Siemens SIRECUST 1280 User manual

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SIEMENS
System SIRECUST
SIRECUST 1280/1281 Bedside Monitors
Service Manual
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Copyright © SIEMENS AG 1990
All rights reserved.
Reproduction in any manner, in whole or in part, in English or in other languages, except for brief excerpts in reviews or
scientific papers, is prohibited without prior written permission of SIEMENS AG.
Copyright © SIEMENS AG 1990
Alle Rechte vorbehalten.
Nachdruck, auch auszugsweise oder in Ubersetzung, ist ohne Genehmigung der SIEMENS AG verboten.
Copyright © SIEMENS AG 1990
Droits de reproduction réservés.
Ce document, al’exception de quelques passages pour des revues ou articles scientifiques, ne peut étre reproduit, traduit,
en tout ou partie, que sur autorisation écrit de SIEMENS AG.
Copyright © SIEMENS AG 1990
Es propiedad © SIEMENS AG, 1990
Todos los derechos reservados.
Se prohibe la reproducción en parte o completa en español o en cualquier otra lengua, con excepción de breves pasajes
para reseñar o para documentos científicos, sin previo permiso de Siemens AG.
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System SIRECUST
1280/1281 Bedside Monitor
Service Manual

SIRECUST 1280/1281 BEDSIDE MONITOR - SERVICE MANUAL
TABLE OF CONTENTS
Chapter 1. INTRODUCTION
Chapter 1 contains general information about the monitors and about the manual.
Chapter 2. MONITOR OPERATIONS
Chapter 2 contains brief descriptions of monitor operations, both as a standalone
system and as a sub-system of a SIRENET network.
Chapter 3. INTERNAL MONITOR FUNCTIONS
Chapter 3 details operation of sub-systems within the monitor from a functional block
diagram perspective.
Chapter 4. REMOVING/INSTALLING SYSTEM COMPONENTS
Chapter 4 lists step-by-step procedures for disassembling and reassembling the
monitor, and for removing and installing replaceable components and sub-
assemblies.
Chapter 5. FUNCTIONAL VERIFICATION
Chapter 5 outlines procedures for verifying proper operation of monitors, in
accordance with SIEMENS specifications, and references appropriate service
procedures in the event of a possible malfunction.
Chapter 6. TROUBLESHOOTING
Chapter 6 provides a logical procedure for isolating and identifying causes of
possible malfunctions, and refers service personnel to appropriate Sections in the
Manual for procedures to correct the malfunction.
Chapter 7. CALIBRATION/ADJUSTMENT
Chapter 7 describes recommended procedures for calibrating and adjusting the
monitors circuits to maintain optimum performance of the monitor in accordance with
SIEMENS specifications.
IT,

TABLE OF CONTENTS (Continued)
Appendix A. REPLACEMENT PARTS
Appendix A is a listing of replacement parts, and references assembly drawings to
indicate positioning of the parts within the monitor.
Appendix B. WIRING/SCHEMATIC DIAGRAMS
Appendix B consists of an overall monitor wiring diagram and a set of schematic
diagrams for the printed circuit boards contained within the monitor.
Appendix C. PC BOARD JUMPER SETTINGS
Appendix C consists of a set of drawings which show the positioning of jumpers on
the printed circuit boards.
Appendix D. GLOSSARY OF SIGNALS
Appendix D is a listing of the signals found on each of the printed circuits within the
monitor.
Appendix E. SUPPLEMENTAL INFORMATION
Appendix E contains descriptions of buildable test equipment and a description of
the Self-test ERROR Codes and Messages provided by the monitor. It is also a
place within the Manual for retaining supplemental information that is distributed to
the field from time to time.
Appendix F. FUNCTIONAL VERIFICATION/PERFORMANCE CHECKLISTS
Appendix F contains forms for recording results of periodic maintenance and
functional verification.

CHAPTER 1
INTRODUCTION
TABLE OF CONTENTS
1.1. Service Manual Overview
1.1.1. Structure of the Manual
1.2. Safety Summary ...........................,..,,.,,.....
1.3. SIRECUST 1280/1281 Monitors
1.8.1. General Overview ..................................,...
1.3.2. Alarm Handling ...............................,,,,,...
1.3.8. Monitor Control .......................................
1.3.4. Monochrome vs Color Displays
1.3.5. The SIRENET Network
1.3.6. Standalone Operation
a
1.4. Parameter Cartridges
1.5. Technical Data... ，
1.6. Maintenance Recommendations
1.6.1. Cleaning and Disinfecting ....................,............
1.6.2. Optimizing Monitor Performance
LIST OF FIGURES
Figure 1-1: Technical Data .............................,........
Figure 1-1: Technical Data (Continued)

E331.E2501.061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
1. INTRODUCTION
1.1. Service Manual Overview
This Manual contains information to
enable qualified service personnel to
service SIRECUST 1280/1281 monitors at
the replaceable module level. In light of
the state-of-the-art technology used in
SIEMENS equipment, proprietary nature
of the software, and specialized equip-
ment required in the replacment of some
individual components, SIEMENS recom-
mends troubleshooting and repair only to
the board or replaceable part level.
Replaceable parts are items that can be
replaced with minimal or no desoldering
of circuit components. Replacement of
components other than those listed in
Appendix A should be performed at
SIEMENS service depots.
1.1.1. Structure of the Manual
The Manual has been structured to facili-
tate rapid and effective servicing of
SIRECUST 1280/1281 monitors.
Chapter 1. Introduction: provides
general information about the monitors
and about the manual.
Chapter 2. Monitor Operations: contains
brief descriptions of monitor operations,
both as a standalone system and a sub-
system of a SIRENET network.
Chapter 3. Internal Monitor Functions:
details operation of sub-systems within
the monitor from a functional block
diagram perspective.
Chapter 4. Removing/Installing System
Components: lists step-by-step proce-
dures for disassembling and reassembling
the monitor, and for removing and install-
ing replaceable parts and sub-systems.
Chapter 5. Functional Verification:
outlines procedures for verifying proper
operation of monitors, in accordance with
SIEMENS specifications, and references
appropriate service procedures in the
event of a possible malfunction.
Chapter 6. Troubleshooting: provides a
logical procedure for isolating and
identifying causes of possible mal-
functions, and refers service personnel to
appropriate Sections in the Manual for
procedures to correct the malfunction
Chapter 7. Calibration/Adjustment:
describes recommended procedures for
maintaining optimum performance of the
monitor.
Appendix A. Replacement Parts List
Appendix B. Wiring/Schematic Diagrams
Appendix C. PC Board Jumper Settings
Appendix D. Glossary of Signals
Appendix E. Supplemental Information
Functional Verification/
Performance Checklists
Appendix F.
1.2. Safety Summary
CAUTION statements identify conditions
Or practices that can result in damage to
equipment or other property.
CAUTION: Printed circuit boards in this
monitor contain components which are
easily damaged by Static-electricity. Open
the monitor only in a static-protected
environment. Observe proper servicing
procedures to prevent damage to the
equipment resulting from static discharge.
WARNING statements identify conditions
or practices that can result in personal
injury.
WARNING: Do not operate this product
in the presence of flammable gasses or
liquids. If this device is used where
flammable anesthetics, skin cleansers, or
disinfectants are employed, the possibility
of an explosion cannot be excluded. This
Page 1-1

ЕЗЗТ.Е2501.001.21.0=.Ое
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
product must be operated only in strict
conformance with local fire prevention
regulations.
1.3. SIRECUST 1280/1281 Monitors
1.3.1. General Overview
SIRECUST 1280 and 1281 units are eight-
channel bedside patient monitors having
12" screens that incorporate two different
display technigues for presentation of
waveforms and alphanumerics. An XY-Z
display function draws waveforms as
continuous lines, while a conventional
raster mode produces letters, symbols,
and graphics. Through the use of indiv-
idual cartridges designed to convert
human physiological vital signs into
electrical signals, the monitors acquire,
process, display, store and transmit a
variety of waveforms, measured values
and derived patient parameters. Up to
eight physiological waveforms and twenty-
one calculated parameters can be
displayed simultaneously.
1.3.2. Alarm Handling
The monitor provides audible and visual
alarm indications. An alarm condition
exists whenever a parameter value is
outside a defined range, and for specific
technical situations such as loss of
electrode contact with a patient or the
occurrence of artifact in a monitored
signal. The three audible alarm levels are:
Advisory - low frequency tone
Serious - high frequency
tone
Life-threatening - distinctive two tone
In a multi-bedside environment, the
variable alarm tone makes it possible to
differentiate among the different alarm
grades. Two different keys are available
for handling audible alarms: one key
silences an individual alarm and another
suspends all alarms.
1.3.3. Monitor Control
A state-of-the-art TouchScreen User Inter- .
face with menu-driven function selection
controls the many functions of the
monitor. At the bedside, operating
commands are entered through the
TouchScreen in the form of specific KEY
sequences.
The TouchScreen contains both fixed
keys and program keys. Fixed keys are
defined for essential functions that must
always be quickly accessible. Specific
program keys appear on the screen
depending on the function involved. All
functions are menu driven. Monitor opera-
tions can also be controlled from a
central station if the monitor is connected
into a SIRENET network.
Refer to the System SIRECUST 1280/1281
Bedside Patient Vital Signs Monitor Oper-
ating instructions for the installed software
version, Order No. A91004-M3331-L079-
XX-7600, for a detailed description of
monitor operations and key seguences.
Monochrome vs Color
Displays
1.3.4.
SIRECUST 1280 and 1281 monitors differ
only in the color capability for displaying
waveforms. The “1" in 1281 designates a
multi-color display capability. A liquid
crystal shutter in front of the monochrome
CRT, enables SIRECUST 1281 monitors
to display waveforms in four (4) colors --
red, green, yellow and orange.
SIRECUST 1280 monitors display
waveforms only in yellow-green.
1.3.5, The SIRENET Network
As part of a centralized patient monitoring
system, SIRECUST 1280/1281 bedside
units can be connected to a central
station and SIREDOC recorders via a high
speed communication link, the SIRENET
network. Within the SIRENET network,
each device is interconnected to all other
devices in the network.

E331.E2501.061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
1.3.6. Standalone Operation
Beginning with software version VEO, the
bedside monitor can directly initiate
SIREDOC recordings without being
connected into the SIRENET and a
central station. Up to two SIREDOC
recorders (S60 and/or S220) can be
connected to a standalone bedside
monitor.
1.4. Parameter Cartridges
Monitors have been designed to support
up to two remote cartridge units, called
SIREMs, each of which can accommodate
up to four (4) physiological parameter
cartridges. Patient data are digitized
inside the cartridges, and then transmitted
to the SIREM via infrared signals through
"windows" in the back plates of the
cartridges. The small compact size of a
SIREM allows it to be placed close to the
patient, while the monitor is mounted
elsewhere at a more convenient location
for easy accessibility by the nurse or
other staff members. Refer to the Operat-
ing Instructions (see Section 1.3.3) for a
description of all patient parameter
cartridges.
NOTE: Software versions up to and
including VEO support only 1 SIREM in a
single monitor.
1.5. Technical Data
Refer to Figure 1-1 for technical data
pertaining to System SIRECUST 1280
monochrome and 1281 color monitors.
Line Voltage Requirements
Power Consumption
(including 1 SIREM configured with
1 LIM cartridge, 1 Pressure cartridge,
and 1 pCO, cartridge)
Protective Class
Leakage current (housing)
Operating Temperature
Relative Humidity
TECHNICAL DATA: SIRECUST 1280/1281 MONITORS
90 to 132 VAC or 180 to 264 VAC, @ 48 to 62 Hz
155 W, SIRECUST 1280 (monochrome)
175 W, SIRECUST 1281 (color)
VDE 0750 Class 1, IEC 601-1 Class CF, UL544,
CSA 22.2 number 125
<100 uA @ 121 VAC 60 Hz (in accordance with UL544);
<500 uA © 242 VAC 50 Hz (in accordance with IEC 601-1)
Operation:+10°C to +40°C
Storage:-40°C to +75°C
Cooling Convection (no fan)
Operation: 30% < R.H. < 95%
Storage: 10% < R.H. < 100%
Color Housing: gray-white.
Front panel: gray-brown.
Rear: silver-metallic
Dimensions 10.5 in (266 mm) H x
17.25 in (439 mm) W x
14.25 in (860 mm) D
Weight 36 lb. (16.5 kg)
Figure 1-1: Technical Data
Page 1 - 3

E331 .E2501 .061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
TECHNICAL DATA: SIRECUST 1280/1281 (Continued)
General Display Functions
Display Screen Size
Deflection Speed
Depiction mode
Trend
Brightness
SIRECUST 1280 - Monochrome display
Raster Resolution
X-Y Resolution/channel
Bandwidth
Depiction color
SIRECUST 1281 - Color Display
Raster Resolution
X-Y Vertical Resolution/channel
Bandwidth
Depiction Colors
12 in (30 mm) diagonal, 9 in (233 mm) x 7 in (170 mm) usable area
6.25, 12.5, 25, and 50 mm/s
“paper mode”
4 pages; up to 23 different parameters over 24 hours
Manually adjustable, automatic adjustment to ambient lighting
600 x 400 pixels
1920 pixels (horizontal) x 2040 pixels (vertical)
100 HZ at 13 mm, 50 mm/s
Yellow-green
480 x 320 pixels
1920 pixels (horizontal) x 2040 pixels (vertical)
100 HZ for curves 1 and 2, at 14 mm amplitude and 50 mm/s;
50 Hz for curves 3 thru 8, at 50 mm/s
Red, green, yellow, and orange
Figure 1-1: Technical Data (Continued)
1.6. Maintenance Recommendations
1.6.1. Cleaning and Disinfecting
Refer to the Operating instructions,
SIEMENS Order No. A91004-M3331-L079-
XX-7600 for recommendations regarding
regular cleaning and disinfecting.
1.6.2. Optimizing Monitor
Performance
To assure optimum performance of
SIRECUST 1280/1281 monitors, SIEMENS
recommends that a complete operational
check be performed annually. Follow the
procedures of Chapter 5, Functional Veri-
fication, and Chapter 7, Calibration/
Adjustment, Sections 7.1 and 7.2. Record
results on the form provided in
Appendix F.
Page 1 - 4

CHAPTER 2
MONITOR OPERATIONS
TABLE OF CONTENTS
2. OVERVIEW OF MONITOR OPERATIONS
2.1. Power OFF/ON ο εν νο νε νε εν εκ εν ον εκ εκ εκ εκ εκ νε κ εν
2.2. Control Keys
2.2.1. Fixed Keys ..........................................
2.2.2. Parameter Keys
2.2.8. Program Keys
2.3. Screen Formats
2.3.1. Help Screen
2.3.2. Main Screen ..................,.........,..............
2.3.2.1. Message Area
2.3.2.2. Menu Area ..,.....,,,.,,.,.,.......,,,,.,.,,,,,...
2.3.2.3. Keypad Area ..............,,.........,..............
2.3.2.4. Waveform Area .............,................,,,...
2.3.2.5. Parameter Key and Display Area
2.3.2.6. Limits Display Area
2.3.3. Пепа Эсгееп .......... aaa
2.3.3.1 Message, EKG Waveform, Heart Rate Parameter Areas
2.3.3.2. Trend Graph/Menu Areas
2.3.4. Remote Screen
a
2.4, TouchScreen Calibration
LIST OF FIGURES
Figure 2-1. Main Screen Display ...........,....,..,.,.............
Figure 2-2. Main Screen Display with All Areas Activated
Figure 2-3. Trend Screen Display .....................,..,........
Figure 2-4. Touch Screen Calibration Display

E331 .E2501 .061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
2. OVERVIEW OF MONITOR
OPERATIONS
This Chapter is intended to be used as
only a brief overview to assist qualified
service personnel in servicing the monitor.
For detailed instructions and monitor
operations consult the Operating Instruc-
tions and Supplement for the installed
software version, SIEMENS Art. No.
A91004-M3331-L079-XX-7600.
2.1. Power OFF/ON
1. Plug the monitor main power input
cable into a hospital-grade power
outlet of proper operating voltage.
NOTE: Refer to Chapter 3, Section 3.8
and the procedures outlined in Chap-
ter 4, Section 4.1., if necessary to verify
or change the operating line voitage for
which the monitor has been configured.
When viewed from the back of the
monitor, the main power input cable |
plugs into the connection near the bottom
right corner. A rocker switch located just
above the power input socket controls
main power OFF/ON.
2. Toggle the main power switch ON.
The green POWER INDICATOR LIGHT in
the lower right corner on the front panel
illuminates. The unit performs a self-test
and displays a series of messages, e.g.
¢ TESTING DISPLAY BOARD PROMS
‧ TESTING GDC MEMORY
* TESTING FRONT END BOARD PROM
+ TESTING FRONT END BOARD RAM
The exact sequence and number of
messages is software dependent. Upon
successful completion of the self-test, the
main screen display appears. Figure 2-1
depicts a typical main screen display.
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Figure 2-1. Main Screen Display
Page 2-1

E331.E2501.061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
2.2. Control Keys
Three types of keys are used for
operating the monitor --
+ Fixed Keys
+ Parameter Keys
e Program Keys
Control keys are positions on the front
panel that are touch sensitive. Activate a
key by direct, firm, finger pressure in the
center of the key. The monitor responds
with a short beep to acknowledge that
pressing the key position on the Touch-
Screen has successfully generated a
control signal input.
2.2.1. Fixed Keys
Frequently used functions such as
ALARM SILENCE or PRINT SCREEN are
activated by fixed keys located on the
front panel to the right of the screen.
Fixed key functions are independent of
the current display.
NOTE: CALC,, C, and D are inactive keys
with software versions VE and below.
Pressing them produces no response in
the monitor.
2.2.2. Parameter Keys
Parameter fields function as keys to
access the entry menu into a parameter's
menu tree. Pressing the key causes it to
flash briefly. Refer to Section 2.3.2.5. for
additional information.
2.2.3. Program Keys
Program keys appear when their parent
menu is accessed, and control all
functions within the menu. Their function
and position vary with different menus.
2.3. Screen Formats
Three screen formats are available --
Main Screen, Trend Screen, and Remote
Screen. A Help Screen can also be
accessed to assist in operating the
monitor.
To access a specific screen format, press
the key with the same name, MAIN,
TREND, REMOTE or HELP located in the
fixed key area on the right side of the
front panel.
2.3.1. Help Screen
The Help screen explains the Touch-
Screen and menu-driven operation of the
monitor.
2.3.2. Main Screen
The Main Screen is the monitor's default
screen, and is divided into six areas.
When all areas are activated at the same
time the screen appears as illustrated in
Figure 2-2, The areas are --
Message area
Menu area
Keypad area
Waveform area
Parameter key and display area
Limits display area
Oakwn>
2.3.2.1. Message Area
The message area is always active, and
occupies the narrow band across the top
edge of the screen. It displays the
following information:
* systems and alarm messages |
* bed numbers
* time, and date.
* diagnostic messages (when acti-
vated under the field service menu)
2.3.2.2. Menu Area
When activated, the parameter menu area
for the Main screen occupies 30%-40% of
the left side of the screen. It overlays part
of the waveform display area, and con-
tains program touch keys for accessing
parameter functions. When not activated,
Page 2-2
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E331.E2501.061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
the area extends the waveform display
area. See Section 2.3.2.4.
2.3.2.3. Keypad Area
The keypad, when activated, appears in
the waveform field and overlays all
waveforms except the real-time EKG
waveform at the top of the screen. Refer
to Section 2.3.2.4. Enter numerical data,
such as alarm limits, on the keypad.
Always press the ENTER key to complete
an entry.
2.3.2.4. Waveform Area
The waveform area can display up to
eight waveforms and is the largest of the
display areas, occupying up to approxi-
mately 70% of the screen. The actual size
of the waveform area varies with activa-
tion/deactivation of the menu and keypad
areas.
From top to bottom, the waveform area is
divided into three smaller areas --
+ Real-time EKG area: occupying the
top portion,
* Pressure area: occupying the middle
portion, and |
* General waveform’ display:
occupying the bottom portion.
The size of the individual areas can vary
depending on the actual number and kind
of patient parameters being monitored.
2.3.2.5. Parameter Key and Display
Area
The parameter key and display area is
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Figure 2-2 Main Screen Display with All Areas Activated
Page 2-3

E331.E2501.061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
located on the right-hand side of the
screen immediately adjacent to the fixed
key area, and is divided into four, six, or
eight boxed areas refered to as
parameter fields. An entire parameter field
acts as a key to access the parameter’s
menu. Each waveform is displayed next
to its specific parameter. An arrow next to
a field indicates that the parameter menu
corresponding to that is active.
Fields may contain symbols and
messages. Content varies from parameter
to parameter as well as within a para-
meter, depending on selections made.
Figure 2-2 illustrates the locations of the
various areas on the display screen.
NOTE: With VFO software, if more than
one parameter is contained in a field, the
“primary" parameter display is larger than
the "secondary" parameter display.
2.3.2.6. Limits Display Area
Limits display areas for up to two sets of
alarm limits have been incorporated into
the parameter key and display boxes.
Limits are displayed whenever an alarm
has been enabled. For pulsatile
pressures, a third limits display appears in
the waveform field immediately adjacent
to the systolic pressure label. Crossed-
bell symbols replace limits when alarms
have been disabled.
2.3.3. Trend Screen
The trend screen contains six display
areas, as shown in Figure 2-3. They are --
* Message area
* Real-time EKG waveform area
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Figure 2-3. Trend Screen Display
Page 2-4

E331.E2501.061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
e Heart rate parameter area
e Trend graph area
e Trend menu area
e Notes/alarm area
2.3.3.1 Message, EKG Waveform,
Heart Rate Parameter Areas
The message, real-time EKG waveform,
and heart rate parameter areas of the
trend screen are identical to the
corresponding areas of the Main screen.
2.3.3.2. Trend Graph/Menu Areas
The trend graph area replaces all except
the real-time EKG waveform in the
waveform area of the main screen, and
the trend menu replaces. the parameter
area except for the heart rate parameter |
field. Trend menus cannot be deactivated
and removed from the trend screen.
2.3.4. Remote Screen
The remote screen function enables
patient data from a remote bed to be
displayed at a local monitor. The screen
has several display modes --
* Entire screen of a remote bed
*« Portions of the main screen of a
remote bed and the local bed
e Cluster screen
Refer to Chapter .8 in the Operating
Instructions manual for a detailed
discussion of the remote screen function.
CANCEL
CALIBRATION
* G—— TOUCH TOP HIT MARK
TOUCH LOWER HIT MARK — +
Figure 2-4. Touch Screen Calibration Display
Page 2-5

E331.E2501.061.21.02.02
System SIRECUST 1280/1281 Bedside Monitor - Service Manual
2.4. TouchScreen Calibration
The calibration process identifies specific
screen positions to the software, so that
the software can correctly relate positions
on the TouchScreen to specific operator
commands when the operator touches
the screen. See Figure 2-4. This
procedure is considered to be an opera-
tional calibration to be performed at the
bedside, and should rarely be required in
normal monitor operations. Refer to
Troubleshooting, Chapter 6, if monitor
fails to retain TouchScreen calibration.
NOTE: Fixed keys are inactive during
TouchScreen calibration.
1. After the monitor completes is
start-up self-tests, exert gentle
finger pressure anywhere on the
left haif of the display screen
before you touch any other option
of the screen, to initiate the
calibration program.
2. Touch each mark on the resulting
display as directed by the prompts
that appear on the screen.
NOTE: Press CANCEL CALIBRATION at
anytime to abort the calibration program.
The message CALIBRATION FINISHED
appears briely at the end of the
calibration process, and the display
changes to the main screen display.
Page 2-6

TABLE OF CONTENTS (Continued)
3.8. Power Supply ................................,........ 23
3.8.1. Main Inverter ..,......................,,.....,,....... 23
3.8.2. Auxiliary Inverter ..............................,....... 24
3.9. MonitorDisplay ......................... a 25
3.9.1. Color Shutter ........................................ 26
3.10. OptionBoards..................... eee 27
3.11. Clock Board ......................................,... 27
3.12. Master Option Board ...............,..................... 27
3.12.1. 68008 Processor and Associated Circuitry ................. 27
3.12.2. Direct-Memory-AccessControl .......................... 27
3.12.3. Addressing and Controlling Data Exchange................. 28
3.12.4. RAM/ROM and Real-Time Clock Circuitry .................. 28
3.12.5. Sub-Option Board Locations ........................... 31
3.13. Analog Sub-Option Board .......................,......... 32
3.13.1. Functional Operation ....................,.,.,........ 33
3.13.2. Location vs. Signal Priority ........................ dress 33
3.14. RS-232 Serial Sub-Option Board ............................ 33
3.14.1. Functional Operation ...........................,...... 33
3.15. 4-Channel Analog Option Board ..........................., 35
3.16. Memory Extension Board ........................,......... 37
3.17. Motherboard .......................................... 37
3.18. Line Driver Board ....................................... 37
3.19. Memory Backup ....................................... 37
3.20. Operational Support Equipment ............................ 37
3.20.1. Remote Cartridge Unit (SIREM) ......................... 37
3.20.2. LIM Cartridge ..:.....................,.......,..... 39
m

Figure 3-1.
Figure 3-2.
Figure 3-3.
Figure 3-4.
Figure 3-5.
Figure 3-6.
Figure 3-7.
Figure 3-8.
Figure 3-9.
Figure 3-10.
Figure 3-11.
Figure 3-12.
Figure 3-13.
Figure 3-14.
Figure 3-15.
Figure 3-16.
Figure 3-17.
Figure 3-18.
Figure 3-19.
Figure 3-20.
Figure 3-21.
Figure 3-22.
Table 3-1.
Table 3-2.
Table 3-3.
Table 3-4.
Table 3-5.
Table 3-6.
Table 3-7.
Table 3-8.
LIST OF FIGURES
SIRECUST 1280/1281 Monitors: Basic Block Diagram .......... 1.
SIRECUST 1280/1281 Monitors: Board and System Component
Interconnections ..................................... 2
Channel Conversion Memory Map ........................ 4
Front End Board Block Diagram .....................,,.... 5
Display Processor Block Diagram ...................,..... 6
VME BUS Timing .............................,.,.... 7
Curve Board Timing (Monochrome Display) ................ 10
Curve Board Timing (Color Display) ...................... 10
Curve Board Block Diagram ........................... 13
Deflection Board - Block Diagram ........................ 14
Z-amplifier Board Block Diagram ........................ 19
Operator Interface Board Block Diagram ................,,.. 20
TouchScreen Circuit Function .................,,,....... 21
Power Supply - Block Diagram .......................... 22
Positioning X4 .......................... aaa 23
Typical Waveform Screen .............................. 25
Combined XYZ and Raster ............................ 26
Master Option Board Block Diagram ...................... 29
Analog Sub-Option Board Block Diagram .................. 30
RS-232 Serial Sub-Option Board Block Diagram ............. 30
Master Option Board: Sub-Option Board Locations ........... 31
Monitor with SIREM and LIM ........................... 38
LIST OF TABLES
A140/A280 Power Supply Test Points ....................... 24
Sub-Option Board Location/SDL Connector/Output Relationships ... 32
MOB Output Table .......................,,.,........... 32
MOB SDL Connector Signal Assignments .................... 32
ASO Input/Output Connector Table ........................ 34
Input/Output Connector Table ............................ 34
MOB Jumper Table .................................... 35
SSO Input/Output Connector Table ........................ 36