This product has been designed and tested according to International Safety Requirements. To
ensure safe operation and to keep the product safe, the information, cautions, and warnings in this
manual must be heeded. Refer to Section Iand the Safety Summary forgeneral safety considerations
applicable to this product.
SAFETY
CERTIFICATION
Hewlett-Packard Company certifies that this product met its published specifications at the time of
shipment from the factory. Hewlett-Packard further certifies that its calibration measurements are
traceable to the United States National Bureau of Standards, to the extent allowed by the Bureau's
calibration facility, and to the calibration facilities of other International Standards Organization
members.
WARRANTY
This Hewlett-Packard product is warranted against defects in material and workmanship for a period
of one year from date of shipment. During the warranty period, Hewlett-Packard Company will, at its
option, either repair or replace products which prove to be defective.
The cathode-ray tube (CRT) in the instrument and any replacement CRT purchased from HP are also
warranted against electrical failure for a period of one year from the date of shipment from Colorado
Springs. BROKEN TUBES
NOT INCLUDED UNDER THIS WARRANTY.
ANDTUBES WITH PHOSPHOR ORMESH BURNS, HOWEVER, ARE
For warranty service or repair, this product must be returned to a service facility designated by HP.
However, warranty service for products installed by HP and certain other products designated by HP
will be performed at Buyer's facility at no charge within the HP service travel area. Outside HP
service travel areas, warranty service will be performed at Buyer's facility only upon HP's prior
agreement and Buyer shall pay HP's round trip travel expenses.
For products returned to HP for warranty service, Buyer shall prepay shipping charges to HP and HP
shall pay shipping charges to return the product to Buyer. However, Buyer shall pay all shipping
charges, duties, and taxes for products returned to HP from another country.
LIMITATION OF WARRANTY
The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance
operation outside of the environmental specifications for the product, or improper site preparation or
maintenance.
NO OTHER WARRANTY IS EXPRESSED OR IMPLIED. HP SPECIFICALLY DISCLAIMS THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE.
THE REMEDIES PROVIDED HEREIN ARE BUYER'S SOLE AND EXCLUSIVE REMEDIES. HP
SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, WHETHER BASED ON CONTRACT, TORT, OR ANY OTHER
LEGAL THEORY.
by Buyer, Buyer-supplied software or interfacing, unauthorized modification or misuse,
EXCLUSIVE REMEDIES
Product maintenance agreements and other customer assistance agreements are available for
Hewlett-Packard products.
For any assistance, contact your nearest Hewlett-Packard Sales and Service Office. Addresses are
The followlng general safety precautlons must be observed
and repalr of thls Instrument.
elsewhere
Instrument. Hewlett-Packard Company assumes no
wlth these
GROUND THE INSTRUMENT.
To mlnlmlze shock hazard, the Instrument chassls and cablnet must be connected to an electrlcal
ground The Instrument
must
to two-contact adapter
(safety ground) at the power outlet The power jack and
lnternatlonal Electrotechnlcal Comm~ss~on (IEC) safety standards
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE.
Do not operate the Instrument In the presence of flammable gases or fumes
electrlcal Instrument
KEEP AWAY FROM LIVE CIRCUITS.
Operating
adjustments must be made by quallfled malntenance personnel Do not replace components w~th
power cable connected Under certaln condltlons, dangerous voltages may exist even wlth the
power cable removed To
touchlng them
In
thls manual vlolates safety standards of deslgn, manufacture, and Intended use of the
requirements.
elther be plugged Into an approved three-contact electrlcal outlet or used wlth a three-contact
wlth the
In such an
personnel must not remove Instrument covers Component replacement and Internal
Fallure to comply wlth these precautlons or wlth speclflc warnlngs
llablllty for the customer's fallure to comply
1s equlpped w~th a three-conductor ac power cable The power cable
grounding
environment
avold lnjurles always
wire (green) flrmly connected to an electrlcal ground
constitutes
a deflnlte safety hazard
disconnect
durlng
matlng plug of the power cable meet
all phases of
power and discharge clrcults before
operation,
Operation
servlce,
of any
DO NOT SERVICE OR ADJUST ALONE.
Do not attempt Internal servlce or adjustment unless another person capable of
and
resuscitation
USE CAUTION WHEN EXPOSING OR HANDLING THE CRT.
Breakage of the Cathode-ray Tube (CRT) causes a hrgh-veloclty
To prevent CRT ~mploslon, avoid rough handling or jarrlng of the Instrument Handllng of the CRT shall
be done only by
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT.
Because of the danger of lntroduclng add~tlonal hazards do not Install
any
unauthorized
Sales and
DANGEROUS PROCEDURE WARNINGS.
Warnings,
manual lnstruct~ons
Serv~ce Offlce for servlce and repalr to ensure that safety features are malvtained
IS
present
scattering
quallfled malntenance personnel uslng approved safety mask and gloves
modlflcation of the ~nstrument Return the Instrument to a Hewlett-Packard
such as the example below precede potent~ally dangerous procedures throughout thls
contained
In the warnings must be followed
WARNING
of glass fragments (~mploslon)
substitute
rendering
parts or perform
first ald
u
Dangerous voltages, capable of causing death, are present in this instrument.
Use extreme caution when handling, testing, and adjusting.
Repair
CRT Removal Procedure
Troubleshooting
Service Sheet
Vector Processor
X-Y Stroke Generator
Low Voltage and High Voltage
Memory Circuit
Figure Title
1349A Digital Display
1349A Dimensional Detail 1-5
Power Connector for 1349A 2-2
1349A
Read Command Timing
Write Command Timing
Refresh Mode Selection
Synchronous Refresh Example
Asynchronous Refresh Example
Vector Drawing Area
Graphing Example
Example of Character Spacing
Drawing a Square on the Display
Drawing Two Horizontal Lines on
1349A Power Connections 4-2
1349A Primary Test Pattern 4-2
1349A Command Check-out 4-3
Memory Fail Test Pattern 4-3
1349A Focus and Resolution Test
1349A Assembly Location
Low Voltage Power Supply
High Voltage Power Supply
1349A Primary Test Pattern
1349A Primary Test Pattern
1349A/D Primary Test Pattern
1-2. This Operating and Service Manual contains
information required to install, operate, test, adjust, and
service the HP Model
1-3. Listed on the title page of this manual is a
microfiche part number. This number can be used to
order 4x6-inch microfilm transparencies of the manual.
Each microfiche contains up to 96 photo-duplicates of
the manual pages. Themicrofiche package also includes
the latest Manual Changes supplement.
1349A/D Digital Display.
1-4. SPECIFICATIONS.
Instrument specifications are listed in table 1-1.
1-5.
These specifications are the performance standards or
limits against which the instrument is tested. Table
typical characteristics included as additional informa-
tion for the user.
1-3 and are not specifications but are
1-2
1-6. SAFETY CONSIDERATIONS.
To prevent personal injury, observe all
safety precautions and warnings stated on
the instrument and in this manual.
1-7.
This product is a Safety Class 1 instrument. Review
the instrument and manual for safety markings and
instructions before operation. Specific warnings, cautions
and instructions are placed wherever applicable. Refer
to the Safety Summary in the front of this manual and to
Sections
These precautions must be observed
11, V, and VIII for further safety precautions.
duringall phases of
I
operation, service, and repair of this instrument. Failure
to comply with these precautions or with specific
warnings elsewhere in this manual violates safety
standard of design, manufacture, and intended use of
this instrument. Hewlett-Packard assumes no liability
for the customer's failure to comply with these
requirements.
1-8. INSTRUMENTS COVERED BY MANUAL.
Attached to the instrument is a serial number tag.
1-9.
The serial number is in the form:
parts; the first four digits and the letter are the serial
prefix, and the last five digits are the suffix. The prefix is
the same for all identical instruments. The suffix,
however, is assigned sequentially and is different for
each instrument. The contents of this manual apply to
instruments with the serial number
under SERIAL NUMBERS on the title page.
An instrument manufactured after the printing
1-10.
of this manual may have a serial number prefix that is
not listed on the title page. This unlisted serial number
prefix indicates that the instrument is different from
those described in this manual. The manual for this
newer instrument is accompanied by a Manual Changes
supplement. This supplement contains "change information" that explains how to adapt the manual to the
newer instrument.
1-11.
In addition to change information, the supplement may contain information for correcting errors in
the manual. The supplement for this manual is
identified with the manual print date and part number,
both of which appear on the manual title page.
1-12. For information concerning a serial number
prefix that is not listed on the title page or in the Manual
Changes supplement, contact your nearest HewlettPackard office.
16-Bit TTL Data Bus Pos Logic
Low Memory Write
Low Data Available
Low Memory Read
Low Ready for Data
Low Device Select
Ext Refresh Synchronization
Low Transfer Acknowledge
Logic Ground
Disconnect Sense. Signal connector off activates
storing the X-increment once, requiring only new
values for succeeding points.
lx
Character approximately 2mm high.
SELF TEST
4 Programmable Character Orientations:
270' (CCW) relative to horizontal.
VECTORS
Random Vector Plotting:
2048 by 2048 points. alternate test pattern. When the connector is
Line Types:
Solid Line shorted, the alternate pattern may be used to
Solid line with intensified end points verify CRT resolution and allow calibration of
Short dashed line
Long dashed line is installed
Dots performs a memory test.
Addressable resolution internal connector is provided for activation of an
0, 90, 180,
Self Test is invoked by disconnecting the
I/O connector with power applied. The Test Pattern verifies
that the
imately 140
full brightness at 60 Hz refresh rate, 7 by 7 cm, 50
line raster, 50% duty cycle.
Cd/sq. m at 1.9 mm/ps writing speed,
response to digital commands from a user processor.
1349D contains an 8K word refresh memory which
The
enables the display to refresh the picture without
support from the user processor. The
refreshed by the user.
1349A/D have an addressable resolution of 2048
The
by 2048 points which allows display of very high
quality images, composed of straight or curved lines.
Curved lines are formed by a series of short straight
vectors joined end to end. The unit has programmable
writing speeds and programmable intensities. Vectors,
regardless of length can be drawn at constant speed so
that the intensity does not vary from vector to vector.
For on screen labeling and identification, the
have a built-in set of ASCII characters. The 1349A/D
receive just one word from the user processor and all
the vectors necessary to form one character are
automatically produced from ROM.
1-15.
1-16. The following accessories are supplied with the
1349A/D:
ACCESSORIES SUPPLIED.
One Operating and Service Manual.
1349A must be
1349A/D
1-17.
RECOMMENDED TEST EQUIPMENT.
1-13. DESCRIPTION.
1-18. Equipment required to test and maintain the
1-14. The Hewlett-Packard Models
are 20.8 cm (approx. 9 in.) Display Components. Both equipment may be substituted if it meets or exceeds the
produce vector graphics on their display screens in critical specifications listed in the table.
Instrument
Monitor Oscilloscope
Digital Voltmeter
1000:l Divider
10:l Divider Probe
(Q~Y 2)
Power Supply
1
Signature Analyzer
-
P = Performance test
I
I
HP Model 1740A
HP Model 3466A
HP Model 34111A
HP Model 10041A
HP Model 633153
HP Model
A = Adjustment
1349A and 1349D 1349A/D Displays is listed in table 1-4. Other
Table
1-4.
Recommended Test Equipment
Recommended
Model
(supplied with
model
1740A)
5005A
Required Characteristics
Bandwidth: 100 MHz
lnput
2:
50 ohms AND 1 Mohm shunted by
approx. 20 pf.
Voltage Rating: -15V to 250V
Accuracy: 0.1
lnput Resistance: 10 Mohm
Voltage Rating: 12 kV
lnput Resistance:
This section provides installation instructions for
2-2.
the Model
includes information about initial inspection, damage
claims, preparation for use, and storage and shipment.
1349A/D Digital Displays. This section also
2-3. INITIAL INSPECTION.
2-4. Inspect the shipping container for damage. If the
shipping container or cushioning material is damaged,
it should be kept until the contents of the shipment
have been checked for completeness and the instrument
has been checked mechanically and electrically. The
contents of the shipment should be as listed in the
"Accessories Supplied" paragraph in Section I. Procedures for checking electrical performance are given
in Section IV. If the contents are incomplete, if there is
mechanical damage or defect, or if the instrument does
not pass the Performance Tests, notify the nearest
Hewlett-Packard office. If the shipping container is
damaged, or the cushioning material shows signs of
Table
2-1. 1349A/D
stress, notify the carrier as well as the Hewlett-Packard
office. Keep the shipping material for carrier's inspection.
The HP office will arrange for repair or replacement at
HP option without waiting for claim settlement.
2-5. PREPARATION FOR USE.
WARNING
u
Read the Safety Summary in the front of
this manual and the "Safety Considerations" paragraph in Section I before installing or operating this instrument. Before any
connections are made to the instrument, the
chassis must be connected to a safety
ground.
2-6. POWER REQLIIREMENTS.
2-7. The 1349A/D requires the following power
supplies for proper operation:
A 6-pin connector (Molex 09-50-3061 or equivalent)
is required to mate with the rear panel power connector
(see figure 2-1).
2-10.
1/O CONNECTOR.
A 26-pin connector (ANSLEY 609-2601M or equivalent) is
required to mate with the rear panel connector. The connector is wired according to figure 2-2. It is recommended
that the
The purpose of the Analog Output jacks on the X-YZ/Stroke Generator (Al) board is to connect an
external X-Y-Z display. The output signals can drive
p-p into 600 ohm loads. The bandwidth of the external
X-Y-Z display should have the following bandwidths:
X-Y Axis: >=3 MHz
Z Axis: >=lo MHz
The interface cables should not exceed
length. Use the following table for interfacing:
A1J3
A1J4
A1J5
........
.......
.......
Z AXIS OUTPUT
Y AXIS OUTPUT
X AXIS OUTPUT
(X-Y-Z).
1V
1.83m (6 ft) in
2-12. OPERATING ENVIRONMENT.
2-13. Temperature.
in temperatures from
The airflow recommendations stated above
must be adhered to in order to prevent
damage to the instrument.
The 65"
reflects the maximum allowable operating
temperature with the
the ambient temperature of the system
housing. It is recommended that a minimum
of .84
around and through the instrument to ensure
that the maximum operating temperature of
65"
Ambient temperature measurements should be taken at
several points in the instrument. Use the following information as a guide for making these measurements:
Measure temperature at:
Focus Gain Adjustment.
and the Memory Board (A5) near
C
m3/min (30 ft3/min) of air flow is forced
C
(+14g0 F) is not exeeded.
a. Between the High Voltage cover and
b. 0.64 cm (0.25 in.) above
c. Between Vector Processor Board (A2)
d. 0.64 cm (0.25 in.) above AlU23.
The instrument may be operated
0" C to f65" C (+32" F to 149" F).
NOTE
(+
149" F) temperature specification
1349A/D enclosed, not
A4R31.
A2U16.
2-14. Humidity.
environments with humidity up to
instrument should also
extremes which cause condensation within the
instrument.
2-15. Altitude.
altitudes up to 4 600m (15 000 ft).
The instrument may be operated in
95%. However, the
be
protected from temperature
The instrument may be operated at
2-16. STORAGE AND SHIPMENT.
2-17. Environment.
shipped in environments within the following limits:
Temperature
Humidity up to
Altitude
The instrument should also be protected from temperature extremes which causes condensation within the
instrument.
The instrument may be stored or
-40" C to $70" C (-40" F to +158" F)
95g1 relative humidity at
+50° C (+122" F)
15 300m (50 000 ft)
2-18. PACKAGING.
2-19. Original Packaging.
identical to those used in factory packaging are
available through Hewlett-Packard offices. If the
instrument is being returned to Hewlett-Packard for
servicing, attach a tag indicating the type of service
required, return address, model number, and full serial
number. Also mark the container FRAGILE to ensure
careful handling. In any correspondence, refer to the
instrument by model number and full serial number.
2-20. Other Packaging.
tions should be used for repacking with commercially
available materials.
a. Wrap instrument in antistatic plastic. (If shipping
to Hewlett-Packard office or service center, attach a tag
indicating type of service required, return address,
model number, and full serial number).
b. Use a strong shipping container. A double-wall
carton made of 350-pound test material is adequate.
c. Use a layer of shock-absorbing material 70 to 100
mm (3 to
instrument to provide firm cushioning and prevent
movement inside the container. Protect control panel
with cardboard.
d. Seal shipping container securely.
4
inches) thick around all sides of the
Containers and materials
The following general instruc-
The surface temperature near AlU26 and AlU33
typically may be +50° C (+12Z0 F) or more above the
ambient temperature. It is therefore recommended that
heat-sensitive devices or circuits not
proximity to these points.
3-2. The purpose of this section is to give detailed
information concerning the operation and programming
1349A/D. It includes a list of the programming
of the
instructions and a section containing a brief
explanation of "bit programming". The end of this
section contains several programming examples.
WARNING
SHOCK HAZARD
Before operating the instrument, connect the
chassis of the display to a safety ground in
the system.
3-3. SIGNAL LINE DEFINITIONS.
DO-Dl5
DO through Dl4 are the vector data lines (TTL
positive logic).
instruction. When
recognized as a memory command. When
"0" then all the input data forms the picture.
DISCONNECT SENSE
This line must be grounded to the display chassis
when the data lines are active. The internal
Performance Verification pattern will be displayed
if the 26-pin connector is disconnected.
SYNC
External display refresh synchronization signal
line. The line provides an external refresh clock
when external sync mode has been selected via a
jumper wire on the Vector Memory board.
LXACK
Acknowledge signal line. When low, this line
indicates that the Vector Memory has completed
the Read or Write operation requested by the user
processor.
Dl5 is used as a Vector Memory
Dl5 is a"1" then theinput data is
Dl5 is a
Ill
LDS
Device Select signalline. When low this line enables
the Vector Memory to communicate with the user
processor
LWR
Memory Write signal line. When low, this line
indicates that the 16-bit Data Bus contents
written into either the current Vector Memory
location
(D15=1).
LRD
Memory Read signal line. When low, this line
indicates that the contents of the current Vector
Memory location (as specified by the User Address
Pointer) are to be placed on the 16-bit Data Bus for
transmission back to the user processor.
Whenever a Vector Memory location has
been either written into or read from by the
user processor, the User Address Pointer
auto-increments to the next Vector Memory
location (address).
3-4. HANDSHAKE TIMING FOR 1349D.
The TTL digital interface to the Vector Memory (1349D)
is compatible with most microprocessor peripheral
interface adaptor chips (the Motorola
Vector Memory digital interface consists of:
1. A 16-bit bidirectional Data Bus.
2. A Read Signal line LRD (input).
3. A Write signal line LWR (input).
4. A Device Select signal line
5. An Acknowledge signal line LXACK (output).
6. An External display Synchronization signal line
SYNC (input use is optional).
Each time that the picture is redrawn by the 1349D, the
display is refreshed. This prevents the phosphor light
output from expiring. The refresh sync signal may be
provided by either the internal refresh circuit, or an
external source. To select the required mode of operation
for refresh mode, set the
Memory Board (A5) as shown in figure 3-3.
INTERNAL SYNC. When the jumper is
Internal position, an on-board oscillator
provides sync pulses at approximately a
user processor can send all picture producing data to the
Vector Memory at one time. The Vector Memory will
then continuously refresh the display screen by
redrawing the picture at regular intervals. This reduces
overhead time for the user processor.
EXTERNAL
supplied from an external source in the user system via
SYNC.
Int/Ext switch (A5S1) on the
ir, the
(A5U1)
60
Hz rate. The
Sync
pulses (?TL)
must
be
the SYNC input signal line. This signal is useful when
the display is used in electromagnetic fields which can
cause the picture to "swim". Synchronizing the display
with the interfering signal can stabilize the picture.
3-6. REFRESH MODES FOR 1349D.
The Vector Memory sends its data to the Vector
Processor (VPC) each time the picture is to be drawn on
screen. Data is send to the VPC either via synchronous
mode or free running mode.
SYNCHRONOUS MODE.
Vector Memory waits until a synchronizing pulseoccurs
before it will begin its next data output cycle to the
1349A/D. Synchronous refresh mode is entered when
the Refresh Pointer equals 8191. After sending the
contents of address 8191 to the VPC, the Vector Memory
waits for the next sync pulse before starting a new
refresh cycle at address
Pictures A and B will be displayed atan even brightness
FREE RUNNING MODE. Free Running mode is when
the picture cannot be drawn in the time interval between
sync pulses. The memory circuit automatically enters
this mode whenever a sync edge arrives before the
refresh counter reaches its highest address (8191). In
this mode, the memory will not wait for a sync edge
when it finishes the picture, but will immediately start
drawing the picture again.
This sync override feature allows all simple pictures to
be displayed at an even brightness (say 60 Hertzrefresh
rate), and complex pictures to be displayed at a level of
brightness that depends only on the time it takes to draw
the picture on the display.
picture
drawing time
picture
drawing time
Figure
3-5.
C
D
uait time while Vector Memory
increments to address 4095
(no
jump1 slows refresh rate
Asynchronous Refresh Example
start redrawing
\
Jump to 4095
await
time
-\
start redrawing
P
The Vector Memory can be tested by the user processor
as part of power-on self test routine. For example, first
write all zeros to all words. Then "chase a one" through
memory to check each cell. Also, the User Address
Pointer can be checked by writing data sequentially
through the memory and then using the Pointer
Instruction to move the pointer, and reading the
contents of the word selected by the pointer. BE
CAREFUL
pointer) will not be written into the memory and
OllXXXXXXlXXXXXX (set condition) is illegal.
3-8. 1349AlD COMMAND SET.
-
1lXXXXXXXXXXXXXX (set address
3-7. MEMORY
When the Vector Memory is powered up, its contents are endpoints in 2048 by 2048 cartesian coordinate system.
in an unknown random state. There are several methods The origin
of memory initialization.
One method is to fill the entire memory with ''jump to
8191" instructions. The benefit of using this method of
initialization is that as the user fills the Vector Memorv
with picture information, the Vector Memory will
always "jump to 8191" after drawing the picture, no
matter how many words are used to form the picture.
This ensures that the picture will be displayed at the
optimum refresh rate.
Another way of initializing the Vector Memory is to
write all zeros to all words. This data will be sent to the
1349D, but will draw nothing on screen (effectively a noop). Each "no-op" will take about one microsecond, thus
8000 "no-ops" (8000 words in Vector Memory) will use up
to 8 milliseconds of display time, producing a dimmer
picture if in the free running mode.
INITIALIZA'rION.
The 1349A/D creates pictures by a technique called
random vector plotting. A line is defined by its
(0,O) is in the lower lefthand corner. All
points are positive reference. The
each vector by starting point, ending point, intensity
level,
The Set Condition command controls theintensity level,
the line type, and the writing speed of vectors drawn on
the CRT.
B14 = 1, B13 - 1: SET CONDITION COMMAND.
With both MSBs (Most Significant Bits) set to one, the
1349A/D is commanded to draw all following vectors
according to the configuration commanded until
changed by subsequent condition command.
NOTE
A
one (1) = TTL high; a zero (0) = TTL low.
X=
DON'T CARE
B6 MUST be zero.
B14=1, B13-1 : Set display configuration according to choices
specified for intensity, line type, and writing speed.
1
11 1 10
1
intensity
I
When the line type "solid line with intensified endpoints"
is selected, the intensity of the endpoints may vary due
to optical illusion. As lines are linked together the
intensity of the point where one line ends and the next
line starts is a function of the angle separating the lines.
The closer the angle is to 180 degrees, the brighter the
point. The closer the angle is to zero degrees (absolute),
the dimmer the point.
PLOT COMMAND (B14
With both MSBs set to zero, the
to move the display beam to a specific X-Y location each
time that a Y coordinate is received. The beam position
may be moved with the beam either turned off or turned
on. The Plot command will draw all vectors according to
the display configuration established by the last Set
Condition command received by the
time that a Y coordinate is received, the pen status
(beam on or off) for the beam movement is established.
Also, the X-Y location to be moved to is formed from the
last X coordinate received and the current Y coordinate.
For example, to draw a vertical line send the
(1) Plot Command - X value; (2) Plot Command - Y1 value
(with beam off); (3) Plot Command
on).
=
0.
B13 = 0).
1349A/D is commanded
1349A/D. Each
1349A/D:
-
Y2 value (with beam
-
L2
0
0
0
0
1
W1
1
1
0
0
L1
0
0
1
1
0
Half Brightness
Full Brightness
Line Type
LO
Solid Line
0
Intensify Endpoints (solid line)
1
Long Dashes
0
1
Short Dashes
1
Dots on endpoints
WO
Writing Speed
0.19 cm per microsecond
1
0
0.34 cm per microsecond
0.52 cm per microsecond
1
0
0.69 cm per microsecond
DATA
MSB LSB
B14=0, B13=0 : Plot Command.
XY
0 = X coordinate (0-2047) as specified by DO - D10.
2) Y1 Graph command with the beam on. This
moves the beam to point
GI. Note that thereis no
DELTA-X increment with the first Y Graph
command.
Y2
3)
Graph command with the beam on. This
moves the beam to point G2.
Y3 Graph command with the beam on. This
4)
moves the beam to point G3.
5)
Y4 Graph command with the beam on. This
moves the beam to point G4.
This will give a picture as shown below.
Figure
GRAPH COMMAND (B14=0, B13=1).
3-6.
Vector Drawing Area
With the two MSBs set to zero and onerespectively, the
1349A/D is commanded to either: (a) set the DELTA-X
increment; or (b) move the beam to a specific X-Y
location determined by the X increment and the Y
coordinate.
The beam position may be moved with the beam either
turned off or turned on. Beam status for the beam
movement is established each time a
Y
coordinate
graph command is received.
The Graph command will draw all vectors according to
the display configuration established by the last Set
Condition command received by the
DATA
MSB
B14=0, B13=1
:
Graph Command
1349A/D.
LSB
XY
0 = set automatic DELTA-X increment (as specified
by DO-DIO) for all subsequent Y coordinate Graph
commands received.
1
=
Y
coordinate (as specified by DO - D10) to which
the beam is to be moved in conjunction with the
DELTA-X increment.
*
IX,Yl
=P1
Figure
TEXT
COMMAND (814 = 1, 813
3-7.
Graphing Example
=
0):
With the two MSBs set to one and zero respectively, the
1349A/D is commanded to draw all the vectors
necessary to produce the character specified.
The
1349A/D automatically provides space to the right
of each character for character spacing.
The Text command will draw the characters at the
intensity level established by the last Set Condition
Command, at the slowest writing speed and in the last
line type specified (except dots).
PC (Pen Control Bit
0 = Move (draw the vector with beam off).
1
=
Draw (draw the vector with beam on).
Example:
To graph, first move the beam to a starting position
P1 (Plot Commands: X value; Y value with beam of).
Then send the
1) DELTA-X Graph command.
Bll).
1349A/D:
Instead of specifying a character to be drawn, the Text
command character code can be replaced by a beam
movement control code. These codes that move the beam
(with the beam off) are Carriage Return (CR), Line Feed
(LF), Inverse Line Feed, Backspace (BS),
and
1/2 shift down. The amount and direction of beam
1/2 shift up,
movement depends on the character size and
orientation specified. Line Feed and Inverse Line Feed
provide automatic spacing between lines of text
centered o
up arrow
left arrow
down arrow
right arrow
square root
pi
delta
mu
O (degree)
ohm
rho
gamma
theta
lamda
3-1. 1349A/D
32 Space
33
34
35 #
36
37
38
39
40
42
43
44
45
49
55 7
58
60
61
!
"
$
'%
&
'
(
41
*
+
,
-
46 .
47
48 0
50 2
51 3
52 4
53 5
54 6
56 8
57 9
:
59
;
<
=
62
>
63
?
/
1
Character Set
@
A
B
C
D
E
F
G
H
I
J
K
L
M
N
0
P
Q
R
S
T
u
v
W
X
Y
z
[
\
I
A
-
NOTE 1
'
NOTE 2
a
b
C
d
e
f
g
h
i
j
k
1
m
n
0
P
q
r
s
t
U
v
W
X
Y
z
E
box
shaded triangle
NOTES:
1. 95= Underline character with Auto Back Space
2. 96= Slanted in opposite direction of character
39.
The characters listed below cause wraparound if positioned too close to the edge of the Vector Drawing area.
Wraparound appears as vectors drawn completely across the display. This condition can also be caused by vectors
drawn
To draw a square on the display, use the following
procedure.
a.
Send the
1349A/D a Set Condition command to
configure display brightness, line type, and
writing rate.
b. Send the
c. Send the
1349A/D a Plot X1 command. Display
1349A/D a Plot Y1 command with the
beam off. This moves the beam to the starting
point of the square.
Send the
d.
beam on. This moves the beam to the
shown in the diagram below (draws vector
Send the 1349A/D a PlotX2 command, then aplot
e.
1349A/D a Plot Y2 command with the
Xl,Y2 point
"1").
Y2 (beam on) command. This moves the beam to
X2,Y2 (draws vector "2").
f.
Send
the
beam
1349A/D a 'lot
On.
This
the
command
beam
to
X2'Y1
with
(draws
the
vector "3").
I
I
I
I
I
l'Y1
I
J
Figure
3-10.
In the case of the
processor go to the Vector Memory as either a write
operation or a read operation.
3-1 1 WRITE OPERATION-
The Write Operation allows the 16 bits on thedata bus to
be written into either the Vector Memory or the Address
Pointer. A Vector Memory word can be either a Picture
Data Word or an Internal Jump Word.
PICTURE DATA WORD. When bit M15 is set low, the
other 15 data bits (M14-MO) must
1349A/D commands covered earlier in this section
under Data Bit Definitions for
3-10.
Drawing two horizontal lines on the
THE
1349D.
1349D, all commands from the user
conform
1349A/D commands.
I
I
X2,Yl
I
I
to the
g.
Send the
1349A/D a Plot X1 command, then a Plot
Y1 (beam on) command. This moves the beam
back to the starting point (draws vector "4").
Figure
3-9.
Drawing a Square on the Display
Example 2.
To draw two horizontal lines on the display, modify
"f'
steps "d" and
in example 1 so that the 1349A/D
receives the Plot Y command with beam off instead of
beam on.
MI5 M14 MI3 MI2 Mll Mi0 M9 M8 M7 M6 M5 M4 M3 M2 MI MO
0 B14 B13 B12 B11 BIO B9
(See
1349A/D
Commands)
I38
B7
B6
I35
B4
B3
B2 B1 BO
When the display is refreshed, this data is sent from the
Memory Board to the VPC for
vectodcharacter
generation. If internal sync mode is selected, display
refresh is accomplished without attention from the user
processor once the picture has been loaded into Vector
Memory. The write operation is controlled by the
handshake sequence as presented in figure 3-2.
INTERNAL JUMPWORD. When M15 is high and M14
is low, then data bits M12 through MO designate the
address of the next word in Vector Memory that will be
sent to the VPC. This allows the Memory to skip blocks
of picture data on each pass through its address range
when it is refreshing the display. Certain data in
Memory is effectively suppressed until the user
processor wants that data to be displayed. Refer to
paragraph 3-14 for an example of using the Jump
Instruction. When needed, a suppressed block of data
can be added to the picture by changing only the Vector
Memory Word that contains the internal jump code. An
internal jump does not affect the User Pointer Address.
are both high, then data bits M12 through MO designate
the address to which the User Address Pointer will
move. The value in the pointer register specifies the next
address in Vector Memory that will be written into (or
read from) by the user processor. The pointer increments
to the next Vector Memory address after each read or
write operation commanded by the user processor.
X=
DON'T
CARE
Set pointer register to the Vector Memory address value
specified by All through AO.
NOTE
The address is placed in the User Address
Pointer, not the Vector Memory.
The Internal Jump instruction resides in the Vector
Memory. When it is encountered in the course of
refreshing the
1349A/D it is not sent to the VPC.
Instead, it causes the Vector Memory to do an absolute
jump to a new location. The Vector Memory then
resumes sending data to the VPC. This allows the user to
store pictures in the Vector Memory but not display
them until ready (by jumping past them). See the
example below.
VECTOR MEMORY
Address Contents
Jump to 1002
Picture A
Jump to 1002
Picture B
Jump to 2062
3-12. READ OPERATION.
The Address Pointer value specifies the word to be read
from Vector Memory. The pointer increments with each
Write or Read operation to the Vector Memory.
Positioning of the Address Pointer to a specific location
can also be accomplished via a write operation and the
pointer instruction. This allows a selected word to be
read from Vector Memory. The read operation is
controlled by the handshake sequence as presented in
figure 3-1.
3-13. PROGRAMMING SUMMARY.
A programming summary for the 1349A/D instruction
set and commands is given in table 3-2.
Table
3-2.
Truth Table for
1349A/D
Instructions and
Commands
BIT NUMBER
MI5 MI4 MI3
0 0 0
0 0
0
0
1
1
1
0 0
1 0
1
1
1
1
1349AlD INSTRUCTION OR
COMMAND
PLOT
1
0
1
GRAPH
TEXT
SET CONDITION
INTERNAL JUMP
1
0
1
INTERNAL JUMP
SET POINTER
SET POINTER
Graticule A
Jump to 2062
Graticule B
Jump to 8191
Set of labels
Jump to 8191
Unused Memory
NO-Op
By putting jump instructions around each block of
data, it allows the user to turn parts of the complete
picture on or off by writing only one or two words to the
Vector Memory. Picture A might be used as a standard
to compare against picture B which is being updated in
real time. For this application, picture A can be turned
on whenever it is needed by changing the contents of
address 0000 to be "Jump to
cycle. The Vector Memory then
ments to location 0001, 0002, etc.
1349A/D in each refresh
auto-incre-
3-15. OPTIMIZING PlCTLlRE QUALITY
Due to differing conditions of ambient light when the
1349A/D is displaying pictures, the programmer may
have to experiment with the Intensity and Writing
Speed parameters of the Set Condition command.
For example, in an environment of high ambient light,
the
1349A/D should be set to the highest brightness
level and slowest writing speed.
3-16. OCTAL AND HEXADECIMAL RANGES
1349AlD COMMANDS.
FOR
1349AlD
Command
Plot
X
(beam off)
Y
Y
(beam on)
Graph
Set DELTA-X
Y
(beam off)
Y
(beam on)
Octal Range
00000 - 07777
10000 - 13777
14000
-
17777
-
20000
30000
34000
27777
-
33777
-
37777
Hexadecimal
Range
0000 - OFFF
1000 - 17FF
1800
-
lFFF
2000 - 2FFF
3000 - 37FF
3800
-
3FFF
3-17. OPERATING CONSIDERATIONS FOR
THE
1349A.
Model 1349A is not equipped with the Vector Memory
Board.
3-18. SIGNAL LINE DEFINI'TIONS.
DO-D15.
DO through Dl5 are the vector data lines ('M'L positive
logic). Bit
LDAV
Data Valid Signal Line (active low
processor to
data bus.
LRFD
Ready for data signal line (active low). Signal to user
processor.
DISCONNECT SENSE.
This line must be grounded when above signal lines
are active. The internal performance verification
pattern will be displayed if this line in not grounded.
4-2. The Performance Verification Procedures in this
section test the instrument's electrical performance.
The procedures provide approximately 90% assurance
of proper
4-3.
4-4. Equipment required for the performance tests is
listed in Section
satisfies the critical specifications given in the table
may be substituted for the recommended models.
4-5.
4-6.
required for this instrument. Performance tests should
be performed after service work has been performed or
if improper operation is suspected.
INTRODUCTION.
1349A/D operation.
EQUIPMENT REQUIRED.
I,
table 1-4. Any equipment that
CALIBRATION CYCLE.
Periodic performance verification is not normally
PERFORMANCE TESTS
4-9.
PERFORMANCE VERIFICATION.
4-7. Further checks that require access to the interior
of the instrument are included in the adjustment
section, but are not required for the performance
verification.
WARNING
u
ELECTRICAL SHOCK HAZARD
This instrument is designed and manufactured for OEM systems. Protective covers
are not provided and internal hazardous
voltages are exposed when power is applied.
Component replacement, including fuses,
and internal adjustments must be made by
qualified maintenance personnel.
4-8.
PERFORMANCE TEST PROCEDURES.
DESCRIPTION:
The following procedure is directed at obtaining the correct performance verification pattern on the 1349A/D
screen.
EQUIPMENT REQUIRED:
Power Supply
Power Connector
PROCEDURE:
a. Adjust power supply outputs to values shown in table 4-1.
Table
4-1.
Power Supply Output
Operating Voltages
Max P-P Ripple
Voltage
+15 VDC
-15 VDC
+5 VDC
b. Connect power supply to the 1349A/D and turn on power. (See figure 4-1 for power connections.)
required to return the
capabilities when repairs have been made. Included in
this section are equipment setups and adjustment
procedures.
5-3. SAFETY REQUIREMENTS.
Although this instrument has been designed in
5-4.
accordance with international safety standards,
general safety precautions must be observed during all
phases of operation, service and repair of the
instrument. Failure to comply with the precautions
listed in the Safety Summary at the front of this manual
or with specific warnings given throughout this manual
could result in serious injury or death. Service and
adjustments should be performed only by qualified
service personnel.
1349A/D
to peak operating
V
5-9. ADJUSTMENT PROCEDURES.
SHOCK HAZARD
This instrument is designed and manufactured for OEM systems. Protectivecovers
are not provided and internal hazardous
voltages are exposed when power is applied.
Voltages up to
CRT and HVPS areas and are capable of
causing serious injury or death. Before any
connections are made to the instrument, the
chassis must be connected to a safety
ground. Component replacement, including
fuses, and internal adjustments must be
made by qualified maintenance personnel.
Table
5-1.
20
kV are present around the
Sequence
of
Adjustments
5-5 EQUIPMENT REQUIRED.
5-6.
A complete list of required test equipment is given
in Section
recommended may be substituted, provided it meets the
required characteristics. For best results, use recently
calibrated test equipment.
1,
table
1-4.
Test equipment equivalent to that
5-7. ADJUSTMENTS.
5-8.
The adjustment procedures are arranged in a
recommended sequence of adjustments. While most
adjustments may be made independent of other
adjustments, it is recommended that adjustments be
made sequentially as a number of adjustments are
directly related to preceeding or following adjustments.
5-1
15
for
For best results, allow the instrument to warm up for
minutes before making adjustments. See table
sequence of adjustments.
Adjustment
Low Voltage Power Supply
High Voltage Power Supply
Z-Axis Drive and Test
Pattern Set-up
Preliminary Focus and
Astigmatism
Intensity Cut-Off Level
Trace Alignment and
Writing Speed
Stroke Generator
Stroke Intensity
Image Size and Position
Vector Closure
Fine Focus and Astigmatism
The purpose of these adjustments are to set Z-Axis drive and to initially set image size and positioning.
EQUIPMENT REQUIRED:
Power Supply
Oscilloscope
PROCEDURE:
a. Apply power to the instrument. Most of the 1349A/D primary test pattern should be on screen.
b. Monitor
A4TP2 with the oscilloscope. Set the oscilloscope sweep speed for 0.5 mSec/Div and 1 V/Div, using a 10:l
divider probe. DC couple the vertical attenuator.
c.
Adjust Intensity Cut-off level
(AlR131) so that the bottom level of the waveformis set to +20 VDC with respectto
ground, or until rest dot is extinguished (dot above and to the right of Y=2047).
d. Adjust Intensity control (AlR129) so that the peak-to-peak value of the waveform is equal to the value marked on
top of the CRT plus
e.
Adjust Med Intensity control
1V. Use the sticker with the largest voltage value.
EXAMPLE: If CRT label reads
35V/140, then set p-p value to 36V.
(AlR181) so that the peak-to-peak value of the first narrow level towards the end of
the waveform is equal to the value marked on top of the CRT plus 1V. Use the sticker with the medium voltage
value.
f. Adjust Dim Intensity control
of the waveform is equal to the value marked on top of the CRT plus
(AlR180) so that the peak-to-peak value of the second narrow level towards the end
1V. Use the sticker with the smallest voltage
value.
Reference
Designator
AIR131
AIR128
AIR181
AIR180
AlRllO
AIR87
AIR105
AIR82
AIR56
AIR65
Adjustment
Name
Intensity
Cut-Off
Intensity
Medium
Intensity
Dim
Intensity
Y-Gain
X-Gain
Y-Pos
X-Pos
X-Current
Off-set
Y-Current
Off-set
A1 R129
INTENSITY
Table
ADJUSTMENTS
5-4.
2-Axis Drive Adjustment and Test Pattern Set-up
Adjustment
Paragraph
5-12, c
5-12, d
5-12, e
5-12, f
5-12, g
5-12, g
5-12, g
5-12, g
5-12, h
5-12, h
AIR131
INTENSITY X-CURRENT OFFSET
CUT-OFF
Service
Sheet
Adjust so that monitored signal
3C
3C
is
Adjust p-p value as marked on the
CRT +lV (largest sticker value)
3B
Adjust p-p level of first narrow
level as marked on CRT +lV
(medium sticker value)
3B
Adjust p-p value of second narrow
level as marked on CRT +lV
(smallest sticker value)
3C
3C
3C
3C
3B
3B
A1 R65
Y-CURRENT OFFSET
I
Adjust for a 12 cm high display
Adjust for a 17 cm wide display
Adjust as required
Adjust as required
Mechanical center
Mechanical center
Description
+20 VDC above ground
A1 R56
Adjust Y-Gain (AlR110) for a 12 cm (4.72in.) high andX-Gain (AlR87) for a 17 cm (6.7in.) wide display. It may be
g.
necessary to to adjust Y-Pos
(AlR105) and X-Pos (AlR82) to bring the display on screen. The primary test pattern
is shown in figure 5-4.
h. Mechanically center X-Current Off-set
Figure
(AlR56) and Y-Current Off-set (AlR65).
5-4.
1349A/D
Primary Test Pattern
P/O Figure
5-5.
2-Axis Driue and Preliminary Focus Adjustment Locations
These procedures provide the necessary adjustments for preliminary focus and astigmatism set-up. The only signal
source required is the primary test pattern.
EQUIPMENT REQUIRED:
Power Supply
Oscilloscope
PROCEDURE:
a.
Preset X-Focus Gain
(A4R2) fully cw.
Board
b.
Apply power to the instrument. The primary test pattern should be displayed on screen
5.
(AlR142) fully cw, Y-Focus Gain (AlR145) fully ccw, and Focus Gain on the High Voltage
Table
Reference
Designator
AlR142
AIR145
A4R2
AIR138
AIR135
AIR149
AlR171,AlR169
ADJUSTMENTS
5-5.
Preliminary Focus and Astigmatism Adjustment
Adjustment
Name
X-Focus
Gain
Y-Focus
Gain
Focus Gain
Y-Focus
Off-set
X-Focus
Off-set
Fine Focus
Edge Astig
Center Astig
Adjustment
Paragraph
5-13, a
5-13, a
5-13, a
5-13, d
5-13, e
5-13, g
5-13, h
Service
Sheet
3C
3 C
5
3 C
3C
3C
3 C
Description
Preset to fully cw
Preset to fully ccw
Preset to fully cw
Bottom of signal to
AlTPlO DC level
Bottom of signal to
AlTPlO DC level
5 VDC above signal
clipping level
Center both
adjustments
Figure
c. Set monitor oscilloscope sweep speed to 2
probe and DC couple the attenuator. Monitor
5-6.
1349A/D Primary Test Pattern
mSec/Div, and vertical attenuator to 0.2 V/Div. Use a 10:l divider
AlTPlO and position the trace on the center graticule line with the
vertical position control.
d.
Monitor
AlTP9 and adjust Y-Focus Off-set (AlR138) so that the bottom of the signal is on the center graticule
line.
e. Move the scope probe to
AlTPll and adjust X-Focus Off-set (AlR135) so that the bottom ofthe signalis on center
graticule line. Readjust scope trigger level if necessary.
f. Set monitor scope sweep speed to 0.2 mSec/Div and the vertical attenuator to 0.5 V/Div. DC couple the vertical
attenuator arid monitor
A4TP1 (on High Voltage Board) with a 10:l divider probe.
V-FOCIIS
FINE
A1
A4R42
A4R54
AIR169
OFFSET
V-FOCIJS
Focus
45' Astig
Center Astig
GAIN
X-FnCllS
GAIN
5-13, i
3C, 5
For best overall
display
X-FOCUS OFFSET EDGE ASTlG CENTER ASTlG
AIR149 fully cw. Adjust AIR149 slowly in the ccw direction and note the signal level where clipping ends.
Set
g.
Adjust
AIR149 so that the bottom of the waveform is 5 VDC above the clipping level.
h. Center adjustments Edge Astig
i. Adjust Focus (A4R42), 45' Astig (A4R54), and Center Astig (AlR169) for best display.
(AlR171) and Center Astig (AlR169).
Note: Adjustment Locations for
Figure
5-7.
5-6
A4R2, A4R42, and A4R54 are shown on figure
5-3.
2-Axis Drive and Preliminary Focus Adjustment Locations
The primary test pattern is used as the signal source to adjust the intensity cut-off level.
EQUIPMENT REQUIRED:
Power Supply
Oscilloscope
PROCEDURE:
a. Apply power to the instrument and display the primary test pattern.
b. Set monitor scope sweep speed to 2
attenuator and use a
c. Set Intensity Cut-off
primary test pattern.
d. Readjust Intensity Cut-off
5
mSec/Div and set the vertical attenuator to 0.5 V/Div. DC couple the
10:l divider probe to monitor A4TP2 on High Voltage board.
(AlR131) cw until a dot just appears above and to the right of the note "Y=2047" in the
(AlR131) until dot is just extinguished. Note the signal level on the monitor scope.
ADJUSTMENTS
5-15.
TRACE ALIGNMENT AND WRITING
REFERENCE:
Service Sheets 3B,
DESCRIPTION:
The 1349A/D primary test pattern is used for trace alignment and writing speed adjustment. The seven segment line
of the test pattern is used to adjust writing
EQUIPMENT REQUIRED:
Power Supply.
PROCEDURE:
a. Apply power to the instrument and display the primary test pattern.
b.
Adjust Trace Align
c. Adjust Writing Speed
5
(AlR160) to align test pattern horizontally.
(AlR70) for the seven segment line as shown in figure 5-8.
SPEED ADJUSTMENT.
speed.
e. Adjust Intensity Cut-off level so that the signal level displayed on the
horizontal lines of
four small boxes in
the test pattern
(figure 5-12)
3B
Equal intensity of
vertical lines of
four small boxes in
the test pattern
(figure 5-12)
A1 R36
Y-STROKE OFFSET
Description
Y-DAG GAIN
ADJUSTMENTS
IMAGE SIZE AND POSITION ADJUSTMENTS.
5-18.
REFERENCE:
Service Sheet 3C
DESCRIPTION:
I
Using the 1349A/D secondary test pattern, the X Gain is set to 17 cm (6.69 in.) and the Y Gain is set to 12 cm (4.72 in.).
The test pattern is also centered vertically and horizontally.
EQUIPMENT REQUIRED:
Power Supply
PROCEDURE:
A2J6-1
Short
a.
Adjust Y-Pos
b.
c. Adjust Y-Gain
to
A2J6-2 and apply power to the instrument. The secondary test pattern should be displayed.
(AlR105) until the test pattern is vertically centered.
(AlR110) so that the outside box of the pattern is exactly 12 cm (4.72 in.) high. A plastic see-
through ruler cut to length and held against the CRT may be used for this measurement.
Adjust X-Pos
d.
e.
Adjust X-Gain (AlR87) so that the outside box of the test pattern is exactly 17 cm (6.69 in.) wide. Use the same
(AlR82) to center the pattern horizontally.
method of measurement as in step c.
Recenter the test pattern as necessary using X-Pos (AlR82) and Y-Pos (AlR105).
f.
NOTE: Adjustment Locations for Image Size and Positioning are shown in figure 5-5.
Table
5-10.
Image Size and Position Adjustments
Reference
Designator
AIR105
Adjustment
Name
Y-Pos
Adjustment
Paragraph
518, b
Service
Sheet
3C
Center test pattern
vertically
AlRllO
Y-Gain
5-18, c
3C
Adjust for a 12 cm
(4.72 in.) high
display
AIR82
X-POS
518, d
3C
Center test pattern
horizontally
AIR87
X-Gain
5-18, e
3C
Adjust for a 17 cm
(6.69 in.) wide display
Description
-CURRENT X-STROKE
OFFSET LENGTH
A1 R56 A1 R20
Figure
5-13.
X-STROKE
OFFSET
A1 R8
X-RAMP X-DAC
OFFSET
A1 R11 AlRl
GAIN
Stroke Generator, Stroke Length and Stroke Intensity Adjustment Locations
horizontal lines of
four small boxes in
the test pattern
(figure 5-12)
Equal intensity of
vertical lines of
four small boxes in
the test pattern
(figure 5-12)
A1 R36
Description
Y-DAG GAIN
i
ADJUSTMENTS
IMAGE SIZE AND POSITION ADJUSTMENTS.
5-18.
REFERENCE:
Service Sheet 3C
DESCRIPTION:
Using the 1349A/D secondary test pattern, the X Gain is set to 17 cm (6.69 in.) and the Y Gain is set to 12 cm (4.72 in.).
The test pattern is also centered vertically and horizontally.
EQUIPMENT REQUIRED:
Power Supply
PROCEDURE:
a. Short A2J6-1 to A2J6-2 and apply power to the instrument. The secondary test pattern should be displayed.
Adjust Y-Pos (AlR105) until the test pattern is vertically centered.
b.
c. Adjust Y-Gain
through ruler cut to length and held against the CRT may be used for this measurement.
Adjust X-Pos
d.
e. Adjust X-Gain
method of measurement as in step c.
(AlR110) so that the outside box of the pattern is exactly 12 cm (4.72 in.) high. A plastic see-
(AlR82) to center the pattern horizontally.
(AlR87) so that the outside box of the test pattern is exactly 17 cm (6.69 in.) wide. Use the same
f.
Recenter the test pattern as necessary using X-Pos (AlR82) and Y-Pos (AlR105).
NOTE: Adjustment Locations for Image Size and Positioning are shown in figure
Table
5-10.
Image Size and Position Adjustments
Reference
Designator
AIR105
AlRllO
AIR82
AIR87
Adjustment
Name
Y-Pos
Y-Gain
X-Pos
X-Gain
Adjustment
Paragraph
518,
b
5-18, c
5-18, d
5-18, e
Service
Sheet
3C
3C
3C
3C
Center test pattern
vertically
Adjust for a 12 cm
(4.72 in.) high
display
Center test pattern
horizontally
Adjust for a 17 cm
(6.69
in.) wide display
5-5.
Description
-CURRENT X-STROKE
OFFSET LENGTH
A1 R56 A1 R20
Figure
5-13.
X-STROKE
OFFSET
A1 R8
Stroke Generator, Stroke Length and Stroke Intensity Adjustment Locations
The procedures outlined below describe the adjustments necessary for best overall vector closure between the low
speed vectors and high speed vectors. The secondary test pattern is used for this procedure.
EQUIPMENT REQUIRED:
Power Supply
PROCEDURE:
a.
Short
A2J6-1 to A2J6-2 and apply power to the instrument to obtain the secondary test pattern.
b. Adjust Y-Ramp Offset
vector and high speed vectors. Try to keep the low speed box corners closed while adjusting the high speed as
close as possible. Refer to figure 5-14.
Adjust X-Ramp Offset
c.
vectors and the high speed vectors. Try to keep the low speed corners closed while bringing the high speed as close
as possible. Refer to figure 5-14.
(AlR39) and Y-Stroke Length (AlR48) for best overall vector closure between low speed
(AlR11) and X-Stroke Length (AlR20) for best overall closure between the low speed
FINE FOCUS AND ASTIGMATISM ADJUSTMENT AND RESOLUTION CHECK.
REFERENCE:
Service Sheet 3C, 5
DESCRIPTION:
These procedures provide the necessary adjustments for optimum focus of the display. The secondary test pattern is
used as the signal source. A resolution check at the end of this procedure is also included.
EQUIPMENT REQUIRED:
Power Supply
PROCEDURE:
NOTE
The fine focus and astigmatism adjustment is based on the correct set-up of all
previous adjustment procedures.
The following procedures reference figure 5-15. Perform the following adjustments in
the same sequence as outlined below:
a. Short
b.
A2J6-1 to A2J6-2 and apply power to the instrument to obtain the secondary test pattern.
Adjust Focus
(A4R42)onHigh Voltage board and Center Astig (AlR169) on AnalogX-Y-Z board to convert dots on
secondary test pattern to short vertical lines.
ADJUSTMENTS
NOTE
Refer to figure 5-16 for the following procedures.
Adjust X-Focus Gain
f.
g. Adjust Y-Focus Gain
h. Adjust Focus
(A4R42 on High Voltage Board) for best picture. Concentrate on the four vertical medium
intensity segments of the pattern while keeping best overall focus on the rest of the display.
(AlR142) for best display at the X-Axis edges.
(AlR145) for best display at the Y-Axis edges.
ADJUST Y-FOCUS GAlN (A1 R145)
MEDIUM INTENSITY
LINES
c. Adjust 45" Astig
(A4R54) on High Voltage board so that all converted dots are close to vertical. When optimally
set the converted dots may lean to left and right of vertical in different parts of CRT. In this case set to least
overall departure from vertical.
d. Adjust Center Astig
(AlR169) so that dots around the three centermost patters stay round when Focus (A4R42) is
adjusted slightly either side of smallest dots. This may require some compromise between Center Astig and
Focus adjustments.
e. Adjust Edge Astig
EDGE ASTlG
(AlR171)
(AlR171) for best display at the centermost edge patterns.
1349A/D passes the resolutuion test if all of the lines in the 13 boxes of the test pattern can beresolved. If
the resolution tests fails, it may be necessary to adjust Focus and Astig adjustments slightly to improve
overall definition of the secondary test pattern.
Table
5-12.
Fine Focus and Astigmatism Adjustment
I
Reference
Designator
A4R54
I
Adjustment
Name
45 degree
Astig
Center Astig
Edge Astig
I
Adjustment
Paragraph
5-20, b,
I
I
Service
Sheet
c
5
I
Description
Adjust for most
vertical converted
I
dots
Adjust for round
dots on both sides
of Focus of three
centermost patterns
Adjust for best
display of
center-
most edge patterns
I
A4R54
45" ASTlG
X-STROKE LENGTH X-RAMP OFFSET
A1 R20
Note: High Voltage cover is removed.
AlRll
A4R42
X-Focus
Gain
Y-Focus
Gain
Focus
520,
Adjust for best
display at X-Axis
Adjust for best
display at Y-Axis
h
5
Adjust for best
overall display
FOCUS GAlN
A4R2
Figure 5-1
FOCUS
A4R42
7.
Vector Closure, Focus and Astig Adjustment Locations
6-2. This section contains information for ordering
parts. Table 6-1 lists abbreviations used in the parts
list, table 6-2 lists all replaceable parts in reference
designator order.
6-3. ABBREVIATIONS.
6-4. Table 6-1 lists abbreviations used in the parts list,
the schematics, and throughout the manual. In some
cases, two forms of the abbreviations are used, one all
in capital letters, and one partial or no capitals. This
occurs because the abbreviations in the parts list are
always all capitals. However, in other parts of the
manual other abbreviation forms are used with both
lower and uppercase letters.
The total quantity for each part is only given once, at
the first appearance of the part number in the list.
6-7. ORDERING INFORMATION.
6-8. To order a part listed in the replaceable parts
table, quote the Hewlett-Packard
digit, indicate the quantity required, and address
the order to the nearest Hewlett-Packard office.
6-9.
To order a part that is not listed in the
replaceable parts table, include the instrument model
number, instrument serial number, the description
and function of the part, and number of parts
required. Address the order to the nearest
Packard office.
rart number, check
Hewlett-
6-5. REPLACEABLE PARTS LIST.
6-6. Table 6-2 is the list of replaceable parts and is
organized as follows: 6-11. Within the
Electrical assemblies in alphanumerical order
a.
by reference designation.
b. Chassis-mounted parts in alphanumerical order a. Direct ordering and shipment from HP Parts
by reference designation.
6-10. DIRECT MAIL ORDER SYSTEM.
USA,
Hewlett-Packard can supply
parts through a direct mail order system. Advantages
of
using the system
Center in Mountain View, California.
are
as
follows:
c. Electrical assemblies and their components in b. No maximum or minimum on any mail
alphanumerical order by reference designation.
The information given for each part consists of the
following:
a. Complete reference designation.
b. Hewlett-Packard part number.
c.
Total quantity (Qty) in instrument.
d. Description of part.
e. Check digit.
order (there is a minimum order amount for parts
ordered through local HP offices when orders require
billing and invoicing).
c.
Prepaid transportation (there is a small handl-
ing charge for each order).
-
d. No invoices
check or money order must accompany each order.
6-12. Mail order forms and specific ordering in-
formation are available through your local HP offices.
RESISTOR 1 62K 1% 125W F TC=OI.100
RESISTOR 130 1% 25W F TC=0?100
RESISTOR TRMR 5K 10% C TOP~ADJ 1 -TRN
RESISTOR 147 1% 125W F TC=0?100
RESISTOR 825 1% 125W F TC=0+100
RESISTOR 511 1% 125W F TC=0?100
RESISTOR 511 1% 125W F TC=0?100
RESISTOR 10K 1% 125W F TC=O+lOO
I
1
RESISTOR 10K 1% 125W F TC=0?100
RESISTOR 51 1 1 % 125W F TC-OI.lOO
RESISTOR 51 1 1% 125W F TC=0?100
RESISTOR-TRMR 10K 10% C TOP ADJ 1-TRN
RESISTOR 17 8K 1% 125W F TC=O+lOO
I
I
RESISTOR TRMR 5K 10% C TOP-ADJ 1 -TRN
RESISTOR 681 1% 125W F TC=Ot100
RESISTOR 6 l9K 1% 125W F TC=Ot100
RESISTOR 10K 1 % 125W F TC=Oi100
RESISTOR 46 4K 1% 125W F TC=OI.100
RESISTOR 3 92K 1% 125W F TC-Of 100
10K 1% 125W F TC=0?100
RESISTOR
RESISTOR 3 32K 1% 125W F TC=0+100
RESISTOR 2 74K 1% 125W F TC=0?100
RESISTOR-TRMR 500 10% C TOP-ADJ 1-TRN
RESISTOR~TRMR 1 K 10% C TOP-ADJ 1 TRN
NOT ASSIGNED
TERMINAL TEST POINT PCB
NOT ASSIGNED
NOT ASSIGNED
NOT ASSIGNED
NOT ASSIGNED
NOT ASSIGNED
NOT
ASSIGNED
TERMINAL TEST POINT PCB
TERMINAL TEST POINT PCB
TERMINAL TEST POINT PCB
IC FF TTL LS D~NPE POS~EDGE-TRIG COM
IC FF TTL LS D-NPE POSEDGE-TRIG COM
IC CONV 12-WD/A 24-DIP C PKG
IC CONV 12-B~D/A 24-DIP-C PKG
IC OP AMP LOW BIAS-H-IMPD TO99 PKG
IC OP AMP LOW-BIAS-H-IMPD TO99 PKG
ANALOG
MClLTl PACK
IC OP AMP WE 8-DIP-P PKG
IC OP AMP WB 8-DIP-P PKG
IC OP AMP LOW-BIAS-H-IMPD TO99 PKG
IC OP AMP GP 8-DIP~P PKG
IC OP AMP LOW~BIAS-H-IMPD QUAD 14-DIP-D
IC FF TTL LS D-NPE POS-EDGE-TRIG COM
IC FF TrL LS D-NPE POS-EDGE-TRIG COM
IC CONV 12-B-D/A 24-DIP-C PKG
IC CONV 12-&D/A 24~DIP-C PKG
IC OP AMP LOW~BIAS H-IMPD TO99 PKG
IC OP AMP LOW-BIAS-H-IMPD TO99 PKG
MULTl PACK
ANALOG
IC OP AMP WE 8-DIP-P PKG
IC OP AMP WE 8-DIP-P PKG
IC OP AMP LOW~BlAS~H~lMPD TO99 PKG
IC OP AMP GP 8-DIP-P PKG
IC OP AMP GP 8~DlP~P PKG
IC 20-DIP C PKG
RAMP GENERATOR
IC LINEAR
IC LINEAR
-
-
IC LINEAR
IC V RGLTR TO 220
IC OP AMP LOW-BIAS-H-IMPD QUAD !4-DIP-C
IC OP AMP LOW-BIAS-H-IMPD QUAD 14-DIP-C
IC V RGLTR TO-220
IC-VOLTAGE REGULATOR
TRANSISTOR NPN
TRANSISTOR PNP SI TO 39 PD-lW FT l00MH.Z
TRANSISTOR NPN SI TO 39 PD-lW FT-200MHZ
TRANSISTOR NPN SI PD-350MW FT-300MHZ
TRANSISTOR PNP SI TO 39 PD-lW FT lOOMHZ
TRANSISTOR NPN SI TO 39 PD-lW FT-200MHZ
TRANSISTOR NPN SI PD 90W FT-2MHZ
TRANSISTOR PNP S1 TO 39 PD-lW FT-lO0MH.Z
TRANSISTOR NPN S1 TO 39 PD-lW FT-200MHZ
TRANSISTOR PNP S1 PD 31MW F1-250MHZ
H V X8 HI
120PF '5% 300VDC MlCA
01 UF 180 20% l00VDC CER
1 LlF 180-20% 200VDC CER
01 UF 180 20% l00VDC CER
01 UF 1 80 20% l00VDC CER
lLlF t80 20% 200VDC CER
l00UF 4 20% 20VDC TA
l00UF 120% ZOVDC TA
056UF 1 10% 200VDC POLYE
OlUF i20% 4KVDC
01 UF t80 20% 5OOVDC CER
120% 3KVDC CER
'20% 3KVDC CER
022UF 410% 200VDC POLYE
OPF 1 25PF 500VDC CER
OlUF +80 20% l00VDC CER
1UF 120% 200VDC CER
+
25PF 500VDC CER
I80 20"/0 200VDC CER
180 20% 200VDC CER
750MA DO 29
120V 50MA l00NS
WIT CHI^,;
PWR RtCT 430V 75ilMA
bWITClllh(;
SW
I.'tllh(;
M3XO 5 8 LG
750MA DO 29
115.
!,>MA
3r)\
5lMA IhS
3r)\
53MA r)hS
750MA DO 29
10KV 5MA 250NS
750MA DO 29
750MA DO 29
750MA DO 29
750MA DO 29
750MA DO 29
120V 50MA l00NS
CLIP TYPE 250 FUSE
22UH 10% 23DX 57LG
NlLD 220UH 5% 166DX 385LG
SI PD 350MW FT-300MHZ
I
>OE~S
UO
21
2.7
35
UO
35
M3X0 5 8MM LG
Mfr
Code
Number
1901 0096
1901 0028
1901
~0028
1901 0096
1901 0028
1901 0040
1901
~0040
1901 ~0028
1901 0028
1901
0683
1901 0028
1901 0028
1901 0028
1901
0028
1901 0028
1901 0028
1901
~0096
2110 0001
21 10 0269
ORDER BY DESCRIPTION
0360~1653
0515 0372
0340 0564
ANY SATISFACTORY SUPPLIER
ALLEN-BRADLEY CO
TEXAS
RCA CORP
SPECTROL ELECTRONICS
GE CO SEMICONDUCTOR PROD DEPT
KDI
MOTOROLA SEMICONDUCTOR PRODUCTS
FAIRCHILD SEMICONDUCTOR DIV
TRW INC
MEPCO/ELECTRA CORP
TRANSITRON ELECTRONIC CORP
CORNING GLASS WORKS (BRADFORD)
NATIONAL SEMICONDUCTOR CORP
CORNING GLASS WORKS (WILMINGTON)
HEWLETT-PACKARD CO CORPORATE
MEPCO/ELECTRA CORP
BOURNS INC
HARRIS
MOSTEK CORP
SPRAGUE ELECTRIC CO
ELECTRO MOTIVE CORP
ERIE TECHNOLOGICAL PRODUCTS INC
BECKMAN INSTRUMENTS INC HELIPOT DIV
BUSSMAN MFG DIV OF MCGRAW-EDISON CO
I-ITTLEFUSE INC
TRW CAPACITOR DIV
AUGAT INC
INSTR INC SEMICOND CMPNT DIV
SOLID STATE DIV
PYROFILM CORP
HO
TRIMPOT PROD DIV
SEMICON DIV
SLlB IEC
Address
MILWAUKEE WI
DALLAS T X
SOMERVILLE NJ
CITY OF IND C A
8-2. This section provides instructions for trouble-
shooting and repairing the Model
Display.
8-3. Detailed theory of operation and troubleshooting
information are located opposite the schematics on is shown in Figure 6-1. Refer to Table
foldout Service Sheets. The remainder of this section assemblies indexed to Service Sheets.
has general service information that should help you
quickly service and repair the Display.
1349A/D Digital
8-4. THEORY OF OPERATION.
8-5. Overall theory of operation appears on pages
opposite the Block Diagram (Service Sheet
section of the diagram refers to service sheets where
detailed theory, schematics and troubleshooting infor-
mation are presented. Figure 8-2 explains any unusual
symbols that appear on the schematics.
LOGIC CONVENTIONS.
8-6.
is used in this manual, unless otherwise noted on the
schematics. Positive logic convention defines
more positive voltage (high) and a logic
negative voltage (low).
8-7. LOGIC SYMBOLOGY.
symbology is used in this manual. The purpose of these
symbols is to graphically represent device function so
that the operation can be understood without having to
"look up" how a device works. Basic logic symbols and
examples of symbols are shown in Figure 8-3. Table 8-2
provides an explanation of function lables used in the
schematics.
Positive logic convention
The new ANSI logic
"1"
"0"
as the more
1).
Each
as the
other than that listed may be substituted if it meets the
listed specifications.
8-10. REPAIR.
8-1 1. ASSEMBLY REMOVAL.
Table
8-1.
Service Sheet Quick Reference.
I
I
Assembly
I
I
I
A5 Memory Circuit (l349D only) 6A, 6B
Major assembly removal
Name
8-12. CRT REMOVAL PROCEDURE.
a. Remove power from the instrument.
b. Remove CRT socket. Use two thin bladed
screwdrivers to pry the socket away from the CRT (see
Figure 8-3). Disconnect the PA lead.
Loosen screw on the CRT Shield
c.
of the instrument (next to the Low Voltage Power
Supply).
8-1
for the list of
I
Service
I
Sheells1
3A,
(MP2) on top
I
I
3B, 3C
1
8-8. RECOMMENDED TEST EQUIPMENT.
8-9. Test equipment required for maintaining the
1349A/D is listed in Section I Table 1-4. Equipment
d. Loosen Preload Ring (MP7). Use a No. TI5
Torx screwdriver. Gradually release the pressure of the
1,
Preload Ring by loosening the screws in the
sequence as shown in Figure
TO REMOVE CRT SOCKET
POSITION FLAT BLADED
SCREWDRIVER HERE
PRELOAD RlNG (MP7)
4
e. Remove CRT Bezel (MP4) using a No. T10 Torx
screwdriver. Remove the CRT from the CRT Shield
8-14.
DC VOLTAGES AND WAVEFORMS.
DC volt-
ages, waveforms and conditions for making these
(MP2). measurements are given on, or are adjacent to
schematics on the Service Sheets. Since conditions for
When reinstalling a CRT, relubricate the Yoke
f.
assembly with silicone grease. Ensure a layer of grease
where ever the CRT contacts the Yoke assembly.
Lubricate the PA lead from the CRT. Wipe the
g.
electrical connector part of the
PA
lead clean.
h. To reassemble the instrument reverse the
above procedure (steps e through b).
making measurements may differ from one circuit to
another, always check the specific conditions listed for
each schematic.
8-15.
Before attempting to troubleshoot the
INITIAL TROUBLESHOOTING PROCEDURE.
1349A/D,
visually inspect the interior of the instrument for any
signs of abnormal internally generated heat, such as
8-13.
TROUBLESHOOTING.
discolored printed circuit boards or components,
damaged insulation, or evidence of arcing. Determine
WARNING
0
Read the safety summary at the front of this
manual before troubleshooting the instru-
ment.
and remedy the cause of such conditions. If no
abnormal conditions are found, try to perform the
V
adjustment procedure in Section
of this manual.
Some apparent malfunctions may be corrected by these
adjustments, or failure to obtain a correct adjustment
will often reveal the source of trouble.
contain functional descriptions keyed to the simplified
block diagram on the opposite page. The block diagram
is drawn for function and does not show circuit details.
Circuit details and circuit descriptions are located on
the schematics following the block diagram. Refer to
Table 8-1 for schematic identification.
INTRODUCTION.
The following paragraphs
8-18. VECTOR PROCESSOR (Assembly A2,
Service Sheets 2, 2A).
The purpose of the Vector Processor Control is to
convert the digital 16 bit input data from the user
processor to absolute coordinate vector data for the
Stroke Generator (Al). The self test processor
used to display the primary and secondary test
patterns. The patterns are used for the Performance
Checks (Section IV) and the Adjustment Procedures
(Section V). The Vector Processor Control Board
contains the following primary circuits:
Input Data Latches
1.
2. Output Data Latches (A2U22-A2U25).
Character Generator (A2U5, A2U9 - A2U12).
3.
4. Timing Circuits (A2U14, A2U26).
(A2U6, A2tJ8, A2U13).
A2Ul is
3. Ramp Generator (AlU26).
4.
Intensity Controller (AlU25).
X
and Y Output Amplifiers.
5.
8-20.
LOW VOLTAGE AND
HIGH VOLTAGE
POWER SUPPLIES (Assemblies A3, A4 Service
Sheets 4, 5).
The Low Voltage Power Supply (A3) conditions the
operating potentials for the
assembly provides a
Voltage Power Supply, the
Intensity Amplifier and Astigmatism Amplifiers. The
High Voltage Power Supply
potentials for the CRT. The supply consists of the
following circuits:
1. Oscillator Circuit
2.
Cathode Rectifier and Filter (A4CRl1, A4C12,
A4C13).
3. High Voltage Regulator (A4Ul).
4. Level Translator Circuit (A4CR14, A4CR15,
A4C16).
1349A/D. Additionally, the
f105V supply for the High
X-Y
Deflection Amplifiers,
(A4) provides the operating
(A4Q7).
8-21. MEMORY ClRCLllT (Assembly AS,
Service Sheet 6).
The Stroke Generator converts binary data from the
Vector Processor to analog deflection information. The
Stroke Generator consists of the following primary
circuits:
1.
Digital to Analog Converters (AlU1-AlU6,
AlU13-AlU18).
2. Analog Multiplier (AlU7, AlU19).
The Vector Memory circuit can store all the 1349A/D
commands to draw a picture on the screen. The user
processor can access any address in Vector Memory via
the Address Pointer. This allows selected portions of a
picture to be changed or sent back to the processor for
checking or processing.
The Memory Circuit also has a feature whereby the
user processor can supress portions of the picture (such
as graticules or labels). Suppressed information is not
erased from the Vector Memory. This is done by having
the Memory do an Internal Jump past the data that is
not to be displayed. Suppressed data can be made part
of the picture by using only a few user processor
commands, thus reducing overhead time.
The 16 bit data from a user processor is converted to
absolute coordinate vector data for the X-Y Stroke
Generator
host processor or refresh system with the circuit board.
The self test processor is used for storing the primary
and secondary test patterns. The Vector Processor
consists of the following circuits which are described
below:
INPUT DATA BUFFERS. The Input Data Buffers
provide buffering for the Vector Processor
The input data is gated to the when the VPC is ready
for new vector data. Character data is handled by
A2U13, while vector data is handled by A2U6 and
A2U8. The VPC controls the gating of the data by
using the signal lines VECTOR and CHARACTER.
OUTPUT DATA AND CONDITION LATCHES. The
absolute
(A2U16), are held in output latches A2U22-A2U25 for
use by the Stroke Generator. The vector data is
transfered by the Data Latch signal into the Output
Latches. Condition Latches
the last Set Condition commands.
CHARACTER GENERATOR. The Character Generator
translates character data into vector data for the VPC
(A2U16). ROM A2U12 contains the stroke information
for the modified ASCII character set. The character
size and rotation is processed by the VPC for proper
vector generation.
To generate a character:
1.
2. LDAV is set low by the user processor (or by
3. VPC sets LVECTOR low to read Data Bus
4.
5. VPC set
6. VPC sets LCHARACTER low to read byte from
7.
(Al). This is accomplished by interfacing a
1.
Input Data Latches (A2U6, A2U8).
2. Output Data Latches (A2U22-A2U25).
3. Character Generator (A2U5, A2U9-A2U13).
4. Timing Circuit (A2U14, A2U26).
5. Vector Processor (A2U16).
6.
Condition Latches (A2U18-20).
(A2U16).
X
and Y vector values generated by the VPC
(A2U18-A2U20) contain
LRFD is set low by the VPC.
A2U1 if in self test).
Command from Data Buffers
At the same time LVECTOR goes low,
are loaded with the address of the character from
Character look-up ROM
LRFD
Character ROM
AlU13.
VPC sets LCHARACTER high to clock A2U9A2Ull via A2U15B (COUNT INC goes positive)
for next character byte.
high.
A2U12 via Character Buffer
A2U6 and A2U8.
A2U9-Ull
A2U5.
7
Steps 6 and
8.
character has been transferred to the Analog
Board.
VPC sets LRFD low for next Data Bus command.
9.
TIMING CIRCUIT. The clock circuit (A2U14,A2U26)
provides the clock for the VPC. A2U14 generates a
19.66 MHz pulse and
3.93 MHz for the VPC.
VECTOR PROCESSOR (VPC). The VPC is the control-
ling device for vector generation, using four program-
mable modes of operation.
1. Set Condition
2. Plot Absolute
3. Graph Absolute
4.
Text
SET CONDITION. When bits B14, and B13 of an input
word are set to
Condition Command. The Set Condition Command
controls the intensity level, the line type, and the
writing speed of the vector drawn. Once a Set Condition
has been defined, the data remains stored in buffers
A2U18-A2U20 until a new Set Condition Command is
received.
PLOT COMMAND. When bits B14 and B13 are set to
"O",
the VPC is ready to process vector data. Data bits
BO-B10 define X or Y coordinates. When bit B12 is set to
"0" the incomming data is an X coordinate, when bit
B12 is set to
The beam can be turned on or off depending on the
status of bit
latched into
GRAPH COMMAND. The Graph Command allows
automatic X incrementing with each new
input. To invoke the Graph Command, data bits B14
must be set to
B12 is set to
VPC is now programmed to increment the X coordinate
each time a new Y coordinate is received. Bits
contain Y coordinate information when B12 is set to
"1
".
TEXT COMMAND. When bit B14 is set to
set to
"OH,
Bits BO-B7 define the character to be drawn. Bll-B12
define the size of character to be drawn,
determine rotation of the character. When bit B8 is set
"0"
to
rotation data. When set to
information is determined via data bits
VPC/Analog Handshake Sequence.
Analog Board sets VECTOR DONE high (forced
1.
by Stroker Restart
power-on. This line is normally controlled by
Ramp Generator
The Stroke Generator converts the binary data from
the
VPC
to analog deflection information. Since the XY Stroke Generator and the X-Y Amplifiers are
identical, only the X-Axis circuits will be described.
DIGITAL TO ANALOG CONVERTER.
AlUl and A1U2
latch the previous X coordinate for comparison with the
present X coordinate data.
A1U3 and A1U4 are 12 bit
DACs that convert the binary coordinate data to a
corresponding analog current. The output voltage of
operational amplifiers
AlU5 and A1U6 represents the
present and previous X coordinates. The difference
between these two voltages determines the next relative
beam movement in the
ANALOG MULTIPLIER.
plies two signals: the ramp generated by
DAC outputs. The output of
X
direction.
The Analog Multiplier multi-
AlU26, and the
AlUlO is a ramp whose
amplitude is a function of the desired relative X beam
movement and whose offset is a function of screen
location (see Figure 8-10).
PRtVlflllS
X
LATrHtS V
lV
PRESENT PREVIOUS RAMP K
RAMP GENERATOR.
The Ramp Generator (AlU26)
provides two signals: a ramp for X-Y beam movement,
and the gate pulse for beam blanking. In order to
maintain a constant intensity level for different vector
length, the slope
of
the ramp (writing speed) must be
held constant. The ramp slope is controlled by a
combination of four inputs to
for the current
4-+
A105 06 1120 U21 WHITING
Figure
8-11,
definitions).
Current Definition For Ramp Generator
AlU26. (See Figure 8-11
:$--l-------'
SPEED
13
ARSOLLJTL LURRFNT VALlJE 01
1,
ABSOLUTE CURRENT VALlJt
18
CURRFN1 PROPORTIONAL TO PROLRAMMFD WRITING
SPFFD
11
1 URRENi
SET
BY
WRlTlNC; SPEED AD.llJbTMbNT AlR70
iX
OF
iY
amplifiers are identical, only the X amplifier will be
described. The X amplifier
consits of a preamplifier
(AlU29j and an output amplifier (A1Q7-A1 Q12). The
differential output from preamp
two identical amplifiers
AlU29 is applied to
AlQ7-AlQ9 and AlQlOAlQ12. The signal voltage is raised by these two
amplifiers to the required level to drive the horizontal
deflection plates. The gain of the output amplifier is
stabilized by the negative feedback path through
AIR92 and AIR101. The gain and balance of the X
amplifier is set by
Z-AXIS AMPLIFIER.
AIR87 and AIR82 respectively.
The operating potential between
the CRT grid and cathode is controlled by the Z-Axis
amplifier output level. The amplifier consists of the
Z-
Axis preamp located on the Stroke Generator assembly
(Al) and the Intensity Amplifier located on the High
Voltage Power Supply assembly
preamp
Amplifier
AlU27 is applied to the Focus Correction
(A1U31) and the Intensity Amplifier A4Q4-
(A4). The output of the
A4Q6. The output of emitter follower AlQ4 is applied to
amplifier
A1Q5 and AlQ6 where the signal amplitude
is raised to the required level to control the operating
potential of the CRT control grid. Intensity Amplifier
gain is stabilized by the negative feedback path
through
AlR11. AlCR5 and AlCR6 provide protection
for the Intensity Amplifier output stage against arcs
and transients.
Figure
V PRtStNl ANAllll, VUllA1.I
V
PR[VlOlJS ANALOG VOllAbf 01 l'l~lVlI!ll~ i I
V RAMP HAMP AMPIITIIOF hFNfHATll! l%Y A1111h
K
GAINS OtltRMlNEO
ADJUSTMENT IAlRZOi AND CIRCUIT GAINS
/1-b
8-10.
Simplified Block Diagram of Analog Multiplier.
I
Ill
RY
STROKI LLNLTH
YHI\INT i lOORlllNATF
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INTENSITY CONTROLLER.
The Intensity Controller
converts digital line writing and intensity information
to analog voltages for use by the Intensity Amplifier.
The only other input to the Intensity Controller is the
gate pulse for beam blanking generated by
current controlled oscillator in
AlU25 generates two
AlU26. The
chopping frequencies: one for short dash line type and
the other for long dash line type.
X-Y AMPLIFIERS.
They amplify the
Analog Multiplier
horizontal and vertical deflection plates.
Component Locator for 3A
The X and Y amplifiers areidentical.
X
and Y analog coordinates from the
(AIU7, AllJ19) to drive the CRT
Slice both
is
shown on
Service Sheet
38 & 3C.
FOCUS CORRECTION AMPLIFIER.
The Focus Correction circuit provides an optimum focused display over
the entire viewing area. The amplifier uses three inputs
for proper focus correction voltage generation. A
voltage proportional to the beam position is coupled
from the X and Y preamps to
The
Z
axis correction voltage is fed from the Z axis
preamp to the output of
Balance is adjusted by
AIR142 and AlR135, the Y Gain
and Balance is adjusted by
AlU31L) and AlU31 A.
AlU31B. The X Gain and
AIR145 and AlR138. The
focus correction signal is applied to Focus Output
amplifier
A4Ql-A4Q3. The Output amplifier operates
identical to the Intensity Amplifier.
Page 86
amplifiers are identical, only the X amplifier will be
amplifier consits of a preamplifier
(AlU29) and an output amplifier (AlQ7-AlQ12). The
differential output from preamp
two identical amplifiers
AlU29 is applied to
AlQ7-AlQ9 and AlQ10-
AlQ12. The signal voltage is raised by these two
amplifiers to the required level to drive the horizontal
deflection plates. The gain of the output amplifier is
stabilized by the negative feedback path through
AIR92 and AlR101. The gain and balance of the
X
amplifier is set by AIR87 and AIR82 respectively.
Service
ANALOG BOA93
POWER 31STRIBUTION
Model
1349A
Z-AXIS AMPLIFIER.
The operating potential between
the CRT grid and cathode is controlled by the Z-Axis
amplifier output level. The amplifier consists of the
Z-
Axis preamp located on the Stroke Generator assembly
(Al) and the Intensity Amplifier located on the High
Voltage Power Supply assembly
preamp
Amplifier
AlU27 is applied to the Focus Correction
(AlU31) and the Intensity Amplifier A4Q4-
(A4). The output of the
A4Q6. The output of emitter follower A1Q4 is applied to
amplifier
A1Q5 and A1Q6 where the signal amplitude
is raised to the required level to control the operating
potential of the CRT control grid. Intensity Amplifier
gain is stabilized by the negative feedback path
through AlR11. AlCR5 and AlCR6 provide protection
for the Intensity Amplifier output stage against arcs
and transients.
FOCUS CORRECTION AMPLIFIER.
The Focus Correction circuit provides an optimum focused display over
the entire viewing area. The amplifier uses three inputs
for proper focus correction voltage generation. A
voltage proportional to the beam position is coupled
X
from the
and Y preamps to AlU31D and AlU31A.
The Z axis correction voltage is fed from the Z axis
preamp to the output of
Balance is adjusted by
and Balance is adjusted by
AlU31B. The X Gain and
AIR142 and AlR135, the Y Gain
AIR145 and AlR138. The
focus correction signal is applied to Focus Output
amplifier
The purpose of the Low Voltage Power Supply is to
provide the
+105V for the
the Intensity Amplifier, and the High Voltage Power
Supply. The supply consists of only one primary circuit,
the
+105V supply. All other required operating
voltages must be provided by an external supply. The
+
105V power supply is a switching supply consisting of
A3U1, A3Ql,A3Q2 and A3Tl. A3U1 contains all the
functions necessary for current limiting; regulating
and switching the power transistors
A3C5 and A3R4 determine the switching frequency of
the oscillator of
voltage.
A3CR3 and A3CR4 make up the rectifier.
A3U1. A3T1 steps up the switching
Filtering is accomplished by
adjusts the + 105V supply.
X-Y
Deflection Amplifiers,
A3Q1 and A3Q2.
A3L2 and A3C7. A3R11
POWER PLUG
TO
Il-V
TO
TO ANALOG BOARD
BOARO
vrcroR
BOARD
DISTRIBUTION
ATTACH
POWER
TOP
OSCILLATOR SIGNAL AT A3111 PIN
BOTTOM (OLLFCTOR
OF
A301
PLUG TO ANALOG
+
SUPPLY UP
-&7
r-
END
Li
CHECKS ON
H-V BOARO
VECTOR BOARO
ANALOG BOARO
TO ISOLATE
PROBLEM TO A
INVERTER
SUPPLY UP
SUPPLY BOARD
7
VOLTAGE ON
EXTERNAL
POWER
POWER DISTRIBUTION POWER DISTRIBUTION TO VECTOR PROC BO
GO TO ANALOG
ED.
POWER DISTRIBUTION
OR
SHORT TEST
ON
HV
BOARD
REPLACE
OR ANALOG
Figure
8-18.
Low Voltage Power Supply Troubleshooting Flow Chart.