GE060550 GE6S/550

GE060551 GE6S/551

GE060552 GE6/552

GE060553 GE6/553

GE060554 GE6/554

GE060555 GE6M/555

connector. Supersedes GE2/604. Parent equipment SE3L/507.

DD 1981.

Teletext Test Signal Generator. This unit will generate a

teletext test waveform consisting of a pseudo-random

sequence of teletext data encompassing all possible

combinations of bit sequences. This waveform will be

inserted on to part of line 20 of a standard 625 line

video. Power requirements :t15V d.c. CH1!65A. Parent

equipment GE4M/569. DD 1981. DDMI 9.299(83).

Multipulse Waveform Generator. Generates a multipulse

waveform consisting of ten 20T modulated pulses with

carrier frequencies of 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5,

4.0, 4.5, 5.0MHz and on every tenth line a pulse and bar

waveform with 1.44T shaping. Also generates a line rate

frequency sweep from 0.5 to 5.0MHz. On internal lock the

sync pulses on the output are line repetitive, but on

external lock the output sync pulses take the form of the

external pulses.

Power requirements +12V, +5V,

-12V.

CH1/65C. Parent equipment GE4M/569. DD 1980.

Run Length Video Generator. This unit generates a video

signal from run length encoded data stored in on-card

'EPROMS' . The maximum on-card storage is 16K Bytes

according to how many and what type of 'EPROMS' are fitted

into the plug-in sockets provided. Inputs and drive

outputs are provided so that the internal memory can be

increased by the addition of an external unit. An optional

plug-in card GE6/553 is available to enable the symbol to

be remotely positioned within the displayed raster. Input

signals of inverted TTL mixed syncs and mixed blanking are

required. Power requirements +5V :to.25V at lA approx. 4U

BMM unsupported card. Parent equipment GE6M/548. Sub-

units GE6/553. DD 1981. DDMI 8.635(82).

Video Waveform Generator. This unit generates the

necessary waveforms which can delay the outputs from the

'Run Length Video Generator' GE6/552 in the line and field

directions. The delays are linearly variable and a remote

joystick may be used to position the generated symbol

anywhere in the displayed raster. This unit plugs into the

sockets provided on the GE6/552. Power requirements +5V

:to.25V. Card size 92 x 64mm. Parent equipment GE6/552.

DD 1981. DDMI 8.633(82).

Two Colour Video Generator. Converts a 5V TTL logic signal

into a two colour RGB video signal. Requires feed of TTL

mixed

blanking pulses.

Provides

two

independent video

feeds. Includes 3.6MHz low pass filtering. Colour

Selection via pcb mounted switches. Power requirements

+12v at 150mA, -5.25 at 90mA, +5.25v at 300mA. 4U

unsupported BMM card. Parent equipment GE6M/555. DD 1981.

Open University Symbol Generator. All solid state version

of Open University rotating symbol and caption. It is a

microprocessor-based equipment producing a two colour,

synthsised video output. Animation in both directions by

remote/local switch. Power requirements mains. PN3/ 54.

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