Digital Processing Systems Personal TBC IV: Difference between revisions

Latest revision as of 20:57, 19 February 2026

Description

The Digital Processing Systems Personal TBC IV (model VT-2600) is a time base corrector designed for the Amiga video production market. Released in 1994, it provides infinite window time base correction with digital 4:2:2 component processing, making it suitable for use with consumer and prosumer VCRs including VHS, S-VHS, and Hi8 formats.

The unit features composite and wideband S-Video inputs and outputs, with full proc amp controls for video level, black level, chroma, and hue adjustment. Additional controls include red/blue color balance, horizontal and vertical Y/C delay, and various freeze and strobe effects including film-mode strobe for simulating 3:2 pulldown.

When used with the Personal Animation Recorder (PAR), the TBC IV functions as a live video capture board, connecting via a 50-pin ribbon cable through the Component Video Exchange (CVE) bus. This combination enables live video recording directly to the PAR's hard drive.

The standard VT-2600 model offers 2.5 MHz composite bandwidth. The VT-2600WB wideband variant increases this to 5.5 MHz. The Personal TBC IV Plus variant includes the DC-2600 Wideband Comb Filter Decoder daughtercard, which provides a 3-line adaptive comb filter decoder that boosts composite bandwidth from 2.5 MHz to 5.5 MHz, making it suitable for use with U-Matic SP VCRs.

The unit is controlled via RS-232 serial connection, typically from an Amiga computer running DPS control software. An ISA interface allows installation in Amiga 2000, 3000, and 4000 systems with bridgeboard configurations.

Photos

Specifications

Parameter	VT-2600	VT-2600WB / TBC IV Plus
Composite Bandwidth	2.5 MHz	5.5 MHz
S-Video Bandwidth	5.5 MHz
Signal-to-Noise Ratio	58 dB
TBC Window	Infinite (3 fields)
Processing	Component digital 4:2:2
Interface	ISA

Model Variants

Model	Description
VT-2600	Standard composite bandwidth (2.5 MHz)
VT-2600WB	Wideband composite (5.5 MHz)
Personal TBC IV Plus	Includes DC-2600 Wideband Comb Filter Decoder

Optional Accessories

DC-2600 Wideband Comb Filter Decoder - 3-line adaptive comb filter daughtercard that increases composite bandwidth to 5.5 MHz

Compatibility

The Personal TBC IV is designed for use with Amiga computers equipped with ISA bridgeboards:

Amiga 2000
Amiga 3000
Amiga 4000

When combined with the Personal Animation Recorder (PAR), the TBC IV enables live video capture capabilities.

@@ Line 6: / Line 6: @@
 |images=Digital Processing Systems Personal TBC IV photo1.webp,Digital Processing Systems Personal TBC IV photo2.webp,Digital Processing Systems Personal TBC IV photo3.webp,Digital Processing Systems Personal TBC IV photo4.webp
 |year_released=1994
-|signal_standard=NTSC
+|av_system=NTSC
-|video_inputs=Composite (BNC), S-Video (Mini-DIN-4), Reference Video (BNC), GPI Freeze Trigger
+|frequency=60Hz
-|video_outputs=Composite (BNC), S-Video (Mini-DIN-4), Advanced Sync (BNC)
-|audio_inputs=None
-|audio_outputs=None
 |features=Component digital 4:2:2 processing, infinite window TBC (3 fields), adaptive comb filter (optional DC-2600), full proc amp controls (video/black/chroma/hue), red/blue color balance, horizontal and vertical Y/C delay, freeze frame, freeze field, variable strobe, film-mode strobe, GPI freeze input, 10-event memory store/recall, genlock timing, RS-232 serial control
 |description=The Digital Processing Systems Personal TBC IV (model VT-2600) is a time base corrector designed for the Amiga video production market. Released in 1994, it provides infinite window time base correction with digital 4:2:2 component processing, making it suitable for use with consumer and prosumer VCRs including VHS, S-VHS, and Hi8 formats.
@@ Line 21: / Line 18: @@
 The unit is controlled via RS-232 serial connection, typically from an Amiga computer running DPS control software. An ISA interface allows installation in Amiga 2000, 3000, and 4000 systems with bridgeboard configurations.
-|power_voltage=120V AC
 }}
@@ Line 70: / Line 66: @@
 == See Also ==
-* [[Time base corrector]]
 * [[Digital Processing Systems DPS-290]]
 * [[Digital Processing Systems DPS-270]]
+* [[:Category:Time base correctors and frame synchronizers|Time base correctors and frame synchronizers]]
-== External Links ==
+{{AV TBC
+|type=Line TBC
-* [https://amiga.resource.cx/exp/personaltbc4 Amiga Hardware Database] - Technical specifications and photos
+|buffer_size=Infinite window (3 fields)
+|notes=Full-range timebase correction with infinite correction window
+}}
+{{AV TBC
+|type=Frame synchronizer
+|buffer_size=3 fields
+|notes=Genlock timing support
+}}
+{{AV input
+|label=Composite
+|signal=Composite (CVBS)
+|connector=BNC
+|count=1
+|audio=None
+|location=rear
+}}
+{{AV input
+|label=S-Video
+|signal=S-Video (Y/C)
+|connector=Mini-DIN-4
+|count=1
+|audio=None
+|location=rear
+}}
+{{AV input
+|label=Ref Video
+|signal=Composite (CVBS)
+|connector=BNC
+|count=1
+|audio=None
+|location=rear
+|notes=Color black reference input for genlock
+}}
+{{AV output
+|label=Composite
+|output_type=Video
+|signal=Composite (CVBS)
+|connector=BNC
+|count=1
+|location=rear
+}}
+{{AV output
+|label=S-Video
+|output_type=Video
+|signal=S-Video (Y/C)
+|connector=Mini-DIN-4
+|count=1
+|location=rear
+}}
+{{AV voltage range
+|voltage_min=120
+|voltage_max=120
+}}
+{{AV link
+|link_type=Database
+|link_source=Amiga Hardware Database
+|link_url=https://amiga.resource.cx/exp/personaltbc4
+}}
 [[Category:Digital Processing Systems AV devices]]
-[[Category:Time base correctors]]
+[[Category:Time base correctors and frame synchronizers]]