UN17/514
UN17/5l5
UN17/S16
UN17/5l8
UN17/519
UN17L/520
UN17/521
UN17/522
UN17/523
UN17L/531
- 399 -
UN17
synchronous with the 'off tape'
circuit board in Eddystone box.
DDTM 7.126. OBSOLESCENT.
colour bursts. Printed
DD 1966. DD Spec 7.120.
Synchronising Unit used in GElM/530.
Binary Switch Units to form a variable
CHl/26A, pegs 5, 38. DD 1966. DD
OBSOLESCENT.
Includes UN9/528
frequency divider.
Spec 10.21. ACO.
Synchronising Unit used
divider and modulator.
CHl/26A, pegs 5, 39.
OBSOLESCENT.
in GEIM/530
Includes
DD 1966.
as a fixed frequency
UN9/528 Switch Units.
DD Spec 10.21. ACO.
Used as picture phase detector in GE1M/530. CH1/12A, pegs
5, 40. DD 1966. DD Spec 10.21. ACO. OBSOLESCENT.
Tone Detector and Pulse Comparator Unit used in GElL/537
to provide error information for controlling UN17/50l
either from an external error signal or from an internal
comparator, and selecting the source required. CHl/38,
pegs 23, 32. DD 1967. DD Spec 10.39. DDHB 10.33. ACO.
OBSOLESCENT.
Access Unit used in EPlM/5l4, EPlM/5l5 to provide access
to a line of a video circuit for the insertion and
extraction of data pulses. Incorporates a 10.00MHz
crystal oscillator (clock) to feed UN23/5l0, and provides
mixed syncs for GE2/585. CH1/43B, pegs 1, 2, 13.
DD 1968. WITHDRAWN.
Synchronising Unit used in C06/505 to provide waveforms to
synchronise GE6/508. Also provides line frequency pulses
suitable for driving PAlM/533. PN3A/19B with GE5/503,
UN16/509. DD 1968. WITHDRAWN.
Recoded UN20/536. DD 1968.
Genlock Synchroniser Unit. As UN17/50l, with additional
gating to enable seven different division ratios to be
achieved.
CHl/26A.
DD 1971.
DD Spec 10.66.
ACO.
OBSOLESCENT.
Genlock Comparison Synchroniser Unit, used in GEl/532 to
provide error signals suitable for a fast Natlock/Genlock
to a remote source. CH1/43B. DD 1971. DD Spec 10.69.
ACO. OBSOLESCENT.
Tape Machine Synchronising Unit. A relatively simple
synchroniser for use in regional film dubbing suites.
Accepts two timecode inputs and controls the speed of the
slave machine. Output of parallel time indicating either
the input times or the difference time. Five unsupported
4U BMM cards and PS2/l87G using PN3A/53C assembly.
DD 1977. CANCELLED MAY 1978.
==========================================================================
UN17 Sub Group not available for new designs. DD 1977.

99