UNl/608A
UNl/609
UNl/610
UNl/611
UNl/612
UNl/613
UNl/614P,AP
UNl/6l5
UNl/617
UNl/6l8
UNl/619
UNl/620
- 361
UNl
Line Erase Unit for use
DD Spec 11.73. OBSOLESCENT.
with
MN2M/514.
DD 1970.
Colour Overlay Matrix Unit used to supply B-Y colour
difference signals for colour overlay in studios.
Produces, from 3 sets of RGB outputs from colour cameras,
the corresponding B-Y signal voltages. Mains operated.
CHl/12A,
pegs
31,
33.
DD 1969.
DD Spec 8.349.
EDI 10020AUG69. OBSOLESCENT.
Gating Unit used in PAlM/558 to process the output signals
from UN4/504. CHl/43, pegs 1, 3, 9. DD 1969.
DD Spec 8.382. OBSOLESCENT.
Field Keying
PA18M/520.
WITHDRAWN.
Unit for
CHl/12A.
providing
DD 1969.
keying facilities for
EDI 10073(1)NOV70.
Field Rate Waveform Inserter Unit for displaying field
rate waveforms on a picture monitor. 525 or 625 lines.
Used with UN20/526 and PS2/l09B or PS2/9lA on video tape
machines. CHl/26A, pegs 47, 96. DD 1969. DD Spec 7.175.
EDI. OBSOLESCENT.
S-i-S Blanker Unit for removing the S-i-S information from
a video signal. Used in conjunction with UN16/516. Half
standard
size
printed
circuit
board.
DD 1969.
OBSOLESCENT.
As UNl/614 and UNl/614A but mounted in CS2/20. DD 1970.
OBSOLESCENT.
Field Keying Unit similar to UNl/611 but supplying
additional trigger pulse to operate character generator.
Used on PA18M/521. CH1/12A. DD 1969. WITHDRAWN.
Adder and Subtractor Unit giving, from IV p-p video signal
inputs A, B, the same sum and difference signal outputs A
+ B and A-C. First used Research Department Advanced
Field Store Standards Converter. CH1/12A, pegs 45, 49.
DD 1969/70. WITHDRAWN.
Flywheel Sync Unit first used in Research Department
Advanced Field Store Standards Converter, C06/507 to
regenerate inputing syncs, 525 or 625 line frequency.
Input level: nominal 2V p-p negative going line syncs.
Output level: 2V p-p negative going syncs, one output of
same timing as input and three outputs of independently
adjustable delay relative to input. CHl/12B, pegs 45, 56.
DD 1969/70. WITHDRAWN.
RF Splitting Unit first used in C06/507 to provide 3
outputs from one RF input for signal processing. Metal
case l52mm x 57mm x 60mm. DD 1969/70. WITHDRAWN.
Signal Adder Video Unit first used in C06/507 to accept
the picture signals and produce an output signal which is
half the sum of the two inputs. Input levels 0.7V p-p.

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