
Furnished
cable with Remote Control lines and
Available
(with
10 V
de
range, the 3482A
de
ranges, 5 true rms
Storage control lines in
(with
Data
Storage
Other end has 100 pin connec-
Data
Storage
only).
only).
to
50 input
DVM,
BCD
ac
the
lines
·1
..
''
J .
..
··
1
Option 005 Data Storage includes Isolated
1-4.
Data Storage
becomes identical to that
1-5. The 3480A/B offers a wide variety
which may be used with Data
·
l("
I"
is
disabled, the output
of
Isolated
3480A
DIGITAL
+I 4
1
~1-
.....
-
34808
DIGITAL
Ir'
' . I
2070A
VOLTMETER
(,
r 4
,
·
71'
VOLTMETER
DATA
LOGGER
BCD.
Storage. These plug-ins
(e:
..
-
BCD.
of
the 3480A/B
of
plug-in units
may
of
these mainframes
be
When
DATA
used
-hp-
11181 A: Data Storage Cable for use with 5050B or
is
5055A Digital Recorders. This
Control lines split and left unterminated and the
terminated with a
recorder.
Storage.
This section contains installation and shipping infor-
mation for the
2-3.
INITIAL
2-4.
Each l l l 80A has been carefully inspected prior to
shipment and should
of
mars or scratches.
should
have occurred in transit or for deficiencies otherwise.
there
is
carrier;
attributable to shipping, refer to the statement
on the cover page
Section V to check the instrument performance. Refer to
Section I for the list
instrument.
2-5.
INSTALLATION
2-6. Contact
Office
regarding installation
3480A/B. (See Appendix B for office locations.)
2-7.
STORAGE
2-8.
See
Model
l l l 80A.
INSPECTION.
be
in perfect electrical order and free
To
confirm this, the instrument
be
inspected upon receipt for damage that might
damage due to shipping, file a claim with the
if
there are electrical or mechanical deficiencies not
of
warranty
of
your
CONNECTOR.
Table
3-1
this manual.
of
equipment supplied with the
OF
11180A
IMPORTANT
local Hewlett-Packard Sales and Service
of
for the
Use
the procedures
INTO
3480A/B.
the
11l80A
signal
arrangement at the
into
an
existing
If
of
II
0 N
Storage Connector.
2-9.
REPACKAGING
2-10.
If
the instrument
for service or repair, attach a tag to the instrument
describing the work to be accomplished and identifying the
owner and instrument. Identify the instrument by serial
number, model number and name in any correspondence.
you have any questions, contact your local Hewlett-Packard
Sales
and Service Office.
locations.
2-11.
If
the original shipping container
the instrument in the container with appropriate packing
meterial and
metal bands. A
nearest
2-12.
If
heavy carton or wooden box with an inner container.
the instrument with heavy paper or plastic and place
cardboard strips across the face for protection before
placing the instrument in the inner container.
material around
outer container
the container with "DELICATE INSTRUMENT," or
"FRAGILE".
-hp-
an
seal
Sales
-hp-
FOR
SHIPMENT.
is
to be shipped to Hewlett-Packard
See
Appendix B for office
is
to be used, place
the container
new
container may be purchased from your
and
Service
container
all
sides
of
well
with strong tape or metal bands.
well
with strong tape or
Office.
is
not to
the inner container, and
be
used, then use a
Use
If
Wrap
packing
seal
the
Mark
J
J
·1
2-1
Page 12
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Page 13
Model l l l 80A
Section III
r
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SECTION
OPERATING
3-1.
INTRODUCTION.
3-2. Each stored reading includes all information generated
by the
function, polarity, and overload. Two additional digits are
3480A/B including input voltage magnitude, range,
Table 3-1. Storage Connector.
d1~
I()
52
76~
........................
...........................
I I -• • • • • • • • • • • • • • • • • • • • • • -' I
•••••••••••••••••••••••
Ill
INSTRUCTIONS
added to identify the reading number (i.e. numbers 1
through 50).
3480A/B input terminals. Tables
storage control signals and list the pin numbers
control and data signals at
All
BCD
output lines are isolated from the
3-1
and 3-2 describe the
the
Storage Connector.
~~~
~rc')'I
~100
75
of
the
r
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PIN - SIGNAL
I - A
I}
BI
_
2
3-
4-2
5-
6-
7-
8-
9 -
10-
11
- OVER RANGE
121314-
1516-
17-
1819-
20-
21
22-
23
24-
Scanner or Storage Units
I
10
20
100
200
1000
2000
GROUND
A
RAN(;E}
B RANGE
D
FUNCTION}
E FUNCTION
POLARITY
OVERLOAD
IOA
} Storage
20A
PRINT
GROUND
INHIBIT
PIN-
{
I.D.
Data
Tens Channel I.D. c(
on
Scanner
Range
on
Scanner
Tens
I.D. <
SIGNAL PIN - SIGNAL
26
- C I
_
DI
2 7
28-
4
2·
9-8
30-
40
31
-
80
32
-
400
33-
800
34
-
4000
35 -
8000
36
-
GROUND
37-
GROUND
38
- C RANGE
39
- GROUND
40-
RATIO
41
- GROUND
42-
GROUND
43-
GROUND
44-
40A
45
46
- MEASURE
47-
INHIBIT
48
- STORAGE FLAG
49
50-
GROUND
83
- COMPUTER CONTROL ENABLE
84
- PRESET TRIGGER 0
85
86
-
87 - INPUT CYCLE HOLD
88
89
- STATUS FLAG
90
- PRESET TRIGGER
91
- PRESET TRIGGER
92
- JUMP HOLD
93
- MEASUREMENT HOLD
94
- STORAGE HOLD
95
- JUMP
96
- SCANNER CONTROL
97
- STORAGE
98
- STORAGE
99
- STORAGE
100 - STORAGE
GROUND
LIMIT
LIMIT
LIMIT
LIMIT
II
180A-8-
20
10
ENABLE
40
10
20
30
2496
3-1
Page 14
Section III
Table 3-2. Storage Controls.
Model
l l l 80A
':
l
'·
ENABLES
Storage Enable - Activates Data Storage; otherwise
like
the
Option
004
Isolated
Computer
Scanner
Storage Limit
FLAGS
Status
Storage Flag_ Line goes
HOLDS
Inhibit
Measurement
Control Enable - Application
Storage
to
be used
with a computer.
Control
Command.
All
four
locations
readings are
mand may
up
with
or
50
may be reached
Flag - Line
and
"low"
command;
- Disables
3481,
3482,
3485A
. Ground this line when external triggering
but
allows manual sampling. When released
Enable - Allows
10,
20,
30,
lines
open
up
to
the
outputted.
be
used
the
last reading so
is
"high"
while
data
goes
"low"
the
and
Hold - Prevents
front,panel SAMPLE RATE
3484,
BCD
.
of
the
Scanner
40
- Limits
the
allows
Storage Limit
Scanner Control Enable
to
cause
the
that
and
the
while
is
being
outputted
"high"
when
the
and
both
number
50
stored
must
unused storage positions
a Storage Limit
data
outputted.
data
is
being
to
acknowledge each Measure
next
Measure may be accepted. reading so
the
free running ability
internal
"low"
readings.
be filled
entered
.
and
the
11180A
acts
state
allows Data
to
give a
Jump
of
stored
readings.
All
storage
before
Jump
20,
to
be used.
any
Com-
to
fill
30,
40,
storage,
of
the
of
the
or
of
10,
into
control
is
external sampling,
momentarily,
allows
one
be
used with
Printer Hold -
by
the
Dump
Input
doesn't
set
COMMANDS
Measure·
used
line may
Jump
· Causes
reached
Preset Trigger - Allows a preset
prior
"O"
line -
"10"
line - Stores
"20"
line·
*Total
lines;
it
50
complete
the
3485A.
The
3485A.
Hold · Inverted Printer Hold.
Cycle Hold -
Trigger.
When
to
to
Stores
number
readings per trigger
printer
go
and
and
Stores
The
into
the
Output
Computer
input
and
be
that
output
used
to
trigger
the
unused storage positions
a Storage Limit
the
data
after
the
Zero readings prior
10
readings prior
20
readings prior
of
stored
input
and
output
storage cycle. It
disables internal triggering, including
Storage Unit
Control Enable
the
outputed.
trigger.
readings
is
continuously
Cycle. It may be overridden
storage
data.
3480.
of
10,
20,
number
illustrated here.
to
trigger
to
trigger
to
trigger
depends
of
inputs
is
held low, this line
When CCE
to
fill
up
30,
readings
and
and
and
on
with
40,
or
to
50
after.*
40
after.*
30
after.*
the
Storage Limit
is
is
not
data
by
high, this
the
50
may be
be
stored
to
that
and
Pre,
last
is
I.
··
1.
'
f
l
3-3.
BASIC
3-4. The following rules apply to operation
OPERATION.
of
Data
Storage:
a. The number
outputs from Data Storage
will
of
always equal the Storage Limit setting (10, 20, 30, 40, or
50).
b.
The number
Storage Limit unless Jump
of
readings stored must always equal the
is
used to artificially begin an
output cycle.
c.
The Storage Limit must equal or exceed the number
of
readings to be stored.
d.
The maximum input rate (into storage)
The maximum output
3-5. Readings may
a.
Printer Hold-Off (for
b.
Dump Hold (opposite sense
rate..;;;
be
gated out
50,000/s.
of
use
with printers).
as
Data Storage by:
Printer Hold-Off).
..;;;
1000/s.
c. Measure (special case with Computer Control Enable
grounded).
3-6
. Figure 3-2 illustrates the fundamental operation
of
Data Storage with a printer. Storage Flag falls low to
indicate that the first stored reading
recorded. Printer Hold-Off
the printer (or other device)
Hold-Off drops low, Storage Flag
is
transmitted back to signal that
is
taking data.
will
later to signal that the next reading
(not shown)
is
identical to Printer Hold-Off but
opposite sense. Status Flag indicates
is
ready to
When
be
Printer
drop low 16 to 20 µ s
is
ready. Dump Hold
of
the
if
Data Storage
storing (high) or outputting (low). The output cycle
continues until the Storage Limit
3-
7.
A non-multiple
gated out using Jump
the desired number
storage, a Jump
The last reading
of
10 readings may be stored then
as
shown in Figures
of
readings have been entered into
is
issued which begins the output cycle.
is
repeated to fill the number
is
reached.
3-3
and 3-4. Once
of
outputs to
equal the Storage Limit.
If
3-8.
Data Storage
and the number
is
used with a 3485A Scanning Unit
of
channels scanned
is
less than the Storage
Limit, grounding Scanner Control Enable causes an auto-
matic Jump once the
Last
Channel
is
reached.
More
details
on use with the scanner follows the next section.
ll
is
3-2
Page 15
.l
..
"•
'•
:1
r
Model 11180A
3-9. Preset Trigger may be used
Triggering
internally. When any
grounded, the
dumped
3-5. The sum
"X"
is
continuous either from an external source or
"X"
out
plus the next
of
equals ''O",
of
the three Preset Trigger lines are
number
"X"
and "Y" equals
"1
O"
, or
Cycle Hold must be grounded in this mode
Input Cycle Hold causes readings
to
begin an
of
previously stored reading
"Y"
readings
the
"20"
previous readings. Input
output
as
shown in Figure
Storage Limit, and
of
to
be continuously
cycle.
operation.
inputted without any output unless given a Preset Trigger.
3-10. Grounding Measurement Hold stops
both
from external and internal trigger sources.
inhibits
Measurement Hold momentarily
causes Data Storage
both
input and output storage cycles. Ungrounding
as
shown in Figure 3-6
to
cycle through one complete input
and output cycle automatically. Triggers equal
all
sampling
It
also
to
the
Storage Limit are counted automatically.
3-11. Grounding
COMPUTER CONTROL ENABLE allows
one line, MEASURE, to be used to gate readings into and
Section III
out
of
storage
PRINTER
readings out. The nature
to
is
acknowledge each MEASURE for both storage and
output
cycles. This mode
computer systems or systems with a limited number
as
shown in Figure 3-7.
DUMP
HOLD or
HOLD-OFF are no longer needed to gate
of
STORAGE FLAG also changes
of
operation
was
designed for
of
control lines. The timing for Data Storage running at a
50 kHz
3-12. The question is which method
should be used for various applications?
source counts the triggers (i.
Scanni
cycle begins more or less automatically.
is
output
rate
is
shown in Figure 3-8.
of
e.
triggers from the 3485A
ng
Unit are automatically counted), then the output
If
the trigger source
free running, one
of
the Preset Trigger lines may be used
storing readings
If
the trigger
or Measurement Hold may be used. The Preset Trigger has
DVM
the advantage since the
may be triggered prior to a
storage cycle to allow the proper range and function to be
set up manually. Preset Trigger requires exactly the same
type
of
input as any other trigger and
compatible with a given system. Figure
is
most likely
3-1
should make
to
be
this selection clear.
1
J
. 1
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r
YES
NO
OUTPUT
IS
AUTOMATIC
~-----1
.---------f
USE
SCANNER
CONTROL
START
OUTPUT
USE
JUMP
TO
START
OUTPUT
START
STORAGE
OUTPUT
CYCLE
UNGROUNDING
HOLD
USE
PRESET
TRIGGER
(INPUT
CYCLE
HOLD
GROUNDED)
ENABLE
TO
ANO
BY
MEASUREMENT
"O"
llllOA-l-2Sl3
~----I
Figure 3-1. Storage Operations.
USE
PRESET
"10"
CYCLE
OR
HOLD
TRIGGER
"20"
(INPUT
GROUNDED)
3-3
Page 16
Section III
INTERNAL
OR
EXTERNAL
TRIGGERS
Model l 1180A
I'
J
(UP
TO
1000/S)
l'.
STORAGE
FLAG
(FROM
~~~~~-
PRINTER
DVM)
-~~~--1·r--~~--"'-"1~~~~~
HOLD-OFF
(TO
~:-.--iU
STATUS
FLAG
(FROM
OVMI
STORAGE
10, 20,
DEPENDING
l
lll!IOA-8-251
..
Figure 3-2. Basic Operation
Basic
operation
readings are ready . Printer
automatically
but
Measurement
storage and
Sampling does
proper number
automatically
Hold
output
not
of
.
MEASURE
~~~~~~~~~~~~,--------"----.
flfiJ
I I
1
STATUS
FLAG
STORAGE
COMPUTER
INTERNAL
STORAGE
Figure 3-7. Computer Control Enable.
COMPUTER
readings
line
(MEASURE). PRINTER
STORAGE
and
output
to
be
FLAG
cycles .
CONTROL
gated
may be
used
1000
to
by
prior
/s
;>
1
ms
cycle
take place
triggers equal
UP
TO
UuulJ
INPUT
CYCLE
ENABLE
CONTROL
ENABLE
MEASURE
INHIBIT
LIMIT ("10" "20"
into
acknowledges each
OR
"40"1
ENABLE
storage and
HOLD-OFF
automatically
breaking this line
to
or
to
the Storage
start one complete
after a storage cycle. The
UP
TO 50,
..
20µs
momentarily.
Limit
000
/s
are counted
I
~____.I
OUTPUT
CYCLE
}
'"""""'"
may be grounded
out-of
storage using the
is
MEASURE
no longer needed .
in
both
to
storage
allow
same
Figure 3-8. Data Storage Timing.
Data Storage running
Measure is
Storage Flag remains high
grounded
acknowledged
to
achieve this speed.
Table 3-3. Methods
Lines Used
Jump
Preset Trigger
"O",
"1
O",
Input
Grounded
Measurement
Released
Ground
3-13.
or "20"
Cycle
Hold
from
OPERATION
Hold
at a 50
with
WITH
kHz
output
a high going Storage Flag. The
16
to
of
Outputting Data.
Triggers
10,20,30,40,orSO
Triggers < Storage
Last reading repeated
Storage
Trigger source may free run
Triggers counted
DVM
storage
Trigger source may free run
Triggers counted
DVM
SINGLE
rate. Each
20 ms. Continuous Cycle
Trigger Requirement
= Storage
Limit
samples before and
but
not
samples
only
CHANNEL
low
Limit
Limit
to
fill
automatically
during
while
printing
automatically
when storing
PLUG-INS.
going
3-14. There are 3 single channel plug-ins available for use
with the
3480:
3481A Single 10 V de range
3482A 5
3484A 5
de
ranges from 100 m V
ac
or de ranges from I 00 m V
6 ohms ranges from I 00
to
1000 V
il
to
to
I 000 V
I 0 Mil.
is
3-5
Page 18
Section
III
Model
l l l 80A
3-15.
In
either
de
or ohms, these plug-ins are able to make
1000 correct readings/s. Within 1 ms, the 3480
is
able to
respond to a full-scale change and digitize. These single
channel plug-ins combined with the
3480 main frame are
able to act like a low cost, 1 kHz A-to-D converter. Data
Storage allows up to 50 readings taken at up to 1000/s to
be
stored and printed.
3-16.
As
shown in Table 3-4, these plug-ins contain their
own sample-rate oscillator able to take from 1 reading/s up
to approximately
40 readings/s. These plug-ins must
be
externally triggered (throup,h the main frame) to achieve
higher sampling rates.
Table 3-4. Maximum Triggering Rates.
Internal External
3481A
3482A
3484A
*Variable
front
panel sample-rate
3-17. Data Storage stores
available from the
mation
is
printed and the format. The format shown
applies to the
3480. Figure 3-9 shows what infor-
2070A Data
<(40/s*
<(40/s*
<(40/s*
all
of
the information normally
Logger
<( 1000/s
<( 1000/s
<( 1000/s
control,
not
calibrated.
which rearranges the
columns into an easier to read order. Decoding for this
information
is
given
in Table 3-5.
Table 3-5. Decoding
Single Channel Plug-Ins (3481
100mV
1000
mV
10V
100
v
1000
v
VDC
AC (AC) 1
OHMS
AC (DC)
DC
RATIO
AC (AC)
OHMS
AC (DC)
Polarity /Overload
POSITIVE
NEGATIVE
POS.
OVER
NEG.
OVERLOAD
Output
Range Code
1oon
1ooon
10
100
1000
10Mn
Function
RATIO
RATIO
RATIO
LOAD
Information
A,
3482A,
kn
kn
kn
5
4
3
2
1
0
Code
0
2
3
4
5
6
7
Code
0
1
2
3
or
3484A).
for
ri·.
I .
I .
Tl:
' .
"
1".
J
. .
I .
0 5 4 0 1 1 1 4 2 9
1
STORA~J
l.D.
RANGE
POLARITY/OVER
l1REA~ING
STORAGE
FUNCTION
LOAD
x 0 4 0 1 1 1 4 2 9
RANDOM]
NUMBER
ZERO
RANGE
lllSOA-B-2520
Figure 3-9. Printer Format
The
printer
two
format
single channel plug-in (3481
columns
same
.
Storage and a
first
meaning when Storage
remain the
l~
READING
FUNCTION
POLARITY
for a 2070A
of
the
print
is
not
STORAGE
NOT
/OVERLOAD
for
2070A Data Logger.
Data Logger equipped
A,
out
on a
enabled. The remaining columns
3482A
2070A
ENABLED
ENABLED
with
3484Al.
Data
The
or
Data Logger lose
3-18.
OPERATION
WITH
SCANNING
UNIT.
3-19. The 3485A Scanning Unit may be used to scan up to
50 2-wire input and measure each input on ranges from
100 m V to 10 V. This scanner is designed for low level
transducer applications and uses FET switches to achieve a
speed
of
1000 channels/s.
3-20. Data Storage allows the speed
Unit to
be
used economically with a printer.
of
the 3485A Scanning
Up
to 50
channels may be scanned and stored in 50 ms then printed
out at
10 lines/s.
3-21. The 3485A may be programmed to scan at any
rates from 1 channel/s to 1000 channels/s as selected
front panel using Channel Delay. Any number
up to
50 may be scanned using
Last
Channel settings
of
channels
of
on
on
six
the
the
front panel.
3-22. Figure
format. The format shown applies to the
Logger
order. Decoding for this information
3-10 shows whatinformation
is
printed and the
2070A Data
which rearranges the columns into an easier to read
is
shown in Table 3-6.
:1
I .
' }
/.:
J.
3-6
Page 19
Model l l l 80A
STD
1 5 1
RAGE
ENABLED
204068
PROGR
AM INITIA
TE (TO SCAN
NER
Section III
)
. I
J
TENS
POLARITY
OVERLOAD
STORAGE
CHANNEL
l.D.
L.,JJ
1.0
.
AND
STORAGE
~
l
RANGE
NOT
ENABLED
x 5 1 1 2 0 4 0 6 8
RANDOM
NUMBER
JI
CHANNEL
BACKWARDS
II
llOA-1-2521
1.0
.
POLARITY
OVERLOAD
Figure 3-10. The Printer Format.
~
l
RANGE
AND
17
TRIGGER
AST CHANNEL"'
AG (FROM
OFF
(TO OVM)
BLE (GROUNDED
LIMIT "20"
LINE (GROUNDED
S
OVM)
17
)
)
)
Used
L
ST
______;_.,;..__;___~u
11180A-B-25
ORAGE FL
PRINTE
R HOLD-
STORA
GE ENA
SCANNER ENABLE (GROUNDED
S
TORAGE
22
Figure 3-11. Data Storage
Scanning Unit.
Data
Storage
non-multiple
Scanner
storage
Outputting
of
20
readings.
Enable
jumps
begins
used
of
ahead
10
must
with
with
channels
be
grounded.
to
the
the
the
is·
Storage
17th
3485A
scanned,
When Chan:iel
Limit
reading
JUMP FROM
SCA
I
c::
ST
~CYC
5µs 16TO 20µs
/\
·
..-----~u-0
ORA
GE STAR
LE
r"'i
NNER
TS
OUTPUT
LJooo
20 REA
DING GATED OUT
STORAGE
LIMIT" 20
with
the
3485A
Scanning
in
setting
repeated 3 times
this
case,
, in
Unit
17
17
this
channels
is
for a total
TO
0 0
where
reached,
case 20.
a
.
..
·r
.·
.r
1
]
3-23. When
equal
cause Data Storage
the
number
the
Storage Limit, grounding Storage Enable will
to
of
jump
channels
to
an
output
to
be scanned does
cycle after
the
not
last
channel has been scanned as shown in Figure 3-11. The
reading
Limit
4-3. In the non-Storage mode
Transfer gates receive a pulse on the Present line to transfer
the Data to the outguard storage flip-flops. A pulse
generated and coupled through the transformers on the
Data bits that are false. The flip-flops are Reset to the true
state by a high pulse and then set to the false state if the
Data bits are false. The
strict binary form into
containing Overrange and Overload information.
4-4.
Storage
4-5. In the Storage mode
Transfer gates receive a pulse on the Memory line and the
Shift Registers receive a pulse
transfer a stored Data reading to the outguard flip-flops.
Mode
Mode
(Isolated
BCD).
"thousands" data
BCD
(Memory).
of
of
operation, the Present
is
decoded from a
(binary coded decimal)
operation, the Memory
on
the
MOS
Oock
OF
is
line to
Section IV
IV
OPERATION
4-12. The
signal through L29, the Transfer pulse, and the Clock
Oscillator.
4-13.
4-14. The Inhibit line
sampling when External Trigger
Inhibit line forces
Q3
Printer Hold line causes A2Ql to conduct to make
Interface Hold stop the 3480 from sampling.
4-15.
4-16. A low level
L37 to generate a
3480 to take one measurement.
4-17.
Storage Flag
INHIBIT
to conduct and
ENCODE
BASIC
AND
(EXTERNAL
STORAGE.
is
controlled by the
PRINTER
is
A21C46
give
Interface Hold to the 3480. A high
HOLD.
used to stop the 3480 from
is
used. A low level
pin 8 high, causing Al Ll2 and
Oock
TRIGGER).
on
the Encode line
30
µs External Trigger and cause the
gives
a pulse through
Control
on
the
'
......
1
·~-,.
.!
]
4-6.
Panel
Transfer.
4-
7. Front panel readout
plished by the
output
through the same lines that supply the Data to the l l l 80A.
Only the actual digits
polarity, function and range (decimal point) are not
transferred.
Cycle.
4-8.
4-9. When the 3480 begins a reading,
goes high to stop the
pulse through L29 to reset the
disable the oscillator
4-10. A Print Command
3480 Sample
on the Clock Oscillator and trigger the Cycle Control
one-shot IC39 to start a basic cycle
mode.
4-11. A low pulse from IC39 pin 6
IC35 pin 14 to start the Timing Generator. First, a Reset
pulse
Outguard Data flip-flops. It
trigger the
flip-flop IC38. Next, a Transfer pulse
pin 1 and coupled through L35 to
flip-flop and force the Present line high to transfer the Data
through the Present Transfer gates.
of
IBCD.
is
generated at IC36 pin 6 which resets
Panel Transfer gate, which receives the
the Memory Transfer gate and operates back
Panel Transfer
Period. This
MOS
Oock
of
the stored Data
of
the reading are transferred; the
is
accomplished
Oock
A2
Oock
Oscillator by coupling a
Oock
Gating Flip-Flop and
at
IC36 pin 9.
is
generated at the end
is
coupled through L30 to turn
of
the l l l 80A on
gives
is
also coupled through L38 to
one-shot and reset the Data Transfer
is
generated at IC34
"set"
the Data Transfer
is
accom-
on
the Output
Control signal
of
a high-pulse at
all
of
the
IBCD
the
4-18. To enable operation
Storage Enable line
high.
4-19. During the 3480 sample period, the
line disables the
the end
generates a pulse through
flip-flop and trigger the Cycle Control one-shot to allow the
Timing Generator to begin a single cycle.
4-20. A Reset pulse
all
also coupled through L38 to trigger the
one-shot and shift the Data
counted by the Units Address Counter.
4-21. Next, a Transfer pulse
that
Transfer at Q8, which transfers the Data from the
Shift Registers to the Data Outguard flip-flops.
4-22.
4-23. At instrument turn-on, a low level at A2Q2 forces
the
Jump flip-flop to the Jump state to complete the Data
outputting, and sets the
proper state to allow the
Jump
The
the Printer will not be commanded to print.
of
of
the Data Outguard flip-flops in the true state.
is
coupled through L36 to
TURN-ON.
I/O Control flip-flop to the Output state, forces the
Output cycle
Storage Flag
is
Oock
the 3480 Sample Period, Print Command
is
so
is
held high by
of
the Storage mode, the
held low to make the Memory line
Oock
Control
Oscillator
generated at A2IC36 pin 6 that puts
Oock
that it
as
in the
IBCD
L30 to
Oock
"set"
the
Oock
MOS
MOS
Shift Registers.
is
generated
Gating flip-flop to the
Oscillator to complete the
is
ready for an Input cycle.
TO
at
A2IC34 pin 1
give
a Memory Data
signal at CR7
mode. At
Gating
It
Clock
It
MOS
so
that
4-1
is
is
Page 26
....
·
.........
Section IV
4-24.
PRINTER
4-25. A low on the Dump Hold line or a high on the
Printer Hold line
IC39 pin 2 to cause a single input and output Storage cycle.
4-26.
PANEL
4-27.
On
A21C22
Data from the
readout. Al
prevent the
hold Reset low to hold the
state.
4-28. When
Data, it triggers Al
IC32
has completed an Output cycle. This
when the
back high, they erroneously trigger the 3480 for a reading.
4-29. The high
high to allow the pushbutton on the plug-in unit
3480 to trigger the Cycle Control one-shot through the
External Trigger line to
4-30.
4-31 . The basic storage operation
keeps track
outputted. The basic count pulse
11
through
through
by scanner functions at
inverted and counted by a decade counter IC32. Every 10
counts into this counter generates one output pulse which
is
Ll2,
and counted by four flip-flops,
1Il80A
50 readings, the counter actually acts as a I 00 counter. The
frrst 50 as input; the second 50
flip-flops
bits, while the fourth flip-flop
Flip-Flop.
4-32. The Tens
reset, the
Hold signal holds it in one state or the other. The Reset
pulse
delay by
does not actually come after the
50th ;
50th reading has been inputted
pin 8 goes low to turn
to allow the Storage to skip a single reading after it
BASIC
on
the
Ll8
10 on the Al assembly. This count pulse
transferred back across guard to the outguard section by
amplified by IC19 pins I and 2 on the
is
is
generated by IC45 pin 8
so
the reset takes place on the first cycling after the
AND
DUMP
HOLD
CYCLING.
gives
a high at the Cycle Control one-shot
TRANSFER.
the Output Cycle on Storage (Mem) mode,
off
Al
Q4
and Transfer the
MOS
Shift Registers to the front panel
Q5
saturates to hold
3480 from taking a reading.
3480 Data flip-flops
Panel Transfer goes low after outputting the
IC39 to reset the Units Address Counter
Oock
Control and Reset lines are allowed to
Panel Transfer at
give
a Storage cycle.
Oock
Control low to
Q6
is
necessary because
AlQ4
holds IC35 pin 4
saturates to
in
the high
of
COUNTER.
is
around a counter that
of
how many readings have been inputted and
is
generated at IC46 pin
A2
assembly and
to a 4
µs
capable
of
IO
Ll9
of
taking in 50 readings and outputting
the Tens Counter are the ten, twenty and forty
Counter counts in a 50 sequence. At each
Flip-Flop changes state, unless an Input Cycle
produces the pulse width. The Reset pulse
is
transferred across guard
one-shot consisting
IC35 on the Al assembly.
IC's 43 and 44.
as
output. The first three
is
the IO (Input/Output)
on
49th
or
outputted, thus causing
of
IC37 pins 4
A2
the A2 assembly. A
reading, but after the
is
gated
It
assembly,
While
go
the
the
Model l l l
the counter to count in a l -through-50 sequence instead
the usual l-through-49.
4-33. The Reset pulse also
Hold Flip-Flop at
Flip-Flop at
outputted on the Status Flag line if the Status Flip-Flop
in Input Cycle Hold, thus giving an indication
counter has completed a complete cycling. This can be
useful in triggering such things
converter or an oscilloscope display
outputs
with information from the 3485A Scanner by
IC30, and
outputs are also buffered and outputted. The Flip-Flop
output
3 through 6.
9.
4-34. The
gate different functions.
Storage Flag during the output time.
pin I and gates the ability
storage cycle. This operation
It
through Al LI2 to stop internal sampling, and goes to the
S/H Trigger Inhibit line to stop the trigger capabilities
the 11186 Sample/Hold unit. During this time, it also gates
IC22 pin 9 to generate a Panel Transfer condition to
the data
During the input cycle only, the
pin 12, allowing the Scanner to
under Scanner Control Enable only.
4-35. Input
prevents
This command can be overridden if the Preset Trigger gate,
consisting
is
through
information that a Preset Trigger has occurred at
3, 4, or 5, and then gates the Reset pulse through
12 and
state.
4-36. The series
Cycle Hold, continuous input sampling takes place. At the
time
counters are in the proper state and the Input Cycle Hold
override flip-flop
occurs at the end
cleared and starts an
Hold overide flip-flop
Trigger. At the end
returns
4-37.
4-38. There are three Preset Trigger Lines -Preset 0, 10 and
of
go
is
buffered along with the Reset pulse by IC38 pins
IO
also goes to IC46 pin 5 and "holds" the mainframe
of
IO
of
13
11
to "clear" the
of
a Preset Trigger, the Tens and Units Address
to
an input cycle to await another Preset Trigger.
PRESET
IC32 pin 5 on A2, and resets the Jump
IC32 pin 10
the Units Counter are inverted and OR'ed in
out
as
Storage count data. The Tens Counter
IC3
7 pins
Flip-Flop
the
MOS
shift registers back to the front panel.
Cycle Hold, which goes directly to IC44,
Flip-Flop from returning to the
IC20 pins I through 6 and gate IC20 pins
are used. This Preset Flip-Flop stores the
of
events goes
IC20
of
is
of
TRIGGERS.
"enables" the Measurement
on
A2.
This pulse
as
a high speed D-to-A
of
the
output
11
through
is
used throughout the l l I 80A to
It
goes to
IO
is
"set"
an input cycle, the IO Flip-Flop
output
reset and waits for another Preset
this
output
13
and ICI 8 pins 8 and
IC23
pin I to create a
It
also goes to IC45
of
Encode signal to cause a
is
used only with a computer.
IO
Flip-Flop gates
give
a Jump Command
output
Flip-Flop back to the
as
follows: Under Input
. The next time a Reset pulse
cycle, and the Input Cycle
cycle, the
80A
will
also be
of
when the
data. The
AIIC29 and
put
IC31
cycle.
IC4
pins
IC20 pins
output
IO
Flip-Flop
of
is
of
11
::
·.1·
'.
,.
I
I
i]
;3.
•'
'"
is
:J.
4-2
Page 27
:
~
1
. . ·J
..
J
Model 11180A
20.
This
gives
the ability to arbitrarily set the time at which
the
0th, 10th or 20th reading
reading received by the
11th or 21st. Each line has an edge triggered one-shot
consisting
NAND
C6
pull-up resistor on the input to insure recharge
constant. The output pulse
of
the Preset 0 Trigger, it forces the 10, 20 and
flip-flops to the "O" state and sets the Units Address
Counter to a count
"sets" the Input Cycle Hold override flip-flop, IC20 pins 1
through 6.
4-39.
4-40. The Jump command stops an input or output cycle
in the middle and moves the
cycle. In other words,
begin on an output cycle;
output cycle, it would begin on an input cycle. A one-shot
on the Jump line produces a 1
the main Jump flip-flop consisting
and 6 and
"set", it goes low at pin 8
things. First, it goes to the
and 4 and prevents anymore data printing from taking place
if it
and causes the light isolator Ll2
thus holding the mainframe from taking anymore readings
until allowed to later. Thirdly, it goes to
cause
Generator to generate continuous timing pulses. The Jump
flip-flop
the Tens Counter.
4-41.
4-42. The Storage limits are made by comparing the output
of
the Tens Counter with the Limit 10, 20,
This
comparator sends a command to pin 4
flip-flop, causing a normal jump command to stop the cycle
in the middle.
4-43.
of
an inverter IC42,
gate IC41. In the case
form the
RC
time constant
JUMP.
IC32 pins 8, 9 and 10.
is
in on output cycle. Secondly, it goes to IC46 pin 3
IC38 pin 12
is
reset at IC32 pin 10 by the pulse from
LIMITS.
is
done by IC30.
MEASUREMENT
11180A
of
1 through 134. At the same time, it
if
it stops
to
go
high and allow the basic Timing
If
HOLD.
is
completed. The next
will
be counted as the 1st,
RC
network and a 2-input
of
the Preset 0 line, Rl 1 and
of
the one-shot, and Rl 2
of
is
a 1 µs low pulse. In the case
40
1l180A
if
of
Storage Flag gating, IC23 pins 2
the coincidence
on to the next type
on
an input cycle, it would
it stops in the middle
µslow
IC3
pulse which "sets"
of
IC3
l pins 1,
When
this flip-flop
2.
This low does 3 basic
of
Al to be turned on,
IC38 pin 2 to
30
and 40 lines.
is
of
is
the time
Counter
of
of
an
2,
4, 5
Ll9
of
met, the
the Jump
prevent
manual trigger). When the line
high for any period
Measurement Hold flip-flop
instrument
determined by the limit chosen by the operator. It
a
begin an output cycle (unless Input Cycle Hold
used), and then if the line has been returned low before the
output cycle
and no sampling will take place until the operator desires it.
4-46.
4-47. The Scanner Control Enable line allows the 3485A
Scanner
end
been reached or not.
A2
allowed
and not during a
conditions. The pulse
Flag going low, indicating the completion
4-48. There are other things that must be done in order to
make the Scanner work with the
is
Continuous Cycle, the Scanner goes through its Home
position in approximately 6
there while an output cycle
a one-shot
the Scanner at pin A on the J5B connector
mainframe.
4-49. Also,
which
Storage completes an
taken which
printed
going high and the Scanner going Home (Scanner Flag low)
"sets" a flip-flop composed
turns on Light Isolator
it off and acting as Isolated
When
on Al to stop this reading from being counted
reading. This
be taken
These readings are not counted; therefore,
output cycle, it
Reset
input
all
sampling by the 3480 (except from panel
is
released, or allowed to
of
time
as
short as 100 ns, the
will
change state, allowing the
to
take one complete set
is
completed, the flip-flop
SCANNER
to
of
a scan regardless
board gates a pulse from the Scanner. This pulse
to
is
done every time that the Scanner
out
this
is
if
is
prevented by the Scanner Home Flag to the "clear"
of
IC39 pin 3
CONTROL.
issue a Jump Command to the l l l 80A at the
of
whether the storage limit has
IC31
pins 8, 9, 10, 12 and
reach the Jump flip-flop only
3480 reading. This prevents lockup
is
generated by the Scanner Home
µs. It must, therefore, be held
is
IC39 pins 10, 11, 12, 13, 14 and 15 which resets
if
the Scanner Flag
output
is
the amplifier zero
with a 00 notation in front
done, it
is
the Monitor function on the 3485A
also
done because more than one reading could
is
not necessary to reset the counter IC32.
on
cycle, a single reading
of
Lil
to override the Storage, turning
BCD
sends a low signal to IC35 pin 2
Al.
of
samples.
will
again
on
an input cycle
of
a Scan .
Storage Unit. First, in
taking place. This
is
low and a reading
is
Home and the
of
the Scanner. It
of
it.
Oock
IC35 pins 8 through
to
output this reading.
at
Section IV
This
will
is
be
13
on the
is
done by
of
the 3480
is
will
will
Control
13
as
a normal
is
the end
go
set
is
then
being
"set"
is
taken
be
be
and
used.
of
an
4-44. The Measurement Hold flip-flop
each cycle
line
"set"
the line is held low, the flip-flop
and stops any further sampling by
Trigger Inhibit and Interface Hold.
4-45. Measurement Hold works
held low at the end
if
the Measurement Hold line
is
left open or floating high, the flip-flop cannot
and thus does not stop the 3480 from sampling.
of
an
output
is
reset at the end
is
is
reset at the proper time
giving
as
follows:
cycle, the l l l 80A
held low.
a Sample-Hold
If
If
the line
the
will
4-50. The Scanner, if set at 10 channels,
of
10th channel reading; and the Storage,
channels,
be
channels. It
If
Scanner to continue scanning, not knowing if the Scanner
going to the Home position or to another reading.
going to the Home position, a Jump command would be
given, forcing another output cycle although no new data
has been taken.
is
pins 1 through 6 and the gate composed
through 13. This flip-flop
will
stop the 3480 from sampling after the 10
will
output the 10 channels and then allow the
This
is
prevented by the skip flip-flop IC34
is
"set"
by the Panel Transfer line
will
if
of
complete the
also set to 10
is
If
it were
IC34 pins
11
4-3
Page 28
Section IV
everytime an output cycle takes place.
valid reading must be taken before it
line from the
reset, in otherwords when one valid reading has been
counted by the Address
acknowledged.
4-51.
COMPUTER
4-52. The main function
change the timing sequence on the
acknowledges every trigger signal during the input and
output
This gate allows the Encode signal to recall data from the
MOS
Shift Registers during an output cycle only. Computer
Control
function for both the set and reset
Units Address Counter. Once the flip-flop
Counter, any Home Flag
CONTROL.
of
Computer Control Enable
cycles. Computer Control Enable goes to gate IC45.
Enable also goes to IC23, which
Once it
is
reset by the B data
Storage Flag
of
is
is
the gating
the Storage Flag
"set'', a
will
so
that it
be
is
Model l l l
Flip-Flop. This control allows the timing sequence to
properly acknowledge
is
4-53. For computer operation, each command
computer must be acknowledged by a single flag. This poses
one additional requirement on the
the
50th reading is taken under a normal sequence, the first
reading
only one trigger command; but a computer must
one to take the
output
to
between the input and the output cycles to alleviate this
problem. This
through 6 at the end
IC22 pins
control. The flip-flop stops one reading from being counted
through
normal timing sequence.
storage cycle
computer from causing a loss
is
automatically outputted. Normally this takes
of
the first reading. One false cycle
11
through 13. This
IC46 pin 12 and transferring a command to the
all
of
the trigger signals.
Storage, in that when
50th reading and one to command an
is
done by "setting" a flip-flop
of
each input cycle through the gate
is
done only in computer
By
skipping one reading, one extra
is
taken each cycle. But it prevents the
of
data .
of
give
is
generated
IC21
80A
the
two,
pins 1
"
'-
I
tf
'
...
1
1' I
'
'.
4-4
.j
:J
r
~
Page 29
Model l l l 80A
Section
V
·1
.1
SECTION
MAINTENANCE
5-1.
INTRODUCTION.
5-2. This section contains information for incoming inspection and troubleshooting
is
calibration
5-3.
EQUIPMENT
necessary for the l l l 80A.
5-4. The following equipment
performance
of
the l l l 80A:
3480A/B Digital Voltmeter
3481 A, 3482A, 3484A or 3485A plug-in unit
5050B
Oscilloscope, general purpose
5-5.
PERFORMANCE
5-6.
To
check the performance
ing inspection, it
is
to be made are the Data output on
modes; and Limits, Preset Triggers and Scanner operation
is
(if a 3485A
available) on the Storage mode (Storage
Enable line held low).
of
the l l l 80A.
No
adjustments or
REQUIRED.
is
required to check the
or
5055A Digital Recorder
CHECKS.
of
the l l l 80A for incom-
recommended that the minimum checks
IBCD
and Storage
V
checked with the Digital Recorder at the
Page
Connector shown on
3-1.
5-11. Basic Operation. Refer to Paragraph 3-6 and Figure
3-2 for basic operation with a digital recorder. Exercise
of
the Storage Limit lines to insure that the l l l 80A
store and output 10, 20, 30 , 40 and
Storage and Status Flags with the oscilloscope.
5-12. Preset Trigger Operation. Refer to Paragraph
Figure 3-5 for Preset Trigger Operation.
so
rate
at the time a Preset Trigger line
"X"
distinguished from the
Trigger. Exercise
that the input voltage to the 3480 may
is
grounded. This allows the
readings that occur before Preset Trigger to be
"Y"
readings occuring after Preset
all
three
of
the Preset Trigger lines.
5-13. Scanner Operation. Refer to Paragraphs 3-24 and
th
3-25 for operation wi
as
Enable line
well
the 3485A Scanner. The Scanner
as
the Storage Enable line must
grounded.
5-14.
TROUBLESHOOTING.
l l l 80A Storage
50
readings. Check the
Use
a slow trigger
be
changed
3-9
all
will
and
be
J
5-7.
IBCD
Check.
5-8. In this check, the Storage Enable line
allow the
l l l 80A to operate in the Isolated
is
left open to
BCD
(nonStorage) mode. The Scanner Units l.D., Data, Range (or the
Scanner Tens Channel I.D.), and function (or Scanner
Range) are checked with the Digital Recorder at the
l l l 80A Storage Connector shown on
BCD
5-9.
OUTPUT
Storage
CHECK
Check.
in the 3480A/B Manual.
5-10. In this check the Storage Enable line
of
allow Storage mode
operation. The Storage Units I.D.,
Page
is
3-1.
See
the
grounded to
Data, Range (or Scanner Tens channel I.D.), Function (or
1.D.
Scanner Range), and the Storage Tens Channel
are
Table 5-1. Troubleshooting.
I.
Data
Output
problem .
A.
Compare the data
1 .
If
they
Outguard
a.
*If a datum
ormer
b.
*If a datum
Note:
*
the
other
on
IBCD
and Storage modes.
both
have the
Flip-Flop
, coupling capacitor,
is
The
D4000
data lines.
same
on
A2.
is
always high, then the pulse transf-
always
low,
line
has
error, check the Data
or
flip-flop
then the fli
the opposite logic
is
bad.
p-flop
sense
is
bad.
5-15. The Troubleshooting Table
circuits to be checked for
I.
Data Output problem
II.
Isolated
III.
Storage control problem
five
BCD
5-1
is
an outline
major failure symptoms:
control problem
IV. Address problem
V.
Scanner-Storage problem
is
5-16. A Data output problem
Figure
7-10;
all
other problems
Figure 7-9. Decide whether the problem
Data output or in control on the
related to the circuits on
will
occur in the circuits on
is
strictly in the
IBCD
or Storage mode.
Other possible problem areas are in the output address and
five
Scanner-Storage operation. These
major problem areas
are further broken down into more particular problem areas
within the Troubleshooting Table.
2.
If
of
the Data
Storage mode, check the MOS
Memory
If
the Data
3.
error
A1.
B.
Front
panel readout
1 . Check the Panel Transfer Gate on A 1 .
Check the mainframe (3480) Reset, Test
2.
03480-66502
is
alright
in I BCD mode
Transfer Gate on A 1.
is
alright
in I BCD mode, check the Present Transfer Gate on
assembly.
in the Storage mode
has
an
error,
but
the
but
Shift
IBCD
has
Point
Register and
is
an
error
but
alright
No.
of
has
the
in
an
.
1, on
5-1
Page 30
Section V
Model l l l 80A
11.
I BCD
Control
A.
Preliminary Checks.
1. The
2. The
3. Check
problem.
3480
a.
Check
low.
b.
Check
low.
c.
Check the Pri
Clock
3480
sample rate. Check A21C36
==
1
ms~
(Figure 7-1) C. Pri
will
not
sample. D. Encode
that
Inhibit
that
Memory
nter
Oscillator
:=
2sOkH
z
l-3µs-ol
_n____n_
1
µs
-+--I
a.
If
the oscillator
circuit,
drive
on Al.
If
b.
Clock Gating
and A 1
a.
The
A21C38 pin 12. This
pins 1-6 and IC34 pins 4-6.
b.
The
Clock Gating
IC19
pins
the oscillator
IC33
pins 8 and
the
basic
Timing
bas
ic
Timing
timing
sequence is:
10and
is
Flip-Flop,
Table 5-1. Troubleshooting.
signal at pad
signal at
Hold
circuit,
is
not
running
pin
51
IC22
Figure 7-4.
or
8.
-i
is
not
running, check the
Flip-Flop,
11,
L30
, and
running
but
not
IC19 pins 12 and 13,
9.
Generator, Figure 7-2.
Cycle
is
started
is
gated
by
into
on
11180A
pin 4 on
not
Clock
IC33
gated, check the
a high level at
a pulse
gated
by
Turn-On
Oscillator,
pins 10-
by
A2
A2
L29,
IC37
the
13
is
is
Ill.
(Cont'd)
nter
Hold
problem.
1. Check the Printer
problem.
1. Check the Encode
Storage
Control
problem.
A. Unable
B.
C.
D. Storage Flag
E.
to
turn
on
1. Check
2. Check
Jump
1. Check
2. Check
3. Check basic
Limits
1.
2.
1. Check Storage Flag
2. Replace
Measurement
1. Check basic
that
amplifier-zero Storage override.
Command
1 µs.
7·2 .
problem.
If
Jump
If
IC29
Hold
A21C34
Storage Enable
problem.
IC33
monostable
Jump
flip-flop,
Timing
Command
is
alright,
problem.
A21C23.
Hold
Timing
flip-flop
and inverter I
Hold
circuitry
circuitry
Storage.
pin
11
circuitry
on
IC31 and IC32.
Generator Counter
works,
replace IC30.
in
IBCD
Problem.
Generator
shown on Figure 7-4 .
shown on Figure 7-8.
is
low.
This
is
the Scanner
on
Figure 7-2.
Jump
line.
Output
circuitry,
check IC29
mode.
C33
Limit
circuitry
pins 11-13.
, Measurement
pulse:
Figure
inverters.
=:
i]
']
L .
:]
5-2
A
B
R
T
CLK
B.
No
Storage Flag.
1. Check
2. Check the
3. Check the
Paragraph
4.
Check
5. Check the
_J
11
186A · 8 -
that
that
I
I
I
26~6
Memory
timing
2A2.
Turn-On
Storage Flag
signal at A21C48 pin 2
pulse at A21C24 pin 1. (4 µsec pulse).
Clock waveform at A21C24
signal at A21C24
flip-flop
and
pin
output
12
is
low.
pin
is
buffer
2.
high .
Dump
Hold
Counter
check
problem
Dump
checkout
at 1 kHz
Count
A21C35 and
Count
Hold
circuitry,
.
sample rate
pulse
is
pulse
Figure 7·6.
in
generated
IC34
.
at
IC46
IBCD
by
pin
mode.
the
12.
Timing
Generator
F.
1. Check
IV.
Address
Do
See
.
this
A.
The basic
and Decoding,
1. Check the
...
'l.' •
Page 31
..
J
. J
.1
Model 11180A
a.
b.
2. Check
3. Check
IC32
4.
Check D
count
5. Check Tens Address
36.
a.
b.
c.
If
not
present, check
If
Reset
at
the
Count
the
pin
8.
output
rate.
output
low
both
Counter
.
is
IC21 pins 1-6.
Count
bad, check
Flop
If
. 5 µs
negative edge
Check
If
work
alright,
pulse
pulse
at
IC32
Counter
pulse.
of D output
flip-flops
counts
Table 5-1. Troubleshooting. (Cont'd)
the
Reset pulse
check
Computer
at
A 1 IC37
at
It
in
past
pin
8.
the
Units
pin
12.
It
should be 1/
at
output
input
at
of
IC43
50
and
or
A21C19
Units
IC44
1/0
should be in sync
at
Control
Address
pads
Address
.
flip-flop
IC36
pin 6 .
Flip·
Counter
10
34,
35
pin 2 for
with
Counter
does
the
and
the
not
Section V
Major
Scanner-Storage
1.
"Odd" * number
output
with
with
Scanner
2.
Skip
loss:
limit,
the
Storage
3.
Amplifier-Zero
fier
(the
given
scanned.
4.
a
Sync loss: Scanner reading (Channel
to
*An
"odd"
Storage
limit.
B.
"Odd"
1. Check
number
limit
zero reading.
last reading address
only
Storage address .
Scanner
number
that
problems
channel
the
Scanner
Control
with
the
Storage
of
.
loss: no
Note: the
when
an
limit
channel scan
the
Scanner
.
scan
limit
printings
printout
"odd"
with
Control
less
limit
Scanner
is
no
Enable signal
output
number
with
no
than the Storage
true
(low).
equal
to
does
not
of
the
Scanner
amp
of
number)
one
output.
not
line
00
of
equal
number
Enable
output:
the Scanner
zero reading
printed)
readings
is
equal
not
low.
limit
the
ampli-
equal
to
the
no
is
is
'.
:.
. 1
.. -.l
..
]
j
B.
If
A1,
A 1
IC29
IC18
C. Preset Trigger
1. Check
produce a low
2. Check
3. Check
4.
Check·
1-6.
5. Check
D.
Input
1. Check
2.
Replace
E. Status Flag
1. Check
2. Check
IC38
V.
Scanner-Storage
1) Check
2) Check
81,
and
.
Cycle
pins 3-6.
the
pin 13.
NOTE:
and enables Measurement
Cl
IC30, L25
input
the
for
the
the
Hold
at
input
IC44.
problem.
1/0
buffers
problem
Reset pulse
This
the
Preset and Reset gating
or
01
problem.
monostables IC41 and
pulse
Preset and Reset gating
a 1
µslow
Input
Cycle
Units
Counter
problem.
pads
flip-flop
IC18
.
at
Reset pulse ends
is
bad
at
the
through
of
Preset pulse
52
IC44
pins 8 and
L27,
approximately
Hold
override
preset
at
and
53.
.
9.
A21C45
Jump
Hold
command
Storage
and A21C15
IC42
1 µs .
IC40-42.
at
A21C20 pin
flip-flop
A 1 IC31
IC37
pins
pin
8 and I
Command
.
IC40-42.
output,
check
through
. Each should
8.
IC20
pin
6.
11-13,
C41
pins
and
2. Check the Scanner
a.
It
shou Id go
b.
It
should
3. Pin
12
of
problem
4. Check gate
13
Scanner
5.
An
C.
Skip
1. Check
the
2. Check
3. Check
taken.
D.
Amplifier-Zero
1. Check
13,
2. Check LI 1.
Sync loss:
E.
1. Check
major
2. Check
IC39
IC39
if it
should be high;
Home
"odd"
loss.
for
output
the
for
Amplifier
and gate
"Odd
problem
output
pin
7
pin
10
Home
low
at
produce
A1-IC34
is
A2-IC31 pins 8
scan
a high level
cycle .
Skip
reset
loss.
IC34
a high level at A
should be high.
not
high.
pin
Flag.
should
cause a
flip-flop A 1-IC34
of
the
Zero
pins 8
number
.
pulses
at A 1-IC39
Flag.
the
end
of a scan
through 13. Pins
10
should have a high pulse
jump
on
the Panel Transfer
Skip
flip-flop
flip-flop A 1-IC35
through
channel
.
1-IC34
See
"Skip
command.
pins 1
through
after
10.
scan
with
pins 7 and
pin 13.
loss'
9,
12 and
line
6.
one reading
pins 8
through
no
output"
10
.
major
at
during
is
]
A.
Check
then
decide
follows:
for
proper
on
the
operation
major
problem
with a 3481,
with
82
3485A
or
84
operation
plug-in,
as
Pin 7 pulse
output
cycle. Pin
Flag.
is
triggered
10
by
pulse
the
Panel Transfer
is
triggered
by
the
at
the
Scanner
end
of
an
Home
5-3
Page 32
I '
:l
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. . ' . ,
..
, . ' .
~
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~
Page 33
Model l l 180A
,.
l
.-.:
SE
CTI
0 N VI
Section VI
~:
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REPLACEABLE
6-1.
INTRODUCTION.
6-2
. This section contains information for ordering replac
ment parts. Table
reference
de
part number
notes, and provides the following:
a. Total quantity used in the instrument (TQ column).
The total quantity
number appears.
b. Description
below.)
c. Typical manufacturer
(See Appendix A for list
d. Manufacturer's part number.
Miscell
6-3.
6-1
lists parts in alphameric order
of
signators and indicates the description,
of each part, together with any applicable
of
a part
is
given the first time the part
of
the part. (See list
of
the part in a five-digit code.
of
manufacturers.)
aneous parts are listed at the end
..
.......
...
. .
...
.
.. compositi
. .
e single-throw
..
enc
effect
. gallium arsenide
,.
.
.....
.
...
cyc
le(s)persecond)
.. ..
.....
.
.......
.
...
........
misc e
lectronic
silver
.aluminum
.ampere(s)
go
c
apa
cito
..
ceramic
coeffic
ient
..
common
connection
. .
deposited
.electrolyti
apsulated
. . . farad(s)
transistor
....
fixed
w+9 hertz
..
guard(ed)
.germanium
.ground(ed)
henry(ie
. . mercury
. asse
mbly
mot
..
batt
capacitor
diod e
delaylin
tamp
part
..
fuse
ery
A
g.
Al
A.
Au.
cer.
coef . . . .
com.
co
mp .
dop
DPDT
DPST.
elect.
encap. . .
F
FET field
fxd .
..
°""'
GHz
..
gd
Ge
....
H .
H
g.
Hz
A .
B . .
BT.
c
CR
DL .
DS.
E
F .
.
. .
double-pole double-throw
...
double-pol
: : : :
~-~henz
...
hertz(
........
of
abbreviations
of
Table 6-1.
ID
imp
g
incd
ld
ldl
.
r
kHz
L .
on
\in .
log.
mA
. . ...
MHz . . .
Mn . .
metflm
c
mfr
mtg
mV
. . .millivo
µF
. .
µs . .
µV
. .
my . .
oA
NC
.
No.
s)
NO.
NPO.
Prefix
~
..
mo"
kjJo
h
ecto
....
deci
FL
.
or
HR . . . . . he
IC
J . . . . .
K
e
L
M . me
MP mechanical part
p
...............
milliampere(s)= 10- 3
........................
.. ..
nanoampere(s)
..............
(zero
Symbols
Mo
Kor
.........
. . . . . . . .
kilohm(
. . kil
..
megahertz
megohm(
............
..........
.microvolt(s)=
.
.................
..
temperature
r Meg
k
h
..
............
..
.....
ohertz=
........
.... . . linear taper
lt(s)= 10- 3 volts
....... Mylar@
....
negative positive ze
..
..
6-4.
e-
their
-hp-
6to your local Hewlett-Packard Field Office. (See Appendix
B
Hewlett-Packard part numbers. Include instrument model
and serial numbers.
6-6.
6-
ABBREVIATIONS
insldediame1er
..
. .
impregnat
inc
andescent
.insulation(ed)
s) = J0"'"3 ohms
10+3 he
inductor
logarithmic
amper
= I
0+-6
s)"'
10+6
..
.. metalfilm
.
..
manufacturer
. millis eco
mounting
...
microfarad(s)
microsecond(s)
10 -6 volts
= I o
-9
amperes
normally
no rmally
coefficient
DECIMAL
Multiplier Prefix
1012
10'
10•
11>3
10'
10 fe
10-
l
..
int
egratedcirc
. . . relay s
.....
inductor
..
........
ed
rtz
tap
er
es
her
tz
ohms
nd
closed
neon
ope
n
ro
)
MULTIPLIERS
DESIGNATO
filter
ater
uit
jack
ter
plug
n .
obd
OD.
p
pA.
pF
"
piv
p/o .
poly
'"'
po•
,.,
ppm
prec
R .
Rh
"
·~
~
•I
Q .
QCR
R
RT .
T
TB.
TC.
TP
.
.......
·
RS
PARTS
ORDERING
5.
To obtain replacement parts, address order or inquiry
far list
NON-LISTED
7.
To
obtain a part that
a.
Instrument model number.
b. Instrument serial number.
c. Description
d. Function and location
nano
secon
.
. . .
not
separately
....
......
. . ...........
: :
..
. . ....
precision(temperature
coefficie
bility,and/ortolerance)
.............
.... .
S
ymbo
ls Multiplier
.,
cen
ti
milli
micr
o
pico
mto
INFORMATION.
of
office locations.) Identify parts by their
PARTS.
is
not listed, include:
of
the part.
of
the part.
..
d(s) = 10-9
seconds SPOT
replaceable
..
ohm(s)
order
by
description
. o
utside diameter
. .
.....
picoampere(s)
. .
printed
circuit
0
picofa
rad(
s)
10 - 12
farads
peak inverse voltage
part
position(s)
polystyr
.potiomete
.... peak-to·peak
.par
ts
per million
nt
, l
ongtermsta-
. . res
.rhodium
root-mean-squar
...
rotary
.
selenium
......
..
section(
........
silicon
. .........
10-2
10
- 3
10 -6
10
-9
10
- 12
10-15
10
- 18
..
transistor
. .
transistor
-diode V .
. .
.. resistor
thermistor
.switch x .
transformer
..
terminal
board
... thermocouple
..
test
point
peak
istor
slide
SPST
T•
TC.
TI02
tog
IOI
trim
TSTR.
V .
of
vu
ene
vdow
r
w.
w/
wiv .
w/o
e
s)
TS
W.
XDS
XF .
y
z ..
.
..
..
. .
.
..
..
..
. . single·pole double·throw
. .....
single-polesingle·throw
t
empe
rature
..
titani
....
..
alt
ernating
workin g voltage
dire
ct current
working
.. worki
ng inverse v
. . .
...
op
timum
value
factory,averagevalu
shown
(part
may b e
.no
standard
assigned(selected
@
Dupont
..
......
terminal
~~c~~~
tub
photocell,
.....
::. :::
. .... fuseholder
. . .
tantalum
coefficie
um
dioxid
...
toleranc
trimm
transistor
. .
volt(s)
current
.variable
voltage
..
watt(s)
. .
without
. . wire
wound
selected
omitte
type
number
special t
de Nemours
e, ne
on
..c
.
..
iamph
.c
. .
network
toggle
with
olt
strip
bulb,
etc
abl
socket
older
rystal
nt
e
e
er
age
at
e
d)
or
ype
.
e
6-1
Page 34
Secti
on VI
Table
6-1.
Replaceab
Model
1118
0A
le
Par
ts
:l
Reference
Designation
Al
Al
Cl
AlC
2
AlC3
AlC4
AlC
5
AlC6
AlC7
AlC
8
AlC9
AlC
10
AlCll
AlC12
AlCl3
AlC14
AlCl5
AlCl6
AlC17
AlCl8
AlC19
AlC20
AlC21
AlC22
AlC23
AlC24
AlC25
AlC
26
Al C27
AlC
28
AlC29
AlC
30
AlC31
AlC3
2
AlC3
3
AlC34
AlC3
5
AlC36
AlC37
AlC38
AlC
39
A 1C4 0 01 6 0-0 99 0 1
AlC41
AlC4
2
AlCRl
All
Cl
AllC2
AllC3
AllClt
AllC5
AllC6
AllC7
AllC8
AllC9
All C 10
AllCll
Al1Cl2
Al1Cl3
AllCllt
Al1Cl5
AllC 16
All
Cl
7
All C 18
Al1Cl9
'
All C20
AllCZl
AllC22
AllC23
AllC24
All
C25
AllC26
All
CZ
7
A
l!
C 28
All
C29
All
C30
AU
CH
All
C32
HP Part Number
11180-66501
0160-0300
0160-0300
'
)160-0300
0160-03
00
~160-0300
0160-030
0
0160-0300
0
016
0160-0300
0
0160-0300
0160-0300
0160
0160-0300
0160-0300
0160
0160-0300
0160-03
0
0160-030
0160-0300
0160-0300
01
0160-0300
0
0160-030
0160-0300
0
0160-0300
0
0160-0300
018
0180-0197
0150-006
0
0
0
0
0160-015
1901-0
1820-0728
1820-07
1820-072
1820-0728
1820-0728
1820-072
1820-072
1820-0728
1820-072
1820-0728
1820-072
1820-0728
1820-03"9
1820-0349
1820-0349
1820-0349
1820-0349
1820-0349
1820-0349
1820-0349
1820-0349
1820-0349
18
1820-0349
1820-0349
1820-0349
18
1820-0349
1820-0349
1820-0349
1820-0586
18
0
160-0300
160-030
0
0-0300
160-0300
- 03
00
- 0 3
00
00
160-0300
0
60-03
00
160-0300
0
160-0300
160-0300
0-1701
4
160-0161
160-01
57 1
160-015
3
160-
2 9 6 4 2
3
040
28
8
8
8
8
8
20-0349
20-0349
20-0322
Oty
38
1
11
12
20
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