Tektronix WFM2300 Comment utiliser

WFM2300 and WFM2200A

Multiformat Multistandard Portable Waveform Monitors

ZZZ

Release Notes

This document supports software version 2.11.5.

www.tek.com

*P077087004*

077-0870-04

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TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

Contacting Tektronix

Tektronix, Inc.

14150 SW Karl Braun Drive

P.O. Box 500

Beaverton, OR 97077

USA

For product information, sales, service, and technical support:

In North America, call 1-800-833-9200.

Worldwide, visit www.tek.com to ﬁnd contacts in your area.

Release notes

This document describes the key features and known limitations of software

version 2.11.5 of the Tektronix WFM2300 and WFM2200A Multiformat,

Multistandard Portable Waveform Monitors.

Some of these notes apply only to instruments with speciﬁc options installed. You

can ﬁnd a list of available instrument options at www.tektronix.com.

New features

This release of the WFM2300 and WFM2200A software introduces the following

new features:

ASI signal monitoring

(WFM2300 Option ASI

only)

For the WFM2300 only, a new software option (ASI) is available which allows

you to monitor ASI video signal inputs as follows:

SDI/ASI Status display: When Option ASI is installed, the SDI Status

display is renamed to the SDI/ASI Status display. When an ASI signal source

is being monitored, the SDI/ASI Status display shows details of the ASI signal

as shown below, including Eye measurement results.

WFM2300 and WFM2200A Release Notes 1

Release notes

MPEG2 PID List display: When Option ASI is installed, the MEAS button

menu includes a new MPEG2 PID List display selection. The MPEG2 PID

List display shows the hierarchical structure of the elements in the MPEG2

transport stream. The colored LED icons next to each element in the stream

indicate the status of the selected TR 101-290 tests performed on that element.

Use the Error Log display to view the details of test results.

Moving Circle generator The Moving Circle feature has been reinstated in this software release. You

can use this feature as a method of identifying the signal source. The Moving

Circle feature can be conﬁgured to use a horizontal, vertical, or random

motion.

2 WFM2300 and WFM2200A Release Notes

Release notes

General limitations

This release has the following general limitations. Topics are listed in alphabetical

order.

Audio If a video signal is connected to and disconnected from the MULTI IN

input, or a low amplitude LTC signal is applied to the MULTI IN input, the

instrument may record a false alarm on the SDI A input signal.

If you notice that the lissajous gain on the Audio display is not constant during

normal operation, you can remedy the situation using one of the following

methods:

Disconnect and reconnect the cable from the audio source

Toggle the Audio display back and forth between full-screen and four-tile

mode

Change another trace display to a non-trace display and then back again

High headphone volume levels can cause clipping with high audio level

programs. To prevent possible ear damage, it is recommended to lower the

volume before connecting headphones to the instrument.

Test tone generation from AES output will be muted for a moment

when the input video channel is switched or input video signal is

connected/disconnected.

A/V delay measurement

(Option AVDP only)

The A/V delay measurement may produce CRC errors and audio glitches in

sequence when Dolby E audio generation is enabled. Since it can be very

difﬁcult to detect the start of Dolby E audio, we recommend that you use

standard PCM embedded or AES audio to make the A/V delay measurement.

When embedded audio is enabled in the SDI output, the sum of all audio

channels is used to measure the A/V delay.

Cable length measurement Be sure to use Belden 8281 cable to calibrate the cable length measurement.

To prevent erroneous results in subsequent cable length measurements, use

the Physical Layer Settings submenu in the CONFIG menu to select the

cable type that best matches the cable you are using for the cable-length

measurements. If the Cable Type setting does not match the cable type that

you are using, the measurement results will be erroneous.

Displays The instrument is capable of showing only two of the following displays at a

time: Waveform, Vector, Lightning, Arrowhead, Diamond, Split Diamond,

Bowtie, Datalist, Eye, and Timing Measure. A warning messages appears

when you try to open more than two of these displays.

WFM2300 and WFM2200A Release Notes 3

Release notes

External reference

waveform display

The waveform in the external reference Waveform display may appear

garbled if there is no SDI input and you select to view a sync signal connected

to the REF IN input. If this occurs, connect an SDI input or cycle the power

to ﬁx the display of the waveform.

Generator SDI generator output occasionally becomes invalid on toggling output

formats. You may toggle to another format and back in case.

If the AES output is conﬁgured to output a Dolby E program, then the SDI

Output mode needs to be set to Test Signal (not Loopout Follows Input). If

this condition is not met, then the Dolby E content in the AES output may not

be able to be decoded.

The Dialnorm readout on Audio Generator Status display does not always

match the actual generator output as conﬁgured by the user. For example, if

the user conﬁgures the Dolby-E generator to output a program with –18 dBFS

signal levels (which has a dialnorm value of -23) and then reconﬁgures the

system to output a program with -20 dBFS levels (which has a dialnorm value

of –24) , the dialnorm value reported on the Audio Generator Status screen

may remain at -23 when it should actually be shown as –24.

Changing the Dolby E program conﬁguration setting in the Audio Generator

display may cause the Dolby guardband number to disappear in the Audio

display. To redisplay the guardband number on the Audio display, select the

Audio display and change it to full-screen mode.

Genlock If the reference frequency error is greater than 80 ppm, then the lock indicator

may falsely indicate that the instrument is locked. In this case, the SDI OUT

can be temporarily connected to the SDI input and the actual lock condition

can be viewed on the Timing display using external reference.

HDMI signal monitoring

(Option SFP-HDMI only)

When you are using the HDMI input to monitor 625i format signals, a Field

Length error may be reported on the Video Session display.

When you are using the HDMI input to monitor 1080p/sf format signals in

the range of 23.98 to 30 Hz or if you are monitoring 3G Level B signals, the

signal may be detected as being 3G Level A format.

Input timing to external

reference measurement

The Input Timing to External Reference measurement display may be unstable

when a 3G-SDI Level A input is being selected with a tri-level external

reference signal.

4 WFM2300 and WFM2200A Release Notes

Release notes

LTC Waveform Display The LTC waveform trace occasionally appears to be smeared and noisy. This

erroneous trace pattern will be displayed regardless of whether an LTC signal

is applied to one of the inputs or not. This problem can be remedied by

connecting a valid external reference signal to the product (such as NTSC,

PAL, or Tri-Level Sync), otherwise the unit requires power cycle.

MPEG2 PID List display

(WFM2300 Option ASI only)

The highlighted (selected) PID position in the stream hierarchy may not be

retained when the display has been changed to a different display and then

back to the MPEG2 PID List display.

For some transport streams, the TSDT table is not listed in the stream

hierarchy but is instead displayed as a GHOST with PID value 0x2. In

addition, the NULL PID with value 0x1FFF is not displayed.

For streams with two NIT tables, only the second table ID is initially shown in

the PID List hierarchy. The work around is to use the MEAS button menu to

reset the monitoring session. After the reset, both NIT tables will appear in

the PID List hierarchy.

The PIDs for EMM and ECM elements are not speciﬁcally identiﬁed in PID

List display and are instead shown as GHOST PIDs.

The order of the PIDs for elementary stream elements may be varied.

MULTI IN input source

selection

When the Input Mode setting for the MULTI IN connector is conﬁgured for

an LTC or AES signal, the video trace displays (Waveform, Vector, Diamond,

etc.) and the Picture display are not available. If one of the unavailable

displays is selected, a pop-up message appears stating that the display is not

available and that the selected input is not set for video.

When the MULTI IN input mode is changed to AES or LTC, the instrument

responds as follows:

When set to AES, the instrument switches to monitor AES audio.

When the MULTI IN input is then set to LTC, AES, SDI, or SDI/ASI

(Option ASI only), the instrument then changes back to the previous

audio monitoring selection.

When set to LTC, the instrument switches to using the LTC timecode on

the input signal. When the MULTI IN input is then set to AES, SDI, or

SDI/ASI (Option ASI only), the instrument then changes back to the

previous time-of-day source.

WFM2300 and WFM2200A Release Notes 5

Release notes

Propagation Time

measurement

(Option AVDP only)

When the Propagation Time measurement is initiated, it often takes 3 to 5

pulses of the measurement test pattern before a stable, valid measurement

can be made (each pulse occurs about once every 10 seconds). During this

settling period, the measurement readout sometimes reads “Invalid.” When

performing this measurement, you should wait for a few pulses to make sure

that the measurement has been done correctly.

When the Propagation Time measurement is made using a 3G-SDI Level B

signal, the measurement readout may show an erroneous result. It is

recommended that you use a different format, such as a 3G-SDI Level A

signal, to perform the measurement.

SDI Status display The SDI Status display may show an incorrect value for the source level and

cable parameters when the MULTI IN input is being monitored.

USB Always press the MAIN button and select USB Status > Unmount before you

remove the USB memory device from the USB port. You risk permanent loss

of any ﬁles saved on the USB device if you do not use the “Unmount” feature.

It is recommended that you use a well known brand to prevent a slow

instrument boot-up and/or response.

Web browser We recommend using Java Runtime Engine (JRE) version 1.6 or above.

6 WFM2300 and WFM2200A Release Notes

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