UN260557 UN26/557
UN26/557A
UN260558 UN26/558
UN260559 UN26/559
UN260560 UN26/560
UN260561 UN26/561
UN260563 UN26/563
15 mA.
CH4/5.
4u unsupported printed board.
DD(l) 1985.
Chassis extender
Graphics Processing Unit. This unit accepts up to two bits
of TTL 625 line synchronous data and will deliver either
RGB composite or non-composite signals into 75Q. The level
of RG and B being adjustable via an on-card pin matrix.
Alternatively the two bits of data may be considered as a
key and infill for insertion of monochrome graphics into
the video input signal supplied to the unit. Power
requirements :t12V at 400mA +5V at 800mA approx. 4u BMM
unsupported card. Parent equipment GE6M/548. DD 1981.
DDMI 8.639(82).
Graphics Processing Unit. This unit is electrically and
mechanically identical to the UN26/557 with the exception
that the pin matrix is not fitted, and the 'Colour Matching
Unit' UN26/564 has been fitted in its place. Power
requirements +5V and :t12V d.c. Standard 4U BMM unsupported
card. Parent equipment GE6M/548A. DD 1982.
Digital Processing and Addressing Unit. Provides
addressing and control logic used in GE6M/555 and includes
control circuitry to interface with UN26/31, GE6/544 and
GE6/545 used in GE6M/555. Power requirements 5.25v at lA.
CH1/79. 4U Wire wrap. Parent equipment GE6M/ 555. DD
1981.
Video Input Processing Unit. This card processes IV input
composite sequential video and provides:
1. Mixed Syncs (MS)
2. Line Trigger (LT)
3. Burst Gate
4. VAS PAL square wave (7.8kHz)
5. Field Trigger (FT)
6. Colour/Mono
Power
requirements
+6V,
-6V.
4U
free
standing.
Parent
equipment EP5L/516. DD 1981.
Sync Monitor Processing Unit. De-serialises sequential
data and provides following 'active-low' outputs for each
channel:
1. Video present.
2. Video present + timed (line and field)
3. Video present + timed (line and field) + colour.
Outputs also provided indicating:
1. Single - step mode.
2. Loss of reference signals.
Power requirements :t6V, approx 150mA. 4u unsupported pcb.
Parent equipment EP5L/516. DD 1981.
Display Controller and Digital Processing Unit. Provides
addressing and control logic used in GE6M/557. Includes
control circuitry to interface with UN26/3l, GE6/544,
GE6/545, GE6/556 in GE6M/557. Power requirements 5.25V at
1. 5V. CH1/79, 4U Wire-Wrap. Parent equipment GE6M/557.
DD 1981.
Fringe Suppressor Unit. Uses the exclusive key obtained
from the Exclusive Key and Parade Unit UN26/547 to suppress
347

47