UN20
UN20/528
UN20/53l
UN20/532
UN20/533
UN20/534
UN20/536
UN20/537
UN20/538
UN20/539
UN20/542
UN20/543
- 406 -
Video Break Detector for a 625 line signal, monochrome or
colour, with or without sound-in-syncs. Operates a relay
if break duration exceeds 64~s, and includes attenuators
which can be operated by the relay to increase the output
level
of
a
tone
input
by
l5dB.
Includes
UN16/5l6,
UN20/532, PS2/22B. CHl/26A, pegs 36, 38. DD 1969.
DD Spec 11.81. OBSOLESCENT.
Differential Phase Detector Unit used in MN2M/5l3 to
measure differential phase on an ITS.
CHl/43.
DD 1969.
CANCELLED.
Sync Break Detector Unit used in UN20/528. Printed board.
DD 1969. DD Spec 11.81. ACO. WITHDRAWN.
Horizontal Registration Detector Unit used in EPlM/520.
Accepts the R, G or B signal from the camera and gives an
error
signal
output.
Requires an
input
from
another
UN20/S33 or UN19/506. Printed board with 33 way ISEP
plug,
coding
13,
17,
19.
DD 1968.
DD Spec 7.194.
OBSOLESCENT.
Vertical Registration Detector Unit used
Accepts R, G or B signal from the camera and
signals and gives an error signal output.
with 33 way ISEP plug, coding 13, 21,
DD Spec 7.196. OBSOLESCENT.
in EPlM/520.
sundry pulse
Printed board
23. DD 1968.
Picture Phasing Telecine Detector Unit associated with
UN3/532 for ensuring that on a pulse locked telecine the
first scanned field of each frame is that beginning with a
half
line.
Mains
operated.
CHl/12A,
pegs
29,
41.
Originally coded UN17/52l. SCPD 1970. WITHDRAWN.
Inter-carrier Detector Unit used to feed a sync pulse to
MNl/508 from a sound and vision combined UHF signal
derived from a UHF drive source. Eddystone box for
fitting inside transmitter drive equipment. TCPD 1970.
ACO . WITHDRAWN .
Amplitude Detector Unit used in EP12M/S03 to measure
amplitude of bar, pulse, chrominance and slop.~ of bar in
Insertion Test Signal. CH1/43A. DD 1971. OBSOLESCENT.
Chrominance Luminance Delay Detector Unit used in
EQ12M/503 to detect chrominance luminance delay be
measurement of 20T pulse in Insertion Test Signal.
CHl/63. DD 1971. DDMI2.433(76). OBSOLESCENT.
Detector Unit, used in EP8L/507 and EP8L/508 to detect the
presence of data pulses on lines 16 and 329 of a
television signal waveform and to provide decoding pulses.
CHl/63. DD 1972. OBSOLESCENT.
HF Amplitude Detector Unit, used in EQ12M/503 to measure
bar amplitude, chrominance pulse and pulse shape in ITS
waveform.
CHl/63.
DD 1972.
DDMI2.424(76).
OBSOLESCENT.

106