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⟦250149925⟧ Wang Wps File
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…02…CPS/SDS/001
…02…SRA/810430…02……02…
CAMPS SYSTEM DESIGN SPECIFICATION
…02…ISSUE 1…02…CAMPS
T̲A̲B̲L̲E̲ ̲O̲F̲ ̲C̲O̲N̲T̲E̲N̲T̲S̲
5.3 DISTRIBUTION, MONITORING & TEST (DM&T)
DESIGN .................................. 201
5.3.1 General ..............................
201
5.3.2 Distribution & Monitoring Equipment/
Facilities ...........................
201
5.3.2.1 DEC - Category 1 .................
209
5.3.2.2 DEC - Category 2 ................ 211
5.3.2.3 DEC - Category 3 .................
213
5.3.2.4 DEC - Category 4 .................
215
5.3.2.5 DEC - Category 5 .................
217
5.3.3 Test of Distribution Equipment .......
217
5.3.4 Appendx A ........................... 217
5.3 D̲I̲S̲T̲R̲I̲B̲U̲T̲I̲O̲N̲,̲ ̲M̲O̲N̲I̲T̲O̲R̲I̲N̲G̲ ̲&̲ ̲T̲E̲S̲T̲ ̲(̲D̲M̲&̲T̲)̲ ̲D̲E̲S̲I̲G̲N̲
5.3.1 G̲e̲n̲e̲r̲a̲l̲
The aim of this section is to explain the design of
the DM&T equipment/facilities as implemented in the
presentCAMPS H/W configuration shown in fig. 5.3.1-1.
5.3.2 D̲i̲s̲t̲r̲i̲b̲u̲t̲i̲o̲n̲ ̲&̲ ̲M̲o̲n̲i̲t̲o̲r̲i̲n̲g̲ ̲E̲q̲u̲i̲p̲m̲e̲n̲t̲/̲F̲a̲c̲i̲l̲i̲t̲i̲e̲s̲
The present CAMPS system interfaces to terminals and
external circuits, both in a collocated and a remote
configuration.
The main difference etween a collocated and a remote
configuration is that data exchange in the remote configuration
involves VF-Modem links carrying encrypted data (crypto/modem
link).
The types of terminals in collocated configurations
are:
- Visual Display Unit (VDU)
- Medium Speed Teleprinter (MSP)
- Low Speed Channel Device (i.e TTY) (LSC)
- Optical Character Reader (OCR)
- Paper Tape Puncher (PTP)
- Paper Tape Reader (PTR)
The rmote terminal configuration is only applicable
to a subset of these namely:
- VDU
- MSP
Furthermore, the remote terminal concept involves a
statistical multiplexing/demultiplexing system minimizing
the number of crypto/modem links.
The typesof external circuits in collocated configurations
are:
- NICS/TARE
- SCARS
- CCIS
The remote external circuits configuration is only
applicable to NICS TARE.
Terminals and external circuits, collocated or remote,
are connected t CAMPS via the Distribution Equipment.
The path for data exchange between CAMPS and one collocated/remote
terminal type or one collocated/remote external circuit
type will in the following be referenced to as a Data
Exchange Channel (DEC).
A DEC ontains distribution equipment and a line terminating
unit.
Two types of line terminating units exist
- Line terminating unit of the LTU type (I/O BUS
I/F)
- Line terminating units of the LTUX type (TDX BUS
I/F)
Common to all DECs is the elctrical interface specification
between a line terminating unit and its associated
distribution equipment. This I/F conforms to the CCITT
V24/V28 recommendations. To adapt this internal standard
interface to the various interface requirements of
th terminals and external circuits, collocated or remote,
three main types of distribution equipment are involved:
- Optical link distribution
- Low level V24/V28 distribution
- Statistical mux/demux distribution
5 categories of DECs are implmented to satisfy interface
and security requirements when connecting terminals
and external circuits to CAMPS. These are as shown
in fig. 5.3.2-1.
The line termination modules are placed within CAMPS
in either a TDX CRATE ASSEMBLY shown in fig. .3.2-2
or a CHANNEL UNIT ASSEMBLY shown in fig. 5.3.2-3.
Some of the modules of the Distribution Equipment are
also placed in either a TDX crate assembly or a Channel
Unit assembly.
FIGURE 5.3.1-1…01…CAMPS H/W CONFIGURATION…86…1 …02… …02… …02… …02… …02…
FIGURE 5.3.2-1…01…DATA EXHANGE CHANNEL MATRIX…86…1 …02… …02… …02… …02… …02…
FIGURE 5.3.2-2
TDX Crate Assembly…86…1 …02… …02… …02… …02… …02…
FIGURE 5.3.2-3…01…CHANNEL UNIT ASSEMBLY…86…1 …02… …02… …02… …02… …02…
TABLE 5.3.2-4…01…Data Exchange Channel, Category Characteristics…86…1 …02… …02… …02… …02…
…02…
In the following paragraphs each DEC category is described.
Furthermore, monitoring facilities for each category
will be indicated.
Where applicable the mechanical dimensions ofthe involved
modules will be referenced to as:
- Standard CR80S module, or
- Standard CR80D front crate module, or
- Standard CR80D rear crate module
For further explanation of the CR80S and CR80D mechanics
please refer to section 5.5.
5.32.1 D̲E̲C̲ ̲-̲ ̲C̲a̲t̲e̲g̲o̲r̲y̲ ̲1̲
Fig. 5.3.2.1-1 shows the cat. 1 DEC along with facilities
to monitor the DEC traffic. The OPTO Transceivers perform
the conversion from the V24/V28 circuitry signals to
serial opto signals and vice versa.
The V24 circuits tansferred via the distribution equipment
and the baud rates are as shown in table 5.3.2-4. For
explanation of the V24 circuit numbers please refer
to Appendix A (subsection 5.3.4).
The DEC is formed by one LTUX channel and the associated
distribuion equipment.
The LTUX is a standard CR80S module placed in a TDX
crate as shown in fig. 5.3.2-2. The LTUX is capable
of handling max. 4 DECs depending on transmission speed
and protocols. The V24/V28 MONITOR module shown is
not normally mounted But when plugged into the TDX
crate for maintenance purposes it enables monitoring
of the LTUX V24/V28 signals via Cannon plugs on its
front panel. The V24/V28 MONITOR module is a standard
CR80S module providing monitoring access to all 4 V24/V28
