- 358 -
DDHB 8.221, 8.245. OBSOLESCENT.
DD Spec 8.241.
Error Signal Binary Store Unit used in AM18L/519 to
generate a staircase waveform initiated by a received
pulse, compare it with an error signal input and store the
parity level in binary form until a reset pulse is
received. Includes 6 UN9/528. CH1/26A, pegs 3, 43.
DD 1966. DD Spec 11.33. ACO. OBSOLESCENT.
Error Signal Unit used in AM18L/5l9 to
output of AMl/552. The error signal is
between 0.7V reference and the peak
amplitude of the output video signal.
DD Spec 11.32.
DDTM 11.75(72). OBSOLESCENT.
white to black
CHl/12A, pegs 2,
Subcarrier Blanking Unit used in GE4M/540 to enable
subcarrier to be supplied to the generator section for
only the 2 ITS lines. Powered from UNl/540. CHl/12A,
pegs 7, 35. Includes NE4/5l6. DD 1966. DD Spec 9.126.
DDHB 9.96. OBSOLESCENT.
Sub-carrier and Luminance Combining Unit used to add
constant phase blanked colour sub-carrier to the output of
GE4/505A to give a waveform suitable for measuring
differential phase distortion where both input and output
are available together. CHl/12A. DD 1967. WITHDRAWN.
Servo Unit used in conjunction with
the output from UN9/548 and adjusts the
to that of the reference of the video
DD 1967. WITHDRAWN.
UHF Off Air Cue Receiver Unit tunable over Bands IV and V.
Provides video and sound outputs. Used with PSI/IS in
RClL/50l. CHl/12A. DD 1967. DD Spec 8.253. DDHB 8.236.
Similar to and interchangeable
different transistors. CHl/12A.
with UNl/584 but with
DD 1968. DD Spec 8.253.
VHF Off Air Cue Receiver Unit pre-tuned to the 13 VHF
television channels. Used with PSI/IS to provide a medium
grade standard level video signal and sound output for
comparison purposes. Used in RClL/502. CHl/12B.
DD Spec 8.184.
Version of UNl/585 for transmitter fidelity measurement
DD Spec 5.184.
Error Signal Mixing
heater supply for
Unit used in