UN23/508
UN23/509
UN23/5l0
UN23/511
UN23/Sl2
UN23/513
UN23/514
UN23/SlS
UN23/S16
UN23/5l7
- 415 -
UN23
and process commands from a remote point and route them to
UN23/505, UN23/506. Also transmits from UN23/503 to the
remote point information as to the film sequence number in
use.
Printed
circuit board 254mm x l52mm
with
Slmm
x
178mm panel. SCPD 1967. OBSOLESCENT.
Decode Matrix Unit used in EP6/503 to receive the 5 bit
binary code from the memory section of UN23/S09 and decode
into
decimal
information.
Also contains amplifiers
to
give direct vacuum tube numeral indication in IN1/S02.
SCPD 1967. OBSOLESCENT.
Indication Control Logic Unit used in EP6/503 to decode
machine availability, forward and reverse signals received
from the remote telecine machine, via UN21/S03, and drive
the desk indicator lamps. Also memorises the sequency
number
and
sends
it
UN23/508.
CH1/12A.
SCPD 1967.
OBSOLESCENT.
Gating Unit used in MN2M/518, MN2M/520. Includes a 6
stage binary counter with gated outputs operated by the
"clock" output from UN17/519 to provide gating signals
corresponding to 8 consecutive groups of 8 clock pulses.
ISEP printed circuit board with 33 way plug, coding
positions 27, 29, 31. DD 1968. DD Spec 5.156. ACO.
OBSOLESCENT.
Colour Phase Error Logic Inversion Unit for inverting the
advance/retard d.c. logic error signals from CSC
phase-comparison equipment, (e.g. EP5L/505, EP5M/S06) to
control a CSC digital phase shifter (EP1L/509) in a
Genlock loop. Mains operated. CH1/12A, pegs 26, 33.
DD 1969. DD Spec 10.43. ACO. OBSOLESCENT.
Frame Counter Logic Unit used in Footage Counter
associated with
Automatic
Cinemas cope Equipment.
Counts
frames and provides output to Decade Counter Board.
BBC/ISEP board with 33 way plug. DD 1969. WITHDRAWN.
Footage Counter 2, Logic Unit used to accept pulse trains
and provide control levels for frame and decade count
boards in Footage Counter for Automatic Cinemascope
Equipment. BBC/ISEP board with 33 way plug. DD 1969.
WITHDRAWN.
Footage Counter 1, Logic Unit used for similar purpose to
UN23/513. BBC/ISEP board with 33 way plug. DD 1969.
WITHDRAWN.
Tape Reader Control
Cinemascope Equipment.
DD 1969. WITHDRAWN.
Logic Unit used in
BBC/ISEP board with 33
Automatic
way plug.
Tape Reader
Cinemascope
WITHDRAWN.
Control 2
Equipmen t .
Logic Unit used in
33 way ISEP plug.
Automatic
DD 1969.
Tape Reader Control 3 Logic Unit used in Automatic

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