Rohde & Schwarz SAF TV Generators

TV Generators SAF and SFF are two multistandard instruments (B G/PAL,M/NTSC, M/PAL, N/PAL) suitable for all applications in the field oftelevision. CCVS+Component Generator SAF supplies all test signals andpatterns required for video measurements in CCVS, YCBCR, RGB and S-VHSfor-mats, for test patterns an aspect ratio of 4:3 or 16:9 beingselectable. Where only the CCVS format is required, CCVS Generator SFFcan be used.

SAF and SFF also generate all test signals to CCIR Rec. 801, a number ofcommon pathological test signals, and shallow ramps with a resolutionof 10 bits. The PALplus test pattern option provides all PALplusreference signals and the bits required for wide screen signaling (WSS).

Both generators afford extensive signal variations viasoftkey-controlled menus. Such amplitude and phase adjustments of signalcomponents enable testing of gain controls, white-level limitingcircuits and video analyzers over the whole range of the devices.User-specific signals can be defined by front-panel entry and stored inthe generator or on a memory card.

Function

The generator section is of digital design. A transputer - a high-speedRISC processor - calculates the three components Y, CB and CR of alltest signals which in CCVS+Component Generator SAF are applied to threeD/A converters. An analog matrix converts the three components into theRGB format. Therefore the RGB signals are made available simultaneouslywith the YCBCR components. The digital CCVS in SAF and SFF is determinedfrom the YCBCR components in realtime with the aid of two LSI gatearrays.

Digital Video Interface SAF-Z1

The optional Digital Video Interface SAF-Z1 upgrades the SAF and SFF foruse in digital TV studios. In addition to the analog video signals, aparallel and two serial digital video signals are thus simultaneouslyavailable.