GE0700ll GE7/ll

GE070012 GE7S/12

GE070013 GE7/13

GE070014 GE7/14

GE070015 GE7/15

GE070016 GE7S/16

GE070017 GE7/17

GE070018 GE7/18

GE070019 GE7/19

Mains Clock. To generate a stroke pulse once every

second/10 seconds/minute/10 minutes/hour/12 hours, or 24

hours suitable for interfacing with microprocessor PlO

device for timing applications. Power requirements +5V

(SOmA) -12V (30mA) and mains. CH1/64A. DD 1980.

16-bit Digital Generator. 16-bit sample generator for test

use in a NICAM 3 coder. It replaces a NICAM 3 ADC for test

only, but uses the same coding bar. Power requirements +5V

at 300mA. CH1/64J. Parent equipment CD2M/17. DD 1981.

NICAM 3 Multiplexer. This unit extracts PCM signals from

one CD2M/17A and multiplexes them into either a 338 kbit/s

or a 676 kbit/s bitstream in HDB3 form. It also provides

16MHz system clock to the CD2M/17A. Power requirements +5V

at 200mA; +18V at 100mA; -18V at 100mA. CH1/64J. Parent

equipment

CD2M/17A.

DD

1981.

DDMI

6.378(82).

DDHB

6.224(83). EDI 10442(1) AUG 82.

Bitstream Separator. This unit is part of a NICAM 3

Decoder, CD3M/33A. Its purpose is to separate one stereo

Bitstream from a choice of three. It generates a

continuous Bitstream at 676 kbit/s, HDB3. Power

requirements +5V at 200mA; +18V at 100mA; -15V at 100mA.

CH1/64J.

Parent

equipment

CD3M/33A.

DD

1981.

DDMI

6.389(82). DDHB 6.225(83). EDI 10445(1) AUG 82.

NICAM 3 Dummy Data Generator. This unit generates dummy

data for the unused data ports of a NICAM 3 Multiplexer

GE7/9 or GE7/9A. These ports are labelled X Y or 2 and a

stereo programme will occupy one of them, with dummy data

on the other two. The unit is housed alongside the GE7/9

or

GE7/9A.

Power

requirements

+5V

at

SOmA.

CH1/64J.

Parent equipment CD2M/17. DD 1982. DDMI 6.392(83).

Digital Tone Generator. This card is a 2-80 A controlled

processing unit supplying data to a C09/10,

Digital/Analogue Converter under control of the interface

card UN23/169. Used in GE1SM/20, Stereo Tone Sequence

Generator.

The

tones

are

stored

in

EPROMs.

Power

requirements 5 V at 1 A. 3U printed circuit board.

Parent equipment. GE1SM/20. DD 1984.

Clock Generator. Contains the following:-

1. Clock generator for AM6/27 Limiting Amplifier.

2. Balun Units to balance outputs of AM6/27.

3. +5 V Supplies for two AM6/27 amplifiers.

Power requirements +18 V, 200 mA. CH1/64A. Parent

equipment EP1M/52. Chassis extender CH1A/43. DD(6) 1985.

Ramp Generator. Digital ramp generator and pattern

selector. With GE7/19 and GE7/20 makes up a wipe pattern

generator. 6 U triple-depth Eurocard. Termination Panel:

PA20/41. Parent equipment EP5M/524. DD(8) 1985.

Wipe Pattern Combiner. Digital combining unit (ADD, AND

OR). With GE7/18 and GE7/20 it makes up a wipe pattern

generator. 6 U triple-depth Eurocard. Termination Panel:

PA20/41. Parent equipment EP5M/524. DD(8) 1985.

147