GE4/516
GE4/516A
GE4/516B
GE4/516C
GE4/516D
GE4/517
GE4/51S
GE4M/51SA
GE4/519
GE4L/520
GE4L/520A
GE4M/520
GE4M/520A
GE4M/520P
- 169 -
GE4
CHl/12A, pegs 12, 15. DD 1963. DD Spec 7.54. DDHB 7.97.
OBSOLESCENT.
Pulse and Bar Generator used in GE4M/5lSA. Output
includes a 405 line 2T pulse. CHl/l2A, pegs IS, 2S.
DD 1965. DD Spec 9.54. DDHB 9.96. ACO. OBSOLESCENT.
As GE4/5l6 for 625 lines.
OBSOLESCENT.
DD Spec 9.54.
DDHB 9.96.
As GE4/5l6 but provides both 2T and T pulses for 405
lines. DD Spec 9.54. DDHB 9.96. OBSOLESCENT.
As GE4/5l6B but for 625 lines. Used in GE2M/543.
DD Spec 9.54. DDHB 9.96. OBSOLESCENT.
Modified GE4/5l6C to give half height luminance
components. CHl/12A. DD 1970. WITHDRAWN.
Staircase and
CHl/l2A, pegs
OBSOLESCENT.
Pedestal
16, 17.
Generator used in GE4M/5lS.
DD 1965. DD Spec 9.60. ACO.
Test Line Signal Generator and Inserter used to provide an
internationally agreed signal on lines 18 and 331 of 625
line
waveform.
A
locked
subcarrier
is
provided
by
AM2M/506, PN3/23 with AM4/5l9, GE2/535B, GE2,540,
GE4/5l6A, GE4/5l7, OS2/5l6, PS2/l3F, MN2/509 or UNl/570.
DD 1966. DD Spec 9.69. ACO. OBSOLESCENT.
Test Line Signal Generator and Inserter used to provide a
test signal waveform on lines 13 and 215 of 405 line
waveform.
PN3/23 with AM4/5l9,
GE2/535B,
GE2/540,
GE4/5l6, GE4/5l7, OS2/l3F, MN2/509 or UNl/570. DD 1969.
DD Spec 9.69. OBSOLESCENT.
Horizontal Colour Bar Generator for testing vertical
definition of 625 line colour systems. Provides Red,
Green and Blue non-composite video outputs. Mains
operated. CHl/12A, pegs IS, 26. DD 1965. DD Spec S.205.
OBSOLESCENT.
Electrically as GE4M/520 but without CHl/33 and comprises
GE4/525, GE4/526, PS2/48 or PS2/l3F with a wired back
panel for mounting in PN3/23. DD Spec 9.73. ACO.
OBSOLESCENT.
As GE4L/520 but without GE4/526. DD 1966. OBSOLESCENT.
Non Linearity Test Signal Generator providing 405/625 line
standard luminance test signals and chrominance
counterpart. CHl/33 with PS2/l3F, GE4/525, GE4/526.
Superseded by GE4M/56l. DD 1966. ACO. OBSOLESCENT.
As GE4M/520 but for monochrome only and GE4/526 is
omitted. DD 1966. OBSOLESCENT.
As GE4M/520 but in CS2/11A with PS2/4S, if required, in

69