IN1/1
IN1/2
IN1/3
IN1/4
IN1/5
IN1/6
IN1/7
IN1/8
IN1/502
IN1/503
- 177 -
1Nl
1Nl MISCELLANEOUS INDICATORS
Main Indicator associated with DK/4902 and DK/4906A.
Comprises FW1/1 on which are assembled LI/1s to show coded
sources
and
channels.
Structure bridges three desks of
DK/4900 type. Used Bush House. DD 1956. DD Spec 3.136.
OBSOLESCENT .
Lamp Indicator used on DK3/6. Cabinet CT2/4 with 24 LI/1.
DD 1958. OBSOLESCENT.
Main Indicator used with 3 desks of Main Control Suite in
Broadcasting House new control room. FW1/3 with 223 LI/1
to show selected sources and destinations for DK3/10 and
repeat indication of sources selected for continuity
suites Home, Light, Third and Television Sound, together
with "slow" progrannne meter for each output. DD 1958.
DD Spec 3.245. OBSOLESCENT.
Used with DK3/6. DD 1962. OBSOLESCENT.
Used at Edinburgh. DD 1962. OBSOLESCENT.
Knob and Scale Indicator. OBSOLESCENT.
Indicator, Replay, Te1ecine Sound.
DD 1964. WITHDRAWN.
Used on EP6/501.
DD 1967. CANCELLED.
Te1ecine Sequence Indicator used with EP6/503 to indicate
the film sequence number (up to a maximum of 24) for 2
remotely
controlled te1ecines.
Metal
case.
SCPD 1967.
OBSOLESCENT.
used in EP8L/503A-E as a data adaptor for
indicating on a lamp display two binary
digits in one channel. CHl/l2A, pegs 47,
DD Spec 11.99(70). WITHDRAWN.
Ident Indicator
receiving and
coded decimal
66. DD 1970.
~===~=~~~==~~=~~========~==_.==m==========================================
1Nl Sub Group not available for new designes DD 1977.
IN2/1
IN2/2
IN2 ALARM INDICATORS
Power Failure Alarm Indicator used to provide
visual warning of failure of oven power supply
Printed board ll4mm x l78mm in chassis
DD 1968. WITHDRAWN.
audible and
to PA7/506.
25mm deep.
Alarm Indicator used on a telegraph circuit to
alarm if the MARK signal (-l2V or ~80V) is absent
than 240ms, and to indicate the presence of
CR1/5U. DD 1969. WITHDRAWN.
raise an
for more
traffic.

77