Modified PAl8M/S22 to incorporate facility for soft keyed
overlay and captions as detailed in DDTM 8.317. PN3/23
with PA3A/16H. DD 1972. OBSOLESCENT.
Video Switch Panel for
during frame blanking.
GE2/S11, relay memory
selecting one output from S inputs
PN3/23 with 2 UN9/S10, AMl/Sl1,
board, and relay release board.
Video Routing Switch Panel used with mixers of the EPS/502
type to facilitate overlay working. Provides "on air"
auxiliary cut bank for 8 sources. Comprises 3 UN9/S10,
AM1/5ll and relays with rear panel for fitting in PN3/23.
1970. DD Spec 8.398. OBSOLESCENT.
Overlay Video Switch Panel used in modifying EP5/502 for
black edged captions and colour separation overlay.
Includes 6 UN9/5l0, 2 AMl/511 and logic relays. PN3/23
DD Spec 8.413.
EDI 1003S(1)MAR72. OBSOLESCENT.
Video Interfie1d Switching Panel for interfield swizching
between a maximum of 3 synchronous colour coded video
input signals. Has 6 clamped 1V d.a.p. outputs and
provides "on air cues". Controlled from a remote control
box. Mains operated. PN3/23 with GE2/511, UN9/510,
AMl/55l, AMI8/S08, AM3/501, AM4/5l9. SCPD 1971.
Caption Insertion Switch Panel. This equipment is a
system which enables a maximum of three captions to be
gated into the output of a vision mixer. Captions may be
gated in with all round edging. An interval synthesiser
and coder are also included to provide, if required,
coloured captions and edges. Equipment will completely
PA18 Sub Group not available for new designs DD 1977.
PA19 TELEPHONE PANELS
Code Ringing Panel used for engineering purposes on two
speech circuits connected in tandem. Supersedes CRP/1.
483mm x l40mm hinged mounting. 1958. DD Spec 2.165.
AC/DC Ringing Conversion Panel used at Glasgow on VF
switching system in conjunction with PA19/4 at Kirk
O'Shotts. 483mm x 89mm. DD 1960. DD Spec 2.163.