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Video Test Generator User Guide 449
NCPP
Number Clocks Per Pixel
Class Format parameter setting - Digital video signal
Description Specifies the number of clocks per pixel (double-clocking factor for whole line). Some
industry standard formats (e.g. 480i) have pixel rates that are below the minimum pixel
rate restriction (of 25 MHz) required by the TMDS interface. In these cases, a feature
known as “double-clocking” is used to raise the TMDS clock rate to an acceptable
frequency.
Double-clocking is controlled by the NCPP format parameter. When NCPP is set to 1
(normal single-clocked), each pixel, output by the generator, is paired with one clock
pulse. In this case, the pixel rate is equal to the TMDS clock rate. By setting NCPP to 2
(double-clocked), two clocks are send during each pixel period and the TMDS clock rate is
raised to 2 times the pixel rate.
Note that double clocking with NCPP and pixel repetition (NPPP) cannot be applied at the
same time.
Command syntax NCPP factor
factor
1 or 2
Related commands NBPA, NPPP
Example
NCPP 2
FMTU
- 802BT/802R Video Test 1
- Generator 1
- User Guide 1
- Contents 3
- Chapter 5 Working with Images 5
- Chapter 10 Testing EDID 8
- Chapter 11 Testing HDCP 9
- Appendix A Command Reference 9
- Appendix B Image Reference 9
- Appendix C Error Messages 9
- 1 Getting Started 11
- Product overview 12
- Operating the generator 14
- Image knob 15
- Image Step key 15
- R, G, B Video Gate keys 16
- Outputs Key 17
- Status display 18
- Video interfaces 19
- LVDS interface 20
- HDMI interface 20
- Special Sync (S/S) interface 20
- S-Video interface 20
- Composite video BNC 21
- Component video BNC interface 21
- Computer interfaces 22
- PCMCIA interface 23
- Command interfaces 24
- Changing the baud rate 25
- 16 Chapter 1 Getting Started 26
- Special operating modes 28
- Summary of special modes 29
- About Video Generator Manager 31
- Installing VGM 32
- 2 Testing Video Displays 33
- Making physical connections 34
- Setting the video output mode 34
- Selecting video formats 35
- Selecting formats manually 36
- Selecting images 38
- Reference.” 39
- 3 Administrative Tasks 53
- Displaying system information 54
- Restoring factory settings 55
- Calibrating the generator 57
- Calibrating frequency 58
- Cloning generators 59
- Installing firmware 60
- Memory management 61
- 4 Working with Formats 63
- Format library 65
- Format naming conventions 66
- Computer display format names 68
- Aperture designators 69
- Using legacy format names 70
- Viewing the format library 71
- Viewing format details 71
- Creating custom formats 73
- Modifying existing formats 75
- Editing Format knob lists 77
- Creating format aliases 82
- 5 Working with Images 83
- Creating custom images 85
- Command file example 86
- To copy an image onto a card: 88
- Looping through images 90
- Editing Image knob list 91
- Creating image aliases 94
- 6 Working with Test 95
- Sequences 95
- Creating a test sequence 97
- Running a sequence 104
- <format><seqName> 105
- <image> <seqStep> 105
- 7 Using GPIB Interface 107
- Overview 108
- Setting the GPIB port address 109
- Queries and commands 110
- Sending commands and queries 112
- Completion handshake 113
- Input buffer 113
- Status queries and control 114
- Logical OR 115
- Bus commands 116
- 8 Analyzing Digital Sources 119
- Getting started 120
- DVI analyzer connections 121
- Starting the analyzer 123
- HS rate VS rate 125
- 48076 72.188 125
- Testing accuracy of analyzer 130
- R: G: B: 131
- 5 5 5 131
- 9 9 9 131
- Measuring pixel errors 133
- Testing audio (HDMI only) 139
- Testing the analyzer 144
- Generating Psudo 150
- Random Noise 150
- 150
- 0 21 0 151
- PER: pels/billion 152
- 4.255 0.88 152
- 1st error: FFFFFF 152
- 9 Testing HDMI Sink Devices 155
- Special: keys 158
- H31 D8C=DMT0659 158
- V60 0=SMPTE133 158
- Testing HDMI video 159
- Testing HDMI video formats 160
- Pixel repetition factor 162
- Testing HDMI audio 165
- Image Description 167
- To audio source 169
- Testing HDMI InfoFrames 171
- 10 Testing EDID 175
- Special: keys 177
- Digital friendly 177
- 170 Chapter 10 Testing EDID 180
- EDID testing for sink devices 181
- 172 Chapter 10 Testing EDID 182
- 176 Chapter 10 Testing EDID 186
- 178 Chapter 10 Testing EDID 188
- 180 Chapter 10 Testing EDID 190
- 182 Chapter 10 Testing EDID 192
- 01 HSVD 0 193
- 184 Chapter 10 Testing EDID 194
- 11 Testing HDCP 195
- 186 Chapter 11 Testing HDCP 196
- 188 Chapter 11 Testing HDCP 198
- HDCP? command 200
- Troubleshooting HDCP errors 201
- Understanding the HDCP test 202
- 194 Chapter 11 Testing HDCP 204
- 12 Using Special Sync Output 205
- Probe coordinate numbering 207
- Configuring the probe feature 208
- Action Procedure 209
- A Command Reference 213
- Commands by name 214
- Clear Status 215
- Delay Device Trigger 216
- Event Status Enable 217
- Event Status Register 218
- IDeNtification 219
- OPeration Complete 220
- Service Request Enable 222
- STatus Byte 223
- WAIt for completion suffix 226
- ALIas Kill 229
- ALIas Query 231
- Command syntax ALLE 232
- ANalyzer Image Gate 235
- ANTI-alias 237
- Audio sampling RATe 238
- Analog Sync on Blue Gating 240
- Analog Sync Composite Type 241
- Analog Sync on Green Gating 243
- Analog Sync on Red Gating 244
- Analog Sync Signal Gate 246
- Analog Sync Signal Swing 247
- Analog Video COnfiguration 249
- Analog Video Pedestal Gate 251
- Analog Video Pedestal Swing 252
- Analog Video Signal Swing 253
- Analog Video Signal Type 255
- BLUe Gate 258
- BOot and IniTialize 259
- Class System control 260
- Command syntax BOOT 260
- Bit RATe 261
- CALL internal function 265
- Composite Sync Pulse Gate 269
- Composite Sync Pulse Polarity 270
- ConTroL Mask 271
- Content Aspect Ratio 272
- Related commands EXAR, SXAR 273
- Related commands DACG 275
- Digital Audio Channel Gate 276
- Digital Audio Down-mix Gate 277
- Digital Audio Signal Type 280
- Digital Audio Content Gate 282
- Display Code Bit Mask 283
- Display Code EXpected 284
- Data Channel Power Gate 285
- Display Code ReaD 287
- DDC Version supported 288
- DIRectory save As 291
- DIRectory editing Begin 292
- DIRectory editing End 293
- DIRectory Kill 294
- DIRectory Load 295
- DIRectory New 296
- DIRectory Path 297
- DIRectory Query pointer 298
- DIRectory Save 299
- Dimension bitMAP 300
- Display sequence step NUMbers 301
- Data Island Packet Type Gate 304
- Digital Sync Composite Type 306
- Digital Sync Separate Type 307
- Digital Video Protocol Type 311
- Digital Video Sampling Mode 315
- Digital Video Signal Polarity 316
- Digital Video Signal Swing 317
- Digital Video Signal Type 318
- EDID read 320
- EQUalization Flatten 323
- ERRor queue Clear 324
- ERRor Queue 325
- Yank ERRor from queue 326
- EXtended Aspect Ratio 327
- Font DaTA 332
- FLaSH new firmware via GPIB 333
- ForMaT save As 334
- ForMaT editing Begin 335
- ForMaT editing End 336
- ForMaT in buffer Good 337
- ForMaT Justify 338
- ForMaT New 341
- Query response name 342
- ForMaT Path 343
- ForMaT Query pointer 344
- ForMaT Save 346
- ForMaT Use 347
- ForMat Zap 348
- Frame RATe Query 350
- Frame Sync Pulse Delay 352
- Frame Sync Pulse Gate 353
- Frame Sync Pulse Polarity 354
- Frame Sync Pulse Width 355
- GAMmA correction factor 356
- GAMma Correction mode 357
- Get Component Error Tallies 358
- Get First Error Data 361
- Get LUT from hardware 362
- Get Number of Pixel Tested 364
- Get PixEL color components 365
- Get Pixel Error Rate 366
- GPIB address 367
- GRNe Gate 371
- Go To Local State 372
- Horizontal RATe 377
- Horizontal RESolution 378
- Horizontal SIZe 379
- Horizontal Sync Pulse Delay 380
- Horizontal Sync Pulse Gate 381
- Horizontal Sync Pulse Width 383
- Horizontal Sync Rate Shift 384
- I2C port Read 389
- I2C port Write 391
- Initialization DETect 393
- InfoFrame Generator Use 394
- InfoFrame Type Gate 395
- InfoFrame Type Repeat Mask 396
- IMaGe save As 397
- IMaGe editing Begin 398
- IMaGe editing End 399
- IMaGe Kill 400
- IMaGe Load 401
- IMaGe New 402
- IMaGe Path 403
- IMaGe Query pointer 404
- IMaGe Save 406
- IMaGe Use 407
- Image STep 409
- Image Step Button 410
- Image VERsion 411
- Justify pixel clock RATe 414
- KEY toggle 415
- LCD Status 417
- LED Status 418
- Local Lock Out State 421
- Lut MAXimum level (Analog) 422
- Line Sync Pulse Gate 425
- Line Sync Pulse Polarity 426
- LUT save As 427
- LUT editing Begin 428
- LUT editing End 429
- LUT Kill 430
- LUT Load 431
- LUT Query pointer 433
- LUT Save 434
- Command syntax MAPS 443
- MEMory Compact 444
- MEMory Free 445
- MEMory Largest free 446
- MEMory Test 447
- Audio/Video Mute 451
- NAMe Find 452
- NAMe Insert 453
- NAMe Kill 454
- NAMe Query 455
- NAMe Yank 456
- Number Bits Per Audio sample 457
- Number Bits Per Component 458
- Number Clocks Per Pixel 459
- Number Digital Audio Channels 460
- Number Digital Audio Streams 461
- Number of ERRors in queue 462
- Number of digital LiNKs 463
- Class Custom image primitive 464
- Command syntax NOGA 464
- Number Pixels Per Pixel 466
- Number of STePs in sequence 467
- ERRor queue Overflow 468
- OUTputs Gate 471
- Pixel Clock Pulse Gate 474
- Pixel Data Analyzer Use 475
- Pixel Data Signal Height 476
- Pixel Data Signal Width 477
- Pixel Data Signal X Location 478
- Pixel Data Signal Y Location 479
- PixEL Depth 480
- PEN Height 481
- PEN Width 482
- Class System Level 483
- Command syntax PKUP 483
- Measure Pseudo Noise 484
- Pseudo Noise Generator Use 485
- Pseudo Noise Signal Advance 486
- Pseudo Noise Signal Format 487
- Pseudo Noise Signal Gate 488
- Pseudo Noise Signal Length 489
- Pseudo Noise Signal Mode 490
- Pseudo Noise Signal Procedure 491
- Pseudo-Noise Signal Seed 492
- Pseudo Noise Signal Type 493
- Pixel RATe query 494
- PRE-emphasis Gate 495
- Probe Sync Pulse Gate 497
- Probe Sync Pulse Mode 498
- Probe Sync Pulse Polarity 499
- Probe Sync Pulse Width 500
- PUT Absolute 502
- PUT Relative 503
- Pixel Aspect Ratio Query 504
- Reset masked ConTroL bits 506
- RED Gate 508
- Repeat FieLD 509
- RGB lut Query 510
- RGB Write 511
- Render MAP 512
- ROW Insert 513
- command 513
- ROW Yank 515
- Self CALibrate 517
- SCAN fields per frame 518
- Set masked ConTroL bits 519
- Sort DIRectory 520
- Sequence step DeLaY 521
- Sonic Data Mixer Gate 522
- Set End Of String 523
- SEQuence save As 524
- SEQuence editing Begin 525
- SEQuence editing End 526
- SEQuence Kill 527
- SEQuence Load 528
- SEQuence New 529
- SEQuence Path 530
- SEQuence Query pointer 531
- SEQuence Read 532
- SEQuence Save 533
- SEQuence Use 534
- SIZE of bit field 535
- Set Look-Up Table 536
- Class Sonic data generator 537
- Query syntax SMAX? 537
- Query syntax SMIN? 538
- Sequence operating MODe 539
- Digital Audio Sinewave Rate 543
- Set/Reset OPeration 544
- Select Sync Signal Type 546
- STRetchinG SCL Low Signal 548
- Single Video Signal Gating 550
- Signal Aspect Ratio 551
- Text BoX Gating 556
- User IDeNtification 563
- Command syntax UNPK 564
- VERsion Firmware 568
- VERsion Gateware 569
- VERsion Hardware 570
- Vertical RATe Query 571
- Vertical RESolution 572
- Vertical SIZe 573
- Vertical Sync Pulse Delay 574
- Vertical Sync Pulse Gate 575
- Vertical Sync Pulse Polarity 576
- Vertical Sync Pulse Width 577
- Vdram transfer To Flash 578
- Audio Clock Recovery Data 581
- AFD Mode Setting 582
- Audio InfoFrame Data 584
- EDID Data Write 594
- Generic Data Packet Data 597
- Generic InfoFrame Data 598
- Arbitrary Left Border Width 599
- MPEG InfoFrame Data 600
- Arbitrary Right Border Width 601
- Arbitrary Top Border Height 605
- Video Signal Gating 606
- Y MoDem Input 607
- YMDI YMODEM-BATCH upload 608
- Y MoDem Output 609
- B Image Reference 613
- Standard image descriptions 614
- Acer7 and Acer8 615
- Analyzer 616
- AnsiLght 617
- BarBlack 618
- MESony_G, and MESony_R 618
- MEPlus_G, and MEPlus_R 619
- BriteBox 624
- Burst (TV formats only) 625
- BurstTCE 626
- Check511 627
- CheckBy3 628
- Check_02 629
- Check_11 629
- CirclesL 630
- CirclesS 631
- ColorBar 631
- ComFocus 633
- DeltaErr 634
- Diamond1 635
- Dot_10, Dot_12, Dot_24 636
- DV_Swing 637
- EdidData 639
- FlashGry 641
- FlashRGB 641
- Flat_14, Flat_15, Flat_16 642
- Flat_B, Flat_G, Flat_R 643
- FocusC14 644
- FocusCCx 644
- FocusEMP 645
- FocusM00 - FocusM15 646
- Focus_Cx 647
- Focus_MM 649
- Focus_Oo 649
- FormatRx 650
- GenStats 651
- Geom_1 - Geom_5 651
- Gray25, Gray40 652
- GrayL1, GrayL3 653
- GraysAll 654
- HalfArea 656
- Hat1812, Hat1815 658
- Hat1812A, Hat1815A 658
- Hat2016A 659
- Hatch_16, Hatch_20 661
- Hatch64W 663
- Hitachi1 664
- InFocus1 665
- InFocus2 666
- KanjiKAN 666
- Linearty (Linearity) 668
- LinFocus 669
- Monoscop 672
- MSony7, MSony8 672
- MulBurst 673
- PacketRx 684
- PacketTx 684
- PgBar64H, PgBar64V 687
- Philips1 688
- PixelRep 688
- PRN24bit 689
- PRN_5, PRN_9 689
- PulseBar 689
- QuartBox 691
- Ramp_B, Ramp_G, and Ramp_R 693
- Regulate 694
- Samsung1, Samsung2 695
- Samsung3 696
- Samsung4 697
- Samsung5 697
- Samsung6 697
- SamsungB 698
- SamsungT 698
- SlideBox 699
- SMPTE133 700
- SMPTEbar 704
- Sony6WLC 707
- Staircas, Stairs20 708
- Strokes0, Strokes1 709
- TintAlign 711
- TVoutLin 714
- TVSplBar 715
- C Error Messages 717
- System errors 718
- Power fail message 719
- Format errors 720
- Error code descriptions 721
- 712 Appendix C Error Messages 722
- 714 Appendix C Error Messages 724
- 716 Appendix C Error Messages 726
- 718 Appendix C Error Messages 728
- 720 Appendix C Error Messages 730
- 3000-3999 Image errors 732
- 724 Appendix C Error Messages 734
- 5000-5999 Directory errors 735
- 6000-6999 Bitmap errors 736
- 7000-7999 LUT errors 736
- 8000-8999 Font errors 737
- 9000-9999 System errors 737
- 728 Appendix C Error Messages 738
- 730 Appendix C Error Messages 740
- 10000-10999 System errors 742
- 734 Appendix C Error Messages 744
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