Atec VM700T User Manual

Recognized with eight technical
Emmy awards and one Oscar for
outstanding contributions to the
television industry, Tektronix
world class core competencies
have enabled it to design and
deliver the most comprehensive
solutions in the industry.

The VM700T is a product of this
core competency. Recognized as
the defacto industry standard
that keeps pace with evolving
customer needs, the VM700T is a
total solution for your baseband
video and audio
measurement needs. Features
such as an extremely fast and
fully automatic measurement
mode as well as full manual oper-

ovides the first time user

pr

ation
as well as the seasoned professional
an unequaled value for their test
and measur

Automatic video measur

The VM700T Auto mode makes
standard video transmitter mea-

ements quickly and automati

sur
cally, including those specified
in RS-250C/EIA-250C, NTC-7
and RS170A. Both vertical interval
and full field measur
be made and compar

1

Option 40 audio measurement package.

Copyright © 1996, T

1

monitoring and

ement investment.

ement set

ements can
ed with

onix, Inc. All rights reserved.

ektr

VM700T (turbo)
Video Measurement Set
Option 01
NTSC Video Measurements

Many capabilities in one instrument
– Digital waveform monitor
– Digital vectorscope
– Picture Display
– Group delay and frequency

response
– Noise measurement set
– Automatic measurement set

Auto mode
– Unattended monitoring of NTSC

video signals from studios, STLs,

Earth Stations, and transmitters
– User-specified limits

Measure mode provides graphic
display of measurements

user-defined limits. A dual limit
verification system is employed
to generate a caution or alarm
message when either limit is vio­lated. Reports can be generated
and printed automatically at
operator scheduled times or
triggered from a conditional event.

Graphic displays of measurements

Measur
real time graphic displays of
measurement results automati­cally. Vertical interval or full
field measurements including
noise spectrum, group delay,
K-factor, differential gain and
differential phase are presented
as clever
interactive digital displays. Such
displays ar
extremely fast measurement
update rates (up to 30 times a
second) ar
instant feedback of critical
adjustments and analysis of sig­nal variations. User definable
limits ar

­into each graphic display and

can be used to trigger
ment report or a user definable
macro function. Such a function
can, for example, dial out through

e mode pr

, easy to understand

e visually integrated

ovides virtual

e indispensable when

e required to provide

a measur

– ICPM
– K factor
– Differential gain and phase
– Chrominance to luminance delay
– Noise spectrum
– Group delay with sin x/x
– Color bars
– Relative to reference on most

measurements

– Configurable for all standard

test signals

Award winning user interface

State-of-the-art architecture

Extremely fast update rate

Parallel and serial printer ports

Three input channels

Channel difference modes

nal VGA display port

Exter

Fully documented r
operation

-

e

dcopy for analysis and

Har
documentation

emote contr

ol

a modem to report measurement
results or control a signal router.
A relative to reference mode

llows normalizing to a signal

a
source or eliminate signal path
errors from the desired
measurement. Up to 2 video

eferences can be stored in

r
NVRAM. Additionally, after
downloading to a PC through the
VM700T FTP driver, the video
reference can be uploaded to

nother VM700T for reuse. A

a
running averaging mode can be
used to reduce the effect of noise.
When additional measurement
data is required a user can custom
configure measurement parameters
and report format.

A powerful Test Signal search
capability quickly and automati­cally locates and identifies valid
test signals required for a selected
measurement, eliminating the
annoying and time consuming
task of manually locating
test signals.

Digital waveform monitor/
vectorscope

The VM700T Waveform mode
application provides real time
graphics displays of the video
signal allowing many additional
measurements to be made manu­ally. Easy to use measurement
cursors are available to measure
time, frequency and amplitude
parameters of a video signal. These
cursors allow a very quick and
precise location of the 10%, 50%
and 90% points on any transi­tion. Cursor mode also employs
an automatic calculation in the
wave shape in the center of the
display. The parameters calculated
are sine peak-to-peak amplitude,
frequency, and offset from blanking
level. This is very useful for

equency response measur

fr

ements

with the Multiburst signal.

The waveform display can be
expanded ar

ound any point both
vertically and horizontally. Since
the data is digitized, the display

emains bright and easy to ready

r
at all expansion factors. The
scales automatically expand with
the waveform, so all units are

ect as displayed. A channel

r

cor
difference mode (A-B, A-C, B-A,
B-C, C-A, and C-B) is also pr

ovided.

A screen memory selection

enables Envelope mode, which
is useful for looking at teletext,
Jitter, or other changes over time.

Vector mode provides the normal
vectorscope display. The vectors

ay be rotated or expanded,

m
with the rotation angle and gain
values displayed numerically on
the screen.

A unique “Find ColorBars”
feature searches all video for
ColorBars and displays the

ectors if found. The vectors can

v
be referenced to either the
selected channel’s burst or the
burst of one of the other two
channels or continuous subcarrier.
The phase difference between
the selected channel and the
reference is always displayed.

Select Line in both Waveform
and Vector modes can be used
to quickly specify any line for
display or automatic measurement
if it is the proper signal.

Picture mode

The signal source can be quickly
verified using the picture display.
Additionally, a “bright-up” line
select mode allows a user to
select any video line for use in
Measure mode or for viewing in
Waveform or Vector mode.

User programmable functions

Function mode is an extremely
powerful feature that allows a
user to store a sequence of user
operations as a macro function
for later “playback.”

For example, a set of measure

­ments (complete with hardcopy
commands) to be made on a
transmitter demodulator video
output, could be stored as a
function labeled “DEMOD.” The
function “playback” could then
be initiated manually, remotely
or completely automatically as a
user specified timed event. Function
files can be stor

ed as a text file
on a PC for editing, copying or
uploading to another VM700T.
Other function capabilities
include controlling of external
serial devices such as video/audio
routers, switchers, signal
generators, telephone modems
and many other devices which

t RS232 communications.

suppor

Hardcopy

All information on the screen
may be printed in high resolution
graphics on printers supporting

ostScript

P

®

Hewlett-Packard

,

®

LaserJet™, DeskJet™, and
ThinkJet™, or 24-pin Epson

®

graphics via the Centronics

ompatible parallel port or

c

tandard RS-232C interface.

s

Automatic measurement results

n text format can be printed on

i
most ASCII printers using the
parallel or serial ports.

Remote Operation

The VM700T has a powerful and
fully documented remote control
language. The VM700T can thus
be operated from a remote terminal
via RS-232C to monitor unattended
transmission systems. In addition,
all files can be uploaded to a
main computer, and downloaded
to other VM700Ts. Two different
protocols are supported: FTP
(File Transfer Protocol) and
TELNET

. The user can also select
a “no protocol” mode of the
RS-232C interface when dealing
with low baud rates. However,
file transfers can only take place
with FTP.

Specifications

The performance requirements
cited in this section are valid
only within the following
environmental limits:

emperatur

T

e range of 0 to 50
degrees Celsius, with a
minimum warm-up time of 20
minutes. The following tables
list each measurement and its

formance requirement.

per

The range specifies the extremes
between which a measurement
can be made.

All measurement accuracies
specified ar

e valid only with
nominal input signals of 1 volt

6 dB) with an unweighted

±

pk-pk (
signal-t-noise ratio of at least
60 dB on the incoming signal
and a termination accuracy of

onix PN 011-

0.025% (T

±

ektr

0102-01 or equivalent).

2

E

0.5

0.0

Volts

S

ound-In-Sync On

S

ound-In-Sync On

P

recision Mode Off

P

recision Mode Off

F2
L16

F2
L17

MicroSeconds

20.0 40.0 60.0 80.0 100.0 120.0

Sync = SourceSync = Source

1

00.0

5

0.0

0.0

IRE:FLT

F

rames selected:

F

rames selected:

11 22

525 line NTSC525 line NTSC Synchronous Synchronous
S

low clamp to 0.00 V at 6.72 uS

S

low clamp to 0.00 V at 6.72 uS

No Filtering No Filtering

A

PL = 56.3%

A

PL = 56.3%

Center
L

eft

Center
L

eft

Lock
L

eft

Lock
L

eft

Center
R

ight

Center
R

ight

Lock
R

ight

Lock
R

ight

Reset
C

ursors

Reset
C

ursors

Reset
D

iffs

Reset
D

iffs

Cursors
S

tay On

Cursors
S

tay On

Sinewave at middle of screen is too small or frequency too low for measurement. Sinewave at middle of screen is too small or frequency too low for measurement.

0.0

-0.2

Volts

Sound-In-Sync On Sound-In-Sync On Precision Mode OffPrecision Mode Off

T

ime from L to R: 4.664 MicroSeconds

T

ime from L to R: 4.664 MicroSeconds

Frequency (1/T): 0.214389 MHzFrequency (1/T): 0.214389 MHz

F2
L17

M

icroSeconds

-2.0 -1.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0

Sync = SourceSync = Source

0.0

-

20.0

-40.0

IRE:FLT

V

ertical delta: -0.243 Volts

V

ertical delta: -0.243 Volts

F

rames selected:

F

rames selected:

11 22

525 line NTSC525 line NTSC Synchronous Synchronous
S

low clamp to 0.00 V at 6.72 uS

S

low clamp to 0.00 V at 6.72 uS

No Filtering No Filtering

APL = 52.7% APL = 52.7%

Field
T

oggle

Field
T

oggle

Find
Colorbars

Find
Colorbars

Vector
Line

Vector
Line

Field 1
Line 17

Field 1
Line 17

Field 1
Line 18

Field 1
Line 18

R-Y

B-Y

75%

100%

I

Q

-I

-Q

M

g

R

Yl

G

Cy

B

Setup 7.5%

APL = 42.4% APL = 42.4%

System LineSystem Line
Angle (deg) 0.0Angle (deg) 0.0
Gain x 1.178Gain x 1.178

1.425 dB1.425 dB

L 20 F2L 20 F2

B

urst from source

B

urst from source

5

25 line NTSC

5

25 line NTSC

R-Y

B-Y

75%

100%

I

Q

-I

-Q

M

g

R

Yl

G

Cy

B

Setup 7.5%

Auto
Scan

Auto
Scan

ExitExitManual

Steps 6

Manual
Steps 6

RefPacket

6.7uSec

RefPacket

6.7uSec

1st Step

10.7uSec

1st Step

10.7uSec

Last Step

25.8uSec

Last Step

25.8uSec

Measure
Cycles 6

Measure
Cycles 6

Measurement Location for the DGDP MeasurementMeasurement Location for the DGDP Measurement

u secu sec

5.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.05.0 10.0 15.0 20.0 25.0 30.0 35.0 40.0 45.0 50.0 55.0 60.0

Field = 1 Line = 16 FCC Composite

B

ertical interval test signals can be seen very clearly for additional analysis of the signal.

V
These can be printed as support documentation for automatic measurement results.

C

In Vector Mode, the VM700T becomes a digital vectorscope with an electronic graticule. A
“Color Bar Search’’ feature makes it easy to quickly display a line containing a color bar
test signal.

ven a single horizontal synchronization pulse can be displayed at a high intensity.

E

F

Main Measure Mode display of available measurements.

D

Picture Mode display. (Video courtesy of KOIN-TV, Portland, Oregon.) Measure Mode DGDP special position acquisition feature.

G

3

,2

0.0

10.0

20.0

30.0

40.0

5

0.0

60.0

70.0

80.0

90.0

100.0

1

10.0

120.0

0.0

10.0

20.0

30.0

40.0

5

0.0

60.0

70.0

80.0

90.0

100.0

1

10.0

120.0

Bar & LineTime (NTSC) Wfm --> Bar & LineTime (NTSC) Wfm -->

100 % = Bar Level100 % = Bar Level

FCC Composite

3

2 -> 32

B

ar Level = 93.5 IRE
(Ref. b1)

Bar Level = 93.5 IRE

(Ref. Back Porch)
Sync Level = 35.8 IRE
Sync to Bar Top = 129.3 IRE
Sync/Bar Ratio = 95.8 %

(100% = 4/10)
LineTime Dist. = 1.8 %

(

Rec. 567)

Bar Tilt = 1.2 %

(Rec. 569)
Bar Width = 18.0 u sec

Field = 1 Line = 16 Field = 1 Line = 16

A

verage

A

verage

Average
Num 32

Average
Num 32

Relative

to Ref

Relative

to Ref

ReferenceReference AcquireAcquire VITS

Search

VITS
Search

RescaleRescale

Chroma Gain (%)Chroma Gain (%)

Chroma Delay (n sec)Chroma Delay (n sec)

80.0

85.0

90.0

95.0

100.0

105.0

110.0

115.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

80.0

85.0

90.0

95.0

100.0

105.0

110.0

115.0

-60.0 -40.0 -20.0 0.0 20.0 40.0 60.0

Chrom/Lum Gain Delay (NTSC) Wfm --> Chrom/Lum Gain Delay (NTSC) Wfm --> FCC Composite

32 -> 32

Field = 1 Line = 16 Field = 1 Line = 16

Average Average

Chroma Gain = 85.3 %
Chroma Delay = 9.3 n sec

MEASURE MODE

1

BAR LINE TIME

bsolute Relative

easurement Range Mode Mode

M

ar Level 50 to 200 IRE ±0.5% ±0.2%

B

ync Level 20 to 80 IRE ±0.5% ±0.2%

S

ync to Bar Top 70 to 280 IRE ±0.5% ±0.2%

S

Sync/Bar Ratio 10% to 125% ±0.5% ±0.2%

00% nominal

1

Bar Tilt (Rec 569) 0 to 20% ±0.2% ±0.1%

Line Time Distortion 0 to 20% ±0.2% ±0.1%

Rec 567)

(

Bar Width 10 µS to 30 µS ±100 nS NA

H

A

ccuracy Accuracy

A

HROMINANCE TO LUMINANCE GAIN AND DELAY

C

bsolute Relative

Measurement Range Mode Mode

A

ccuracy Accuracy

A

Chrominance to Luminance Delay ±300 ns ±5 ns ±1.0 ns

Chrominance to Luminance Gain Ratio 0 to 160% ±1.0% ±0.1%

I

hrominance to Luminance Gain and Delay measurement.

C

Bar Line Time measurement.

BOUNCE

Measurement Range Accuracy

Peak Deviation 0 to 50% ±1%

Settling Time 0 to 10 sec ±100 msec

BURST FREQUENCY

Measurement Range Relative Mode Accuracy

Burst Frequency Error ±100 Hz ±0.5 Hz

1

All accuracies for measur

2

All accuracies for measurements with relative to reference mode assume an average of 256 was used to

eate the r

cr

3

Requires a reference signal.

4

ence.

efer

3

ements with averaging capabilities assume the default average of 32.

CHROMINANCE FREQUENCY RESPONSE

Measurement Range Mode Mode

Reference Amplitude 0 to 100 IRE ±1% ±0.5%

Frequency Response 0 to 100 IRE ±1% ±0.5%

Absolute Relative

Accuracy Accuracy

CHROMINANCE NOISE

Measurement Range Absolute Mode Accuracy

AM Noise –20 to –80 dB ±1 dB (–20 to –60 dB)

PM Noise –20 to –70 dB ±1 dB (–20 to –60 dB)

MEASURE MODE (continued)

Chrominance Amplitude Error (%) Ref = 40 IRE PacketChrominance Amplitude Error (%) Ref = 40 IRE Packet

Chrominance Phase Error (deg) Ref = 40 IRE PacketChrominance Phase Error (deg) Ref = 40 IRE Packet

Chrominance Luminance Intermodulation (% of 714 mV)Chrominance Luminance Intermodulation (% of 714 mV)

20 IRE20 IRE 40 IRE40 IRE 80 IRE80 IRE

-0.06

-0.04

-0.02

0.00

0.02

0.04

-0.06

-0.04

-0.02

0.00

0.02

0.04

-0.04

-0.02

0.00

-0.04

-0.02

0.00

0.00

0.05

0.10

0.00

0.05

0.10

C

hrominance Nonlinearity (NTSC) Wfm -->

C

hrominance Nonlinearity (NTSC) Wfm --> NTC-7 Combination

2

56 -> 256

Field = 1 Line = 16 Field = 1 Line = 16

A

verage

A

verage

-0.0 0.0 -0.1

0

.0

0

.0

-

0.0

0.1 0.0 0.0

Luminance Level (IRE)Luminance Level (IRE)

Chrominance Level (IRE)Chrominance Level (IRE)

Chrominance Phase (deg)Chrominance Phase (deg)

Gray Gray Yellow Yellow Cyan Cyan Green Green MagentaMagenta Red Red Blue Blue Black Black

0.0

50.0

100.0

0.0

50.0

100.0

0.0

50.0

100.0

0.0

50.0

100.0

0.0

100.0

200.0

300.0

400.0

0.0

100.0

200.0

300.0

400.0

ColorBar (NTSC) Wfm --> ColorBar (NTSC) Wfm --> FCC Color Bar

32 -> 32

Field = 2 Line = 20 Field = 2 Line = 20

Average Average

94.0 68.0 55.8 48.7 37.0 29.5 16.9 9.3

0.4 49.9 73.6 68.6 70.1 77.3 53.9 0.5

------- 168.3 283.6 241.1 60.0 103.5 346.1 -------

Differential Gain (%)Differential Gain (%)

Differential Phase (deg)Differential Phase (deg)

1st. 1st. 2nd. 2nd. 3rd. 3rd. 4th. 4th. 5th.5th. 6th. 6th.

-15.0

-10.0

-5.0

0.0

5.0

-15.0

-10.0

-5.0

0.0

5.0

-0.4

-0.2

-0.0

0.2

0.4

-0.4

-0.2

-0.0

0.2

0.4

DG DP (NTSC) Wfm --> DG DP (NTSC) Wfm --> FCC Composite

3

2 -> 32

Field = 1 Line = 16 Field = 1 Line = 16

A

verage

A

verage

0.00 -0.61 -2.40 -5.40 -8.14 -12.18

min =-12.18 max = 0.00 p-p/max = 12.18

0.00 0.29 -0.11 -0.21 0.23 0.21

min = -0.21 max = 0.29 pk-pk = 0.50

CHROMINANCE NON-LINEARITY

easurement Range Mode Mode

M

hrominance Amplitude 0 to 100% ±0.4% ±0.2%

C

hrominance Phase 0 to 360 deg ±1 deg ±0.2 deg

C

hrominance to Luminance –50 to +50% ±0.2% ±0.2%

C

ntermodulation

I

4

bsolute Relative

A

Accuracy Accuracy

J

MPTE COLOR BARS NOMINAL VALUES

S

olor LUM (mV) Chroma P-P (mV) Phase (degrees)

C

ellow 494.6 444.2 167.1

Y

yan 400.4 630.1 283.4

C

reen 345.9 588.5 240.8

G

agenta 256.7 588.5 60.8

M

Red 202.2 630.1 103.4

Blue 108.1 444.2 347.1

IFFERENTIAL GAIN AND PHASE

D

bsolute Relative

Measurement Range Mode Mode

A

Accuracy Accuracy

Differential Gain 0 to 100% ±0.3% ±0.03%

Differential Phase 0 to 360 deg ±0.3 deg ±0.03 deg

Chrominance Non-Linearity measurement.

COLOR BAR

Measurement Range Mode Mode

Luminance Level 0 to 100 IRE ±0.5 IRE ±0.2%

(0 to 714.3 mV)

Chrominance Level 0 to 100 IRE ±1.0% of ±0.2%
(excluding gray and black) (0 to 714.3 mV) nominal

Chrominance Phase ±180 deg of ±0.5 deg of ±0.1 deg

nominal nominal

K

Color Bar measurement.

4

4

Accuracies for chrominance non-linearity amplitude and phase measurements assume an average of 256.

Absolute Relative

Accuracy Accuracy

Differential Gain and Phase measurement.

5

MEASURE MODE (continued)

Amplitude (dB)Amplitude (dB)

Group Delay (n sec)Group Delay (n sec)

(Ref. at 0.20 MHz)(Ref. at 0.20 MHz)

0.00.0 1.01.0 2.02.0 3.03.0 4.04.0 4.64.6

-0.20

-0.15

-0.10

-0.05

0.00

0.05

0.10

0.15

-0.20

-0.15

-0.10

-0.05

0.00

0.05

0.10

0.15

0.00.0 1.01.0 2.02.0 3.03.0 4.04.0 4.64.6

-10.0

-8.0

-6.0

-4.0

-2.0

0.0

2.0

4.0

6.0

8.0

-10.0

-8.0

-6.0

-4.0

-2.0

0.0

2.0

4.0

6.0

8.0

Group Delay & Gain (NTSC) Wfm -->Group Delay & Gain (NTSC) Wfm --> Sin X/X

32 -> 32

Field = 2 Line = 15Field = 2 Line = 15

AverageAverage

H

Timing Measurement RS-170A (NTSC)

H

Timing Measurement RS-170A (NTSC)

32 -> 32

5

.36 u sec

9

.0 cycles

37.3 IRE

3

5.7 IRE

4.64 u sec 1.78

u

sec

9.61 u sec

1

89 n sec

2

12 n sec

Field = 2 Line = 15 Field = 2 Line = 15

Average Average

Average
Num 32

Average
Num 32

Max HoldMax Hold Extract

VCR.HD.SW

Extract
VCR.HD.SW

Meas.Line
Start 20

Meas.Line
Start 20

Meas.Line
End 250

Meas.Line
End 250

RescaleRescale

LineLine

(n sec)(n sec)

-15.0 -10.0 -5.0 0.0 5.0 10.0 15.0-15.0 -10.0 -5.0 0.0 5.0 10.0 15.0

FF

FF

II

II

EE

EE

LL

LL

DD

DD

11

22

1111

525525

H Sync Jitter in a Frame (NTSC) H Sync Jitter in a Frame (NTSC)

32 -> 32

Jitter (Line 20 to 250) -- 4 n sec p-p

Average Average

FREQUENCY RESPONSE AND GROUP DELAY

bsolute Relative

easurement Range Mode Mode

M

requency Response ±40 dB ±1.0 dB ±0.3 dB

F

roup Delay ±1.0 µs ±20 ns ±5 ns

G

M

A

Accuracy Accuracy

ORIZONTAL TIMING

H

easurement Range Absolute Mode Accuracy

M

urst Level 10 to 80 IRE ±0.5%

B

orizontal Sync Rise and Fall Time 80 ns to 1 µs ±10 ns

H

orizontal Sync Width 3 to 7 µs ±10 ns

H

urst Width 6 to 13 cycles ±0.1 cycles (FCC)

B

ync to Burst Start (RS-170A) 4 to 10 µs ±150 ns

S

ync to Burst End (FCC) 4 to 10 µs ±25 ns

S

Front Porch 0.1 to 3.5 µs ±10 ns (FCC)

0.5 cycles (RS-170A)

±

10 ns (RS-170A)

±

Sync to Setup 8.8 to 13.0 µs ±10 ns

Breezeway (FCC) 0.1 to 5 µs ±25 ns

Sync Level 20 to 80 IRE ±0.5%

N

Frequency Response and Group Delay measurement using Sin X/X.

HORIZONTAL BLANKING

Measurement Range Absolute Mode Accuracy

Blanking Start 0.1 to 4.2 µs ±50 ns

Blanking End 6.8 to 12.2 µs ±50 ns

Blanking Width 6.9 to 16.4 µs ±50 ns

6

Horizontal Timing measurement.

INCIDENTAL CARRIER PHASE MODULATION

Measurement Range Accuracy

ICPM (requires zero Carrier Pulse 0 to 90 deg ±1.0 deg
and the quadrature output of the
demodulator on Channel C)

JITTER

ement

Measur

Jitter (2 Field) ±20 µs ±10 ns

Jitter Long Time ±20 µs ±10 ns

O

H_Jitter.

Range Absolute Mode Accuracy

MEASURE MODE (continued)

2T Pulse K Factor (NTSC) Wfm --> 2T Pulse K Factor (NTSC) Wfm --> FCC Composite

32 -> 32

EIA-2T 5.0% K-2T = 2.3 % KF

K-PB = -3.1 % KF
PB Ratio = 89.1 %
H

AD = 258.3 n sec

F

ield = 1 Line = 16

F

ield = 1 Line = 16

Average Average

107.3

91.6

84.0

86.0

88.0

90.0

92.0

94.0

96.0

98.0

100.0

102.0

104.0

106.0

108.0

110.0

112.0

107.3

91.6

84.0

86.0

88.0

90.0

92.0

94.0

96.0

98.0

100.0

102.0

104.0

106.0

108.0

110.0

112.0

IREIRE

Level Meter (NTSC) Wfm --> Level Meter (NTSC) Wfm --> FCC Composite

32 -> 32

#000

Level(b-a)
= 94.4 IRE

Field = 1 Line = 16 Field = 1 Line = 16

Average Average

(a) at 42.0 u sec, (b) at 53.2 u sec(a) at 42.0 u sec, (b) at 53.2 u sec

L

uminance Non Linearity (%)

L

uminance Non Linearity (%)

1st. 1st. 2nd. 2nd. 3rd. 3rd. 4th. 4th. 5th.5th.

8

0.0

82.0

8

4.0

86.0

88.0

90.0

9

2.0

9

4.0

9

6.0

98.0

100.0

1

02.0

104.0

106.0

8

0.0

82.0

8

4.0

86.0

88.0

90.0

9

2.0

9

4.0

9

6.0

98.0

100.0

1

02.0

104.0

106.0

L

uminance Non Linearity (NTSC) Wfm -->

L

uminance Non Linearity (NTSC) Wfm --> FCC Composite

32 -> 32

100.0 97.3 93.6 89.7 85.7

p

k-pk = 14.3

Field = 1 Line = 16 Field = 1 Line = 16

Average Average

(dB)(dB)

(MHz)(MHz)

-7.5

-7.0

-6.5

-6.0

-5.5

-5.0

-4.5

-4.0

-3.5

-3.0

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

-7.5

-7.0

-6.5

-6.0

-5.5

-5.0

-4.5

-4.0

-3.5

-3.0

-2.5

-2.0

-1.5

-1.0

-0.5

0.0

0.5

1.0

1.5

Multi Burst (NTSC) Wfm --> Multi Burst (NTSC) Wfm --> FCC Multi Burst

32 -> 32

-0.68

0.5

-2.28

1.3

-2.09

2.0

-1.15

3.0

-1.05

3.6

-5.48

4.1 1.25 3.58

60 % of 94.5 IREAmplitude (0 dB = Flag)

Field = 2 Line = 16 Field = 2 Line = 16

Average Average

K-FACTOR

easurement Range Absolute Mode Accuracy

M

T Pulse K-Factor 0 to 10% Kf ±0.3%

2

PB 10 to 5% KPB ±0.3%

K

ulse to Bar Ratio 10 to 125% ±0.7%

P

ulse Half Amplitude Duration (HAD) 100 to 500 ns ±5 ns

P

P

INE FREQUENCY

L

easurement Range Accuracy

M

ine Frequency ±3% ±0.1%

L

ield Frequency ±3% ±0.1%

F

LUMINANCE NON-LINEARITY

bsolute Relative

easurement Range Mode Mode

M

uminance Non-Linearity 0 to 100% ±0.4% ±0.2%

L

R

A

ccuracy Accuracy

A

K-factor measurement.

LEVEL METER

Measurement Range Accuracy

Level Meter 0 to 1.4 V ±3.5 mV

Q

Level Meter measurement.

5

Total Harmonic Distortion on packets must be ≤46 dB.

Luminance Non-Linearity measurement.

MULTIBURST

5

Absolute Relative

Measurement Range Mode Mode

Accuracy Accuracy

Reference Flag or Packet Amplitude 30 to 130 IRE ±1% NA

Other Packets –40 to +6 dB ±0.1 dB ±0.03 dB

S

Multiburst measurement.

7

MEASURE MODE (continued)

Amplitude (0 dB = 714 mV p-p)Amplitude (0 dB = 714 mV p-p)

(MHz)(MHz)

-85.0

-80.0

-75.0

-70.0

-65.0

-60.0

-55.0

-50.0

-45.0

-40.0

-35.0

-30.0

-25.0

-20.0

-15.0

-10.0

-5.0

0.0

5.0

10.0

1.0 2.0 3.0 4.0 5.0

-85.0

-80.0

-75.0

-70.0

-65.0

-60.0

-55.0

-50.0

-45.0

-40.0

-35.0

-30.0

-25.0

-20.0

-15.0

-10.0

-5.0

0.0

5.0

10.0

1.0 2.0 3.0 4.0 5.0

Noise Spectrum (NTSC) Wfm --> Noise Spectrum (NTSC) Wfm --> Pedestal

3

2 -> 32

Cursor1 0.81 MHz(+-28 kHz Band) -52.3 dB p-p
Cursor2 4.50 MHz(3.69 MHz above) -60.7 dB p-p ( -8.4 dB Diff)
Noise Area in Cursors -50.2 dB rms

Noise Level = -49.1 dB rms

Band width 10kHz to Full Band width 10kHz to Full

Field = 2 Line = 13 Field = 2 Line = 13

A

verage

A

verage

Source
Only

Source
Only

Source and
Chan. A

Source and
Chan. A

Source and
Chan. B

Source and
Chan. B

180

170

160

150

140

130

120

1

10

100

90

80

7

0

60

50

40

30

20

10

0

-10

-20

-30

-40

-50

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-170

S

CH Phase Measurement

S

CH Phase Measurement

5

25 line NTSC

5

25 line NTSC

C

h B SCH -62.1 deg

Ch A SCH -61.0 deg

R

el Burst 24.3 deg

Rel Sync -17 nsec

Color Frame Derived
from Channel A SCH

Sync Relative Timing (nsec)

1000-1000 100-100 10-10 0

Burst Relative Phase (deg)

180-180 30-30 10-10 3-3 0

Average Off

Field 1Field 1 Field 2Field 2

VITS Identification (NTSC) VITS Identification (NTSC)

Line 15 --> Chroma Freq Resp Line 15 --> Chroma Freq Resp

>> Line 16 --> NTC-7 Combination Line 16 --> NTC-7 Combination >>

Line 17 --> FCC Multi Burst Line 17 --> FCC Multi Burst

>>

Line 18 --> FCC Composite Line 18 --> FCC Composite

>>

Line 19 --> VIRS Line 19 --> VIRS

>>

Line 20 --> Pedestal Line 20 --> Pedestal

>>

Line 15 --> Sin X/X Line 15 --> Sin X/X

>> Line 16 --> Pedestal Line 16 --> Pedestal >>

Line 17 --> Luminance Bar Line 17 --> Luminance Bar

>>

Line 18 --> NTC-7 Composite Line 18 --> NTC-7 Composite

>>

Line 19 --> VIRS Line 19 --> VIRS

>>

Line 20 --> Pedestal Line 20 --> Pedestal

>>

Field = 1 Line = 16 NTC-7 Combination

Full DisplayFull Display

F1F1

F2F

2

F3F

3

F4F

4

Vertical Blanking (NTSC) Vertical Blanking (NTSC)
Field = 1 Line = 16 Field = 1 Line = 16 Field = 1 Line = 16 Field = 1 Line = 16

Blanking
Display

Blanking
Display

Equalizer
Pulse

Equalizer
Pulse

Serration
Pulse

Serration
Pulse

V Sync
Display

V Sync
Display

Average
Num 32

Average
Num 32

RescaleRescale

Timing DisplayTiming Display

Vertical Blanking (NTSC) Vertical Blanking (NTSC)

4.78 u sec

4.58 u sec

193 n sec

208 n sec

Average Off Average Off

NOISE SPECTRUM

easurement Range Absolute Mode Accuracy

M

nweighted Signal-to-Noise Ratio –20 to –80 dB ±0.4 dB

U

5 MHz Low Pass) (–20 to –60 dB)

(

Weighted Signal-to-Noise Ratio –20 to –80 dB ±1.0 dB
(5 MHz Low Pass and (–20 to –0 dB)

nified Weighting) ±2.0 dB

U

1.0 dB

±
(–60 to –70 dB)

–60 to –70 dB)

(

V

T

Noise Spectrum measurement.

SCH PHASE

Measurement Range Absolute Mode Accuracy

SCH Phase ±90 deg ±5 deg

Sync Timing ±1 µS ±10 nS

Burst Timing ±180 deg ±5 deg

VITS ID display.

VERTICAL BLANKING

Measurement Range Absolute Mode Accuracy

Equalizing Pulse Width 80 ns to 1 µs ±10 ns

Serration Pulse Width 80 ns to 1 µs ±10 ns

W

Vertical Blanking display.

U

SCH Phase measur

8

ement.

X

Vertical Blanking Serration Pulse measurement.

AUTO MODE

RS-170A HORIZONTAL BLANKING INTERVAL TIMING MEASUREMENTS

easurement Range Accuracy Test Signal

M

Color Burst Width 6 to 13 cycles ±0.1 cycles Horizontal Blanking

Front Porch Duration 0.5 to 2 µs ±20 ns Horizontal Blanking

Horizontal Blanking Width 6 to 30 µs ±50 ns Horizontal Blanking

orizontal Sync Rise 80 to 120 ns –10 to +30 ns Horizontal Blanking

H
Time and Fall Time 120 to 300 ns ±20 ns

Horizontal Sync Width 1 to 8 µs ±10 ns Horizontal Blanking

SCH Phase ±90 deg ±5 deg Horizontal Blanking

Sync to Setup 5 to 18 µs ±20 ns Horizontal Blanking

ync to Start of Burst 4 to 8 µs ±140 ns Horizontal Blanking

S

RS-170A VERTICAL BLANKING INTERVAL

Measurement Range Accuracy Test Signal

qualizing Pulse Width 1 to 20 µs ±10 ns Vertical Blanking

E

erration Width 1 to 20 µs ±10 ns Vertical Blanking

S

ertical Blanking Width 19 to 29 lines –0.1 lines to Vertical Blanking

V

FCC HORIZONTAL BLANKING INTERVAL TIMING MEASUREMENTS

Measurement Range Accuracy Test Signal

Breezeway Width 0.2 to 3.5 µs ±25 ns Horizontal Blanking

Color Burst Width 6 to 13 cycles ±0.1 cycles Horizontal Blanking

Front Porch Duration 0.5 to 2 µs ±10 ns Horizontal Blanking

Horizontal Blanking Width 6 to 30 µs ±10 ns Horizontal Blanking

Horizontal Sync Rise Time 80 to 120 ns –10 to +30 ns Horizontal Blanking
and Fall Time 120 to 300 ns ±20 ns

Horizontal Sync Width 1 to 8 µs ±10 ns Horizontal Blanking

Sync to Setup 5 to 18 µs ±20 ns Horizontal Blanking

Sync to End of Burst 6 to 15 µs ±20 ns Horizontal Blanking

FCC VERTICAL BLANKING INTERVAL TIMING MEASUREMENTS

ement Range Accuracy Test Signal

Measur

Equalizing Pulse Width 25 to 100% ±0.3% Vertical Blanking

Serration Width 1 to 20 µs ±10 ns Vertical Blanking

tical Blanking Width 19 to 29 lines –0.1 lines to Vertical Blanking

er

V

AMPLITUDE AND PHASE MEASUREMENTS

ement Range Accuracy Test Signal

Measur

verage Pictur

A

Bar Top 0 to 90% of ±0.1% FCC/NTC-7 Composite

Bar Amplitude 0 to 200 IRE ±0.3 IRE FCC/NTC-7 Composite

Chrominance to ±300 ns ±5 ns FCC/NTC-7 Composite
Luminance Delay
(Relative Chroma Time)

ominance to

Chr
Luminance Gain
(Relative Chroma Level)

fer

Dif

e Level (APL)

ential Gain

00 ns to 1.0 µs ±30 ns

3

(0.5 cycles)

20 ns

±

+0.2 lines

300 ns to 1.0 µs ±30 ns

of nominal
horizontal sync
pulse width

+0.2 lines

3.0% Full Field

0 to 200%

Maximum Car

0 to 160%

0 to 100%

±

rier

1% FCC/NTC-7 Composite

±

±0.3% FCC/NTC-7 Composite

MPLITUDE AND PHASE MEASUREMENTS (continued)

A

easurement Range Accuracy Test Signal

M

ifferential Phase 0 to 360 deg ±0.3 deg FCC/NTC-7 Composite

D

uminance Non-linear 0 to 50% ±0.4% FCC/NTC-7 Composite

L

istortion

D

elative Burst Gain ±100% ±0.3% FCC/NTC-7 Composite

R

elative Burst Phase ±180 deg ±0.3 deg FCC/NTC-7 Composite

R

urst Amplitude 25 to 200% ±1.0% Horizontal Blanking

B

% of sync) of sync

(

urst Amplitude 10 to 80% of Bar ±0.4% Horizontal Blanking

B

% of Bar) (10 to 80 IRE when (±0.4 IRE)

(

Sync Amplitude 20 to 80% of Bar ±0.3% Horizontal Blanking
(% of Bar) (20 to 80 IRE when (±0.3 IRE)

lanking Level 0 to 90% of ±0.2% Horizontal Blanking

B

ync Variation 0 to 50% of ±0.3% for Horizontal Blanking

S

Blanking Variation 0 to 50% of ±0.3% for Horizontal Blanking

Bar is not used)

ar is not used)

B

aximum Carrier

M

aximum Carrier Zero Carrier

M
(0 to 50% of Bar (±0.3% for Bar
when Zero Carrier and ±0.3 IRE

s not used and for no Zero

i

to 50 IRE when Carrier and

0
Zero Carrier and no Bar)
Bar are not used)

aximum Carrier Zero Carrier

M

0 to 50% of Bar (±0.3% for Bar

(

hen Zero Carrier and ±0.3 IRE

w

s not used and for no Zero

i
0 to 50 IRE when Carrier and
Zero Carrier and no Bar)
Bar are not used)

FREQUENCY RESPONSE MEASUREMENTS

Measurement Range Accuracy Test Signal

Multiburst Flag 0 to 90% of ±0.5% for FCC Multiburst or
Amplitude Maximum Carrier Zero Carrier NTC-7 Combination

Multiburst Packet 0 to 100% of Flag ±1% of Flag FCC Multiburst or
Amplitudes NTC-7 Combination

(20 to 130% of (±0.5% for Bar
Bar when Zero and ±0.5 IRE
Carrier is not used for no Zero
and 20 to 130 IRE Carrier and
when Zero Carrier no Bar)
and Bar are
not used)

INCIDENTAL CARRIER PHASE MODULATION

Measurement Range Accuracy Test Signal

es Zero 0 to 30 deg ±1.0 deg FCC or NTC-7

equir

ICPM (r
Carrier Pulse and the

e output of the

quadratur
demodulator on
channel C)

Composite

COLOR BAR MEASUREMENTS

Measurement Range Accuracy Test Signal

Color Bar Amplitude Er

Color Bar Phase Er

Color Bar Chr
Luminance Gain Ratio

rors ±100% of nominal ±1.0% FCC Color Bars

rors ±180 deg from ±0.5 deg FCC Color Bars

ominance to

nominal

0 to 200% of ±2% FCC Color Bars
nominal

9

A

0

–

55

08

MHz

dBV

–5

–10

–15

–

20

–25

–30

–35

–40

–45

–50

1234567

0

–14

05

MHz

dBV

.5 1 1.5 2 3 4

–12

–10

–8

–6

–4

–2

2.5 3.5 4.5

0

–70

08

MHz

dBV

1234567

–60

–50

–40

–30

–20

–10

0

–14

0

MHz

dBV

.5 1 1.5 2 3 4

–12

–10

–8

–6

–4

–2

2.5 3.5 4.5

UTO MODE (continued)

UT-OF-SERVICE MEASUREMENTS

O

easurement Range Accuracy Test Signal

M

ield Time Distortion 0 to 40% ±0.5% Field Square Wave

F

WAVEFORM DISTORTION MEASUREMENTS

Measurement Range Accuracy Test Signal

ine Time Distortion 0 to 40% of Bar ±0.2% FCC or NTC-7

L

Composite

Pulse to Bar Ratio 10 to 125% ±0.7% FCC or NTC-7

Composite

Short Time Waveform 0 to 25% SD ±0.5% SD NTC-7 Composite

istortion (IEEE 511)

D

Chrominance Non-linear 5 to 35 IRE ±0.4 IRE NTC-7 Combination

ain Distortion (20 IRE chroma)

G

5 to 160 IRE

4
(80 IRE chroma)

hrominance Non-linear 0 to 360 deg ±1.0 deg NTC-7 Combination

C
Phase Distortion

Chrominance to ±50 IRE ±0.2 IRE NTC-7 Combination
Luminance Intermodulation

2T K-Factor 0 to 10% Kf ±0.3% Kf FCC or NTC-7

Composite

VIRS MEASUREMENTS

Measurement Range Accuracy Test Signal

VIRS Setup –20 to 130% of ±0.2% VIRS
(Reference Black) Bar (–20 to (±0.5 IRE

VIRS Chrominance 0 to 200% of ±1% VIRS
Reference Amplitude burst amplitude (±0.1% when

VIRS Chrominance Phase ±180 deg ±0.5 deg VIRS
Relative to Burst

VIRS Luminance Reference 30 to 100% of Bar ±0.2% VIRS

130 IRE when when Bar is
Bar is not used) not used)

(0 to 80% of Bar burst is not
when burst is not used and
used and 0 to ±1 IRE when
80 IRE when burst and Bar
burst and bar are not used)
are not used)

(30 to 100 IRE (±0.2 IRE)
when Bar is
not used)

Unified Unweighted filter response curve per CCIR Recommendation 567.

Unified Luminance weighted filter r

esponse curve per CCIR Recommendation 567.

SIGNAL-TO-NOISE RATIO MEASUREMENTS

Measurement Range Accuracy Test Signal

Unified Unweighted SNR

Unified Luminance 26 to 60 dB ±1.0 dB Quiet Line
Weighted SNR 61 to 70 dB ±2.0 dB

NTC 7 Unweighted SNR

NTC 7 Luminance 26 to 60 dB ±1.0 dB Quiet Line
W

eighted SNR 61 to 70 dB ±2.0 dB

Periodic SNR 26 to 60 dB ±1.0 dB Quiet Line

10

26 to 60 dB ±1.0 dB Quiet Line
61 to 70 dB ±2.0 dB

26 to 60 dB
61 to 70 dB

±1.0 dB Quiet Line

2.0 dB

±

61 to 70 dB ±2.0 dB

NTC 7 Unweighted filter response.

NTC 7 Luminance weighted filter response.

VM700T Video Measurement Set

hannel A System Default 07-Aug-96 19:19:46

C

System Default Violated Limits

Source ID ------ Not Found
Bar Top 0.5 % Carr ** 10.0 15.0
Blanking Level 71.7 % Carr ** 72.5 77.5
Bar Amplitude 97.7 IRE

ync Amplitude 38.9 % Bar

S
Blanking Variation 2.0 % Carr
Blanking Variation 2.8 % Bar
Sync Variation 2.5 % Carr
Sync Variation 3.5 % Bar
Burst Amplitude 99.6 % Sync
Burst Amplitude 38.8 % Bar

FCC H Blanking 10.98 us
FCC Sync Width 4.91 us
FCC Sync-Setup 9.60 us
FCC Front Porch 1.38 us * 1.40 -----­Sync to Burst End 7.97 us ** 5.00 7.90
Breezeway Width 0.57 us
FCC Burst Width 8.9 Cycles

ync Risetime 247 ns * 0 190

S
Sync Falltime 256 ns ** 0 250
RS-170A H Blanking 11.91 us ** 10.65 11.15
RS-170A Sync Width 4.65 us
RS-170A Sync-Setup 9.48 us
RS-170A Front Porch 1.50 us
Sync to Burst Start 5.33 us
RS-170A Burst Width 9.1 Cycles

V Blank 4 IRE F1 20.0 Lines
V Blank 4 IRE F2 20.1 Lines
V Blank 20 IRE F1 20.0 Lines * 20.1 20.9
V Blank 20 IRE F2 20.1 Lines
FCC Equalizer 51.3 % S.W.
FCC Serration 4.51 us
RS-170A Equalizer 2.26 us
RS-170A Serration 4.78 us

Line Time Distortion 1.6 % * 0.0 1.4
Pulse/Bar Ratio 96.6 %
2T Pulse K-Factor 1.6 % Kf
IEEE-511 ST Dist ------ % SD ** 0.0 3.0 No NTC-7 Comp VITS

S/N NTC7 Unweighted 51.6 db ** 57.0 ------ RMS
S/N NTC7 Lum-Wghtd 57.5 db RMS

S/N Unif Unweighted 51.4 db ** 57.0 ------ RMS
S/N Unif Lum-Wghtd 58.0 db RMS
S/N Periodic ------ db Random >> Periodic

S/N.2 NTC7 Unwghtd 51.9 db ** 57.0 ------ RMS
S/N.2 NTC7 Lum-Wghtd 57.1 db RMS
S/N.2 Unif
S/N.2 Unif Lum-Wghtd 57.7 db RMS

Chroma-Lum Delay -20.0 ns
Chroma-Lum

Differential Gain 10.69 % ** 0.00 10.00 At 33% APL
Differential Phase
Lum Non-Linearity 11.04 % ** 0.00 10.00 At 29% APL
Relative Burst Gain -2.91 % At 33% APL
Relative Burst Phase -5.90 Deg At 33% APL

FCC Multiburst Flag 101.4 % Bar
FCC MB Packet #1 57.0 % Flag** 57.1 63.0
FCC MB Packet #2
FCC MB Packet #3
FCC MB Packet #4 59.0 % Flag
FCC MB Packet #5 57.4 % Flag
FCC MB Packet

SCH Phase -47.8 Deg * -45.0 45.0

Field Time Dist ------

FCC Color Bars

Yellow -6.8 4.6 -10.1
Cyan -3.6 4.4 -7.2
Green -3.3 5.6 -8.0
Magenta -0.6 4.9 -5.6
Red -0.7 5.8 -8.5
Blue 1.0 5.3 -4.2

Unwghtd 51.8 db ** 57.0 ------ RMS

Gain

#6

Amplitude Error Phase Error Chr/Lum Ratio Error

( % ) ( Deg ) ( % )

VM700T Video Measurement Set

Lower Upper

89.5

1.26

51.4

53.8 % Flag** 54.8 65.6

33.1

% ** 93.0 107.0

Deg

56.2 64.2

**

% Flag

% Flag

** -3.00 3.00 Not Found

% Bar

At 33% APL

Measurement results are displayed in an easy-to-read format indicating the time, signal source, measurement, and whether the measured value exceeded caution (*) or alarm (**) limits.

11

Measurement Methods —
Auto-Mode

The following paragraphs
describe the measurement
methods for each measurement.

ach timing measurement

E
method is written for the FCC
method. If there is an RS-170A
method for that same measure-

ent, and the RS-170A method

m

iffers from the FCC method, the

d
RS-170A requirement is
enclosed within square brackets
in the FCC description.

Horizontal Interval Timing
Measurements

These timing measurements are
made within the active picture
area, averaging the results over
32 lines starting at line 50 and
skipping 1

-frame plus 5 lines for
each successive sample (i.e.,
average over line 50 of first field,
line 56 of second field, line 62 of
the third field, etc.).

Breezeway Width: Measured
from the 10% point on the
trailing edge of horizontal
sync (nominally –4-IRE) to the
leading half-amplitude point
of the burst envelope.

Color Burst Width: Measured
from the leading half-ampli­tude point on the burst enve­lope [leading zero crossing of
the first half-cycle of burst
that exceeds 50% of burst
amplitude] to the trailing half­amplitude point on the burst
envelope [trailing zero cross-

of the last half-cycle of

ing
burst that exceeds 50% of burst
amplitude].

Front Porch Duration:

Measured from the 10% point

n the trailing edge of setup

o
(+4 IRE nominally) to the 10%
[50%] point on the leading
edge of sync (nominally –4

20] IRE).

[

Horizontal Blanking Width:

Measured between the points

n the leading and trailing

o
edges of horizontal blanking
that are at an amplitude of
10% [50%] of sync above

lanking level (nominally +4

b
[+20] IRE).

Horizontal Sync Rise Time
and Fall Time:

Measured
between the 10% and 90%
points on the leading and
trailing edges of horizontal
sync, respectively (nominally
–4 IRE and –36 IRE).

Horizontal Sync Width:

Measured between the
10% [50%] points on the
leading and trailing edges
of horizontal sync (nominally
–4 [–20] IRE).

SCH Phase: Phase at the
middle of burst relative to
the 50% point on the sync
leading edge.

Sync to Setup: Measured from
the 10% [50%] point on the
leading edge of sync (nominal­ly –4 [–20] IRE) to the point
on the trailing edge of blank­ing that is equivalent to 10%
of sync (nominally +4 IRE).

Sync-to-Start-of-Burst:

Measured from the 50%
point on the leading edge
of sync (nominally –20 IRE)

o the leading zero crossing

t
of the first half-cycle of burst
that exceeds 50% of burst
amplitude.

Sync-to-End-of-Burst:

Measured from the 10%
point on the leading edge of

orizontal sync (nominally

h
–4 IRE) to the half-amplitude
point on the trailing edge of
the burst envelope.

Vertical Interval Timing

Equalizing Pulse Width:

Measured between the
10% [50%] points on the
equalizing pulse (nominally
–4 [–20] IRE).

Serration Width: Measured
between the 10% [50%]
points of serration (nominally
–4 [–20] IRE).

Vertical Blanking Width:

Measured between the points
on setup [active picture] at a
level equal to 10% [50%] of
sync amplitude (nominally
+4 [+20] IRE), where setup
[active picture] immediately
precedes and follows the
vertical blanking interval.

12

Color Bar Measurements

Color Bar Amplitude Error:

Measured as deviation of
the peak-to-peak amplitude

f each color bar from the

o
nominal value for that color
bar expressed as a percent
of the nominal value. Six

alues reported.

v

Color Bar Phase Error:

Measured as deviation of the

hase of each color bar from

p
the nominal phase for that
color bar, relative to burst
phase. Six values reported.

Color Bar Chrominance­Luminance Gain Ratio:

Measured as ratio of chromi­nance level to luminance level
of each color bar, relative to
the nominal ratio for each
color bar. Six values reported.

olor Amplitude Phase C/L Gain

C

llow 67.36% 167.59 deg 1.0092

Ye

Cyan 94.74% 283.54 deg 1.8045

Green 89.04% 240.67 deg 2.0123

Magenta 89.04% 60.67 deg 2.8957

Red 94.74% 103.54 deg 4.2106

Blue 67.36% 347.59 deg 8.1652

FCC Color Bars Nominal Values
(Source: FCC Rule 73.699, Figure 14).

Ratio

Amplitude and Phase Measurements
(FCC or NTC-7 Composite VITS)

Bar Top: Measured as the ratio
of the bar top to Zero Carrier
amplitude to the blanking (at
back porch) to the Zero Carrier
amplitude. Result expressed as
a percent of Max Carrier.

Bar Amplitude: Measured
from the reference blanking
level (at back porch) contained

ithin the test line to the level

w
at the center of the bar.

urst Amplitude:VITS not

B

required. Burst amplitude
must be at least 10 IRE.
Measured as peak-to-peak
amplitude of the color burst at

urst center.

b

Chrominance-Luminance

elay Inequality (Relative

D
Chrominance Time):

Measured
as the time difference between
the luminance component and
chrominance component of
the modulated 12.5T pulse.

Chrominance-Luminance
Gain Inequality (Relative
Chrominance Level):

Measured as the peak-to-peak
amplitude of the chr

ominance

component of the modulated

12.5T-pulse.

Differential Gain: Measured
as the absolute amplitude
difference between the smallest
and largest staircase chromi­nance packets. Result expressed
as a percent of the largest
packet amplitude.

Differential Phase: Measured
as the largest difference in
phase between any two
staircase chrominance packets.

Luminance Non-linear
Distortion:

Measured as the

difference between the largest

nd smallest step amplitudes

a
of the staircase at the center of
each step. Result expressed as
a percent of the largest step

mplitude difference.

a

Relative Burst Gain: Measured
as the difference between the

eak-to-peak amplitude of burst

p
and the staircase chrominance
packet located at blanking.
Result expressed as a percent

f the packet amplitude.

o

Relative Burst Phase:

Measured as the difference in
phase between the color burst
and the staircase packet
located at blanking.

Sync Amplitude: Measured
from the tip of the horizontal
sync pulse to blanking level.

Blanking Level: Measured as
the ratio of the blanking (at
back porch) to Zero Carrier
amplitude to the sync tip to
Zero Carrier amplitude. Result
expressed as a percent of
Max Carrier.

Sync Variation: Measured as
the peak-to-peak variation of
the horizontal sync pulse
amplitude within every third
line of a field.

13

Blanking Variation: Measured
as the peak-to-peak variation
of the blanking level within

very third line of a field.

e

Frequency Response Measurements

FCC Multiburst or NTC-7

(
Combination VITS)

Multiburst Flag Amplitude:

easured from back porch

M
blanking to the center point of
the flag top.

ultiburst Amplitude:

M

Measured as the peak-to-peak
amplitude of each of the
multiburst packets. Six results
reported.

Waveform Distortion Measurements
(FCC or NTC-7 Composite VITS)

Line Time Distortion:

Measur

ed as the peak-to-peak
amplitude change of the bar
top, excluding the first
microsecond and the last
microsecond.

Pulse-to-Bar Ratio: Measured
as the peak amplitude of the
2T pulse, expressed as a
percent of the bar amplitude.

Short-Time Waveform
Distortion:

Measured as a
weighted function of time, the
result is the peak deviation
from flatness within 1
microsecond of the center of a
bar transition. ANSI/IEEE
Std.-511-1979, Section 4.4,
Appendix B.

Chrominance Non-linear Gain
Distortion:

Measured as the
peak-to-peak amplitude of the
first (nominally 20 IRE) and
last (nominally 80 IRE)
chrominance packets in the
3-level chrominance signal,
referenced to the peak-to-peak
amplitude of the middle
packet (nominally 40 IRE).

Chrominance Non-linear
Phase Distortion:

Measured

as the difference between the

argest and the smallest

l
deviation in phase among the
3-level chrominance test signal
subcarrier packets.

Chrominance to Luminance
Intermodulation:

Measured

using the 3-level chrominance

est signal. Result is the maxi-

t
mum amplitude departure of a
filtered part of the luminance
pedestal from a part of the

edestal upon which no sub-

p
carrier has been superimposed.

2T Pulse K-factor: Measured
as the greatest weighted ampli­tude of a positive-going or
negative-going echo-term
half-wave which is within one
microsecond before the 2T
pulse leading edge half­amplitude point or within
one microsecond after the 2T
pulse trailing edge half-ampli­tude point. Result expressed as
a K-factor which is the ratio of
the weighted amplitude of the
echo-term half-wave to the
sampled amplitude of the
2T pulse.

VIRS Measurements

VIRS Setup (Reference Black):

Measured from the blanking
level included in the test
signal to setup level.

VIRS Chrominance Reference
Amplitude:

Measured as the
amplitude of the VIRS chromi­nance packet, expressed as a
percent of burst (or percent of
bar if no burst).

VIRS Chrominance Phase
Relative to Burst:

Measured as

the difference between the

IRS chrominance packet

V
phase and color burst phase.

IRS Luminance Reference:

V

Measured from the blanking
level included in the test
signal to luminance reference
level (nominally 50 IRE).

Signal-to-Noise Ratio Measurements

nweighted SNR:Measured as

U

the ratio of bar amplitude to
the unweighted rms amplitude
of the noise on a quiet line.

Luminance Weighted SNR:

Measured as the ratio of bar
amplitude to the luminance
weighted rms amplitude of the
noise on a quiet line.

Periodic SNR: Measured as
the ratio of bar amplitude to
the peak-to-peak value of the
periodic noise.

Out-of-Service Measurements

Long Time Distortion: Measured
as the peak overshoot and
settling time in a flat field test
signal switched from 10% to
90% APL in less than 10 µsec.

Field Time Distortion:

Measured as the peak-to-peak
amplitude change of the 100
IRE field squarewave top.
The first and last 250 µsec
are excluded. Expressed as
a percent of the field
squarewave amplitude.

14

ower Requirements

P

Mains Voltage Range — 87 Vac to 132 Vac or 174 Vac to 250 Vac.

ains Frequency — 47 Hz to 63 Hz.

M

Power Consumption — 250 Watts.

nvironmental

E

Operating Temperature Range — 0°C to 50°C ambient.

Physical Characteristics

Dimensions mm in

Width
Height 222 8.75
Depth 556 21.90

Weight Kg lb

Net ≈20 ≈45

483 19.00

Ordering
Information

VM700T
Option 01

NTSC Video
Measurement Set

dering, please use the nomenclature given here. The standard instrument is shipped as a rack mount product.

When or

Included Accessories

Instruction manual; 75 Ω terminators (3) 011-0102-00; power cord.

Additional Options

Option 11 — PAL Measurements

Option 01/11 — Dual Standard Measurements

Option 20 — Teletext Measurements

Option 21 — Camera Measurements

Option 30 — Component Measurements

Option 40 — Audio Measurement Module

Option 41 — 6 Channel Audio Measurement Module

Option 42 — Audio to Video Delay Measurement

Option 48 — GPIB Interface

Option 1C — Cabinet Version

Option 1G — Echo/Rounding Measurements

Option 1P — Printer

Option 1Z — Probe Adapter (067-1429-00)

Option 3Z — Probe Adapter (3 each of 067-1429-00)

VM700T Softwar

e Utilities

VMBKUP — VM700T Backup Utility

VMREMGR — Remote Graphics Software for the VM700T

VMT — VM700T Remote Control Software

Optional Accessories

VM7FC1 — Field installable conversion kit to conver

VM7FR1 — Field installable conversion kit to conver

t rack mount unit to cabinet.

t cabinet to rack mount unit.

15

C

ontact Tektronix:

ASEAN / Australasia / Pakistan (65) 6356 3900

ustria [phone]

alkan, Israel, South Africa and other ISE Countries+41 52 675 3777

B

razil & South America55 (11) 3741-8360

B

entral East Europe, Ukraine and Baltics+41 52 675 3777

C

entral Europe & Greece+41 52 675 3777

C

rance & North Africa+33 (0) 1 69 86 81 81

F

A

elgium07 81 60166

B

anada1 [phone]

C

enmark+45 80 88 1401

D

inland+41 52 675 3777

F

Germany [phone]

Hong Kong (852) 2585-6688

India (91) 80-22275577

Italy [phone]

Japan 81 (3) 6714-3010

Luxembourg [phone]

Mexico, Central America & Caribbean 52 (55) 56666-333

Middle East, Asia and North Africa [phone]

The Netherlands 090 02 021797

orway800 16098

eople’s Republic of China86 (10) 6235 1230

P

epublic of Korea82 (2) 528-5299

R

N

oland+41 52 675 3777

P

ortugal80 08 12370

P

ussia & CIS7 095 775 1064

R

South Africa [phone]

pain ([phone]

S

Sweden 020 08 80371

Switzerland [phone]

Taiwan 886 (2) 2722-9622

United Kingdom & Eire [phone]

USA 1 [phone]

For other areas contact Tektronix, Inc. at: 1 [phone]

Last Updated June 15 2005

For Further Information

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Copyright © 2005, Tektronix, Inc. All rights reserved. Tektronix products are covered by U.S. and for­eign patents, issued and pending. Information in this publication supersedes that in all previously
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