Tektronix 1740A, 1750A User Manual
User Manual
1740A/1750A Series
Waveform/Vector Monitor
070-8470-06
This document supports firmware version 2.2 and
above.
www.tektronix.com
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - FAX 781.665.0780 - TestEquipmentDepot.com
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.
To Avoid Fire or Personal Injury
Use Proper Power Cord
Use only the power c ord specified for this product and
certified for the country of use.
Connect and Disconnect Properly
Do not connect or disconnect probes or test l eads 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 elec tric shock, the grounding
conductor must be connected to earth ground. Before making
connections to the input or output termina ls 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.
1740A/1750A Series Waveform/Vector Monitor User Manual
i
General Safety Summary
The common terminal is at ground potential. Do not connect
the common terminal to elevated voltages.
Do Not Operate Without Covers. Do not operat e this
product with covers or panels removed.
Use Proper Fuse. Use only the fuse type and rating speci-
fied for this product.
Avoid Exposed Circuitry. Do not touch exposed connec-
tions and components when power is present.
Do Not Operate With Suspected Failures. If you suspect
there is damage to this product, have it inspected by qualified
service personnel.
Do Not Operate in Wet/Damp Conditions.
Do Not Operate in an Explosive Atmosphere.
Keep Product Surfaces Clean and Dry.
Provide Proper Ventilation.
tion instructions for details on installing the product so it has
proper ventilation.
Safety Terms and Symbols
Terms in This Manual. These terms may appear in this
manual:
WARNING. Warning statements identify conditions or practices
that could result in injury or loss of life.
Refer to the manual’s installa-
ii
1740A/1750A Series Waveform/Vector Monitor User Manual
General Safety Summary
CAUTION. Caution statements identify conditions or practices
that could result in damage to this product or other property.
Terms on the Product. These terms may appear on the
product:
DANGER indicates an injury hazard immediately accessible
as you read the marking.
WARNING indicates an injury hazard not immediately
accessible as you read the marking.
CAUTION indicates a hazard to property including the
product.
Symbols on the Product. These symbols may appear on
the product:
CAUTION
Refer to
Manual
Not suitable for
connection to
the public tele-
communica-
tions network
WARNING
High Volt-
age
Double
Insulated
Protective
Ground (Earth)
Te r min al
1740A/1750A Series Waveform/Vector Monitor User Manual
iii
TABLE OF CONTENTS
Introduction
Product Description 1-1.............................
Features 1-2.................................
Options 1-5........................................
Power Cord Options 1-5.......................
CRT Options 1-6.............................
Accessories 1-7....................................
Standard Accessories 1-7.....................
Optional Accessories 1-7......................
Field Upgrade Kits 1-8........................
Installation 1-9.....................................
Repackaging for Shipment 1-9..............
Electrical Installation 1-10.......................
Mains Frequency and Voltage Range 1-11.....
Remote Connector 1-11.....................
RS232 Connector 1-11.......................
Mechanical Installation 1-12....................
Cabinets 1-12..............................
Custom Installation 1-12.....................
Rackmounting 1-13.........................
Instrument Configuration 1-15........................
At A Glance 2-1.....................................
Front-Panel Controls 2-1......................
Rear-Panel Connectors 2-8....................
Operator’s Checkout Procedure 2-12..................
Required Equipment 2-12....................
Initial Equipment Connections 2-12............
Procedure 2-13...............................
Operation Basics
Functional Overview 3-1.............................
1740A/1750A Series Waveform/Vector Monitor User Manual
v
Table of Contents
Using the Menus 3-5................................
Display Modes 3-1............................
Vector 3-1.................................
Waveform 3-1.............................
Audio 3-2.................................
SCH 3-2..................................
Picture 3-2................................
Time Code 3-3.............................
Multiple 3-3...............................
Displaying a Signal 3-3........................
Inputs 3-3.................................
General Menu Information 3-5.................
Multi-Use Bezel Controls and Buttons 3-5.....
Moving Between Menus 3-5.................
Clear Menu 3-6............................
Exiting a Menu Function 3-6.................
Filter Menu 3-7...............................
Cursor Menu 3-8.............................
Waveform Cursor Control 3-9................
Vector + Waveform (Multiple) 3-11............
Using the Cursors 3-11.........................
Line Select Menu 3-14.........................
Preset Menu 3-16.............................
Configure Menu 3-18..........................
INPUT 3-18.................................
VECTOR 3 -18..............................
FORMAT 3-19..............................
STANDARD 3-20............................
OFFSET 3-21...............................
CALIBRATE 3-21............................
REMOTE 3-23..............................
REFERENCE (Dual Standard Only) 3-23.......
vi
Gain Menu 3-24...............................
CRT Menu 3-24...............................
Remote Operation 3-25...............................
Using Presets through the Remote 3-25.......
1740A/1750A Series Waveform/Vector Monitor User Manual
Making Measurements
Basic Measurements 4-1............................
Waveform Graticule 4-1.......................
Horizontal Scale 4-1........................
NTSC Vertical Scales 4-2....................
PAL Vertical Scale 4-3......................
Dual-Standard Vertical Scale 4-4.............
Making Waveform Measurements 4-5...........
Horizontal Sync Amplitude 4-5...............
Peak White 4-5............................
K-Factor Measurements 4-5.................
Vector Graticule 4-7...........................
Making Vector Measurements 4-9..............
Chroma Bandwidth 4-9.....................
Table of Contents
Differential Phase and Gain 4-9..............
Making SC/H Phase Measurements 4-10........
NTSC 4-10.................................
PAL 4-12...................................
S C / H R --- Y 4 - 1 2.............................
Making Audio Measurements 4-15...............
Time Code Display 4-16........................
Calibration 4-17.....................................
Adjusting Instrument Gain 4-17.................
1740A/1750A Series Waveform/Vector Monitor User Manual
vii
Table of Contents
Appendices
Appendix A
Performance Specifications A-1......................
Appendix B
Remote Connectors B-1.............................
Appendix C
User Service C-1....................................
Reliability A-1..............................
Electrical Specifications A-2.................
Certifications and compliances A-13...........
Remote Connector Converter B-4...............
Cleaning or Replacing the Fan Filter C-1.........
Fuse Replacement C-1........................
Graticule Light Replacement C-2...............
Cleaning C-4.................................
Replacing the CRT Filter C-5...................
Appendix D
Software Version D-1................................
Glossary G-1.......................................
Index I-1...........................................
viii
1740A/1750A Series Waveform/Vector Monitor User Manual
LIST OF FIGURES
Figure 2-1. Multi-Use Bezel Controls and Buttons. 2-2........
Figure 2-2. 1740A Front Panel. 2-3......................
Figure 2-3. 1750A Front Panel. 2-4......................
Figure 2-4. 1740A/ 1750A--Series Rear Panel. 2-10...........
Figure 2-5. Equipment hook-up for Operator’s Checkout
Procedure. 2-12............................
Figure 2-6. Calibrator display. 2-14.......................
Figure 2-7. Two-Line LUM filter display of color bar signal. 2-17..
Figure 2-8. Two-Line CHROM filter display of color bar signal. 2-17
Figure 2-9. Two-Line DIFF filter display. 2-18................
Figure 2-10. Two-Line R--Y display of color bar signal. 2-19......
Figure 2-11. SC/H R--Y display (NTSC). 2-19................
Figure 2-12. SC/H R--Y display (PAL). 2-20..................
Figure 2-13. Line Select display in 2 FIELD sweep. 2-21........
Figure 2-14. Vectorscope color bar display. 2-22..............
Figure 2-15. Picture mode display of color bar signal. 2-22.......
Figure 2-16. Audio display with phase error. 2-23..............
Figure 2-17. NTSC SC/H display. 2-24.....................
Figure 2-18. PAL SC/H displ ay. 2-24.......................
Table of Contents
Figure 3-1. The CRT menu. 3-6........................
Figure 3-2. The VECTOR CURSOR menu. 3-8.............
Figure 3-3. The WAVEFORM CURSOR menu. 3-10...........
Figure 3-4. The VECTOR+WFM CURSOR menu. 3-10........
Figure 3-5. The PRESET menu display. 3-16................
Figure 3-6. The CONFIGURE menu display. 3-19............
Figure 4-1. NTSC waveform/vector graticule. 4-2............
Figure 4-2. PAL waveform/vector graticule. 4-3.............
Figure 4-3. Dual Standard waveform/vector graticule. 4-4......
Figure 4-4. Vector targets. 4-8.........................
Figure 4-5. Differential Gain and Phase Measurement s. 4-9....
Figure 4-6. NTSC dual-dot SC/H display. 4-11...............
Figure 4-7. NTSC single-dot SC/H display. 4-11..............
Figure 4-8. PAL SC/H display. 4-12.......................
Figure 4-9. Two-Line SC/H R--Y display (NTSC). 4-13.........
Figure 4-10. Two-Field SC/H R--Y display (NTSC). 4-13.........
Figure 4-11. Two-Field SC/H R--Y display (NTSC), showing
approximate 10° phase error. 4-14...............
1740A/1750A Series Waveform/Vector Monitor User Manual
ix
Table of Contents
Figure 4-12. Two-Field SC/H R--Y display (PAL). 4-14..........
Figure 4-13. Audio displ ays. 4-15.........................
Figure B-1. Rear panel REMOTE connector. B-1............
Figure B-2. REMOTE adapter. B-4.......................
Figure B-3. Rear panel RS232 connector. B-5...............
Figure C-1. Graticule light replacement. C-3................
x
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - FAX 781.665.0780 - TestEquipmentDepot.com
1740A/1750A Series Waveform/Vector Monitor User Manual
This user manual is one of a set of two ma nuals that document the
Tektronix 1740A/1750A-Series Waveform/Vector monitors. To
purchase a service manual, please refer to “Contacting Tektronix” on
Page xiv for address and phone number information.
User Manual
Instrument controls and readouts appear in ALL CAPITALS.
Topics covered in the user manual are as follows:
Introduction
Getting Started
Operation Basics
Preface
Making Measurements
Appendix A
electrical and mechanical.
Appendix B describes remote control interfaces.
Appendix C covers routine service procedures, such as
replacing fuses and graticule light bulbs.
The appendixes are followed by a glossary of specialized
terms and an index.
provides instrument specifications, both
1740A/1750A Series Waveform/Vector Monitor User Manual xi
Preface
Service Manual
Topics covered in the service manual are as follows:
Specifications
Operating Information
Theory of Operation
Performance Verification
Adjustment Procedures
Maintenance
Options
Electrical Parts List
Diagrams
Mechanical Parts List
xii
1740A/1750A Series Waveform/Vector Monitor User Manual
Preface
1750A Waveform / Vector Monitor.
1740A/1750A Series Waveform/Vector Monitor User Manual
xiii
Introduction
The 1740A/1750A--Series are combination waveform/vector
monitors in half-rack size packages. The 1740A--Series
provides all basic waveform monitor and vectorscope functions; the 1750A--Series provides the same functions wit h
SCH measurement capabilities added. The following products
are available:
Applications
Product Description
1740A / 1750A NTSC
1741A / 1751A PAL
1745A / 1755A NTSC / PAL (dual-standard)
Typical applications for these monitors include video signal
monitoring in camera control units, VTR bridges, produc tion
switcher consoles, mobile vans and field production systems.
The 1740A--Series is well-suited for porta ble applications
where a small, lightweight monitor is needed, and SCH
capability is not required. It is appropriate for many VTR
bridge applications, providing remote control and 90/100 Hz
sweeps for D-2 servo observation.
The 1750A--Series is useful in the composite edit suite,
providing all 1740A--Series features, plus the Tektronix polar
SCH display to match color subcarrier-to-horizontal sync
timing and color framing among edit sources.
1740A/1750A Series Waveform/Vector Monitor User Manual 1-1
Product Description
Features
H Composite or Component Waveform Monitoring
H Composite Vector Display
H Menu-Assisted Operation allows expanded feature set.
H Assignable cursors for time and voltage.
H Picture monitor mode for verifying signal source
H Stereo Audio Display
H Longitudinal time code display mode for editing applica-
tions
H SCH and Color Fram ing Displa y (1750A--Series only)
H External staircase from a camera control unit can be
selected remotely.
H Internal video filters provide specialized measurements,
with dual or triple filter modes available in
OVERLAY.
H Eight video inputs can be individually displayed or
selected in various combinations.
H Remote interface and serial RS232 interface.
Description of Features
Menu
A notable feature of these monitors is the menu-assisted
operation. An expanded feature set is possible through the
use of menus and multi-use controls and buttons. When the
operator selects a menu item, such as
CURSORS
label shows the current function of the controls.
, VARIABLE GAIN,orLINE SELECT, an on-screen
PARADE or
VOLTAGE/TIMING
1-2
Many instrument configurations tha t required moving internal jumpers or wire straps in t he 1740/1750--Series monitors
are made through an on-screen menu in the 1740A/ 1750A-Series. The operator can also recall up to 10 front-panel
setups through the
1740A/1750A Series Waveform/Vector Monitor User Manual
RECALL menu; 9 recalls are user-program-
Product Description
mable and 1 is factory-programmed. The FILTER menu also
provides a choice of four filters in addition to flat. Two
combination filtering modes can be displayed in
PARADE. Refer to “Using the Menus” on page 3-5 for more
OVERLAY or
menu information.
CRT
The monitors have a bright, post-accelerated CRT with
lighted internal graticule. The parallax-free internal graticule
structure contains targets and markings for both the vector
and waveform functions. A white phosphorus CRT is optional; refer to page 1-6 for details.
The bright CRT allows use in high ambient light conditions,
such as those encountered in field production applications.
Calibrator
Vertical and horizontal instrument gain can be set using the
calibrator signal. The 1 Volt calibrator signal is available in
100 kHz and F
More Information
H Standard and optional accessories are listed in the
Accessories section, which follows this product description.
H Instrument options are listed on page 1-5.
H A complete listing of instrument specifications begins on
Appendix page A-1.
(color subcarrier) rates.
SC
1740A/1750A Series Waveform/Vector Monitor User Manual
1-3
Product Description
1-4
1740A/1750A Series Waveform/Vector Monitor User Manual
White phosphor CRT and power cord options are the only
options currently available for the 1740A/1750A--Series.
Field upgrade kits listed in this section can also be used with
these monitors.
Power Cord Options
Any of the following power cord options can be ordered for
the 1740A/1750A--Series. If no power cord option is specified, instruments are shipped with a North American 125 V
power cord and one replacement fuse.
Unless otherwise specified, power cords for use in North
America are UL listed and CSA certified. Cords for use in
areas other than North America are approved by at least one
test house acceptable in the country to which the product is
shipped.
Options
Option A1. Power, Universal Europe, 220 V/16 A
(Locking Power Cord)
Option A2. Power, United Kingdom, 240 V/15 A
(Power Cord)
Option A3. Power, Australia, 240 V/10 A
(Power Cord)
Option A4. Power, North America, 250V/10 A
(Power Cord)
Option A5. Power, Swiss, 240 V/6 A
(Power Cord)
1740A/1750A Series Waveform/Vector Monitor User Manual 1-5
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176 - FAX 781.665.0780 - TestEquipmentDepot.com
Options
CRT Options
The standard instrument is shipped with a P31 (green)
phosphor CRT installed. If Option 74 is ordered, the instrument is shipped with a P4 (white) phosphor CRT installed.
The Option 74 CRT part numbers a re given in the service
manual, at the end of the Replaceable Electrical Parts List.
1-6
1740A/1750A Series Waveform/Vector Monitor User Manual
Standard Accessories
These accessories are included with the product:
1 Manual, user: 1740A/1750A--Series
(070--8470--XX)
1 Cable assembly, power: United States and Japan
only (161--0216--XX)
1 Cable assembly, power: all other countries
(161--0066--XX)
1 Fuse, cartridge: 3AG, 2A, 250V, fast-blow
(159--0021--00)
4 Light bulbs: graticule scale (150--0168--00). See
page C-1 for replacement instructions.
Accessories
4 Air filters: fan (378--0335--00). See page C-1 for
replacement instructions.
This accessory is installed on the product:
1 CRT filter: smoke gray (378--0258--00)
Optional Accessories
Manual, service: 1740A/1750A/1760--Series
(070--8469--XX)
Camera, C9 Option 20
Viewing Hood (016--0475--00)
Front-Panel Cover (200--3897--01)
1740A/1750A Series Waveform/Vector Monitor User Manual 1-7
Accessories
Field Upgrade Kits
1700F00 Plain Cabinet — This plain metal half-rack
size cabinet is painted silver-gray. Ventilating holes in top,
bottom, and sides of the cabinet allow heat generated within
the instrument to dissipate.
1700F02 Carrying Case — This portable cabinet is
similar to the 1700F00, but has feet, carrying handle, flipstand, and front cover.
1700F05 Side-by-Side Rack Adapter — The
1700F05 allows the user to mount two half-rack width
instruments in a standard 19--inch rack.
1700F06 Blank Panel — If only one section of a
1700F05 is used, t he 1700F06 Blank Panel can be inserted in
the unused section to improve appearance and air flow.
1700F07 Utility Drawer — When only one side of a
1700F05 is used, t his utility drawer can be installed in the
unused section to provide storage. The drawer ope ns and
closes freely, unless latched for transport.
Ordering — These items can be ordered with the monitor,
or purchased through a Tektronix field office or distributor.
When ordering, include both the name and number of the
Field Upgrade Kits.
Installation — Cabinet installation instructions begin on
page 1-12. Dimensional drawings are also shipped with each
cabinet. For more information, contact a Tektronix field
office or distributor.
1-8
1740A/1750A Series Waveform/Vector Monitor User Manual
Installation
Unpacking
Save the shipping carton and packing materials (including
anti-static bag) in case it becomes necessary to ship the
instrument to a Tektronix Service Center for service or repair.
Accessories
Check that the following accessory items are included:
H User Manual
H Service Manual
Note: The Service Manual is an optional accessory
that must be ordered to be received.
H Power Cord
H Replacement Fuse Cartridge (1)
H Replacement Graticule Light Bulbs (4)
H Replacement Air Filters for Fan (4)
Repackaging for Shipment
If it becomes necessary to ship the instrument to a Tektronix
Service Center for service or repair, follow these instructions
for repackaging:
1. Attach a tag to the instrument showing: the owner,
complete address and phone number of someone at your
firm who can be contacted, the instrument seri al number
and a description of the required service.
2. Package the instrument in the original packaging materials. If the original packaging materials are not available,
follow these directions:
1740A/1750A Series Waveform/Vector Monitor User Manual 1-9
Installation
cushioning on all sides of the instrument.
3. Seal the carton with shipping tape, industrial sta pler, or
both.
Electrical Installation
Power Source
These monitors are designed to operate from a single-phase
power source having one of its current-carrying conductors at
or near earth ground (the neutral conductor). Only the line
conductor is fused for over-current protection. Systems that
have both current-carrying conductors live with respect to
ground (such as pha se-to-phase on multiphase systems) are
not recommended as power sources. A protective ground
connection by way of the grounding conductor in the power
cord is essential for safe operation.
When power is supplied, line voltage will be
present in the instrument, even if the
is set to
STANDBY.
NOTE
POWER switch
1-10
1740A/1750A Series Waveform/Vector Monitor User Manual
Installation
WARNING
Mains Frequency and Voltage Range
The 1740A/1750A--Series monitors operate at 50 and 60 Hz,
over the range of 90--250 Volts, without operator adjustment.
Remote Connector
The rear-panel REMOTE connector is a 25-pin, D-type connector. It provides the input for
horizontal, and remote sync. It also accepts the input signals
for external blanking, time code, stereo L and R audio. TTL
signal or ground closure to designated pins will enable
Staircase, External Horizontal, or Remote Sync displays.
Eight front-panel setups can also be stored and recalled
through the
REMOTE connector. REMOTE connector pin
assignments begin on page B-1.
RGB/YRGB staircase, external
RS232 Connector
The rear-panel RS232 connector is a 9-pin subminiature
D-type connector that provides a serial interface for remote
control. The RS232 pin assignments are given on page B-1.
The RS232 interface is not supported at t he time of this
printing.
Operational Changes
No operational modifications are made to these monitors
through internal jumper settings. Input coupling,
STORER
clamp time, RGB/YRGB selections and other similar
configurations are changed through the on-screen menu.
Instrument configuration is described on page 3-18.
DC RE-
1740A/1750A Series Waveform/Vector Monitor User Manual
1-11
Installation
Mechanical Installation
All qualification testing was performed with a Tektronix
1700F00 cabinet installed. To guarantee compliance with
specifications, the instrument should be operated in a cabinet
or rackmount adapter. The Tektronix 1700F00, 1700F02,
and 1700F05 provide the proper electrical environment for
the instrument, supply adequate shielding, minimize handling
damage, and reduce dust collection within the instrument.
Cabinets
WARNING
Do not lift a cabinetized instrument without installing the mounting screws. There is nothing to hold
the instrument in the cabinet if it is tipped forward.
The 1700F00 is a pl ain cabinet designed for permanent
installations, and the 1700F02 is a portable cabine t with
handle, feet, flipstand, and front cover. Orderi ng inform ation
is given on page 1-8.
Custom Installation
For applications such as consoles, the instrument can be
mounted with front molding flush or protruding from the
console. In both cases, allow approximately three inches of
rear clearance for
mount the instrument safely, attach it to a shelf strong
enough to hold its weight, using the four 0.156-i nch diameter
holes in the bottom of the 1700F00 cabinet. Refer to the data
sheet included with the cabinet for hole locations.
BNC and power-cord connections. To
1-12
1740A/1750A Series Waveform/Vector Monitor User Manual
Installation
Rackmounting
The 1740A/1750A--Series monitors are half-rack width and
three rack units high. They require approximately three
inches of rear clearance for power cord and cable connections, and 20 inches in front of a rack for installation and
removal of the instrument.
The optional 1700F05 rack adapter allows two Tektronix
half-rack instruments to be mounted side-by-side in a rack.
It is adjustable so that the instrument can be closely aligned
with other equipment in the rack. If only one section of the
rack adapter is used, a 1700F06 blank panel or 1700F07
utility drawer can be inserted in the unused section. Ordering information is given on page 1-8.
1740A/1750A Series Waveform/Vector Monitor User Manual
1-13
Instrument Configuration
Focus, scale illumination, signal intensity, readout intensity,
and trace rotation are set through the CRT menu.
Several instrument operating parame ters can be set through
CONFIG menu.
the
Instructions for using these menus begin on page 3-18.
1740A/1750A Series Waveform/Vector Monitor User Manual 1-15
Getting Started
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