Link electronic Portable Generator HDG 820 User Manual

800 SERIES  
LINK ELECTRONICS, INC.  
HD TEST SIGNAL GENERATOR  
MODELS HDG-820 & HDG-821  
MADE IN THE USA  
FEATURES  
8 selectable channels to be embedded  
2 AES outputs  
Power-up user settings  
Loadable factory defaults  
Adjustable audio frequency and amplitude  
23 different HD video formats  
30 different test patterns  
HD analog and SDI outputs  
YUV or RGB analog outputs  
Tri-level Sync output  
Adjustable horizontal & vertical timing (821 only)  
AES audio generation  
The HDG-820/821 series by Link Electronics is a  
series of broadcast High Definition Pattern  
Generators, providing the user with high quality, low  
cost system to produce HD Test Patterns. The  
HDG-820/821 is a self contained product for  
standard 19 inch rack mounting.  
The Link Electronics product design, performance  
and reliability are reflected in the New-Generation of  
Link Electronics products. A pair of lighted push  
buttons and an optical rotary encoder change and  
select various menus. User friendly operation is a  
key concept of the HDG-820/821.  
The HDG-820/821 is a high defintion video test  
pattern generator in a stand-alone one rack (RU)  
chassis. The unit has two serial digital outputs at  
1.485GB/s and YUV-RGB analog outputs. The  
digital and analog outputs are simultaneous on the  
rear panel, and contain the same test pattern. The  
user may embed internal audio tones on the digital  
video output, if desired.  
The 20X2 Vacuum Fluorescent Dispaly shows data  
for operational functions. All user controls are made  
from the front panel. All internal adjustments are  
made by potentiometers for precise and accurate  
settings. The user may choose to have all of the  
selections saved for power up defaults.  
The HDG-820/821 multi-format generator can be  
used where various HD signals are required. Tri-  
level-sync has its own separate output and is on all  
analog component outputs, RGB or YUV.  
There are two audio groups supported, which allow  
for eight channels. The channels can be enabled on  
an individual basis. The internal tones generated are  
adjustable from 400Hz to 10KHz, 0 to -30dBFS.  
There are also two BNC connectors for AES output,  
which will allow four channels of audio for  
monitoring. Serial control will allow changes to be  
made via a PC, (the serial control is a development  
for a later release). There are a total of thirty test  
signals available, including SMPTE, EIA and Full  
Field Bars.  
The HDG-821 is a gen-lock unit with a pair of looping  
BNC connectors on the rear panel. The gen-lock  
version provides adjustment of H & V Timing. The  
HDG-820 is a non gen-lock unit.  
1. 100% COLOR BARS  
2. 75% COLOR BARS  
3. SMPTE BARS  
9. CHROMA 10 STEP  
10. CHROMA RAMP  
11. SDI PATHOLOGICAL  
17. CHROMA MULTIBURST  
18. CHROMASWEEP5-15MHz 26. 75% BLUE  
19. CHROMA PULSE & BAR  
20. 100% WHITE  
25. 75% RED  
27. 50% GRAY  
28. BLACK  
4. 75% COLOR BARS/5 STEP 12. SDI EQ  
5. LUMA 5 STEP  
6. LUMA 10 STEP  
7. LUMA RAMP  
13. SDI PLL  
21. 75% YELLOW  
22. 75% CYAN  
23. 75% GREEN  
29. LUMA ZONE PLATES  
30. CHROMA ZONE PLATES  
14. LUMA MULTIBURST  
15. LUMA SWEEP 1-30MHz  
16. LUMA PULSE & BAR  
8. CHROMA 5 STEP  
24. 75% MAGENTA  
NOTE: All 30 test patterns are available with all 23 video formats.  
LINK  
ELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668  
Phone 573 334 4433 FAX 573 334 9255  
 

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