Atec 1730 User Manual

Section 1 Introduction and Specification

The TEKTRONIX 1730-Series is an 8-1/2-inch wide by 5-1/4-inch high waveform monitor, weighing approximately 8 pounds. The 1730 (System M, NTSC) and the 1731 (System I, B, etc., PAL, PAL-M), and the 1735 (dual-standard) versions can be powered from an ac source or, with the addition of a field upgrade kit (1700F10), 12 Vdc. The CRT occupies approximately two-thirds of the front-panel area, with the control panel taking up the remainder of the space. Operation is controlled by a microprocessor that polls the front-panel switches and remote ground closures. Front-panel switches are of the momentary touch type with lighted functional indicators. Most of the switches are also used to select special functions, which are accessed by holding the switches in until the microprocessor recognizes the request.

The signal is displayed on a bright CRT capable of displaying one line per frame. It is of the mesh type, for better geometry, and uses an internal graticule to reduce parallax. Variable graticule scale illumination provides even lighting to improve measurement accuracy and the quality of waveform pictures. Option 74 provides a P4 (white) phosphor tube.

The Channel A and B Composite Video Inputs and the External Reference Signal Input are high impedance bridging loop-throughs, in order to protect the integrity of the signal paths. The input switching allows for the display of either Channel A or Channel B Input or both inputs. Synchronization can be either internal or external, with the further choices of using remote sync or 90 or 100 Hz synchronization, from a VTR, where the application warrants.

The 1730-Series offers a choice of three basic sweep rates: 2 Field, 2 Line, and 1 Line, each of which can be magnified to provide three additional sweep rates: 1 ms (2 Line), 0.2 ms (1 Line), and X25 (2 Field) which provides for viewing the complete vertical interval. In addition, there is full frame line selection that can be displayed as 1 line, 2 lines, or 15 lines. A bright-up pulse, for picture monitors, that corresponds to the intensified region on the CRT display, is available through a rear-panel bnc connector.

The vertical signal processing provides a choice of fast or slow dc restoration, or an unclamped display. The input signal can be unfiltered (Flat) or either Low Pass or Chrominance filtered. There is also a combination of Flat and Low Pass filtering available when a 2 Line or 2 Field sweep rate is employed; the display consists of one line or field low pass filtered while the second is unfiltered. Vertical amplitudes can be displayed in a calibrated gain mode, which corresponds directly with the graticule vertical scales, magnified 5 times, or can be set to a specific amplitude by using the Variable GAIN control.

1–1

1730–Series Introduction

An RGB or YRGB Parade display, for camera setup, is accommodated with a shortened sweep. The input of the camera signal and an enable are through the rear-panel REMOTE jack. The choice of 3-step (RGB) or 4-step (YRGB) is made by changing the position of an internal jumper.

The 1730-Series has a unique Store and Recall function built in that allows for the storing of up to four front-panel setups that can be recalled by pressing the appropriate recall button, or a ground closure through the rear-panel REMOTE connector. In addition, four factory-programmed measurement setups can be accessed, by external ground closures input through the REMOTE connector.

An auxiliary output, to control a companion 1720-Series Vectorscope, is provided through a rear-panel connector. The auxiliary output contains a bus for two-way communications between the waveform monitor and vectorscope microprocessors and a strobe to provide line select unblanking for the Vectorscope.

Typical Configurations

The 1730-Series Waveform Monitor is designed for operation either alone or with a 1720-Series Vectorscope. Line select and measurement recall for this waveform monitor are also used by the vectorscope. Because of these capabilities, and the available 90 or 100 Hz triggering, the 1730-Series Waveform Monitor is ideally suited to operate in a VCR bridge. With its factory-preset measurement routines, that can be accessed through the rear-panel REMOTE connector and the Store/Recall functions, it is possible to have one-button measurements of key parameters, including various vectorscope measurements.

In addition to the VCR bridge and the typical Master Control monitoring applications, this monitor can be used in camera chains. It has a choice of RGB or YRGB Parade display that can easily be selected by changing one internal jumper setting. The Parade signal and enable are input through the rear-panel REMOTE connector.

A number of operating conditions can be altered by changing internal jumpers, using some of the factory-preset combinations, or setting up and saving the front panel with the Store/Recall function. Using these methods most of the current 528A operational modes can be accommodated. There is a difference in how the remote control operates — the 1730-Series uses ground closures, not positive voltage as the 528A did.

1–2

Options

1730–Series Introduction

CRT Options

Power Cord Options

Accessories

Standard Accessories

The standard instrument is shipped with a P31 (green) phosphor CRT installed. Option 74 instruments are shipped with a P4 (white) phosphor CRT installed.

Any of the power cord options described in Section 7 can be ordered for the 1730-Series. If no power cord option is ordered, instruments are shipped with a North American 125 V power cord and one replacement fuse.

The following accessories are shipped with the 1730-Series. Part numbers for these accessories are located at the end of the Replaceable Mechanical Parts list.

1 1730-Series Instruction Manual 1 Power Cord, with selected power plug option 1 Replacement Cartridge Fuse (correct rating for the power

plug option)

3 Replacement Scale Illumination Bulbs (Tektronix Part

No. 150-0168-00 or ANSI #73)

Optional Accessories

There are a number of accessories that can be used with a 1730-Series Waveform Monitor. The following is a list of the most common accessory items for this series of waveform monitors. 1700F items are Field Upgrade Kits that are installed by the customer; instructions are included in all Field Upgrade Kits.

Viewing Hood (016-0475-00) Front Panel Cover (200-3897-01) 1700F00, Plain Cabinet (painted silver-grey) 1700F02, Portable Cabinet (painted silver-grey) 1700F05, Side-by-Side Rack Adapter 1700F06, Blank Half-Rack Width Panel 1700F10, DC Power Converter

1–3

1730–Series Introduction

Safety Information

Specification

The 1730-Series is intended to operate from an ac power source that will not apply more than 250 V rms between the supply conductors or between either supply conductor and ground. A protective ground connection by way of the grounding conductor is essential for safe operation (except for those instruments that are operated from a battery supply).

The 1730-Series was tested for compliance in a cabinet. To ensure continued compliance, the instrument will need to be enclosed in a cabinet that is equivalent to the Factory Upgrade Kits that are listed as Optional Accessories for the 1730-Series. A drawing of the 1700F00 plain cabinet is contained in the Installation Instructions (Section 3).

In the specification tables that follow, some items are identified as performance requirements. These can be verified by performing the Performance Check Procedure in Section 5. Not all performance requirements have a measureable tolerance, and therefore do not have a performance check step; however, they are either verified by indirect means, through other portions of the procedure, or are design criteria that do not need to be tested for individual instruments.

Whenever there is a verifiable performance requirement, in the specification table, there will also be a reference to identify the location, in the Performance Check Procedure, of the appropriate performance verification procedure.

The supplemental Information designation in the tables indicates that this is information that either amplifies a performance requirement or is special information that is of importance. Unlike performance requirements, there is no need, and often no way to check these items to any specific tolerance.

1–4

1730–Series Introduction

T able 1–1: Vertical Deflection System

Characteristic Requirement Supplemental Information

Frequency response Flat

Flat: 50 kHz to 6 MHz within 2% of response at 50 kHz. Flat (X5): 50 kHz to 6 MHz within 5% of response at 50 kHz.

Specifications apply for full screen height video input signal, with variable GAIN off.

Step Number

Low-pass filter

Chroma filter

Transient response Preshoot: ≤1%

Field rate tilt ≤1% Field rate square wave or vertical

Line rate tilt ≤1% 25 ms bar 15 Overscan Less than 2% variation in baseline of

Differential gain Displayed differential gain is ≤1% with

Deflection factor 140 IRE (1.0 V) within 1% with 1 V

1730: At least 30 dB attenuation at

3.58 MHz 1735: 4.00 MHz 1731: 4.43 MHz

NTSC and PAL-M: Nominal bandwidth 1 MHz. Attenuation at 7.2 MHz 20 dB or greater. Response at 3.58 MHz does not vary between FLAT and CHROMA by more than 1%.

PAL: Nominal bandwidth 1 MHz. Attenuation at 8.9 MHz 20 dB or greater. Response at 4.43 MHz does not vary between FLAT and CHROMA by more than 1%.

Pulse-to-Bar Ratio: X1: 0.99:1 to

1.01:1X5: 0.98:1 to 1.02:1 Overshoot: X1: 2% or less X5: 4%

or less Ringing: X1: 2% or less X5: 4% or

less

100 IRE (700 mV) 12.5T (20T) modulated pulse as it is positioned over the middle 80% of the screen.

10% to 90% APL changes.

input.

Response at 15 kHz does not vary between FLA T and LPASS by more than 1%

Upper and lower –3 dB points are approximately ±350 kHz from

3.579545 MHz. 15 to 35 C operating temperature.

Upper and lower –3 dB points are approximately ±350 kHz from

4.433619 MHz. 15 to 35 C operating temperature.

Specifications apply for full screen height video input signal, with variable GAIN off.

window

Chroma filter must be selected. Baseline at 50 IRE and displayed subcarrier adjusted to 100 IRE with VAR gain.

1 V full scale. 20-30 °C, Flat response selected. Vertical gain temperature coefficient is –0.3%/10 °C.

15, 16

1–5

1730–Series Introduction

T able 1–1: Vertical Deflection System (Cont.)

Characteristic

X5 gain accuracy ±5% 1 V input signal 9 X5 gain registration ≤1 major div. of vertical shift from

baseline.

Variable gain range Input signals between 0.8 V and 2 V

can be adjusted to 140 IRE (1.0 V) display. 160 mV and 400 mV for X5 gain.

Position range 1 V signal can be positioned so that

peak white and sync tip can be placed at blanking level, with the DC RESTORER on, regardless of gain setting.

Maximum absolute input level ±5 VDC + peak AC Displays in excess of 200 IRE

DC input impedance Greater than 15 kW (unterminated) Return Loss (75 W) video inputs

(CH-A, CH-B)

Crosstalk between channels Greater than 50 dB of isolation

Loop through isolation Greater than 80 dB of isolation

PIX MON frequency response 50 kHz to 6 MHz, within 3% of

PIX MON differential gain (50% APL) Within 1% with a 140 IRE (1.0 V) unit

PIX MON differential phase (50% APL)

PIX MON DC level on output 0.5 V or less into 75 W. load No input signal 11 PIX MON intensification (bright-up) During line select only. Active video of

PIX MON output impedance 75 W. (nominal) PIX MON return loss (75 W) ≤30 dB, 50 kHz to 6 MHz With instrument turned on 19 Input to PIX MON output gain ratio 1:1 ±5% at 15 kHz 11

≥40 dB from 50 kHz to 6 MHz A and B channels, loop-through

response at 50 kHz

display Within 1° with a 140 IRE (1.0 V) unit

display

Supplemental InformationRequirement

Unmagnified to magnified display 9

Applies to calibrated gain positions only

(1.428 V) may cause frequency response aberrations.

terminated in 75W. Input in use or not in use, instrument power on or off, all deflection factor settings.

between channels. Measured at F between Channel A, Channel B, and EXT REF.

between loop-throughs. Measured at FSC between Channel A, Channel B, and EXT REF.

Terminated in 75 W 14

selected lines has a DC offset of approximately 180 mV .

Step Number

1–6

1730–Series Introduction

T able 1–2: DC Restoration

Characteristic Requirement Supplemental Information

DC restorer clamp time Back porch Frequency response at 60 Hz Slow: 20% or less

Fast: 90% or greater

Blanking level shift with 10% to 90% APL change

Blanking level shift due to presence or absence of burst

APL changes from 50% to either 10% or 90% will cause blanking level shift of 1 IRE unit (7.14 mV) or less.

1 IRE unit (7.14 mV) or less shift from no color burst to presence of color burst.

Attenuation of 60 Hz on input signal 12

Step Number

T able 1–3: Calibrator

Characteristic Requirement Supplemental Information

Frequency 100 kHz ±100 Hz Synchronizes in 2H and 1H sweeps. Crystal controlled. Timing

accuracy is 10 µs, ±0.01 µs. Can be used as 10 µs and 1 µs timing

calibrator. Amplitude 140 IRE (1 V) within 1% 10 Position Top of waveform must be between 80 IRE (0.86 V) and 120 IRE

(1.14 V) on graticule when backporch is positioned to 0 IRE (0.300 V)

line, with DC RESTORER on.

T able 1–4: Horizontal Deflection System

Characteristic Requirement Supplemental Information

Sweep Sweep occurs in all horizontal mode

settings with or without synchronization.

2FLD sweep repetition rate Equal to frame rate of applied video or

external sync

2FLD sweep magnification Approximately X25

Step Number

1–7

1730–Series Introduction

T able 1–4: Horizontal Deflection System (Cont.)

Characteristic

1LINE sweep repetition rate Equal to line rate of applied video or

external sync

2LINE sweep repetition rate Equal to half line rate of applied video

or external sync

Sweep length 2LINE and 2FLD sweep length is

Timing accuracy All timing and linearity specifications

10 µs/div. (2LINE) sweep accuracy Within 2% 6 5 µs/div . (1LINE) sweep accuracy Within 2% 6

0.2 µs/div. (1LINE + MAG) sweep accuracy

Integral linearity Within 1% Measured between the 10 ms and

Sweep magnifier registration Magnification occurs about center of

HORIZONT AL position Any portion of a synchronized video

Within 2% 6

sweep can be positioned on screen in all sweep modes.

Supplemental InformationRequirement

nominally 12.5 divisions.

exclude the first and last major divisions of the unmagnified display. Timing can be adjusted ±5% with front-panel H CAL.

110 ms points on the 10 ms/division sweep. Calibrator transitions fall exactly on graticule marks.

screen

Step Number

1–8

T able 1–4: Horizontal Deflection System (Cont.)

Characteristic

LINE SELECT Displays the selected line in 1LINE.

Displays the selected line first in 2LINE. Intensifies selected line in 2FLD. In 15LINE, displays overlayed lines in 1 or 2LINE, intensifies the selected 15 lines in 2FLD. A small 15 is added to the bottom of the CRT readout in 15LINE mode.

Readout NTSC:

Supplemental InformationRequirement

Field 1: Lines 1 to 263 Field 2: Lines 1 to 262 All: Lines 1 to 262

PAL Field 1: Lines 1 to 313 Field 2: Lines 314 to 625 All: Lines 1 to 312

1730–Series Introduction

Step Number

PAL-M Field 1: Lines 1 to 263 Field 2: Lines 264 to 525 All: Lines 1 to 262

T able 1–5: Synchronization

Characteristic Requirement Supplemental Information

Input requirements, internal reference NTSC and PAL–M

Composite video or black burst with sync amplitudes 40 IRE ±6 dB

PAL

External reference Sync amplitude between 143 mV and

External reference, DC input impedance (unterminated)

Return loss (75 ) At least 40 dB from 50 kHz to 6 MHz Loop-through terminated in 75 ,

Absolute maximum input voltage ±12 VDC plus peak AC

Composite video or black burst with sync amplitudes 300 mV ±6 dB

4 V will synchronize sweeps

Greater than 15 k

instrument power on or off

Step Number

4 4

1–9

1730–Series Introduction

T able 1–5: Synchronization (Cont.)

Characteristic

Remote sync Amplitude

Sweep trigger polarity

90/100 Hz triggering amplitude 2.0 to 5.0 V square wave 90/100 Hz triggering frequency NTSC: 90 Hz ±15%

2.0 to 5.0 V square wave, or 4.0 V comp sync

PAL: 100 Hz ±15%

Supplemental InformationRequirement

Input and enabled through rear-panel REMOTE connector. Input Impedance 1 M. 30/60 Hz (25/50 Hz) square wave will sync 2FLD Sweep. Remote sync bypasses the sync stripper and field ID circuits.

Internal jumper selects polarity. Normal: Negative-going edge line sync, positive edge of field sync. Inverted: Positive-going edge line sync, negative edge of field sync.

Step Number

T able 1–6: RGB/YRGB Mode

Characteristic Requirement Supplemental Information

RGB/YRGB Will display either a 3-step or 4-step RGB/

YRGB parade or overlay display.

Staircase amplitude A 10 V input will result in a horizontal display

of 9 divisions ±1.4 major divisions.

Sweep repitition rate Field or line rate of displayed video or external

sync signal as selected by front-panel HORIZONT AL controls.

Control RGB/YRGB mode and parade/overlay

Magnifier Approx. X25 for 2FLD, and X10 in 1 or 2LINE. Sweep length 3-step: 3.4 — 4.1 divs

4-step: 2.5 — 3.1 divs

Internal jumper is used to change from 3-step to 4-step capability . Factory set to 3-step.

Internal adjustment offsets any incoming signal DC component between ±12 V . Input impedance 1 M shunted by approx. 3 pF.

Field or line rate, if enabled from the REMOTE connector.

selected by applying ground (TTL low) at the RGB enable pin on the rear-panel REMOTE connector. RGB components may be overlayed with normal sweep length by not activating RGB enable.

Field or line rate sweeps. A 1FLD sweep is selected by grounding the 1FLD/1LINE pin of the rear-panel REMOTE connector.

Step Number

1–10

1730–Series Introduction

T able 1–7: CRT Display

Characteristic Requirement Supplemental Information

CRT viewing area 80 X 100 mm

Horizontal = 12.5 div

Vertical = 170 IRE units (1.19 V) Accelerating potential Nominally 13.75 kV Trace rotation range Greater than ±1° from horizontal Total adjustment range is typically 8° Graticule Internal, variable illumination

T able 1–8: Power Source

Characteristic Requirement Supplemental Information

Mains voltage range 90 – 250 V Continuous range from 90 to 250 VAC Mains frequency 50 or 60 Hz Power consumption 56 VA (35 Watts)

T able 1–9: Environmental Characteristics

Characteristic Requirement

Operating temperature 0 to 50 °C (+32 to 122 °F) Storage temperature –40 to 75 °C (–40 to 158 °F) Operating altitude To 15,000 feet (4572 meters) Storage altitude To 50,000 feet (15,240 meters) Vibration 5 minutes at 5 - 15 Hz with 0.060 inch displacement. 5 minutes at

15 - 25 Hz with 0.040 inch displacement. 5 minutes at 25 - 55 Hz with 0.020 inch displacement. Military Specification: Mil-T-28800D, Paragraph 1.2.2, Class 3.

Mechanical shock Non operating: 50 g’s 1/2 sine, 11 ms duration, 3 shocks per

surface (18 total).

Transportation Qualified under NST A Test Procedure 1A, Category II (24 inch

drop).

Humidity Will operate at 95% relative humidity for up to five days. Do not

operate with visible moisture on the circuit boards.

1–11

1730–Series Introduction

T able 1–10: Certifications and Compliances

Category Standards or Description

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 Union:

EN 50081-1 Emissions:

EN 55022 Class B Radiated and Conducted Emissions

EN 50082-1 Immunity:

IEC 801-2 Electrostatic Discharge Immunity IEC 801-3 RF Electromagnetic Field Immunity IEC 801-4 Electrical Fast Transient/Burst Immunity

High-quality shielded cables must be used to ensure compliance to the above listed standards.

This product complies when installed into any of the following Tektronix instrument enclosures:

1700F00 Standard Cabinet 1700F02 Portable Cabinet 1700F05 Rack Adapter

Australia/New Zealand

Complies with EMC provision of Radiocommunications Act per the following standard(s):

Declaration of Conformity – EMC

AN/NZS 2064.1/2 Industrial, Scientific, and Medical Equipment: 1992

AN/NZS 3548 Information T echnology Equipment: 1995 FCC Compliance Emissions comply with FCC Code of Federal Regulations 47, Part 15, Subpart B, Class A Limits. Installation (Overvoltage)

Atec 1730 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual