EPlM/ 54 7
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Video Digital Equipment for investigating the problems
involved in handling video signals coded in digital form.
Comprises an 8 bit p.c.m. coder and decoder with the
p.c.m. signal output of the coder and input of the decoder
in parallel form i.e. on 8 separate connectors. Includes
a 483mm ISEP sub-rack and 2 PN3/23 with GE1/563, GE2/601,
UN16/524, GE4/547, UNl/635, COl/503, C01/504, UN1/636.
DD 1970. WITHDRAWN .
UHF Low Noise Pre-amplifier Equipment similar to EPl/5l7
and designed to amplify all four UHF channels for a given
station. Provides 20dB gain using a 100MHz band pass
filter in Bands IV and V. Comprises AMI4/538 (including
100MHz filter and AM14/52l in a sealed box) and PSl/36.
TCPD 1971. OBSOLESCENT.
Data Buffer Equipment, used to couple "Anchor" electronic
character generating equipment, EPlM/52l, to a magnetic
data storage device. Contains 384 x 8 bit serial data
store, for changing data rates into and out of "Anchor".
PN3/23, accommodating 4 x UN9/58l, 2 x UN9/580, GE2/610,
UN1/665, UN3/543, UNl/666, UN1/667 and power suppliers.
DD Spec 7.263.
EDI 10ll4(1)NOV71. OBSOLESCENT.
Time Code Comparator Equipment, used to decode and display
feeds of the SMPTE time code and to calculate and display
the time differences between them. Special Imhof chassis,
222mm by 483mm, containing 2 x CD3/517, 2 x COl/50S,
UNl/682 and uncoded display unit and power supplier.
Special Imhof chassis, 222mm x 483mm. DD 1972.
EDI 10183(1)JLY73. OBSOLESCENT.
Caption Generator Equipment, as EPlM/52l but with
additional facilities for generation of lower case
characters. Construction as EPlM/52l, with additional
general purpose panel PN3/23 containing 10 ISEP printed
circuit boards and 2 power suppliers. DD 1972.
DDHB 7.195. OBSOLESCENT.
Automatic, rapid acting 'TARIFf equipment, used for the
correction of major colour bias on poor or variable
quality film with many shot changes. Normally used
supplementarily to EPl/503. l27mm ISEP rack containing
five printed circuit boards. DD 1972. OBSOLESCENT.
Ceefax Regenerator. The equipment extracts the CEEFAX
signal from and reinserts it in the video signal. The
equipment consists of a number of modules in the BMM
chassis system. It is intended to be used in the
transmission chain where straight forward regeneration is
required. PN3A/53D or PN3A/53E. DD 1976. CANCELLED.
Playback Machine Control Equipment to control two playback
video tape machines when used with an edit machine. Used
with EPlM/548 to give 3 machine editing capability. 5U
Superseded by EP10M/502.