Magni VS561 PAL/NTSC/CAV Vectorscope 90-250V BNC For Parts No Covers

Magni VS561 PAL/NTSC/CAV Vectorscope 90-250V BNC For Parts No Covers

The Magni VS561 is a professional PAL/NTSC/CAV vectorscope manufactured by Magni Systems, Inc. of Beaverton, Oregon. A vectorscope is a specialized oscilloscope used in broadcast and video production to display the chrominance (color) component of a video signal as a circular polar plot, allowing engineers to verify color accuracy, saturation, and phase alignment against standard color bars. The VS561 supports PAL, NTSC, and CAV video standards with three selectable display formats (CPST, YPbPr, and GBR), making it a versatile tool for multi-standard broadcast facilities.

Specifications & What's Included

• Manufacturer: Magni Systems, Inc., Beaverton, OR, USA
• Model: VS561
• Type: PAL/NTSC/CAV Vectorscope
• Video Standards: PAL, NTSC, CAV
• Display Formats: CPST, YPbPr, GBR
• Inputs: 2 independent inputs (Input 1 and Input 2)
• Channels per input: 3 — CH A, CH B, CH C (BNC connectors)
• Input termination: 75-ohm loop-through on all channels
• External Reference: EXT REF BNC input with 75-ohm loop-through
• Auxiliary Input: DB-15 connector (AUX INPUT)
• Remote connector: DB-9 (REMOTE)
• R-Y Output: BNC (rear panel)
• AC inlet: IEC C14 (AC LINE/FUSE)
• Power: 90–250V AC, 50/60Hz
• Power consumption: 55W max
• Fuse: 1.6A, Slow-blow
• Front panel controls: POWER on/off, INTEN, ROT, FOCUS, ILLUM knobs; INPUT selector (CHA 1ABC/2ABC/BOTH, CH B, CH C); DISPLAY (VEC, AUD); FORMAT (CPST, YPbPr, GBR); GAIN (VAR, x5); PHASE (VAR, +V, PAL); REF (INT, EXT, TEST); REMOTE ON
• Form factor: Benchtop / rack-adaptable enclosure
• Covers: Side and top covers are MISSING — internal PCBs and power supply are exposed
• CRT display: Present and functional (powers on, trace visible)

Applications

Vectorscopes are standard test instruments in broadcast television, video post-production, and quality control environments. The VS561 was designed for facilities working with PAL, NTSC, and CAV composite video signals — common in broadcast stations, production houses, tape duplication facilities, and satellite uplink operations during the analog and early-digital broadcast eras of the 1980s and 1990s. Engineers used vectorscopes like this to align color cameras and VTRs, confirm SMPTE color bar compliance, troubleshoot hue and saturation errors in the signal chain, and verify chroma levels before transmission or recording. The multi-standard capability (PAL/NTSC/CAV) made instruments like the VS561 particularly useful in facilities handling international content or mixed-standard production. Today, units like this are sought by technicians maintaining legacy analog broadcast infrastructure, by collectors of vintage broadcast test equipment, and occasionally for parts to service other Magni Systems instruments.