UN9
- 386 -
GEl/526. Printed board, 102mm x 5lmm, with 25 way ISEP
connector. DD 1968. DD Spec 8.302. ACO. OBSOLESCENT.
UN9/564
Effects Selection Switch Unit used in GE2M/573 to select 1
or
10
alternative
waveforms.
CHl/43A,
pegs 1, 2.
6.
DD 1968. DD Spec 8.320. OBSOLESCENT.
UN9/565
Effects Generator Gating Switch Unit used in GE2M/573 to
produce the switch pulses required by the split screen
switch from the available waveforms. Includes power
supplier for the effects waveform generation units.
CHl/26A. DD 1968. DD Spec 8.387. OBSOLESCENT.
UN9/566
Standards Switch Unit used in C06/504 to provide standards
change voltages for other sub-units. Includes PS2/22B.
CHl/12A, pegs 22, 34. DD 1968. WITHDRAWN.
UN9/567
Video Switch Unit used in EPlL/5l8 to insert a portion of
the previous television line when dropout occurs during
tape playback. CH1/l2A, pegs 24, 39. DD 1968.
DD Spec 7.163. DDTM 7.157. OBSOLESCENT.
UN9/568
Insertion Test Signal Switch Unit used in MN2M/513 to
amplify and clamp the incoming video signal and route the
Insertion Test Signal to the relevant detectors. CH1/43A.
DD 1969. DD Spec 11.84. ACO. OBSOLESCENT.
UN9/569
Video 2
DD 1969.
x 1 Switch Unit
DD Spec 8.364.
used in PA18L/5l9.
OBSOLESCENT.
CH1/26A.
UN9/570
Effects Switch Unit used in studio vision mixing equipment
to insert black edged captions or other effects on the
output from either stabilising amplifier without break in
video.
CH1/l2A.
DD 1969.
DD Spec 8.342.
EDI 10013JUN69. OBSOLESCENT.
UN9/57l
Natlock Tone Switch Unit used in EP14L/503 for manual
selection, by switching control vo1tages, of one tone from
the 7 possible tones available from CD2/501. Includes
PS2/l20A which also powers CD2/50l. CHl/12A, pegs 29, 37.
DD 1969. DD Spec 10.47. DDTM 10.27. ACO. OBSOLESCENT.
UN9/573
RF Signal Switch Unit first used in Research Department
Advanced Field Store Standards Converter C06/507 to
provide through or transposer connections between 2 inputs
and 2 outputs. Controlled by PSl/32. Metal case l52mm x
57mm x 60mm. DD 1969/70. WITHDRAWN.
UN9/574
RF Signal Switch Unit fi.rst used in C06/507 for changeover
switch systems between 2 inputs and one output.
Controlled by PS1/32. Two such switches in metal case
l52mm x 57mm x 60mm. DD 1969/70. WITHDRAWN.
UN9/575
Video Switch Unit first used in C06/507 as a single pole
picture signal changeover switch with two inputs and one
output: 75~ input
and
output.
Signal
levels 0.7V p-p.
Switch control signal OV and -2V d.e. CH1/l2A, pegs 45,
58. DD 1969/70. WITHDRAWN.

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