- 386 -
GEl/526. Printed board, 102mm x 5lmm, with 25 way ISEP
connector. DD 1968. DD Spec 8.302. ACO. OBSOLESCENT.
Effects Selection Switch Unit used in GE2M/573 to select 1
pegs 1, 2.
DD 1968. DD Spec 8.320. OBSOLESCENT.
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.
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 WITHDRAWN.
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.
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.
x 1 Switch Unit
DD Spec 8.364.
used in PA18L/5l9.
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
DD Spec 8.342.
EDI 10013JUN69. OBSOLESCENT.
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.
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 WITHDRAWN.
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 WITHDRAWN.
Video Switch Unit first used in C06/507 as a single pole
picture signal changeover switch with two inputs and one
output: 75~ input
levels 0.7V p-p.
Switch control signal OV and -2V d.e. CH1/l2A, pegs 45,
58. DD 1969/70. WITHDRAWN.