UN3
UN3/516
UN3/517
UN3/518
UN3/519
UN3/520
UN3/521
UN3/522
UN3/524
UN3/525
UN3/526A,B
UN3/527
- 372
the latter
DD 1965/67.
CH1/12B.
is used in
DD Spec 11.20.
its manual mode.
WITHDRAWN.
Motor Control Unit used to drive a motor via a power
amplifier. Processes field trigger pulses to provide
variable phasing of the output which is filtered to give a
25c/s sine wave. CH1/12A. DD 1965/67. WITHDRAWN.
Logic Control Unit for
slow motion VTR and for
a relay board on CHl/36
CH1/34 mounted in PN3/43.
the various operating modes of a
various warning lamps. Comprises
and a transistor logic board on
DD 1965/67. WITHDRAWN.
Control Unit used to accept signals from the
switches and MN2/511 of EP5/507 and provide
non-sync switching to PA6/509. CHl/12A. DD
WITHDRAWN.
external
sync and
1965/67.
Vertical Aperture Corrector Processing Unit used in
EPlL/516 to form and process a vertical correction signal
from 3 video signals and add this to the main video
signal. CHl/12A, pegs 16, 35. DD 1967. DD Spec 7.146.
DDHB 7.143. ACO. OBSOLESCENT.
Control Unit used in EP5/508. Provides relay logic
circuits to drive cut fade amplifiers and sync switches.
CH1/12B (similar), peg 12. DD 1968. DD Spec 8.323.
OBSOLESCENT.
Monitor Control Unit
appropriate signals.
DD 1968. DD Spec 9.114.
used in MN7M/504 for
Includes PS2/22B.
ACO. OBSOLESCENT.
selecting
CHl/26B.
Gain Control Unit used in EP7/5l3. Accepts a low level RF
signal which is peak detected, amplified and used to
control the attenuation presented to the main RF signal.
CH1/48A. DD 1969. WITHDRAWN.
Modulated Line Drive Control Unit for remote control of
modulated line drive. Includes controls for coarse and
fine frequency, amplitude, and static shift via 15 way
Painton type 159 connector. Small Edd) 3tone box.
DD 1969. DD Spec 8.370. OBSOLESCENT.
Control Unit used in MN2M/5l8 to select anyone of 3 video
inputs and route it to the monitoring section on receipt
of a logic unit. Has manual override. CHl/43B, coding 1,
4, 5. DD 1969. DD Spec 11.103. ACO. OBSOLESCENT.
Shift Control Unit used in EPlM/520 to accept error
signals from the registration detector unit and produce a
current drive to control the camera shift circuits. A =
horizontal shift, B = vertical shift. Printed board with
33
way
ISEP
plug,
coding
21,
23,
25.
DD 1969.
DD Spec 7.197. OBSOLESCENT.
Storage Control Unit used in
pulses for UN1/622. Printed
EPIM/521 to provide control
board with 33 way ISEP plug,

72