UN14
UN14/515
UN14/5l7
UN14/5l8
UN14/518A
UN14/520
UN14/523
UN14L/533
UN15/1
UN15/lA
UN15/502
UN15/503
UN15/504
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Studio Mixer Phasing Unit used with MX1/503 for fine
adjustment on each of the 4 outputs. CHl/12A, pegs 28,
37. DD 1969. DD Spec 8.344. ACO. OBSOLESCENT.
PAL Delay Unit used
printed edge connector
WITHDRAWN.
in CD3M/506. Printed board with
for mounting in CHI/55. DD 1970.
Delay Unit, 0 to 5l0ns, containing 3 Johnson Matthey delay
lines and attenuators to increase the basic loss to 6dB.
Box 63mm x 76mm x 19mm to fit at the rear of PN3A/41 etc.
DD 1972. DDMI 8.418. EDI 10035(1)MAR72. OBSOLESCENT.
As UN14/518 without delay lines for use where only 1 or 2
delay
lines
are
required.
DD 1972.
DDMI 8.418.
EDI l010S(1)AUG71. OBSOLESCENT.
Variable Delay Unit, used in
chrominance luminance delay
controlled. CH1/43A. DD 1971.
EQ12M/503
inequality.
OBSOLESCENT.
to correct
Digitally
Video Delay Unit, giving a delay adjustable between 700ns
and 855ns, using Johnson Matthey delay lines. Impedances
are 75n. CHl/12A. DD 1971. OBSOLESCENT.
DD 1976. EDI 10253(P)SEP75. CANCELLED.
UN15 DESCRIMINATOR UNITS
Discriminator Unit used in UNl/52 to provide low
audio output (-50dB for t19kHz deviation).
DD 1963. OBSOLESCENT.
level
BX1/4.
Discriminator Unit
Output similar to
OBSOLESCENT.
for 10.7SMHz input used on MN4/l.
UNlS/1 but slightly modified. DD 1965.
Line Lock Discriminator Unit used in C02L/539 to provide a
d.c. error signal to lock OSl/510. Compares the phase of
a line drive or mixed sync input with a feed of 2L
derived, after suitable frequency divisions, from OSl/510.
CH1/l2A. DD 1968. WITHDRAWN.
Discriminator Unit used in the 6MHz centre frequency
locking system of MDlM/507. Provides d.c. control
voltage. Includes AM1/576, UN1/605A, UN1/60SB, UNl/605C,
UN15/504 in CHl/46A. DD 1969. DD Spec 4.56. ACO.
OBSOLESCENT.
Phase Discriminator Unit electrically as
discriminator circuit of UN15/501. Used in
Printed circuit board, 117mm x 89mm.
DD Spec 4.56. ACO. OBSOLESCENT.
the phase
UN15/503.
DD 1969.

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