Tektronix SDA601 Service Manual
Service Manual
SDA601
Serial Digital Analyzer
070-8914-04
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com
Copyright © Tektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its subsidiari es or
suppliers, and are protected by national copyright laws and international treaty provisions.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifica tions and price change privileges reserved.
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.
Contacting Tektronix
Tektronix, Inc.
14200 SW Karl Braun Drive
P.O. Box 500
Beaverton, OR 97077
USA
For product information, sales, service, and technical support:
H In North America, call 1-800-833-9200.
H Worldwide, visit www.tektronix.c om to find contacts in your area.
Warranty 2
Tektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year
from the date of shipment. If any such product proves defective during this warranty period, Tektronix, at its option, either
will repair the defective product without charge for parts and labor, or will provide a replacement in exchange for the
defective product. Parts, modules and replacement products used by Tektronix for warranty work may be new or
reconditioned to like new performance. All replaced parts, modules and products become the property of Tektronix.
In order to obtain service under this warranty, Customer must notify Tektronix of the defect before the expiration of the
warranty period and make suitable arrangements for the performance of service. Customer shall be responsible for
packaging and shipping the defective product to the service center designated by Tektronix, with shipping charges prepaid.
Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the
Tektronix service center is located. Customer shall be responsible for paying all shipping charges, duties, taxes, and any
other charges for products returned to any other locations.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty a) to repair damage resulting
from attempts by personnel other than Tektronix representatives to install, repair or service the product; b) to repair
damage resulting from improper use or connection to incompatible equipment; c) to repair any damage or malfunction
caused by the use of non-Tektronix supplies; or d) to service a product that has been modified or integrated with other
products when the effect of such modification or integration increases the time or difficulty of servicing the product.
THIS WARRANTY IS GIVEN BY TEKTRONIX WITH RESPECT TO THE PRODUCT IN LIEU OF ANY OTHER
WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A P ARTICULAR PURPOSE. TEKTRONIX’
RESPONSIBILITY TO REP AIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE REMEDY
PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS VENDORS WILL
NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE POSSIBILITY
OF SUCH DAMAGES.
Table of Contents
Specifications
Operating Information
General Safety Summary vii...................................
Service Safety Summary ix....................................
Introduction 1--1.....................................................
Reference Documentation 1--1..........................................
Performance Conditions 1--1...........................................
Specification Tables 1--2..............................................
Certifications and Compliances 1--4.....................................
Getting Started 2--1..................................................
Supplying Power 2--1.................................................
Connecting the SDA601 2--3...........................................
SERIAL INPUT 2--4..............................................
AUX Output 2--4.................................................
RS-232 Interface 2--4.............................................
Keypad and Display Conventions 2--8....................................
The On-Screen Display (OSD) 2--9......................................
Preliminary Settings 2--10..............................................
Set the Date and Time 2--10.........................................
Set the Battery Type 2--11...........................................
Enable (Disable) Auto Power Off 2--11................................
Disable (Enable) Timed LCD Backlight Turn Off 2--12....................
Performance Verification 2--12..........................................
Using Your SDA601 2--12..............................................
Analyzing a Signal 2--13............................................
Watching a Signal 2--15............................................
Alarms 2--19.....................................................
LCD Display Modes 2--20..........................................
AUX Output Modes 2--23...........................................
Saving and Recalling Presets 2--25....................................
Software Reset 2--26...............................................
Performance Verification
Required Test Equipment 3--1..........................................
Performance Verification Checklist 3--3..................................
Performance Verification Procedures 3--4.................................
Adjustment Procedures
Required Test Equipment 4--1..........................................
Adjustment Procedures 4--2............................................
SDA 601 Serial Digital Analyzer
Preparation 3--4..................................................
Procedures 3--6..................................................
i
Table of Contents
Maintenance
Adjust SLM (Signal Level Meter) 4--2................................
Adjust the Deserializer VCO (“Serial Pot”) 4--4.........................
Set the Date and Time 4--7.........................................
Maintenance 5--1..............................................
Battery Hints 5--1....................................................
Preventive Maintenance 5--1...........................................
Cleaning 5--1....................................................
Static-Sensitive Components 5--2....................................
Troubleshooting Aids 5--3.............................................
Foldout Pages 5--3................................................
Diagrams 5--3...................................................
Circuit Board Illustrations 5--3......................................
Numbering 5--3..................................................
Self-Diagnostics 5--4..............................................
Corrective Maintenance 5--9...........................................
Obtaining Replacement Parts 5--9....................................
Torque Specification 5--9..........................................
Replacing Assemblies 5--10.........................................
Replaceable Electrical Parts
Replaceable Electrical Parts 6--1.................................
Parts Ordering Information 6--1.........................................
Using the Replaceable Electrical Parts List 6--1............................
Abbreviations 6--1................................................
List of Assemblies 6--2............................................
Column Descriptions 6--2..............................................
Replaceable Electrical Parts 6--4........................................
Diagrams
Diagrams and Circuit Board Illustrations 7--1.....................
Block Diagrams 7--1.................................................
Circuit Board Illustrations 7--3..........................................
Replaceable Mechanical Parts
Replaceable Mechanical Parts 8--1...............................
Parts Ordering Information 8--1.........................................
Using the Replaceable Mechanical Parts List 8--1...........................
Abbreviations 8--1................................................
Chassis Parts 8--2................................................
Column Descriptions 8--2..............................................
Replaceable Mechanical Parts 8--3.......................................
Index
ii
SDA 601 Serial Digital Analyzer
List of Figures
Table of Contents
Figure 2--1: Opening the Battery Compartment 2--2.................
Figure 2--2: Connecting the SDA601 2--3..........................
Figure 2--3: Connecting to a DTE Device with a DB25 Serial Port 2--5..
Figure 2--4: Connecting to a DCE Device with a DB25 Serial Port 2--6.
Figure 2--5: A Printed Analysis Report 2--7........................
Figure 2--6: The Default “Watching” OSD 2--9.....................
Figure 2--7: The Initial SDA601 Utility Menu Display 2--10............
Figure 2--8: The Set Time Display 2--10............................
Figure 2--9: Front and side views 2--13.............................
Figure 2--10: The Analyze OSD 2--14..............................
Figure 2--11: The Initial SDA601 Utility Menu Display 2--16...........
Figure 2--12: The SDA601 “Watching” Display 2--17.................
Figure 2--13: Watch Errors Reported on the OSD 2--18...............
Figure 2--14: The Display Mode Selection Keys 2--21.................
Figure 2--15: The SDA601 Signal Level Display 2--21.................
Figure 2--16: The Cursor Data Display 2--22........................
Figure 2--17: The SDA601 Time Display 2--23.......................
Figure 2--18: The First Review Display 2--23........................
Figure 3--1: An Equipment Setup for Performance Verification 3--4...
Figure 3--2: AUX Output Containing the On-Screen Display (OSD) 3--5
Figure 3--3: The Initial SDA601 Utility Menu Display 3--6............
Figure 3--4: The TSG601 Display Indicating Normal CRCs 3--7.......
Figure 3--5: The Analyze OSD 3--8...............................
Figure 3--6: The TSG601 Display Indicating an Erroneous FFCRC 3--9
Figure 3--7: The TSG601 Display Indicating an Erroneous APCRC 3--9
Figure 3--8: The TSG601 Display Indicating a Zero APCRC 3--10......
Figure 3--9: The SDA601 Cursor Display 3--11......................
Figure 3--10: The First Watch Menu Display 3--12...................
Figure 3--11: The I/O Menu/Highlighting Item Display 3--12...........
Figure 3--12: Page Five of the Watching OSD 3--15...................
Figure 3--13: SDA601-to-PC Cable Connections 3--16................
Figure 3--14: Initial Return Loss Setup 3-- 17........................
Figure 4--1: A Setup for SLM Adjustment 4--2.....................
Figure 4--2: The First SLM Calibration Display 4--3.................
SDA 601 Serial Digital Analyzer
iii
Table of Contents
Figure 4--3: A Setup for Adjusting the De-serializer VCO 4--5........
Figure 4--4: The “Adj Serial Pot” Menu Item 4--5...................
Figure 4--5: The VCO Lock Error Indicator 4--6....................
Figure 4--6: The “Set Time” Display 4--7..........................
Figure 5--1: Numeric SLM Data 5--7..............................
Figure 5--2: The SDA Number Keys 5--7...........................
Figure 5--3: Exploded View of the SDA601 5--10.....................
iv
SDA 601 Serial Digital Analyzer
List of Tables
Table of Contents
Table 1--1: Serial Digital Video Input 1--2.........................
Table 1--2: Signal Level Meter 1--2...............................
Table 1--3: AUX Output 1--2.....................................
Table 1--4: Power Supply 1--2...................................
Table 1--5: Physical Characteristics 1--3...........................
Table 1--6: Environmental Characteristics 1--3.....................
Table 2--1: RS-232 Connector Pin Assignments 2--5.................
Table 3--1: Required Test Equipment 3--1.........................
Table 3--2: Initial Settings for the Video Measurement Set 3--5.......
Table 4--1: Required Test Equipment 4--1.........................
SDA 601 Serial Digital Analyzer
v
General Safety Summary
Review the following safety precautions to avoid injury and prevent damage to
this product or any products connected to it.
To avoid potential hazards, use this product only as specified.
Only qualified personnel should perform service procedures.
ToAvoidFireor
Personal Injury
Use Proper Power Cord. Use only the power cord specified for this product and
certified for the country of use.
Connect and Disconnect Properly. Do not connect or disconnect probes or test
leads while they are connected to a voltage source.
Ground the Product. This product is grounded through the grounding conductor
of the power cord. To avoid electric shock, the grounding conductor must be
connected to earth ground. Before making connections to the input or output
terminals of the product, ensure that the product is properly grounded.
Observe All Terminal Ratings. To avoid fire or shock hazard, observe all ratings
and markings on the product. Consult the product manual for further ratings
information before making connections to the product.
Do not apply a potential to any terminal, including the common terminal, that
exceeds the maximum rating of that terminal.
Power Disconnect. The power cord disconnects the product from the power
source. Do not block the power cord; it must remain accessible to the user at all
times.
Do Not Operate Without Covers. Do not operate this product with covers or panels
removed.
Do Not Operate With Suspected Failures. If you suspect there is damage to this
product, have it inspected by qualified service personnel.
SDA 601 Serial Digital Analyzer
Avoid Exposed Circuitry. Do not touch exposed connections and components
when power is present.
Replace Batteries Properly. Replace batteries only with the specified type and
rating.
Recharge Batteries Properly. Recharge batteries for the recommended charge
cycle only.
Use Proper AC Adapter. Use only the AC adapter specified for this product.
Use Proper Fuse. Use only the fuse type and rating specified for this product.
Do Not Operate in Wet/Damp Conditions.
vii
General Safety Summary
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Terms in this Manual
Symbols and Terms
These terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
These terms may appear on the product:
H DANGER indicates an injury hazard immediately accessible as you read the
marking.
H WARNING indicates an injury hazard not immediately accessible as you
read the marking.
H CAUTION indicates a hazard to property including the product.
The following symbols may appear on the product:
viii
CAUTION
Refer to Manual
SDA 601 Serial Digital Analyzer
Service Safety Summary
Only qualified personnel should perform service procedures. Read this Service
Safety Summary and the General Safety Summary before performing any service
procedures.
Do Not Service Alone. Do not perform internal service or adjustments of this
product unless another person capable of rendering first aid and resuscitation is
present.
Disconnect Power. To avoid electric shock, switch off the instrument power, then
disconnect the power cord from the mains power.
Use Care When Servicing With Power On. Dangerous voltages or currents may
exist in this product. Disconnect power, remove battery (if applicable), and
disconnect test leads before removing protective panels, soldering, or replacing
components.
To avoid electric shock, do not touch exposed connections.
SDA 601 Serial Digital Analyzer
ix
Environmental Considerations
This section provides information about the environmental impact of the
product.
Product End-of-Life
Handling
Observe the following guidelines when recycling an instrument or component:
Equipment Recycling. Production of this equipment required the extraction and
use of natural resources. The equipment may contain substances that could be
harmful to the environment or human health if improperly handled at the
product’s end of life. In order to avoid release of such substances into the
environment and to reduce the use of natural resources, we encourage you to
recycle this product in an appropriate system that will ensure that most of the
materials are reused or recycled appropriately.
The symbol shown to the left indicates that this product
complies with the European Union’s requirements
according to Directive 2002/96/EC on waste electrical and
electronic equipment (WEEE). For information about
recycling options, check the Support/Service section of the
Tektronix Web site (www.tektronix.com).
Battery Recycling. This product may contain a Nickel Cadmium (NiCd)
rechargeable battery, which must be recycled or disposed of properly. Please
properly dispose of or recycle the battery according to local government
regulations.
Restriction of Hazardous
Substances
x
This product has been classified as Monitoring and Control equipment, and is
outside the scope of the 2002/95/EC RoHS Directive. This product is known to
contain lead, cadmium, mercury, and hexavalent chromium.
SDA 601 Serial Digital Analyzer
Specifications
Specifications
Introduction
The material in this section is organized into two main groupings: the specification tables and the supporting figures. The specification tables include:
H General input and output signal characteristics and specifications
H Physical and environmental specifications
The supporting figures (waveform diagrams and related data) follow the
specification tables.
Reference Documentation
The following documents were used as references in the preparation of these
specifications:
Recommendations and Reports of the CCIR, 1978; Transmission of Sound
Broadcasting and Television Signals Over Long Distances (CMTT).
Performance Conditions
The Performance Requirements are valid if the instrument has been adjusted at
approximately 25° C, is being operated within environmental limits (see
Table 1--3), and has had a minimum warm-up of 20 minutes.
IEEE Standard Dictionary of Electrical Terms, Second Edition (1977)
IEEE Standard 100--1977.
IEC 60B (Secretariat) 170, “Helical-scan digital composite cassette recording
system using 19 mm magnetic tape (Format D--2) (NTSC, PAL, PAL-M).”
ANSI/ISA S82 — Safety Standard for Electrical and Electronic Test,
Measuring, controlling, and Related Equipment.
CAN/CSA C22.2 No. 1010.1-92 — Safety Requirements for Electrical
Equipment for Measurement, control, and Labratory Use.
IEC1010-1 — Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use (1990).
SDA 601 Serial Digital Analyzer 1--1
Specifications
Specification Tables
Table 1--1: Serial Digital Video Input
Characteristic Performance Requirements Supplemental Information
Format CCIR 601 Component 525/625, 10 bits data,
Scrambled NRZI; 270 Mb/s. Complies with SMPTE
259M and CCIR 656.
Input Impedance 75 Ω
Input Level 800 mV ± 80 mV (peak-to-peak) at signal source
Return Loss ≥ 15dB 1 MHz to 270 MHz
Serial Receiver Equalization Range Proper operation with 800 mV launch
amplitude and up to 15 dB loss at
135 MHz using coaxial cable with 1?
loss characteristics.
Error detection protocols supported EDH (RP-165), ØAPCRC
Nominally 150 m of Belden 8281 coaxial cable;
typically up to 200 m.
Ꭹ
f
Table 1--2: Signal Level Meter
Characteristic Information
Resolution 2 dB @ 135 MHz
Table 1--3: AUX Output
Characteristic Performance Requirements Supplemental Information
Output 5-bit output; monochrome signal
White Amplitude 700 mV ± 10% Terminated into 75 Ω
Sync Amplitude 300 mV ± 10% Terminated into 75 Ω
DC Offset ≤ 500 mV Terminated into 75 Ω
Quantization 22 mV
Impedance 75 Ω nominal
Return Loss ≥ 10 dB to 10 MHz
Table 1--4: Power Supply
Characteristic Performance Requirements Supplemental Information
DC Input Range 9to15Vdc ≥12 V required to charge optional battery pack
Supply Accuracy +5 V ±250 mV
Hum Typical: 25 mV
Noise ≤ 50 mV
Fuse 2 A slow blow, 32 V min
1--2 SDA 601 Serial Digital Analyzer
Table 1--4: Power Supply (Cont.)
Power Limit
without adapter
with adapter
Power Consumption
Back light off
Back light on
Table 1--5: Physical Characteristics
Characteristic Information
Height 5.6 cm (2.2 in)
Width 9.1 cm (3.6 in)
Depth 19.1 cm (7.5 in)
Net Weight
SDA 601
SDA 601 with battery pack
Shipping Weight (with AC adapter) 1.50 kg (3.31 lb)
0.48 kg (1.06 lb)
0.68 kg (1.5 lb)
Specifications
Supplemental InformationPerformance RequirementsCharacteristic
6W
7W
Typical:
5.0 W
5.5 W
Table 1--6: Environmental Characteristics
Characteristic Information
Temperature
Operating
Storage
Altitude
Operating
Storage
Equipment Type Tes t
Equipment Class Class III (as defined in IEC 1010-1, Annex H)
Installation Category Category II (as defined in IEC 1010-1, Annex J)
Pollution Degree Pollution Degree 2 (as defined in IEC 1010-1)
Transportation Meets the requirements of NTSB Test Procedure 1A, category II (24 inch drop)
0° Cto+35° C (32° Fto+95° F)
-- 3 0 ° Cto+65° C(--22° F to +149° F)
to 15,000 feet (4572 m); IEC 1010-1 compliance to 2000 m
to 50,000 feet (15420 m)
Note: Rated for indoor use only.
SDA 601 Serial Digital Analyzer
1--3
Specifications
Certifications and Compliances
EC Declaration of
Conformity -- EMC
Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility.
Compliance was demonstrated to the following specifications as listed in the
Official Journal of the European Communities:
EN 55103. Product family standard for audio, video, audio-visual and entertainment lighting control apparatus for professional use.
H Environment E2 — commercial and light industrial
H Part 1 Emission
H EN 55022. Class B radiated and conducted emissions
H EN 55103--1 Annex A. Radiated magnetic field emissions
H EN 55103--1 Annex B. Inrush current
H Part 2 Immunity
H IEC 61000--4--2. Electrostatic discharge immunity
H IEC 61000--4--3. RF electromagnetic field immunity
H IEC 61000--4--4. Electrical fast transient / burst immunity
Australia / New Zealand
Declaration of Conformity
-- E M C
EMC Compliance
H IEC 61000--4--5. Power line surge immunity
H IEC 61000--4--6. Conducted RF Immunity
H IEC 61000--4--11. Voltage dips and interruptions immunity
H EN 55103--2 Annex A. Radiated magnetic field immunity
EN 61000--3--2. AC power line harmonic emissions
Complies with EMC provision of Radiocommunications Act per these standard(s):
H AS/NZS 2064.1/2. Industrial, Scientific, and Medical Equipment: 1992
Meets the intent of Directive 89/336/EEC for Electromagnetic Compatibility
when it is used with the product(s) stated in the specifications table. Refer to the
EMC specification published for the stated products. May not meet the intent of
the directive if used with other products.
1--4
SDA 601 Serial Digital Analyzer
Operating Information
Operating Information
This section duplicates material contained in the SDA601 user manual
(Tektronix p/n 070-8910-XX). The material is included here for your convenience. Please check the user manual whenever you need more information on
any topic.
Getting Started
Please note the following statements before using your SDA601.
CAUTION. Attempting to operate the SDA601 with an improper AC-to-DC adapter can result in damage to the instrument. To avoid damage, USE ONLY AN APPROPRIATE DC POWER SOURCE: Voltage must be 9 to 15 VDC; the
connector must have the NEGATIVE contact in the center; and open-circuit voltage of the power source must not exceed 18 VDC.
For best results, use the AC adapter that is supplied with the instrument. If the
supplied adapter is incorrect for the local AC power supply, contact your nearest
T ektronix representative.
Supplying Power
WARNING. Install or replace batteries only with the instrument switched OFF
and the AC adapter disconnected.
Replace the batteries only with standard AA batteries (1.2--1.5 V, nominal), or
with a Tektronix rechargeable battery pack (p/n 119-4488-00).
If you have any questions regarding the operation of this instrument, please
contact your nearest Tektronix representative or field office. In the United States
and Canada, you may also call the Tektronix information number, 1-800-TEKWIDE (1-800-835-9433), extension TV, between 8:00 am and 5:00 pm Pacific
time.
The SDA601 is DC powered. You may power it with the standard AC adapter,
the optional 9.6 V NiCad battery pack, eight standard AA batteries, or a “BP”
type external battery pack with the correct voltage and polarity. The external DC
power connector is on the left side of the instrument.
SDA 601 Serial Digital Analyzer 2- 1
Operating Information
To install AA batteries or the battery pack, open the battery compartment of the
SDA601 by pressing down on the cover and sliding it in the direction of the
inscribed arrow, as shown in Figure 2--1. When the cover tabs line up with the
slots in the case, lift the cover away from the instrument. Install batteries in
alternating directions as indicated by the graphic molded into the “floor” of the
battery compartment. If using the optional battery pack, take the time to identify
both contacts and install the pack properly.
Figure 2- 1: Opening the Battery Compartment
When selecting a power source for your SDA601, please remember:
H Attempting to use an improper AC adapter can cause permanent damage to
the instrument. USE AN APPROPRIATE DC POWER SOURCE ONLY:
Voltage must be between 9 and 15 VDC; the center contact of the connector
must be NEGATIVE polarity; and open-circuit voltage must not exceed 18
VDC. For best results, use the adapter supplied with the instrument.
NOTE. Batteries must be installed to ensure uninterrupted operation when using
the wall adapter.
H There is no need to remove the optional NiCad battery pack for recharging.
The SDA601 will “trickle charge” the battery pack whenever the standard
AC adapter is attached and the instrument is switched off. It can take up to
16 hours to fully charge the battery pack. Note that charging w ill occur only
if the adapter supplies at least 12V; make sure that the adapter you use is
appropriate for the local AC supply.
H AA batteries are not included with the instrument; buy them locally.
Rechargeable AA batteries may be used, but they are NOT recharged
automatically. To recharge AA batteries, remove them from the instrument
and use an appropriate charger. For safety, read and follow the battery
charger instructions. Do NOT attempt to recharge standard alkaline batteries.
2- 2 SDA 601 Serial Digital Analyzer
Operating Information
H After three minutes with no key press, the LCD back light will be dimmed to
save battery charge. (This may be disabled through the Utility/Diagnostics/
Power Manage menu; see page 2--12.)
H To guard against battery discharge if you forget to turn the SDA601 off,
enable Auto Power Off through the Utility/Diagnostics/Power Manage menu
(see page 2--11).
H The SDA601 can sense low battery voltage. It will warn you when the
charge is sufficient for approximately ten more minutes of operation. The
instrument will shut itself down when the battery voltage becomes too low
for reliable operation
The ON key toggles instrument power On and Off.
NOTE. If the instrument is operating with low batteries, it may turn itself off and
on. The batteries should be replaced or recharged depending on battery types.
Connecting the SDA601
Figure 2- 2: Connect ing the SDA601
Connect the instrument as shown in Figure 2--2. The OPTION connector is
reserved for later versions of the instrument. Note that the SDA601 has many
capabilities and features, and you may wish to gain familiarity with it by first
connecting it directly to a serial digital, component video signal generator such
as the Tektronix TSG601, an analog video monitor, and—if convenient—a
compact printer, such as the Seiko DPU 411 printer (Tektronix part number
119-4594-00), available from Tektronix distributors and through TekDirect.
SDA 601 Serial Digital Analyzer 2- 3
Operating Information
SERIAL INPUT
AUX Output
Connect the instrument to your system through the SERIAL INPUT with 75Ω
coaxial cable.
NOTE. The SDA601 has internal, active termination. Any signal path that ends
with the instrument will be properly terminated only when the SDA601 is
switched on.
The AUX output signal may be thought of as “pseudo video.” It is derived from
the serial video input signal and converted to composite monochrome analog
video by an unfiltered 5-bit DAC. It is suitable for identifying the input and
displaying the cursor cross hairs, Highlighting, and the “OSD.” It:
H Lets you view the picture for convenient source identification.
H Can contain the On-screen Display (OSD; see page 2--9), which shows the
most recent Watch or Analyze results one page at a time—instead of one
item at a time as on the SDA601 display.
H With Pulse Cross enabled (see page 2--24), lets you “see” the contents of the
vertical and horizontal interval portions of the serial video signal.
RS-232 Interface
H Can include Cursor cross hairs for convenient positioning of the Cursors (see
page 2--22).
H When Highlighting (see page 2--24) is turned on, can help you locate and
identify errors in the picture, or the digital encoding of the signal.
By factory default, the AUX output is the Y (luminance) video component; you
may configure it, through the I/O menu, to be the R–Y or B–Y component
instead. (To access this setting, press
Connect an ASCII, serial printer to the RS-232 connector to create “hard copy”
analysis reports, or to log errors detected during a Watch session. You may also
capture the RS-232 output on a personal computer running a communications
application such as PROCOMMR or the Terminal accessory of MicrosoftR
WindowsT. With a printer or PC connected, you can choose—through the Alarm
menu—to have the SDA601 log every error as it occurs, or to print a Watch
report every ten seconds. This will permit unattended monitoring of your system.
See page 2--19 for more information.
Connecting to the RS-232 Port. The SDA601 is an RS-232 DCE device. Table
2--1 lists the pin assignments of the connector. The connector pinout has been
chosen to interface directly with an IBM PC/AT 9-pin serial port using a
straight-through cable. Thus, when communicating with a DTE device that has a
male 9-pin (DB9) connector, use a cable that connects pins 2, 3, 5, 7, and 8
Shift, then Insert On/Off, then Y.)
2- 4 SDA 601 Serial Digital Analyzer
Operating Information
straight-through—a simple ribbon cable may be adequate. Use a null modem
cable (which swaps the lines between pins 2 and 3 and pins 7 and 8) to communicate with another DCE device. Figures 2--3 and 2--4 illustrate cable wiring for
communicating with a device that has a 25-pin serial connector.
Because of space limitations on the connector end of the SDA601, you may
have to insert a 9-pin adapter between the cable and the connector. If the cable
has a female end, use a male/male adapter such as ITT Cannon p/n 111805--1.
Table 2- 1: RS-232 Connector Pin Assignments
764 DB9 Pin Signal Name Signal Direction
1 Not connected —
2 RXD (Received Data) From SDA601
3 TXD (Transmitted Data) To SDA601
4 Not connected —
5 Signal Ground —
6 Not connected —
7 RTS (Request to Send) To SDA601
8 CTS (Clear to Send) From SDA601
9 Not connected —
NOTE. RS-232 signals are named from the perspective of the DTE device. Since
the SDA601 is a DCE device, pin 2 (“Received Data”) is an output from the
instrument; that is, the data is received by the connected DTE device.
Figure 2- 3: Connect ing to a DTE Device with a DB25 Serial Port
SDA 601 Serial Digital Analyzer 2- 5
Operating Information
Figure 2- 4: Connect ing to a DCE Device with a DB25 Serial Port
NOTE. Most Personal Computers are DTE devices; however, printers may be
either DTE or DCE, and the type may not be obvious from the printer documentation or the gender of the RS-232 connector. If you have trouble outputting from
the SDA601, first verify that communication parameter and Baud rate settings
are correct, then try reversing the conductors at pins 2 and 3 and 7and 8 at the
cable end that is connected to the SDA.
RS-232/Printer Setups. Set the receiving device to 8 data bits, and one stop bit, if
possible.
The SDA601 supports both hardware (RTS/CTS) and software (Xon/Xoff)
handshaking; choose the appropriate handshaking protocol through the Utility/
Printer Setup submenu. Specify 60 lines per page (also in the Utility/Printer
Setup submenu) for most printers that use 8.5 x 11.0 inch paper.
Set the Baud rate and Parity—through the Utility/RS-232 Setup submenu—to
match the printer. When in doubt, set Parity to None.
Testing the Connection and Settings. To test your printer connection and settings,
perform a signal analysis by pressing
Analyze. Then, press Shift-Analyze.The
printer should respond by printing an analysis report that resembles the one
shown in Figure 2--5.
2- 6 SDA 601 Serial Digital Analyzer
Operating Information
Figure 2- 5: A Printed Analysis Report
SDA 601 Serial Digital Analyzer 2- 7
Operating Information
Keypad and Display Conventions
Please see the Instruction card (Tektronix part number 070-8912-00) supplied
with your SDA601 for a “tour” of the keypad and an explanation of the display
symbols. For your convenience, the following panels are taken from the card.
Additional key functions are:
SLM (A) — Invokes the SLM display mode. Press this key to su-
percede any other display mode and display the Signal Level Meter on the SDA601 LCD. See page 2--21.
Cursor (B) — Invokes the Cursor data display mode. Press this
key to supercede any other display mode and display the cursor
position (line and sample) on the SDA601 LCD. See page 2--21.
Pulse Cross (E) — Press repeatedly to cycle through the four AUX
output pulse cross modes: Normal, H (horizontal), V (vertical),
and Both (horizontal and vertical). See page 2--24.
2- 8 SDA 601 Serial Digital Analyzer
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