background image

 

23

Application - Useful for testing pixel anomolies and chrominance.

PulseBar

Description - The image looks like two vertical lines followed by a wide vertical bar on a display’s 

screen. The first line is a red pulse. The pulse is 20 T for PAL and 12.5 T for NTSC formats. The second 

narrower line is a 2 T white sine-squared pulse. T = 100 nSec for PAL and 125 nSec for NTSC formats. 

The wide bar is white with sine-squared edges.

Application - This image is intended for TV formats, but can be displayed with any format up to 100 

MHz.

Burst

Description - The left side starts with reference white  and black levels. This is followed by six bursts 

of square waves. Each burst is at a different frequency, forming vertical lines of various widths. The 

frequencies, going from left to right, are 0.5, 1, 1.53, 2.04, 3.06 and 6.13MHz.

Application - The image can also be used with a TV waveform analyzer to check the frequency re-

sponse of a video system. One scan line of the image, as it would appear on a waveform analyzer. High 

frequency roll-off (loss) would show up as a decrease in the peak-to-peak swings on the right side of the 

waveform. Low frequency roll-off would show up as a decrease in the peak-to-peak swings on the left 

side of the waveform.

Pattern Descriptions

www.

.com

[email protected]

1.800.561.8187

Содержание 00-00206

Страница 1: ...700A Series Portable Video Test Generators Quick Start Guide www com information itm com 1 800 561 8187 ...

Страница 2: ...ng Generator 9 Adjusting Horizontal Scan Frequency 11 Detecting Formats Supported by a Monitor 12 Using Test Sequences 13 Testing Audio 15 Testing HDCP Interfaces 15 Generating Psuedo Random Noise 16 Using Video Generator Manager 17 Creating Video Formats 18 Modifying Test Sequence 19 Pattern Descriptions 20 Updating Firmware 24 Specifications 25 Service and Support Contacts 26 www com information...

Страница 3: ...or All batteries in the generator must be the same type The supplied batteries may not come fully charged Use the supplied AC charger to charge the batteries for at least 18 hours The AC adaptor may be used to operate the generator and to recharge the batter ies at the same time With fully charged batteries the generator should operate for about 8 hours using VESA mode Using the LCD backlight DVI ...

Страница 4: ...4 Computer Interfaces DVI interface on 700A outputs analog signals only using included DVI to VGA adaptor Active on 701A only SDI HD SDI www com information itm com 1 800 561 8187 ...

Страница 5: ...5 User Interface LCD Display The LCD window displays messages and menu options Function Buttons www com information itm com 1 800 561 8187 ...

Страница 6: ... video signals per HDTV standards HD SDI Digital video signals 701A only USER User defined formats of any type stored in non volatile memory Selecting Formats Press the Format button to select from a list of video formats of the type selected from the Signal Type menu Reloading Standard Formats If you modify or delete standard formats you can restore the original formats by reloading the standard ...

Страница 7: ...tputs and to switch sync types Note Color gating works for all images except Ramp Selecting Images Press the Image button to select from list of available test images patterns You cannot modify the images or add your own images www com information itm com 1 800 561 8187 ...

Страница 8: ...When the Power Save preference is on and the generator is on battery power the generator will turn off after 30 minutes of no front panel activity If the generator is running a test sequence in Burn in mode the Power Save preference is ignored To set the Power Save preference select Options Pwr Save www com information itm com 1 800 561 8187 ...

Страница 9: ...tions WARNING Recalling the original factory calibration settings is not possible after saving your own settings Equipment Needed for Calibration DC voltmeter capable of measuring from 0 to 1 volt with a minimum resolution of 2 millivolts Precision 75 ohm 1 input terminator for the voltmeter Test cable to connect the voltmeter to the R G B and ground pins on the VGA connector Oscilloscope with a p...

Страница 10: ...4 and 5 for the green and blue outputs 7 Select Save 8 Select Options Calibrate Zero 9 Connect the red output to the positive input of the voltmeter 10 Select R_Zero or R_Zero to set the DC output level to 0 mV 3 mV 11 Repeat steps 9 and 10 for the green and blue components 12 Select Save 13 Select Options NTSC_CAL 14 Adjust the oscilloscope s timebase and sweep trigger to view the entire waveform...

Страница 11: ...er 2 Locate the J10jumper which is near the lower right corner of the board 3 Connect the jumper to only one pin to disable user calibration Connect both bins to enable user calibration 4 Install the back cover Adjusting Horizontal Scanning Frequency Select Test Freq Shift and then press the buttons to increase or decrease the horizontal scan ning frequency of the current video format 10 in 2 incr...

Страница 12: ...names select the Details option after the generator completes reading the EDID Extended Display Identification Data data The display s EDID data may include non VESA formats which are not listed You cannot select formats from this list but the DDC Step feature can be used to test the listed formats page 14 Detecting Formats Supported by a Monitor www com information itm com 1 800 561 8187 ...

Страница 13: ...ch specifies a series of format and image combinations To run the test sequence select Test Sequence Run and then press the buttons to step through the sequence Use the menu buttons to gate video color information change sync types and turn all signal outputs on and off You can use VGM to modify the test sequence see page 19 www com information itm com 1 800 561 8187 ...

Страница 14: ...t Sequence for DDC Displays If the generator is connected to a VESA DCC compliant display press the Learn Monitor and then Test DDC Step to setup a test of each format supported by the display Press the button to render the current image with each video format supported by the display Press the button to render all images at the current format Select the Run option to automatically test all images...

Страница 15: ...or with the DVI connector of the device under test 2 Choose a DVI video format supported by the device 3 Press Test HDCP Start to output HDCP encrypted content The display on the generator indicates if the test passed or failed If the test passed the currently selected pattern is displayed on the device under test Noise is displayed if the HDCP authentica tion failed After the initial authenticati...

Страница 16: ...eudo random noise standard press Test PR Noise to output the noise pattern as a static image Depending on how the device is designed it may compare the pattern output by the generator with an identical pattern created internally to detect errors in the cable and in the device itself www com information itm com 1 800 561 8187 ...

Страница 17: ...sing a null modem serial cable Note You may not be able to connect to the generator when it is Power Save mode 2 Start VGM and then select Generator Connect 3 In the Select Port dialog box select the Serial option and then click OK The name of the connected generator is listed in the bottom half of the VGM window 4 Click the View Formats icon to view the formats available in the generator and then...

Страница 18: ...t by name The integer portion of the field defining the horizontal size in millimeters specifies the storage location of the format in the generator The physical size entries have no affect on how test images are displayed on the 700A series For example if you want to save the new format in the location empty35 you would enter 35 to the left of the decimal point in the field for the horizontal siz...

Страница 19: ...rator list Do not select the virtual generator 5 Modify the test sequence VGM help describes the basic operation of the Sequence editor Specify only a format and image for each step Do not use the No Change value The 700A Series generators do not support the output gating and sync options and the No Change value 6 Select Edit Edit Sequence Name to save the sequence as a new sequence file 7 Select ...

Страница 20: ... fringes of other colors Overscan Description The image has three parts The first part consists of five white circles A large circle is drawn in the center of the screen Its diameter equals the lesser of the video height or width of the display A circle also is drawn in each of the corners of the screen The diameter of the corner circles equals one fifth of the display width The second part of the...

Страница 21: ...indow Description Single white box in the center of active video The size of the box is one third the width and height of the active video area Application Use for brightness control adjustment Focus Description This image fills the screen with white M characters Application Used for testing focus ColorBar Description The image has 7 full height vertical color bars Application Useful for verifying...

Страница 22: ...me time Small dots displayed on a misconverged monitor appear as a group of multi colored dots SMPTEBar Description The image s upper 67 of the image consists of a series of color bars These bars match the order of the bars in the SMPTE and EIA patterns The left side of the lower 25 of the image contains isolated I and Q color difference signals that match the original EIA and SMPTE patterns The I...

Страница 23: ...e left side starts with reference white and black levels This is followed by six bursts of square waves Each burst is at a different frequency forming vertical lines of various widths The frequencies going from left to right are 0 5 1 1 53 2 04 3 06 and 6 13MHz Application The image can also be used with a TV waveform analyzer to check the frequency re sponse of a video system One scan line of the...

Страница 24: ...ant Note You must connect to the generator and obtain an R prompt before you attempt the download 4 Turn OFF the generator 5 Hold down the upper left menu button and then press the On Off button The LCD screen will indi cate that the generator is ready for the upload 6 If necessary expand the zip archive file that contains the firmware update 7 In HyperTerminal select Transfer Send Text File 8 In ...

Страница 25: ... Encoding RGB 4 4 4 with 8 bits component TMDS differential swing 150 1560 mVp p programmable Digital Video Pixel rate Single link 75 MHz Audio Outputs Connecter 3 5 mm stereo phone jack Signals Left 1 KHz tone Right 2 KHz tone User Interface Display 4 x 20 character backlit LCD Buttons 9 function buttons 8 menu buttons 2 paging buttons Computer Interface Type RS 232 9 pin D sub Protocol 9600 baud...

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