AM3/S
AM3/5A
AM3/501
AM3/S02
AM3/503
AM3/504
AM3/50S
AM3/S06
AM3/S06A
AM3!S07
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AM3
Amplifier, detector, 10.7MHz Carrier, used in RC3/S, RC3/6
to detect a 10.7MHz carrier in an IF signal and initiate
an alarm when the normal signal falls by a specific
amount. Includes PS2/22B. CH1/l2A, pegs 21, 31.
DD 1967. DD Spec S.134. OBSOLESCENT.
Cancelled. DD 1966.
Error Signal Amplifier used on AM18/S03, AM18/S04,
AM18/509 to provide the feedback path in a clamp circuit.
It samples a video signal during the blanking period and
amplifies, phase inverts and integrates the error signal.
Suitable for monochrome or N.T.S.C. type colour signals on
any normal line standards. CHl/12A. Gain: >36dB. Z in:
>l.Skn. Z out: <20~. Transistors: 2 OC71, 4 OC42, OC84.
Suffix A indicates modification to clamp back porch at
+0.3V approximately relative to earth. DD 1961.
DD Spec 6.81. ACO. OBSOLETE.
AGC Amplifier Detector. Bridges a 7S~ video line and
provides a d.c. output proportional to signal for feeding
fader such as AT3/S02 placed in AGC loop. Used on
C06/S0l.
Includes
UN9/522.
CH1/l2A.
DD 1965.
DD Spec 7.12. DDTM 7.65. OBSOLESCENT.
Error Signal Amplifier used in AMI8/513. Samples output
of AM18/5l4 during blanking period and produces a
correction signal which is applied to the AM18/Sl4 to
clamp the output post-sync blanking level at earth
potential.
CHl/l2A.
DD 1963.
DD Spec 8.lS3.
ACO.
OBSOLESCENT.
Error Signal Amplifier used
Consists of AM3/50l with
CHl/12A, pegs 20, 26.
WI THDRAWN .
with AM18/5l7 on EQIM/507.
a Clamp Pulse Generator.
DD 1965. DD Spec 11.18.
AGC Amplifier Detector. Used in line-store standards
converters (e.g. C06/S0l) to compare the peak amplitude of
an incoming IV composite of 0.7V non-composite signal with
a fixed reference voltage and to process the error to
control a fader (e.g. AT3M/506) to maintain constant
amplitude. CH1/l2A, pegs 3, 21. DD 1965. DD Spec 7.127.
ACO. OBSOLESCENT.
Colour Burst Detector Amplifier. Detects presence of
4.43MHz colour burst on a line carrying video, and
switches the video via an external unit while colour is
present. Includes PS2/22B. CHl/12A, pegs 7, 41.
DD 1966. DD Spec 11.24. DDHB 11.31. DDHB 11.40. ACO.
OBSOLESCENT.
As AM3/S06 but for American 3.58MHz colour standard (S25
lines).
DD 1966.
DD Spec 11.24.
DDHB 11.31.
DDHB 11.40. OBSOLESCENT.
Colour Burst Detector Amplifier for connecting across a
line to operate a relay when a 4.43MHz subcarrier (62S

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