Tektronix DF2 User manual

T E KTRO NI X
DF2
DISPLAY FORMATTER
INSTRUCTION MANUAL
Tektronix, Inc.
P.O. Box 500
Beaverton, Oregon
070-2478-00
97077
Serial Num er
First Printing JAN 1978

DF2
Contents
Page
LIST OF ILLUSTRATIONS ................................................. ii
LIST OF TABLES ....................................................................... iii
SAFETY INFORMATION ....................................................... i
SECTION 1 GENERAL INFORMATION
Introduction ................................................. 1-1
Glossary of Terms ....................................... 1-1
Installation .................................................... 1-2
Packaging for Shipment ............................. 1-2
Specifications ............................................... 1-4
Standard Accessories .................................. 1-6
SECTION 2 OPERATING INSTRUCTIONS
Front Panel Controls .................................. 2-1
Internal .................................................... 2-1
External ................................................. 2-1
Basic Operating Instructions ..................... 2-4
Power-On-Mode .................................... 2-4
Display Modes ....................................... 2-4
Timing Diagram Displays ................ 2-4
Map Displays .................................... 2-4
State Table Displays .......................... 2-4
Menu Displays .................................. 2-8
Size and Position Adjustment . . . 2-8
Error Message Displays ..................... 2-8
Basic Functional Check ............................ 2-9
Setup Procedure .................................... 2-9
Timing Diagram Displays ..................... 2-9
Map Displays ......................................... 2-9
State Table Displays ............................. 2-10
Front Panel Adjustments ................... 2-11
Irregular Operating Symptoms ................ 2-12
SECTION 3 DETAILED OPERATING INSTRUCTIONS
FOR GPIB
GPIB O er iew ............................................ 3-1
General ................................................... 3-1
Mechanical Elements ............................ 3-1
Electrical Elements ............................... 3-1
Functional Elements ............................ 3-2
GPIB Line Definitions ..................... 3-2
ATN (Attention) Messages .......... 3-4
Interface Functions .......................... 3-4
Setup Procedure for GPIB Operation. . . 3-5
Full Display/First Trigger Selector
of 7D01 Logic Analyzer ..................... 3-5
GPIB Adapter ......................................... 3-5
Installation of GPIB Adapter . . . . 3-8
7D01 Front Panel ................................. 3-8
GPIB Acquisition and Display .................. 3-8
General ................................................... 3-8
Menu Display ......................................... 3-8
Page
SECTION 3 DETAILED OPERATING INSTRUCTIONS
FOR GPIB (cont.)
GPIB Display ...................................... 3-8
GPIB Crt Display ............................ 3-10
Control Lines (Channels 4-7). .3-10
Data Bus Lines (Channels 8-15)3-10
De ice Dependent Messages. . .3-13
User Definable Lines
(Channels 0-3) .......................... 3-13
Secondary Functions of Display
Push Buttons ............................... 3-15
GPIB Triggering ....................................... 3-15
General Description and Features. . .3-15
ATN (Attention) Message Triggering .3-16
Triggering on Any ATN Message. .3-16
Triggering on Any ATN Message
Group ............................................ 3-16
Triggering on A Specific ATN
Message ......................................... 3-18
NON-ATN Message Triggering ........... 3-20
Triggering on Any NON-ATN
Message ......................................... 3-20
Triggering on A Specific NON-ATN
Message ......................................... 3-20
Control Line Triggering ..................... 3-20
GPIB Timing ............................................ 3-21
Correct Handshake ............................. 3-21
Asynchronous Triggering .................. 3-21
Time Measurements ............................. 3-23
Error Message Display ............................. 3-27
Requires 16 Channel Mode ................ 3-27
Irregular Operating Symptoms for GPIB 3-28
GPIB Applications .................................... 3-29
Procedure ............................................ 3-29
Possible Causes .................................... 3-29
GPIB Functional Check .......................... 3-30
SECTION 4 DETAILED OPERATING INSTRUCTIONS
FOR ASCII
ASCI I Acquisition and Display ................... 4-1
General ................................................... 4-1
Menu Display ......................................... 4-1
ASCII Display ......................................... 4-1
ASCII Crt Display ............................ 4-1
Secondary Functions of Display
Push Buttons .................................4-6
ASCII Triggering ......................................... 4-8
8 Channel ASCII Triggering .................. 4-8
16 Channel ASCII Triggering ............... 4-8
Trigger Word .................................... 4-9
Negati e Logic ASCII Triggering. . . .4-10
Error Message Display ............................. 4-10
Requires 8 or 16 Channel Mode . . . .4-10
Irregular Operating Symptoms
for ASCII ................................................. 4-11
ASCII Functional Check .......................... 4-12
i

DF2
WARNING I
THE REMAINING PORTION OF THISTABLE OF CONTENTS
LISTS THE SERVICING INSTRUCTIONS. THESE SERVICING
INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL
ONLY. TO AVOID ELECTRICAL SHOCK, DO NOT PERFORM
ANY SERVICING OTHER THAN THAT CALLED OUT IN THE
OPERATING INSTRUCTIONS UNLESS QUALIFIED TO DO SO.
Page
SECTION 5 THEORY OF OPERATION
Front Panel ................................................. 5-1
Data Acquisition ......................................... 5-1
MPU, Program, and Data Storage .......... 5-2
Vert and Horiz Display Output ................ 5-2
Character Memory and Generator .......... 5-3
Display Control and Z-Axis ....................... 5-3
Display ......................................................... 5-4
ROM Extension ......................................... 5-4
SECTION 6 MAINTENANCE
Pre enti e Maintenance ............................ 6-1
Cleaning ................................................. 6-1
Visual Inspection .................................... 6-1
Semiconductor Checks .......................... 6-1
Troubleshooting ......................................... 6-2
Troubleshooting Aids ............................ 6-2
Troubleshooting Equipment ................ 6-2
Troubleshooting Techniques ............... 6-3
Troubleshooting With the System
Text Fixture .................................... 6-4
Correcti e Maintenance .......................... 6-14
Obtaining Replacement Parts ............. 6-14
Soldering Techniques .......................... 6-14
Component Remo al and
Replacement .................................... .6-15
Circuit Boards .................................. 6-15
Push Button Switches ..................... 6-18
Semiconductors ............................. 6-19
Interconnecting Pins ..................... 6-19
Adjustment After Repair ........................ 6-20
SECTION 7 PERFORMANCE CHECK AND
ADJUSTMENT
Preliminary Information ............................ 7-1
Adjustment Inter al ............................... 7-1
Tektronix Field Ser ice ....................... 7-1
Performance Check ............................... 7-1
Adjustment Procedure .......................... 7-1
Partial Procedure .................................... 7-1
Test Equipment Required ..................... 7-2
Index to Performance Check and
Adjustment ......................................... 7-3
Preliminary Procedure .......................... 7-3
Performance Check Procedure ..... 7-4
Adjustment Procedure .......................... 7-8
SECTION 8 INSTRUMENT OPTIONS
Page
SECTION 9 REPLACEABLE ELECTRICAL PARTS
SECTION 10 DIAGRAMS AND CIRCUIT BOARD
ILLUSTRATIONS
SECTION 11 REPLACEABLE MECHANICAL PARTS
CHANGE INFORMATION
List of Illustrations
Figure
No. Page
Frontis 
piece DF2 Features ..................................................
1-1 Attaching the DF to the 7D01 ................... 1-3
1- 2 DF Dimensional Drawing ........................... 1-5
2- 1 Location of the Readout Source
Multi-pin Jumper ....................................... 2-1
2- 2 Front Panel Controls, Connectors,
and Indicators ............................................ 2-2
2- 2 (cont) Front Panel Controls, Connectors,
and Indicators ............................................ 2-3
2-3 Typical DF Display Modes ........................ 2-5
2-4 Typical Map Display Usage ........................ 2-6
2- 5 Typical State-Table Display Showing
Offset Between 7D01 and Reference
State Tables .............................................. 2-7
3- 1 GPIB Connector .......................................... 3-2
3- 2 General Purpose Interface Bus Structure 3-3
3- 3 Location of 7D01 Full Display/First
Trigger Selector ......................................... 3-6
3-4 GPIB Adapter ............................................... 3-7
3-5 GPIB Operational Mode Display ................ 3-9
3- 6 Changing Trigger Word Readout in
GPIB Operation ....................................... 3-10
3-7 Typical DF GPIB Display Showing Dis 
assembled Instructions in IEEE
Standard 488-1975 Message Mnemonics.3-1 1
3-8 Hex and Binary to Mnemonic Message
Con ersion Table ................................... 3-12
3-9 Hex and Binary to ASCII
Con ersion Table ................................... 3-14
3-10 GPIB Handshake Timing Diagram .......... 3-22
3-11 GPIB Handshake and ATN With
Associated State Diagrams .................... 3-24
3- 11 (cont) GPIB Handshake and ATN With
Associated State Diagrams .................... 3-25
4- 1 ASCII Operational Mode Display ........... 4-2
4- 2 ASCII State Table Displays of Hex,
Octal, and Binary Values .......................... 4-3
4- 3 Changing Display Mode in ASCII
Operation ................................................. 4-4
4- 4 Hex and Binary to ASCII Con ersion . . 4-5
4-5 Octal to ASCII Con ersion ........................ 4-6
6-1 Test Equipment Setup for Trouble 
shooting the DF Display Formatter . . . 6-5
ii

Figure
No. Page
6-2 Partial View of ROM Extension Board.
Shows Pin Location and Indexing
for Connection to the Interface
Test Fixture .............................................. 6-5
6-3 Location of Readout Source Multi 
pin Jumper ................................................. 6-9
6-4 Circuit Board Locations ........................... 6-16
6-5 Locations of Securing Screws on
the Front Sub-Panel ............................... 6-17
6-6 Locations of Securing Screws on A2
Button Lights Circuit Board .................. 6-17
6-7 Locations of Hex Securing Spacers and
Wiring to be Disconnected on A1
Formatter Keyboard Circuit Board . . .6-18
6-8 Locations of Securing Screws on A3
Intelligence Circuit Board and A5
ROM Extender Circuit Board ................ 6-18
6-9 Locations of Securing Screws and
Hardware Mounting Screws on A4
Acquisition Circuit Board .................... 6-19
6- 10 Exploded View of Circuit Board Pin
and Ferrule ............................................... 6-20
7- 1 Location of 7D01 Full Display/First
T rigger Jumper ......................................... 7-4
7-2 Test Setup for Performance Check and
Adjustment Procedure ............................ 7-5
7-3 Hexadecimal State Table Display .............. 7-6
7-4 Reset Out Check Test Setup ...................... 7-7
The illustrations in Section 10 are located near their
associated diagrams on the foldout pages.
10-1 Semiconductor lead configurations.
10-2 Circuit board locations.
10-3 A1 — Formatter Keyboard circuit board
locations as iewed from front of
instrument
10-4 A2 - Button Lights circuit board component
locations as iewed from the component
side of the board.
10-5 A4 — Acquisition circuit board component
locations.
10-6 A3 — Intelligence circuit board component
locations.
10-7 Partial A4-Acquisition circuit board.
Component locations as iewed from
component side of the board.
Figure
No. Page
10-8 A4 — Acquisition circuit board component
locations.
10-9 A3- Intelligence circuit board component
locations.
10-11 Partial A3 -Intelligence circuit board.
Component locations as iewed from the
component side of the board.
10-12 Partial A4 — Acquisition circuit board.
Component locations as iewed with board
installed.
10-13 Partial A3 — Intelligence circuit board
component locations.
10-14 A2 — Button Lights circuit board component
locations, as iewed from component side
of the board.
List of Ta l E s
Ta le
No. Page
1-1 Electrical Characteristics .............................. 1-4
1-2 En ironmental Characteristics ................... 1-5
1- 3 Physical Characteristics ................................ 1-5
2- 1 Irregular Operating Symptoms ................. 2-12
2-1 (cont) Irregular Operating Symptoms ................. 2-13
2- 1 (cont) Irregular Operating Symptoms ................. 2-14
3- 1 Minimum Clock Pulses Required to
Display Data ................................................ 3-5
3- 2 Irregular Operating Symptoms for GPIB 3-28
4- 1 Secondary Functions of Display
Push Buttons ........................................... 4-7
4- 2 Irregular Operating Symptoms for
ASCII ...................................................... 4-11
5- 1 Data Acquisition Address Decoder .... 5-1
5- 2 Extended ROM Decoder ............................. 5-4
6- 1 Error Messages and Responses ................... 6-2
6-2 Hex to Binary Con ersion .......................... 6-6
6-3 ROM Hexadecimal OutputProgram . . . 6-7
6-4 Keyboard Circuit Checkout Procedure. . 6-7
6-5 Manual Clock Pulses Required to Control
Button Lights ........................................... 6-8
6-6 Formatter Readout Truth Table .............. 6-10
6- 7 Mainframe Readout Truth Table ........... 6-10
7- 1 Performance Check Description ................ 7-1
7-2 Test Equipment ......................................... 7-3

DF2
SAFETY INFORMATION
GENERAL
The following general safety information applies to all
operator and ser ice personnel. Specific warnings will be
found throughout the manual where they apply and
should be followed in each instance.
WARNING statements identify conditions or practices
which could result in personal injury or loss of life.
CAUTION statements identify conditions or practices
which could result in damage to the equipment or other
property.
The word DANGER on the equipment identifies areas
of immediate hazard which could result in personal injury
or loss of life.
NOTES identify a procedure, condition, statement,
etc., which may be essential for better understanding.
The following safety symbols may appear on the
equipment.
GROUNDING
To a oid electric shock, plug in the power cord with its
grounding (earth) conductor before connecting to the
instrument input or output terminals.
Do not defeat the grounding connections.
USE THE PROPER POWER CORD
To a oid electric shock and fire hazard, use only the
power cord and connector specified for your instrument.
Use only a power cord in good condition.
For detailed information on power connectors, see
appropriate (operators, ser icing) instructions.
USE THE PROPER FUSE
To a oid electric shock and fire hazard, use only fuses
specified in parts list for your instrument, and identical in
the following respects:
A. Type: Slow blow, fast blow, etc.
B. Voltage rating: 250 V, etc.
C. Current rating
Fuse replacement procedures, that require qualified
ser ice personnel to perform, are described in the Ser ice
portion of the appropriate manual.
Disconnect the power input before replacing the fuse.
DO NOT OPERATE IN EXPLOSIVE
ATMOSPHERE
To a oid explosion, do not operate this instrument in an
explosi e atmosphere unless it has been certified for such
operation.
DO NOT REMOVE COVERS OR PANELS
To a oid personal injury, do notoperate the instrument
without co ers or panels installed. Do not perform any
ser icing other than that contained in operating instruc 
tions unless you are qualified to do so.
DO NOT SERVICE ALONE
Do not attempt internal ser ice or adjustment unless
another person capable of rendering first aid and
resuscitation is present.
i
CAUTION — Refer to manual
DANGER — High oltage
Protecti e ground (earth) terminal
Chassis ground

DF2 Instruction
DF2 FEATURES
The DF Display Formatter pro ides data-domain display modes in addition to the existing time-domain display of the 7D01 Logic Analyzer.
It adds state table displays with a comparison mode, a map display and other operational modes as assigned to the Menu List. The DF attaches
to the left side of the 7D01, forming a three-wide plug-in assembly. This assembly operates in a 7000-series oscilloscope mainframe to comprise
a complete 16-channel logic timing-state analyzer system.
A microprocessor controlled memory system, contained in the DF, is capable of recording two 7D01 information records. Portions of both
information records may be displayed concurrently in a state table presentation.
State tables are displayed in terms of either hexadecimal, octal, or binary formats. This data may be displayed in up to two tables of 17 lines of
16-bit words each. The left-hand table displays data currently stored in the 7D01 memory (7D01 display). The right-hand table displays data
that has been transferred from pre ious 7D01 displays to the DF memory (reference display). The DF compares the 2 tables and resets the
7D01 when the 7D01 data equals the reference data.
The map function plots a dot display of the 16 data channels in X-Y coordinate points. Each dot location represents one possible combination
of up to 16 inputs to the 7D01.
V

Section 1 — DF2
GENERAL INFORMATION
INTRODUCTION
The Instruction Manual contains ele en sections. Operating
information is co ered in the first four sections; ser icing
information is co ered in the remaining se en sections.
Schematic diagrams are located at the rear of the manual
and can be unfolded for reference while reading other parts
of the manual. The reference designators and symbols used
on the schematic diagrams are defined on the first page of
the Diagrams and Circuit Board Illustrations section.
Abbre iations used in the manuals, except in the parts list
and schematic diagrams, comply with the American
National Standards Institute Y1. 1-1972 publication. The
parts list is a computer printout and uses computer-supplied
abbre iations.
Throughout this manual the DF2 Display Formatter will
be referred to as the "DF."
GLOSSARY OF TERMS
The following logic terms are used throughout this manual.
Asynchronous Mode — The data is acquired by the 7D01
using its internal clock at a rate selected by its sample
inter al control.
Bit — The smallest increment of digital information.
Blanked Columns — The columns eliminated from the
memory by the COLUMN BLANK function.
Compare — A check between the 7D01 memory and the
reference memory for equality (a microprocessor function.)
Data This is information acquired by the 7D01. Up to 16
channels of data may be acquired, and each data bit is one
clock period in the synchronous mode.
Data Record — All of the information stored in the 7D01
memory or the DF memory. (A Data Record has 4096
bits of information.)
Data Word — This is Good Data that may be formatted in
any of three different ways:
1. A ertical slice of the Timing Diagram display.
2. A coordinate point of the Map display.
3. A horizontal line of characters in a State Table
display.
NOTE
Channel 0 is the top-most channel displayed in
TIMING DIAGRAM format and is always
considered the least significant bit.
Don't Care Data — In alid Data that is excluded from
comparison in all comparison modes.
End Data — Data that fills out the last portion of a table
when alid data ends before completion of the table. This
is indicated by an in the display.
Good Data-AII data which is not In alid Data.
Indeterminate Data — This is alid data but is considered
in alid because its location cannot be defined. This data is
indicated by an "X" in the display and occurs during sweep
retrace in Timing Diagram. The number of Indeterminate
Data bits for each position of the 7D01 bits/channel switch
are: Two bits (254 bits/channel position), four bits (508
bits/channel position), and eight bits (1016 bits/channel
position).
Invalid Data — This term describes a combination of Indeter 
minate Data, Old Data (if any), and End Data.
New Data — The most recent acquisition of Good Data into
the 7D01.
Old Data — Data which was part of a pre ious Data Record
in the 7D01 memory but is out of sequence. This is caused
by the arri al of the trigger before the New Data has
completely filled the memory. Old Data is indicated by an
“ X" in the display.
Reference State Ta le — A display of DF memory data
transferred from a pre ious 7D01 display and displayed on
the right half of the crt.
Synchronous Mode -The data is acquired by the 7D01
using an externally supplied clock signal (7D01 sample
inter al switch set to external, and with the external clock
signal connected to the clock input of the channel 0-7
Data Acquisition Probe).
TABLE — This term refers only to the 17 lines of data dis 
played on the left or right sides of the crt an any one time.
"TABLES-" refers to only the displayed data contained
in the two tables and should not be confused with the
total memory capacity.
Word--See Data Word.
1-1

General Information — DF2
INSTALLATION
The DF Display Formatter attaches to the left side of the
7D01 Logic Analyzer to make a three-wide plug-in system.
The two units latch together to pro ide a rigid instrument
that plugs into a 7000-series mainframe. Refer to Figure 1-1
to attach the DF to the 7D01 .
PACKAGING FOR SHIPMENT
If this instrument is to be shipped for long distances by
commercial transportation, it is recommended that the
instrument be packaged in the original manner for maxi 
mum protection. The carton and packaging material in
which your instrument was shipped should be sa ed and
used for this purpose.
To pre ent instrument damage, plug-in units
should not be installed or remo ed without first
turning off the mainframe power.
To install the DF/7D01, first turn off the power to the
oscilloscope mainframe. Then, gently push the 2 plug-in
units into the appropriate plug-in compartments until they
fit firmly. The front panels of the DF/7D01 should be
flush with the front panel of the oscilloscope mainframe.
NOTE
When installed in a four-compartment main 
frame, the DF/7D01 occupies the left ertical,
right ertical, and A horizontal compartments
only. The oscilloscope mainframe ertical mode
switch must be set to right and the horizontal
mode switch must be set to A.
To remo e the DF/7D01, pull the release latch (located
on the lower left corner of the 7D01) to disengage the
DF/7D01 from the mainframe. Then, gently slide the
plug-in units from the mainframe.
Also, if this instrument is to be shipped to a Tektronix
Ser ice Center for ser ice or repair, attach a tag to the
instrument showing the following: Owner of the instrument
(with address), the name of an indi idual at your firm that
can be contacted, complete instrument type and serial
number, and a description of the ser ice required.
If the original packaging is unfit for use or not a ailable,
package the instrument as follows:
1. Obtain a carton of corrugated cardboard with at least a
200-pound test strength and at least 6 inches larger than the
instrument dimensions to allow for cushioning.
2. Surround the instrument with polyethylene sheeting to
protect the instrument.
3. Allow a 3-inch cushion on all sides by tigh ly packing
dunnage or urethane foam between the carton and the
instrument.
4. Seal the carton with shipping tape or with an industrial
stapler.
5. Mark the address of the Tektronix Ser ice Center and
your return address on the carton in one or more locations.
1-2
CAUTION

General Information — DF2
DF/7D01 INSTALLATION
Slide the mo able latch on the top of the DF
forward until it stops.
Tilt the DF and 7D01 slightly and place the bottom
two latches on the DF into the bottom two slots on
the 7D01. Gently slide the DF forward to just
engage the bottom latches with the bottom track on
the7D01.
Continue to slide the DF forward until the jack at
the top rear of the DF lines up with its mating plug
on the 7D01 .
Gently press the units together until the connector
is properly mated and the mo able latch is inserted
into the rail slot on the 7D01.
Make sure the mo able latch fits into the 7D01 rail
groo e and slide the mo able latch toward the rear
along the rail groo e until it stops. The DF and 7D01
should now be latched together to form a rigid
three-wide plug-in system.
(2150-10)2478-42
Figure 1-1. Attaching the DF to the 7D01.

General lnformation-DF2
SPECIFICATIONS
The electrical specifications listed in Table 1-1 apply for the DF/7D01 system under the following conditions: (1) the
instrument must ha e been adjusted at an ambient temperature between +20° and +30° C (+68° to +86° F ), (2) the instru 
ment must be operating in an ambient temperature between 0° and +40° C (+32° and +104° F ), and (3) the instrument
must ha e been operating for at least 20 minutes.
TABLE 1-1
Electrical Characteristics
Characteristic
Performance Requirement
External Read Clock
Frequency Range
100 kHz to 500 kHz.
Duty Cycle
50% within 5%.
Display
Vertical Size
Adjustable from 6.9 di or less to at least 8.1 di from the
top of the first line of DF readout to the bottom of the
last line of DF readout.
Vertical Position
Adjustable to ertical center of display area in any cali 
brated 7000-series mainframe.
Horizontal Position
Adjustable to horizontal center of display area in any
calibrated 7000-series mainframe.
Output Signals
Reset Logic Voltage Le el
LO: +0.4 V or less at 2 mA.
HI: at least +2.4 V at 2 mA.
Wa eshape
Positi e-going rectangular pulse.
Duration
100 µs within 50 µs when used with the 7D01 internal
read clock.
1-4

General lnformation~DF2
TABLE 1-2
Environmental Characteristics
Characteristic
Performance Requirement
Temperature
Calibration
+20° to +30° C (+68° to +86° F).
Operating
0° to +40° C (+32° to +104° F).
Storage
-55° to +75° C (-67° to +167° F).
Altitude
Operating
To 15,000 feet.
Storage
To 50,000 feet.
Transportation
Qualified under National Safe Transit Committee Test
Procedure 1A, Category II.
TABLE 1-3
Physical Characteristics
Characteristic Description
Net Weight Approximately 2 lbs (0.9 kg).
O erall Dimensions
See Figure 1-2, Dimensional Drawing.
Figure 1-2. DF dimensional drawing.
1-5

General lnformation — DF2
STANDARD ACCESSORIES
1 ea .................................................................................. GPIB Adapter
1 ea ................................................................................ Instruction Manual
Refer to the tabbed Accessories page in the back of this manual for standard accessory
part numbers.
1-6

Section 2 --DF2
OPERATING INSTRUCTIONS
To effecti ely use the DF Display Formatter, the capabilities of the DF and the companion 7D01 Logic Analyzer must be
known. This section briefly describes the operation of the controls and connectors, pro ides detailed operating instructions,
and a functional check procedure for the DF. The General Information section pro ides instructions for installation of the
DF and the 7D01 into a 7000-series oscilloscope mainframe. Refer to the 7D01 Operators or Instruction Manuals for
information on the 7D01 Logic Analyzer.
CONTROLS AND CONNECTORS
INTERNAL
EXTERNAL
The Readout Source jumper is located inside the DF.
When using the Timing Diagram display, readout can be
produced either by the DF readout system or by the read 
out system of the associated oscilloscope mainframe (refer
to Figure 2-1). We recommend using the DF readout
unless it is important to ha e the style of characters
produced by the mainframe readout system.
The major controls required for operation of the DF are
located on the front panel of the unit. Figure 2-2 pro ides a
brief description of the front-panel functions. More infor 
mation is gi en under Basic Operating Instructions.
P754 • • • •
P752
PLACE MULTI-PIN JUMPER ON P752
FOR READOUT FROM THE OSCILLO 
SCOPE MAINFRAME (MFR).
P 754
P752
PLACE MULTI-PIN JUMPER ON P754
FOR READOUT FROM THE DF1 DISPLAY
FORMATTER (FOR R).
2150-3
Figure 2-1. Location of the Readout Source multi-pin jumper.

Operating lnstructions — DF2
(2150-1 A)2478-18
Figure 2-2. Front-panel controls, connectors, and indicators.
2-2

Operating lnstructions — DF2
Timing Diagram Switch — Selects the timing diagram display from the 7D01 Logic Analyzer.
MAP (CURSOR SCAN Switchesl — Select iew of the 7D01 memory data in X-Y coordinate points on the oscillo 
scope mainframe crt. The DF automatically sequences the data locations at a FAST or SLOW rate, or data locations
are selected manually with the 7D01 Cursor control.
STATE TABLE Switches — Select tabular display of the cursor word, the 16 words following the cursor word, and
the trigger word. The tabular format can be displayed in HEX (hexadecimal), OCTAL, or BINARY base-number
systems.
7D01 ONLY Switch — Selects the state table from the 7D01 memory for display on the left-hand side of the crt.
(Exclusi e Or) INTENS REF Switch — Compares state table display from the 7D01 memory (left-hand column)
to a reference state table stored by the DF (right-hand colunn).
LOGIC Switches — Determine whether the state table displays are in positi e or negati e logic.
TABLE = Indicator — Lamp turns on when the 7D01 state table and the reference state table are equal.
COLUMN BLANK Switches — Pro ide column blanking for state table displays. The blanked columns are excluded
from the data base for all state table comparison and reset functions.
REF TABLE FOLLOWS 7D01 Switch — The cursor location (trigger-to-cursor difference) in the reference state table
(right-hand column) follows the cursor location in the 7D01 state table (left-hand column).
REF TABLE HELD Switch — Locks the cursor location in the reference state table which allows the cursor location
in the 7D01 reference state table to be mo ed independently.
REF TABLE FOLLOWS W/OFFSET Switch — Maintains the cursor location offset, between the 7D01 and reference
state tables, that was established in the REF TABLE HELD mode.
SEARCH Switch — The 7D01 memory is searched for a match of the cursor word (first word) in the reference state
table.
RESET IF 7D01 = REF Switch — The 7D01 memory is reset when the 7D01 memory equals the DF reference
memory.
RESET IF TABLES = Switch — The 7D01 memory is reset when the 7D01 state table display equals the reference
state table display.
STORE 7D01--*-REF Switch — Transfers the 7D01 memory into theDF reference memory.
INTENS CONTRAST Adjustment — Controls brightness of the intensified characters of the DF display.
HORIZ POSN Adjustment — Controls horizontal position of the DF display.
VERT SIZE Adjustment — Varies ertical size of the DF display.
VERT POSN Adjustment — Controls ertical position of the DF display.
RESET OUT Connector — Pin-jack connector pro ides a HIGH TTL le el output when the 7D01 memory is reset by
the DF.
Ground Connector -Pin-jack connector pro ides a ground return for the RESET OUT gate.
MENU Switch — Selects the Menu List display.
(2150-113)2478-43
Figure 2-2. Front-panel controls, connectors, and indicators (continued).

Operating Instructions — DF2
BASIC OPERATING INSTRUCTIONS
POWER-ON-MODE
When power is applied to the oscilloscope mainframe
(Power-On mode), the DF reference memory and the
memory which acquires data from the 7D01 are checked
for proper operation of the random access memory (RAM)
integrated circuits (refer to Error Message Displays in this
section). Then, the 7D01 is reset and the DF reference
memory and the 7D01 memory are cleared. The Display
Mode is automatically set to Timing Diagram, the LOGIC
is set to POS, and the cursor location (trigger-to-cursor
readout) is set to +0. All other DF push-button selections
are cancelled.
DISPLAY MODES
The DF displays digital data in 3 Display Modes: Timing
Diagram, Map, and State Table. Figure 2-3 shows the
controls required to acti ate typical DF displays.
Timing Diagram Displays
The front-panel TIMING DIAGRAM push button selects
the Timing Diagram display (4, 8, or 16 channels) from the
companion 7D01 Logic Analyzer (see Fig. 2-3). The cursor
function of the 7D01 pro ides an intensified zone on the
data display and a corresponding numerical readout display
shows the logic state for each displayed channel of data.
The position of the cursor, relati e to the trigger, is also
displayed on the crt readout. Refer to the 7D01 manual for
more information on the 7D01 Logic Analyzer.
The source of the display readout can be from the oscillo 
scope mainframe readout system (MFR) or the DF
(FOR R). (Refer to Internal Controls and Connectors, in
this section, for more information.) When the Timing
Diagram Display Mode is selected (Readout Source jumper
set to Formatter Readout) after either the HEX, OCTAL,
or BINARY State Table function has been displayed, the
cursor word readout is displayed in the same base-number
system as displayed pre iously in the State Table Display
Mode. Then, the cursor word readout changes between
binary and the base-number system in the pre iously
selected State Table Display Mode, with e ery other push
of the TIMING DIAGRAM push button. Howe er, if the
Readout Source jumper is set for mainframe readout
(MFR), cursor word readout is displayed only in the binary
system.
Map Displays
The Map function pro ides a iew of the 7D01 memory
displayed as x-y coordinate dots on the crt. The ertical
axis represents the most significant half of the data word
and the horizontal axis represents the least significant half
(see Figure 2-3).
The map display can be formatted from 4, 8, or 16
channels of input data. Therefore, 4- and 8-channel map
displays are plotted o er the entire crt display area in the
same manner as a 16-channel display. A 16-channel display
is capable of 64,000 coordinate points, an 8-channel display
is capable of 256 coordinate points, and a 4-channel display
is capable of 16 coordinate points.
A map cursor, indicated by a plus symbol (+), sequences
automatically through the data locations in the order in
which the data was loaded into memory. The cursor scans
at a FAST or SLOW rate, as determined by the CURSOR
SCAN push buttons. When either the FAST or SLOW push
button is held in, the cursor scan is stopped near a desired
location on the display and can be positioned to the exact
location with the 7D01 cursor position controls. Also,
when the MANUAL CURSOR SCAN push button is
pressed, the 7D01 cursor position controls are used to
manually position the cursor to the exact position desired.
The readout display shows the logic state of the cursor
word (bottom of crt), and the position of the cursor point,
relati e to the trigger point, is displayed at the top of the
crt.
The map display is particularly useful for a fast o erall
check of digital systems. First of all, the map display
pattern for a particular set of digital inputs must be known.
Then, if there is a change in any one of the input signals,
the map display pattern will change. A different map
display pattern indicates that the circuits are not operating
in the normal manner. Figure 2-4 illustrates a map display
pattern from 16 signal inputs and shows that the map
display pattern changes when input signals are remo ed.
State Table Displays
The State Table function enables the data, recorded in the
7D01, to be displayed in a tabular format. The cursor word,
the sixteen words which follow, and the trigger word are
2-4

Operating Instructions — DF2
Figure 2-3. Typical DF Display Modes.

Operating Instructions — DF2
displayed. If the trigger word is displayed in the first 17
words of the state table, it is indicated by a blinking
condition. The position of the cursor, relati e to the trigger,
is also displayed on the crt readout (see Figure 2-3).
Each time the 7D01 cursor position is changed or the 7D01
is reset, the display is updated. If the data ends before 17
Figure 2-4. Typical map display usage.
words are displayed, the remainder of the display is filled
with an asterisk (*) character. Any "old data" from the
7D01 memory is indicated by an "X" character.
Three push button switches select State Table displays in
HEX (hexidecimal, base 16), OCTAL (base 8), or BINARY
(base 2) codes. The digits are grouped in threes or fours
depending upon the setting of the 7D01 cursor byte switch.
The ten Display push buttons are functional in STATE
TABLE format only. When the HEX, OCTAL, or
BINARY push buttons are depressed the function of
all ten DISPLAY push buttons corresponds to the
functional name positioned abo e each button. When
the MENU push button is depressed the function
of each push button changes to the number positioned
to the left of each button. These numbers correspond
to the numbers in the MENU list display.
7D01 ONLY. The State Table display from the 7D01 is
displayed on the left side of the crt. The ® INTENS REF
displays are not functional in the 7D01 ONLY mode.
7D01 © INTENS REF. Two state tables are displayed
simultaneously on the crt. The state table from the 7D01 is
displayed on the left half of the crt and a reference state
table is displayed on the right half of the crt (see Figure
2-3). When the 7D01 ® INTENS REF is initially selected,
the STORE 7D01 — -*REF push button must be pressed to
load the reference memory. Any differences between the
7D01 and reference state tables are indicated by intensified
bits at the appropriate location in the 7D01 state table.
Any differences in the state tables due to old data, indeter 
minate data, end data, or blanked columns, is interpreted as
"don't care" conditions and are not intensified in the 7D01
state table (refer to the Glossary in the General Information
section). If there are no differences between state tables,
the TABLES= indicator is illuminated.
REF TABLE FOLLOWS 7D01. The FOLLOWS 7D01
mode is functional only when operating in the 7D01 ©
INTENS REF mode. The cursor location (trigger-to-cursor
readout) in the reference state table is aligned with the
cursor location of the 7D01 state table. As the 7D01
location is changed (by means of the 7D01 cursor position
or data position controls), the cursor location of the
reference state table follows.
REF TABLE HELD. The HELD mode is functional only
when operating in the 7D01 © INTENS REF mode. The
reference table cursor location remains at one setting,
allowing the cursor location in the 7D01 state table to be
mo ed independently (offset). Refer to Figure 2-5.
2-6

Operating Instructions — DF2
Figure 2-5. Typical state-table display showing offset between the 7D01 and reference state tables.
REF TABLE FOLLOWS WITH/OFFSET. The FOLLOWS
WITH/OFFSET mode is functional only when operating in
the 7D01 © INTENS REF mode. The difference in cursor
location (offset) between the 7D01 state table and the
reference state table, is maintained at the time the
FOLLOWS W/OFFSET push button is pressed (see
Figure 2-5), The offset between the 7D01 and reference
state tables remains constant as the 7D01 cursor is mo ed.
To delete the trigger-to-cursor offset, select REF TABLE
FOLLOWS 7D01.
SEARCH. The SEARCH mode is functional when
operating in the 7D01 © INTENS REF mode. When the
SEARCH push button is pressed, the 7D01 memory is
searched for a match of the reference cursor word. When a
match of the reference cursor word is found, the REF
TABLE mode is automatically set to HELD and the match 
ing word is mo ed to the 7D01 cursor word position (first
word) of the 7D01 state table.
If a match for the cursor word is not found in the 7D01
memory, the state table display remains unchanged. Also, if
the first word in the reference memory is not alid, or a
comparison is presently being made in the RESET IF
7D01 = REF mode, a search of the 7D01 memory is not made.
RESET IF TABLES=. This mode is functional only when
operating in the 7D01 O INTENS REF mode. When the
RESET IF TABLES= push button is pressed, the 7D01
resets and compares the data in the 7D01 state table to the
data in the reference state table. If there are no differences,
the 7D01 resets, acquires new data, and repeats the compar 
ison. The number of resets is displayed on the crt readout.
If there are differences, the acquisition, compare, and reset
cycle stops. The differences between state-table displays are
intensified in the 7D01 state table. To cancel the RESET
IF TABLES= function, a second push of the RESET IF
TABLES= push button is required.
RESET IF 7D01 = REF. This mode is functional when
operating in all DF display modes. When the RESET IF
7D01 = REF push button is pressed, the data in the 7D01
memory is compared to the data in the reference memory.
If there are no differences, the 7D01 resets, acquires new
data, and repeats the comparison. The number of resets is
displayed on the crt readout. If there are differences, the
acquisition, compare, and reset cycle stops. The cursor
word is mo ed to the first difference and the RESET IF
7D01 = REF function is canceled. The RESET IF 7D01 = REF
function may also be canceled with a second push of the
RESET IF 7D01 = REF push button.
STORE 7D01-*REF. This mode is functional in all DF
display modes (Timing Diagram, Map, and State Table).
When the STORE 7D01 — * REF push button is engaged, the
7D01 memory is transferred into the DF reference mem 
ory. When the trigger-to-cursor readout is the same in both
state table displays, the 7D01 state table is transferred into
the reference state table with no intensified bits. Howe er,
2-7