EQl
EQ1/50l
EQ1/502
EQ1/503
EQ1/504
EQIM/507
EQ1/508
EQ1/509
EQ1/510
EQ1/511
EQ1/512
EQ1/513
EQ1/S14
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EQl MISCELLANEOUS EI!UALISERS
Video Delay Equaliser desi: ;ned for use on London-New York
Music Circuit. DD 1958/61 OBSOLESCENT.
Video Delay Equaliser
OBSOLESCENT.
1lsed
in
RC4 / 501.
DD 1958/61.
Test Equaliser for pre-cor: 'ection in testing video tape
recorders to off-se t p1'e-emphasis normally included.
DD 1958/61. DD Spec 7.5. OBSOLESCENT.
Test Equaliser
Inverse of
OBSOLESCENT.
EQl/503 for
DD 1958/61.
post-correction.
DD Spec 7.5.
used with
EQ1/503.
Differential Phase and Gait. Equaliser consisting of PN3/23
with PS2/46, AM3/504, AM18/5l7, EQ1/508, UN3/5l5, AM5/5l2
and
optional
AM4/5ll.
DD 1965.
DD Spec 11.16.
DDHB 11.30. OBSOLESCENT.
Equaliser, Differential Pl.ase and Gain used in EQ1M/507
and controlled by UN3/~15. CH1/12A, pegs 21, 25.
DD 1965. DD Spec 11.17. ~ 'ITHDRAWN.
Input Equaliser used on f10nt of a simple diode detector
to correct for uneven frequency characteristic when
demodulating a vestigia] s ideb and output from a
transmitter. CH1/26A, pEgS 3, 40. Used in MN2M/505 to
feed transmitter input anc output to UNl/565. DD 1966.
DD Spec 5.121. OBSOLESCEN~.
Oscilloscope Equaliser for equalising the response of an
oscilloscope at subcarrier frequencies with respect to
lower frequencies. Printec board in box 32mm x 32mm x
5lmm fitted with plugs. DD 1966. DD Spec 9.86. ACO.
OBSOLESCENT.
Equaliser, Differential Phcse and Gain (525 lines) used in
EQ1M/507A to apply differertial phase and gain correcting
signals to the chrominance signal of an NTSC or PAL colour
signal. Controlled by 6 e.c. voltages from UN3/5l5 or a
remote
or
automatic
SOUIce.
CHl/12A,
pegs
21,
25.
DD 1967. DD Spec 11.26. CBSOLESCENT.
Video Frequency Equaliser ~plifier used in colour MCR's
nos. 4-9. Similar to E~1/505 but mounted in PN3/23
instead of CH1/13D. DD 19E7/68. WITHDRAWN.
Delay Equaliser used in C06/504
characteristic of a delay line used
section. Printed board 51mm x
WITHDRAWN .
to correct delay
in the field delay
l40mm. DD 1967/68.
Delay Line Equaliser used in C06/504 to correct the
characteristics of a group of delay lines in the
delay equipment. Comprises 6 EQ1/5l3 in copper box,
x 152mm x 38mm. DD 1967/68. WITHDRAWN.
delay
field
305mm

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