UN2l/504A
UN2l/505
UN2l/506
UN2l/507
UN21/508
UN2l/5l0
UN2l/511
UN2l/512A
UN2l/513
UN21/514
UN2l/515
UN2l/5l6
- 411 -
UN2l
give 50 sources to 12 destinations. CHl/l2A. DD 1967/69.
WITHDRAWN.
As UN2l/504 except for circuit modifications. DD 1967/69.
WITHDRAWN .
Bi-directional Combining Relay Unit used in association
with EP6/503 to obtain a single output by combining the
bi-directional information. CHl/18A. DD 1967/69.
WITHDRAWN .
Video Relay Panel for mounting with other equipment on
PN3/23. Printed board with 12 STC type 4190 relays (wired
up as required by coaxial straps) mounted on CHl/12B with
rear connection panel fitted with PO No.l Musa connectors
for relay inputs and outputs, and 2 Painton type 159 fixed
plugs for d.c. control and supplies. DD 1969.
OBSOLESCENT.
l6mm Pye Telecine Motor Control Relay Unit used
Telecine at Television Centre. CHl/44.
OBSOLESCENT.
for News
DD 1969.
Pye Telecine Motor Control Relay
Telecine at Television Centre.
OBSOLESCENT.
Unit used
CHl/44.
for News
DD 1969.
Latching Relay Unit used in EP5/509 for sound and vision
selection. Five way selection control relay unit
employing magnetic
latching
relays.
CHl/43B.
DD 1970.
OBSOLESCENT.
Overlay Control Relay Unit used in OB vehicles modified
for colour separation overlay. Provides some of the
control and logic function required by the split screen
effects unit UN14/50lA. Printed board 102mm x l3mm.
DD 1970. DD Spec 8.406. ACO. OBSOLESCENT.
Sound Source Selection Relay Unit for the A and B Banks of
the
sound section of
EP5/509.
Includes
level
raising
amplifiers. CHl/43B. DD 1970. OBSOLESCENT.
Sound Speed Selection Relay Unit used in EP5/509 to select
speed and fraction timing components for the sound mixer
section. Feeds UN3/533. CHl/43B. DD 1970. OBSOLESCENT.
Fraction Selection Relay Unit for selecting fraction
timing components in the announcers circuit of the sound
mixer section of EP5/509, and for holding relays in the
main sound bypass circuits. CHl/43B. DD 1971.
OBSOLESCENT.
Switch Locks Relay Unit used in EP5/509 to indicate to a
selection matrix that a particular channel or channels is
in use. CHl/43B. DD 1971. OBSOLESCENT.
Latching Relay Unit used in EP5/509 for 5 way selection
control by bypass channel selection. CHl/43B. DD 1971.

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