HP E2550A Quality Advisor, QA 100

The Hewlett Packard Quality Advisor is a digital video analyzer designed specifically to eliminate illegal colors and sparkles from 4:2:2 (CCIR601) digital video. The HP Quality Advisor legalizes colors by reducing saturation, rather than clipping. This ensures broadcastable video without the necessity of clipping. Clipping is undesirable because it can result in tearing, smearing or even a different color or brightness when the signal is encoded. A user can choose to have automatic color correction. Or, a user can choose to have the illegal colors highlighted and make their own corrections.

The HP Quality Advisor incorporates a new quality monitoring feature, Error Detection and Handling (EDH), that eliminates the need for constant vigilance against transmission-induced artifacts (like sparkles), saving hours of valuable time. It works as follows: A checkword is computed for each full field, active field and ancillary field. These three checkwords are then inserted in the digital video stream. When this video signal is again passed thru the Quality Advisor, a second set of checkwords are computed and compared to the first set. Any difference between these sets, then, indicates that a transmission error has occurred. All errors are logged with VITC timecode for precise location. This information then allows for locating the error and determining where the error occurred (e.g., full field, active field, or ancillary field).

The EDH insertion and detection features of the HP QA 100 are also available in the HP EDH Inserter (EDH 10). The EDH 10 is similiar to the QA 100 except that it only include the Error, Detection, and Handling functionality.

[ Features ]

Eliminates Clipping Problems with Real-time Color Calculation.
User can choose to Highlight Illegal colors and apply their own correction.
User can choose Automatic correction mode.
Legalize colors while maintaining contrast.
Automatic detection of sparkles and greenies.
Automatic detection of downstream transmission errors.

[ Specifications ]

Video Processing
Video Output:                    10 bit, 4:2:2 component digital
4:2:2 Processing Delay:          Less than 2 microseconds	 
Standard Selector:               Auto 525/625

Illegal Level & Color Highlighting	
Hightlighting selectable for component analog or CCIR601
Four selectable styles for displaying illegals
Illegal Level Limits:            
   Chroma High:                  128 minimum, 255 maximum
   Chroma Low:                     0 minimum, 127 maximum
   Luma High:                    128 minimum, 255 maximum
   Luma  Low:                      0 minimum, 127 maximum

Note: Values entered in 8 bit, however, calculations are 10 bit

Illegal Color Limits Range:
   For 525 the High Range is:     80 to  140 IRE
   For 525 the Low Range is:      -8 to  -50 IRE
   For 625 the High Range is:    560 to  980 mV
   For 625 the Low Range is:     -56 to -350 mV
   For RGB the High Range is:     70 to  110 %
   For RGB the Low Range is:       0 to   20 %	
        
Error Detection and Handling
Error Detection:                 Detects full field, active picture and 
                                 ancillary data errors
Error Logging:                   Logs last 300 EDH error with VITC
Error Threshold:                 0 to 99 fields/sec. 
EDH Insertion:                   Inserts calculated EDH data packet 
                                 according to RP165


Audio Alarm:
Sounds when illegal level, color or EDH errors are detected. Can be 
turned on or off.


Safe Action/Safe Title Video Display:
80%, 90%, 100 %, and 2:35 aspect ratios are selectable.


Selectable Pixel Monitoring Formats:
10 bit YCrCb, 8 bit YCrCb, RGB, YUV, Composite Magnitude, and Composite Phase.


Remote Front Panel:
Has identical functionality of main instrument front panel

Environment: 
Operating Temperature Range:     0 degrees C to 40 degrees C

EMC:                             Meets EN55011/CISPR 11 (Group a, Class A),
                                 Meets EN50082-1, IEC 801 -2,-3,-4.


Power Requirements:
90-264 Vac, 50/60 Hz, 80 VA max.

Physical Dimensions:
Height:                           44 mm (1.75 in)
Width:                           425.85 mm (16.75 in)
Depth:                           375 mm (14.75 in)
         
Rear Panel Connectors:
Serial 4:2:2 Input and Output:    75 ohm BNC
EDH Fault Indication:             75 ohm BNC
Parallel 4:2:2 Input and Output:  25 pin submin. type D.
Analog Composite:                 75 ohm BNC
Serial Loopthrough:               75 ohm BNC
RGB or YPrPb Outputs:             75 ohm BNC
Computer Control (RS422):          9 pin submin. type D.

Warranty:
3 years

[ Ordering ]

HP E2550A HP Quality Advisor, QA 100 Opt OB2 Extra Operating Manual Opt OBW One Service Manual

HP E2550B Remote Front Panel

HP E2550C HP Quality Advisor, QA 100 and Remote Front Panel

All orders include the following:
Includes one Operating Manual, one Mouse, and one Power Cord

[ Key Literature ]

No literature is available online at this time.

[ Assistance ]

To help you make the right product choices

In the United States and Canada call 1-800-452-4844
Elsewhere, send an e-mail message to: forhptv@vid.hp.com

[ Related ]

Related Information:

Year 2000
HP Quality Advisor 100

Related product families available online:

Digital Video Signal Analyzer