Link electronic Portable Generator 812 OP G User Manual

A PRODUCT OF THE GENFLEX SYSTEM  
LINK ELECTRONICS, INC.  
ANALOG SYNC GENERATOR  
812-OP/G  
MADE IN THE USA  
For Future Generations  
The SPG-812 analog test set (812AT or OP/G) is an  
important element of the GenFlex family of products.  
The SPG-812 analog test set module allows the user  
to select from sixteen (16) different video test  
patterns by a front panel switch or through a remote  
control unit, the SPG-812TRC. These patterns are  
produced in any one of four (4) possible formats:  
The analog test set module may be installed in any  
slot within the SPG-812 chassis except for the slot  
dedicated to the audio module. If the 812AT is  
installed in the “Genlock Module or Master” slot, it  
will serve as the master timebase for all other  
modules in the chassis, and the overall unit would  
have no genlocking capability. The SPG-812  
analog test set uses a single 2-bit mechanical  
encoder to control all module functions including  
system timing and pattern selection. An eight-  
character alpha-numeric display provides a menu  
of options for each module parameter.  
1. Composite video plus a Y/C pair.  
2. SMPTE Component video: Y-Pr-Pb.  
3. Red, Green, and Blue. (RGB).  
4. Green + Sync, Blue, and Red.  
The 812-OP/G is the plug-in module that provides  
16 analog test signals. The test signals are:  
1)100% color bars  
2) 75% color bars  
3) SMPTE color bars  
All patterns are produced at 10-bit resolution and use  
high-performance hybrid post-filters with integral  
output amplifiers. Both NTSC and PAL video  
standards are supported.  
4) 5-Step modulated stairstep  
5) 5-step un-modulated stairstep  
6) modulated ramp  
7) un-modulated ramp  
8) 2T/12.5T pulse & bar  
9) field square wave  
10) SDI pathological pattern  
11) 50% multiburst  
12), 100% line sweep  
13) red field  
When genlocking to incoming video, the SPG-812  
chassis will have either an analog (812AG or OP/C)  
or a digital genlock module (812DG or OP/D)  
installed in the bottom slot next to the power supply  
The Genlock module places the required timing  
pulses on the motherboard buss to allow each  
subsequent module to lock to a single reference.  
The analog test set offers “infinite window” timing of  
horizontal and vertical as well as 360° subcarrier  
phasing. Timing information is stored in battery-  
backup RAM within the unit’s onboard  
microcontroller.  
14) shallow ramp  
15) gray  
16) black.  
The PCO-818 automatic pulse change-over modules operate as independent or synchronized operation. Two  
PCO-818 change-over chassis may be interlinked to cause all modules to switch should a failure occur in the  
master generator.  
LINK  
ELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668  
Phone 573 334 4433 FAX 573 334 9255  
 

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