UN260571 UN26/571

UN260572 UN26/572

UN260573 UN26/573

UN260574 UN26/574

UN260575 UN26/575

UN260576 UN26/576

generator and local clock oscillator of self-test of the

complete decoder. Includes local data monitoring (select-

able via the address decoder) and signature analysis test

points. Power requirements +5V -5V. BMM 4U unsupported

solder wrap card. Parent equipment CD3M/541. DD 1982.

Decoder Output Unit. Used at the output of DPCM decoder

CD3M/541. Provides 10-bit balanced ECL output, and 2Fsc

clock synchronous with the data. 4Fsc clock output has

adjustable timing. Includes local data monitoring (select-

able via the address decoder) and signature analysis test

points. Power requirements +5V -5V. BMM 4U Unsupported

solder-wrap card. Parent equipment CD3M/541. DD 1982.

Video Processing Unit. This unit accepts video in and

outputs encoded and RGB video with teletext inserted. It

accepts teletext and After Hours Syncs from the Data Store

and Character Generator Unit UN27/507. A mixed syncs

output is also provided. Power requirements +5V at 120mA,

+12V at 200mA. Parent equipment CD3L/543. DD 1982.

Serialiser Unit. The unit serialises a 6-bit input signal.

The input is accepted at 11.456 Mword/s, together with a

11.456MHz clock from which a 68.736MHz clock is generated.

Inputs are at TTL levels. Two outputs of the 68 Mbit/s

serialised signal are provided, each having 75 ohm drive

capability and being of standard level in the CMI interface

code format. The unit forms part of 68 Mbit/s multiplexing

equipment CD4M/504. Power requirements +12V, +5V, -5V,

-12V at currents to be advised. PN1/29J. Parent equipment

CD4M/504. RD 1982.

Video Tributary Unit. Unit asynchronously multiplexes a

digital video signal with other digital signal. The video

signals is accepted in 6-bit parallel form with 4fsc clock

and 2fsc enable, all at balanced ECL levels. It is

inserted into another 6-bit signal, of nominal work rate

11.456 Mword/s, which is accepted and output at TTL levels.

A small capacity of signalling is provided. The unit forms

part of equipment CD4M/504 which multiplexes together

digital video and other signals to produce an output signal

at 68 Mbit/s. Power requirements +5 V, -5 V at current to

be advised. 4U solderwrap card with J wid th front panel.

Parent equipment CD4M/504. RD 1982.

Sound Tributary Unit. Unit asynchronously mul tiplexes a

676 kbit/s 2-channel digital audio signal with other

digital signals. The audio signal is accepted in

partially-decoded form from associated unit UN26/585 as 2

data lines with a 676kHz clock, all at TTL levels. It is

inserted into a 6-bit signal, of nominal word rate 11.456

Mword/s, which is accepted and output at TTL levels. A

small capacity for signalling is provided. Power

requirements +5V at current to be advised. 4u Solderwrap

Card with J width front panel. Parent equipment CD4M/504.

RD 1982.

Auxiliary Tributary Unit. Unit asynchronously multiplexes

a 2048 kbit/s 1st-order multiplex signal with other digital

349