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…07……00……00……00……00…:…02……00……00…:
9…08…9…0e…9…05…9…06…9…07…8…08…8…09…8…0a…8…0b…8…02…8
7…0b…7…0c…7
7 …86…1 …02… …02… …02…
…02…CPS/SDS/001
…02…SRA/820402…02……02…
CAMPS SYSTEM DESIGN SPECIFICATION
…02…ISSUE 1.2…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 Signal Adaption ......................
217
5.3.3.1 The V24/V28 (L/L) Adapters........
217
5.3.3.2 The OPTO TRANSCEIVERS ............
217
5.3.3.3 The Adapter Crate ................
217
5.3.4 Test of Distribution Equipment .......
218
5.3.5 Appendix A ...........................
218
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
present CAMPS 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 between 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 remote 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 types of 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 to 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 contains 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 electrical 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
the 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 implemented 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 Unit shown in fig. 5.3.2-2 or a CHANNEL
UNIT shown in fig. 5.3.2-3.
Some of the Distribution Equipment modules are also
placed in either a TDX Unit or an Adapter Crate (ref.
sec. 5.3.3.3).
FIGURE 5.3.1-1…01…CAMPS H/W CONFIGURATION
FIGURE 5.3.2-1…01…DATA EXHANGE CHANNEL MATRIX
FIGURE 5.3.2-2
TDX Unit, Front view
FIGURE 5.3.2-3…01…CHANNEL UNIT ASSEMBLY
TABLE 5.3.2-4…01…Data Exchange Channel, Category Characteristics
In the following paragraphs each DEC category is described.
Furthermore, monitoring facilities for each category
will be indicated.
Where applicable the mechanical dimensions of the 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.
5.3.2.1 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 transferred 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 5.3.5).
The DEC is formed by one LTUX channel and the associated
distribution equipment.
The LTUX is a standard CR80S module placed in a CTX
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 CTX
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
channels of the LTUX.
The distribution equipment contains a CTX crate mounted
OPTO TRANSCEIVER, an OPTO cable and a terminal OPTO
TRANSCEIVER.
Figure 5.3.2.1-1
Data Exchange Channel - Category 1
The CTX crate mounted OPTO TRANSCEIVER is a standard
CR80S module capable of converting 1 V24/V28 channel
into 1 optical link signal and vice versa. On the front
panel are 2 optical link receptacles, one transmit
and one receive receptacle.
The OPTO cable is a dual optical mono fiber cable transferring
optical signals between the two types of opto transceiver.
The terminal OPTO TRANSCEIVER is capable of converting
1 V24/V28 channel, coming from the terminal, into 1
optical link signal and vice versa. The layout allows
the OPTO TRANSCEIVER to be placed within the terminal.
5.3.2.2 D̲E̲C̲ ̲-̲ ̲C̲a̲t̲e̲g̲o̲r̲y̲ ̲2̲
The cat. 2 DEC is shown on fig. 5.3.2.2-1. Facilities
to monitor the DEC traffic are also indicated.
The cat. 2 DEC consists of 1 LTUX channel and the associated
distribution equipment.
The LTUX is a standard CR80S module placed in a CTX
crate as shown in fig. 5.3.2-2. The LTUX is capable
of handling max. 4 DECs depending on transmission speed
and protocols. Towards the low speed channel devices
the LTUX provides 4 DECs. The V24/V28 MONITOR module
shown is not normally mounted. But when plugged into
the TDX Unit 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
channels of the LTUX.
The distribution equipment contains a CTX crate mounted
V24/V28(L) ADAPTER and a cable connecting the V24/V28(L)
ADAPTER and the CAMPS V24 Filter Assy. (Internal Distribution
Frame).
The V24/V28(L) ADAPTER converts the standard CCITT
V24/V28 signal levels to low level V24/V28 (V24/V28(L))
signals and vice versa. These low level signals conform
with the security requirements specified in CPS/210/SYS/0001
paragraph 3.4.5.1.
Figure 5.3.2.2-1…01…Data Exchange Channel - Category 2
The V24 signalling circuits and baud rates used are
as shown in table 5.3.2-4. For explanation of the V24
circuit numbers please refer to sub section 5.3.5 (Appendix
A).
The V24/V28(L) ADAPTER is a standard CR80S module capable
of converting V24/V28 lines to low level lines and
vice versa. The front panel holds CANNON plugs for
connecting cables between the module and the V24 Filter
Box.
5.3.2.3 D̲E̲C̲ ̲-̲ ̲C̲a̲t̲e̲g̲o̲r̲y̲ ̲3̲
The cat. 3 DEC is shown on fig. 5.3.2.3-1. Monitoring
facilities concerning this DEC are also shown.
The cat. 3 DEC consists of 1 LTUX channel and the associated
distribution equipment.
The LTUX is a standard CR80S module placed in a CTX
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
unit 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
channels of the LTUX.
The distribution equipment consists of a V24/V28 ADAPTER,
a rack mounted statistical multiplexer/demultiplexer,
a V24/V28(L) ADAPTER, a CRYPTO/MODEM block, and another
statistical multiplexer/demultiplexer.
The statistical multiplexer/demultiplexer performs
multiplexing of 8 V24/V28 channels into 1 V24/V28 channel,
and demultiplexing of 1 V24/V28 channel back to 8 V24/V28
channels. This multiplexing/demultiplexing efficiently
reduces the number of crypto- and VF-modem equipment
and modem links involved in remote terminal communication.
Figure 5.3.2.3-1…01…Data Exchange Channel - Category 3
The Statistical MUX/DEMUX V24/V28 port towards the
CRYPTO/MODEM link provides MIL-188C signals. These
low level signals conform with the security requirements
specified in CPS/210/SYS/0001 paragraph 3.4.5.1.
The CRYPTO/MODEM link of the DEC connects the remote
terminal location and the CAMPS main site location
via a VF channel carrying encrypted data.
The V24 signalling circuits and baud rates used are
as shown in table 5.3.2-4. For explanation of the V24
circuit numbers please refer to sub-section 5.3.5 (Appendix
A).
5.3.2.4 D̲E̲C̲ ̲-̲ ̲C̲a̲t̲e̲g̲o̲r̲y̲ ̲4̲
The cat. 4 DEC is shown on fig. 5.3.2.4-1, and it consists
of 1 LTU channel and the associated distribution equipment.
The LTU is a standard CR80D front crate module placed
in the Channel Unit assembly as shown in fig. 5.3.2-3.
The LTU is capable of handling max. 2 DECs.
The distribution equipment consists of a LIA-N, 1 cable
connecting the LIA-N and a Back Panel type 8 (BP8),
1 V24/V28(L) adapter and 1 cable connecting the V24/V28(L)
and the V24 Filter Box. The BP8 and the V24/V28(L)
Adapter are both placed in the Adapter Crate.
The V24/V28(L) ADAPTER converts the standard CCITT
V24/V28 signal levels to low level V24/V28 (V24/V28(L))
with the security requirements specified in CPS/210/SYS/0001
paragraph 3.4.5.1.
The V24 signalling circuits and baud rates used are
as shown in table 5.3.2-4. For explanation of the V24
circuit numbers please refer to sub section 5.3.5 (Appendix
A).
The V24/V28(L) ADAPTER is a standard CR80S module capable
of converting V24/V28 lines to low level lines and
vice versa. The front panel holds CANNON plugs for
connecting cables between the module and the V24 Filter
Box.
Figure 5.3.2.4-1…01…Data Exchange Channel - Category 4
Applicable V24 circuits and baud rates are shown in
table 5.3.2-4. For explanation of the V24 circuit numbers
please refer to section 5.3.5 (Appendix A).
5.3.2.5 D̲E̲C̲ ̲-̲ ̲C̲a̲t̲e̲g̲o̲r̲y̲ ̲5̲
This DEC cat. 5 is shown on fig. 5.3.2.5-1.
The DEC implementation conforms with the description
of the cat. 4 DEC the only difference being the number
of circuits in the V24/V28 channel. The DEC cat. 5
shows an extended number of V24 control circuits to
enable the DEC to control and monitor a CRYPTO link
in case of a connected remote NICS TARE.
Applied V24 circuits and baud rates are as shown in
table 5.3.2-4. For explanation of the V24 Circuit numbers
please refer to section 5.3.5 (Appendix A).
5.3.3 S̲i̲g̲n̲a̲l̲ ̲A̲d̲a̲p̲t̲i̲o̲n̲
The following paragraphs will describe the signal Adapters
mentioned in the previous sections more detailed. Furthermore
the Adapter Crate housing the LTU and WDP signal adapters
will be described in para. 5.3.3.3.
5.3.3.1 T̲h̲e̲ ̲V̲2̲4̲/̲V̲2̲8̲ ̲(̲L̲/̲L̲)̲ ̲A̲d̲a̲p̲t̲e̲r̲
The V24/V28 (L/L) (L/L: Low level/Long lines) Adapter
converts a standard CCITT V24/V28 interface to low
level V28 interface as specified in CPS/210/SYS/0001
para. 3.4.5.1, or MIL-STD-188C interface by cutting
printed circuit straps.
Furthermore each receive circuit towards the low level
link can provide fail safe operation i.e. if a circuit
looses its connection across the low level link the
circuit enters the 'passive' state. Cutting a printed
circuit strap belonging to a receive circuit the failsafe
operation is cancelled for this receive circuit.
By moving one 'finger' strap it is possible to select
signal polarity for circuits 103 and 104 according
to CCITT V28 or MIL-STD-188C.
The V24/V28 (L/L) Adapter exists in 2 versions.
a) The Version 1 adapter is capable of converting
4 V24/V28 interfaces to 4 low level interfaces.
This adapter type provides for each channel the
following interchange circuits towards the low
level link:
CANNON PLUG CIRCUIT NO. SIGNAL NAME
PIN NOS. (CCITT V24)
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲
7 102 Signal ground
2 103 Transmitted data
3 104 Received data
5 106 Clear to Send
6 107 Data Set Ready
20 108.2 Data Terminal
Ready
14 N/A Signal ground
for circuit 103/104
19 N/A Signal ground
for circuit 107/108.2
16 N/A Signal ground
for circuit 106.
By moving 'finger' straps each channel can be configured
to act a DTE except circuit 106, which in this
case must be disconnected, or a DCE.
Each channel is waveshaped for 1200 Baud which
then is the maximum transmission speed to be used
via the version 1 adapter.
b) Mechanical and electrical specifications for the
Version 1 Adapter:
1) M̲e̲c̲h̲a̲n̲i̲c̲a̲l̲ ̲D̲i̲m̲e̲n̲s̲i̲o̲n̲s̲:̲
Height: 221,5 mm ( 5U)
Width: 34,2 mm ( 2M)
Length: 305 mm
2) Electrical Specifications
2 power sources can be selected, either
a) 18 V ac RMS, supply current: 1A RMS,
or
b) + 5V dc, supply current:
+ 12V dc, supply current:
- 12V dc, supply current:
c) The Version 2 adapter is capable of converting
1 V24/V28 interface to 1 low level interface. The
following circuits are provided towards the low
level link:
CANNON PLUG CIRCUIT NO. SIGNAL NAME
PIN NOS. (CCITT V24)
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲
7 102 Signal ground
2 103 Transmitted data
3 104 Received data
4 105 Request To Send
5 106 Clear to Send
6 107 Data Set Ready
20 108.2 Data Terminal
Ready
8 109 Data Carrier
Detect
24 113 Transmitter Clock
15 114 Transmitter Clock
17 115 Receiver Clock
14 N/A Signal ground
for circuit 103/104
19 N/A Signal ground
for circuit 107/108.2
16 N/A Signal ground
for circuit 105/106.
12 N/A Signal ground
for circuit 113/114
18 N/A Signal ground
for circuit 115
Circuits 113 and 114 are not available at the same
time, i.e. the adapter can either drive/receive
circuit 113 or drive/receive 114.
With the exception of circuit 109 the version adapter
can be configured to act as a DTE or a DCE, in
which case circuit 109 must be disconnected.
The adapter channel is waveshaped for 9600 Baud
operation which then is the maximum transmisson
speed to be used via the Version 2 adapter.
d) Mechanical and electrical specifications for the
Version 2 adapter.
1) M̲e̲c̲h̲a̲n̲i̲c̲a̲l̲ ̲D̲i̲m̲e̲n̲s̲i̲o̲n̲s̲
Height: 221.5 mm ( 5U)
Width: 17.1 mm ( 1M)
Lenght: 305 mm
2) E̲l̲e̲c̲t̲r̲i̲c̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲s̲
2 power sources can be selected, either
a) 18 V ac RMS, supply current: 0,52 A RMS,
or
b) + 5 V dc supply current:
+12 V dc supply current:
-12 V dc supply current:
5.3.3.2 T̲h̲e̲ ̲O̲P̲T̲O̲ ̲T̲R̲A̲N̲S̲C̲E̲I̲V̲E̲R̲
The OPTO TRANSCEIVER converts either 1 standard CCITT
V24/V28 or 1 MIL-STD-188C (strap selectable) interface
to an optical (light) interface and vice versa. The
OPTO TRANSCEIVER exists in 3 versions: OM1, OM2, and
OM3.
a) T̲h̲e̲ ̲O̲M̲1̲ ̲O̲P̲T̲O̲ ̲T̲R̲A̲N̲S̲C̲E̲I̲V̲E̲R̲
The OM1 is a circuit card assembly, designed to
be installed in CAMPS VDUs. The OM1 module is designed
to operate asynchronously up to 19.2 kBaud, providing
full duplex operation over two fiber optic cables.
It also provides a full duplex path for 3 separate
control signals which are multiplexed along with
the data.
Electrical Signal interfaces (MIL OR EIA) are provided
through a 14 pin AMP connector. This connector
is wired as shown in fiugre 5.3.3.2-1.
The fiber optic interface is provided via two fiber
optic connectors, 1/4-36 threaded couplers.
The different operating options associated with
the OM1 are selected by soldered straps on the
PCB (Printed Circuit Board).
AMP CIRCUIT SIGNAL NAME
CONNECTOR NO.
PIN NO. (CCITTV24)
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲
1 N/A Not used
2 104 Received data
(output)
3 107 Data Set Ready
(output)
4 103 Transmit data
(input)
5 108.2 Data Terminal
Ready (input)
6 105 Request to Send
(input)
7 106 Clear to Send
(output)
8 N/A (pin removed)
9 102 Signal Ground
10 N/A Signal quality
output
11 109 Data Carrier
Detect (output)
12 N/A Control output
13 N/A Control input
14 101 Frame ground
Electrical Signal Interface
Figure 5.3.3.2-1
1) E̲I̲A̲/̲M̲I̲L̲:̲
These two jumpers are used to select the desired
sense logic (Negative mark for MIL or positive
mark for EIA (V28)) on the Transmit Data input
and the Receive Data output. CAMPS applicaton
requires strap EIA installed.
2) 1̲/̲2̲:̲
These two set of jumpers are used to select
different RTS/CTS operating modes. When jumper
1 is installed the local fiber optic modem
will transmit RTS to the remote modem and receive
CTS from the remote modem. When jumper 2 is
installed the local modem will accept the RTS
signal from the local device; then, after a
selectable delay, the local modem will provide
a CTS signal output to the local device. Jumper
2 will also loop the CTS signal (from the remote
modem) back as the RTS signal.
If the fiber optic modems are used to link
a terminal with a communications device (such
as a long-haul modem) both modems should be
wired to the jumper 1 option and the fiber
optic modem/long-haul modem RTS/CTS interface
should be reversed. With this configuration,
the fiber optic modems will appear fully transparent
since the long-haul modem will establish the
RTS/CTS delay for the terminal.
An alternate method would be to set the local
modem option 1 and the remote modem to option
2. With this configuration the RTS/CTS delay
for the local device would be equal to the
propagation delay through the fiber optic link.
The RTS/CTS delay for the remote device would
be established by the remote fiber optic modem.
The CAMPS application requires the strap in
position 2. (For the Remote Terminal option
the strap should be in pos. 1).
3) 3̲/̲4̲
The modem is designed to be operated with an
external Control in signal. If an external
control signal is not required, the input may
be strapped to a steady high to provide a "true"
DSR output at the remote modem. Insert strap
3 when the external control signal is used
and insert strap 4 to provide a steady high
on the input.
For the CAMPS application (incl. the Remote
terminal option) this strap should be in pos.
4.
4) 5̲/̲6̲/̲7̲
These three straps are used to select different
output signals. With strap 5 installed the
Control in signal from the remote modem will
be aplied as the DSR output. With strap 6 installed
the Control in signal will be applied as the
Control Out. And with strap 7 installed the
DTR input from the remote modem will be aplied
as the DSR and DCD outputs.
CAMPS application (incl. the Remote Terminal
option) requires this strap to be in pos. 7.
b) M̲e̲c̲h̲a̲n̲i̲c̲a̲l̲ ̲a̲n̲d̲ ̲E̲l̲e̲c̲t̲r̲i̲c̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲s̲ ̲f̲o̲r̲ ̲t̲h̲e̲
̲O̲M̲1̲
M̲e̲c̲h̲a̲n̲i̲c̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
Height: 229 mm
Length: 197 mm
Width: 25,4 mm
E̲l̲e̲c̲t̲r̲i̲c̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
Supply voltage Supply current
115VacRMS,50Hz 0.1A RMS
The power is connected via a 3 poled male MOLEX
connector with pin 1 and 2 being the power input
and pin 3 being Frame ground.
c) T̲h̲e̲ ̲O̲M̲2̲ ̲O̲P̲T̲O̲ ̲T̲R̲A̲N̲S̲C̲E̲I̲V̲E̲R̲
The OM2 is a standard CR80S CAMAC module to be
placed in either a TDX Unit or in the Adapter Crate.
The OM2 module is designed to operate asynchronously
up to 19.2 KBaud or synchronously up to 38.4 KBaud,
providing full duplex operation over two fiber
optic cables. Furthermore, it provides a full duplex
path for 3 separate control signals which are multiplexed
along with the data.
The OM2 is designed to operate with an internal
or an external transmit clock signal - if the external
transmit clock signal is used the transmit data
will be brought through an 'elastic' buffer to
compensate for the external transmit clock and
internal OM2 clock phase differences.
Electrical interfaces (MIL or EIA) are provided
via a card edge connector fitting into the CTX
crate motherboard connector.
Signals on this connector is shown in figure 5.3.3.2-2.
The fiber optic interface is provided via two front
panel mounted fiber optic connectors, 1/4-36 threaded
couplers.
Electrical Signal Interface…01…Figure 5.3.3.2-2
The different operating options associated with
the OM2 are selected with mechanical ('finger')
straps. These straps are:
1) A̲,̲ ̲B̲,̲ ̲C̲-̲E̲I̲A̲/̲M̲I̲L̲
These three jumpers are used to select the
desired sense logic (negative Mark for MIL
or Positive Mark for EIA). Jumper set A is
for the transmit input, B is the buffer output,
and C is the receive data output. All shall
be set to EIA for the CAMPS application.
2) X̲M̲T̲ ̲C̲L̲K̲/̲R̲C̲V̲ ̲C̲L̲K̲
These two sets of jumpers are used to select
the transmit and receive clock rates at 2.4,
4.8, 9.6, 19.2, or 38.4 KBPS. They shall be
set to 38.4 KBPS for the CAMPS application.
3) I̲N̲T̲/̲E̲X̲T̲
This jumper is used to select the internal
or external transmit clock signal. If the external
clock signal is used, jumper 6 and the two
RC jumpers (described below) must be installed.
This strap shall be set to INT for the CAMPS
application.
4) 5̲/̲6̲
This jumper is used to select or bypass the
transmit data input buffer. With jumper 5 installed
the transmit data input signal will bypass
the buffer. With jumper 6 installed the transmit
data signal will be brought through the buffer.
Jumper 6 must be installed when an external
transmit clock signal is used. This strap shall
be set to 5 for the CAMPS application.
5) T̲C̲/̲R̲C̲,̲ ̲A̲G̲G̲T̲C̲/̲R̲C̲
These two sets of jumpers are used to select
either the transmit or receive clock as input
to the transmit multiplexer circuits. When
an external transmit clock signal is used the
two jumpers must be set to the RC position.
These straps shall be set to TC and AGGTC for
the CAMPS application.
6) 1̲/̲2̲
These two sets of jumpers are used to select
different RTS/CTS operating modes. When jumper
1 is installed the local fiber optic modem
will transmit RTS to the remote modem and receive
CTS from the remote modem. When jumper 2 is
installed the local modem will accept the RTS
signal from the local device; then, after a
selectable delay, will provide a CTS signal
output to the local device. Jumper 2 will also
loop the CTS signal (from the remote modem)
back as the RTS signal. Strap shall be set
to pos. 1 for the CAMPS application.
If the fiber optic modems are used to link
a terminal with a communications device such
as a long-haul modem) both modems should be
wired to the jumper 1 option and the fiber
optic modem/long-haul modem RTS/CTS interface
should be reversed. With this configuration,
the fiber optic modems will appear fully transparent
since the long-haul modem will establish the
RTS/CTS delay for the terminal.
An alternate method would be set the local
modem to option 1 and the remote modem to option
2. With this configuration, the RTS/CTS delay
for the local device would be equal to the
propagation delay throgh the fiber optic link.
The RTS/CTS delay for the remote device would
be established by the remote fiber optic modem.
7) 3̲/̲4̲
The modem is designed to be operated with an
external Control In signal. If an external
control signal is not required, the input may
be strapped to a steady high to provide "true"
DSR output at the remote modem. Insert strap
3 when the external cotnrol signal is used
and insert strap 4 to provide a steady high
on the input. Strap 4 shall be mounted for
the CAMPS application.
7̲/̲8̲/̲9̲
These three straps are used to select different
output signals. With strap 7 installed the
Control in signal from the remote modem will
be applied as the DSR output. With strap 8
installed the Control in signal will be aplied
as the Conrol Out. And with strap 9 installed
the DTR input from the remote modem will be
applied as the DSR and DCD outputs. Strap 9
shall be mounted for the CAMPS application.
d) M̲e̲c̲h̲a̲n̲i̲c̲a̲l̲ ̲a̲n̲d̲ ̲E̲l̲e̲c̲t̲r̲i̲c̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲s̲ ̲f̲o̲r̲ ̲t̲h̲e̲
̲O̲M̲2̲ ̲M̲o̲d̲u̲l̲e̲
M̲e̲c̲h̲a̲n̲i̲c̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲s̲
Height: 225 mm ( 5U)
Lenght: 305 mm (excl. fiber optic connectors)
Width: 17,5 mm ( 1M)
E̲l̲e̲c̲t̲r̲i̲c̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
Supply Voltage Supply Current
18 VacRMS,50Hz 1A RMS
e) T̲h̲e̲ ̲O̲M̲3̲ ̲O̲P̲T̲O̲ ̲T̲R̲A̲N̲S̲C̲E̲I̲V̲E̲R̲
The OM3 is a circuit card assembly, designed to
be installed in CAMPS MSPs. The OM3 module is designed
to operate asynchronously up to 19.2 kBaud, providing
full duplex operation over two fiber optic cables.
It also provides a full duplex path for 3 separate
control signals which are multiplexed along with
the data.
Electrical Signal interfaces (MIL OR EIA) are provided
through a 40 pin male AMP connector. This connector
is wired as shown in figure 5.3.3.2-3.
The fiber optic interface is provided via two fiber
optic connectors, 1/4-36 threaded couplers.
AMP CIRCUIT SIGNAL NAME
CONNECTOR NO
PIN NOs CCITTV24
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
̲ ̲ ̲ ̲ ̲ ̲
1 N/A Not used
2,3 N/A Control in (input)
4,10 103 Transmit Data
(input)
5 N/A Not used
6 104 Receive Data
(output)
7,31 105 Request to send
(input)
8 N/A Not used
9 106 Clear to Send
(output)
11 107 Data Set Ready
(output)
12/33 108.2 Data Terminal
Ready (input)
13,24 102 Signal ground
14 N/A Not used
15,29 102 Signal ground
16,17 N/A Not used
18,19 N/A Strapped together
20,23 N/A Not used
25,26 N/A Not used
27,32 102 Signal ground
28,30 N/A Not used
34-40 N/A Not used
Figure 5.3.3.2-3
Electrical Signal Interface
The different operating options associated with
the OM3 are selected by soldered straps on the
PCB (Printed Circuit Board).
1) E̲I̲A̲/̲M̲I̲L̲:̲
These two jumpers are used to select the desired
sense logic (Negative mark for MIL or positive
mark for EIA (V28)) on the Transmit Data input
and the Receive Data output. CAMPS application
requires strap EIA installed.
2) 1̲/̲2̲:̲
These two sets of jumpers are used to select
different RTS/CTS operating modes. When jumper
1 is installed the local fiber optic modem
will transmit RTS to the remote modem and receive
CTS from the remote modem. When jumper 2 is
installed the local modem will accept the RTS
signal from the local device; then, after a
selectable delay, the local modem will provide
a CTS signal output to the local device. Jumper
2 will also loop the CTS signal (from the remote
modem) back as the RTS signal.
If the fiber optic modems are used to link
a terminal with a communications device (such
as a long-haul modem) both modems should be
wired to the jumper 1 option and the fiber
optic modem/long-haul modem RTS/CTS interface
should be reversed. With this configuration,
the fiber optic modems will appear fully transparent
since the long-haul modem will establish the
RTS/CTS delay for the terminal.
An alternate method would be to set the local
modem option 1 and the remote modem to option
2. With this configuration the RTS/CTS delay
for the local device would be equal to the
propagation delay through the fiber optic link.
The RTS/CTS delay for the remote device would
be established by te remote fiber optic modem.
The CAMPS application requires the strap in
position 2. (For the Remote Terminal option
the strap should be in pos. 1).
3) 3̲/̲4̲
The modem is designed to be operated with an
external Control in signal. If an external
control signal is not required, the input may
be strapped to a steady high to provide a "true"
DSR output at the remote modem. Insert strap
3 when the external control signal is used
and insert strap 4 to provide a steady high
on the input.
For the CAMPS application (incl. the Remote
terminal option) this strap should be in pos.
4.
4) 5̲/̲6̲/̲7̲
These three straps are used to select different
output signals. With strap 5 installed the
Control in signal from the remote modem will
be aplied as the DSR output. With strap 6 installed
the Control in signal will be applied as the
Control Out. And with strap 7 installed the
DTR input from the remote modem will be aplied
as the DSR and DCD outputs.
CAMPS application (incl. the Remote Terminal
option) requires this strap to be in pos. 7.
f) M̲e̲c̲h̲a̲n̲i̲c̲a̲l̲ ̲a̲n̲d̲ ̲E̲l̲e̲c̲t̲r̲i̲c̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲s̲ ̲f̲o̲r̲ ̲t̲h̲e̲
̲O̲M̲3̲
M̲e̲c̲h̲a̲n̲i̲c̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
Height: 203 mm
Length: 191 mm
Width: 25,4 mm
E̲l̲e̲c̲t̲r̲i̲c̲a̲l̲ ̲S̲p̲e̲c̲i̲f̲i̲c̲a̲t̲i̲o̲n̲
Supply voltage Supply current
10VacRMS,50Hz 1A RMS
5.3.3.3 T̲h̲e̲ ̲A̲d̲a̲p̲t̲e̲r̲ ̲C̲r̲a̲t̲e̲
The signal adaption modules mentioned in the two previous
paragraphs are housed in two different crate assemblies:
a) Signal adaptor modules belonging to the DEC (Data
Exchange Channel) of a LTUX-S are placed in the
same TU (TDX Unit) as the LTUX-S.
b) Signal adaptor modules belonging to the DEC of
a LTU are placed in the Adapter Crate. The Adapter
Crate also houses 2 signal adaptor modules (OPTOTRANSCEIVERS)
which performs signal adaption between the WDP
(Watchdog Processor Unit) and the Operator position
MSP and VDU.
The Adaptor Crate is build around a standard CR80S
19" frame, the CTX crate.
The CTX crate consists of a front and a rear crate.
On the back panel of the front crate is a bus motherboard
for module interconnection. The motherboard also contains
edgeconnectors for front crate mounted modules and
rear crate mounted Back Panels. Motherboard connector
signals, applicable for the Adapter Crate, are shown
in fig. 5.2.2.2-2 sheets 3-6 (section 5.2).
The Adapter Crate houses up to 8 signal adaptor modules
(OM2s and V24/V28(L/L) type 2) in the front crate and
in the rear crate 2 Back Panels type 8 and 2 Adaptor
Power Supplies. The Adapter Crate (front and rear)
is shown in fig. 5.3.3.3-1. Modulepositions in the
front crate are restricted to those shown on the figure.
In the Remote Terminal application the Adapter Crate
houses the 4 channel V24/V28(L/L) adapter type 1.
Signal adaptors in positions 7-10 are powered from
the Adaptor Power Supply #1 in the rear crate.
Signal adaptors in positions 15-16 are powered from
the Adaptor Power Supply #2 in the rear crate.
Each Adapter Power Supply is able to deliver 2 times
9 Vac RMS at 4.2 A RMS. Fig. 5.3.3.3-2 shows the principle
of the Adaptor Power Supply
Fig. 5.3.3.3-1
T̲H̲E̲ ̲A̲D̲A̲P̲T̲E̲R̲ ̲C̲R̲A̲T̲E̲
Fig. 5.3.3.3-2
T̲H̲E̲ ̲A̲D̲A̲P̲T̲O̲R̲ ̲P̲O̲W̲E̲R̲ ̲S̲U̲P̲P̲L̲Y̲
Signals from the CU LTUs and from the WDPs WCA are
connected to the motherboard via the two Back Panels
type 8 (BP8). Fig. 5.3.3.3-3 showsm the BP8 principle
(1 channel out of 4), and fig. 5.3.3.3-4 identifies
the LTU/LIA-N and WCA connections.
Fig. 5.3.3.3-3
T̲H̲E̲ ̲B̲P̲8̲,̲ ̲1̲ ̲C̲H̲A̲N̲N̲E̲L̲
Fig. 5.3.3.3-4(sheet 1 of 2)
L̲T̲U̲/̲L̲I̲A̲-̲N̲-̲W̲C̲A̲ ̲C̲O̲N̲N̲E̲C̲T̲I̲O̲N̲S̲
Fig. 5.3.3.3-4(sheet 2 of 2)
L̲T̲U̲/̲L̲I̲A̲-̲N̲-̲W̲C̲A̲ ̲C̲O̲N̲N̲E̲C̲T̲I̲O̲N̲S̲
5.3.4 T̲e̲s̲t̲ ̲o̲f̲ ̲D̲i̲s̲t̲r̲i̲b̲u̲t̲i̲o̲n̲ ̲E̲q̲u̲i̲p̲m̲e̲n̲t̲
As described in the previous sections a Data Exchange
Channel (DEC), no matter of which category, is implemented
using the same basic structure, the line termination
unit/distribution equipment structure.
When troubleshooting a DEC, two immediate test points
are available. The first is the connection between
the DEC and the connected Terminal/external equipment.
Disconnecting and testing the DEC at this point, by
means of test equipment and off-line M&D S/W, the error
can be related to either the terminal/external equipment
or the DEC. This test can be performed without opening
the CAMPS Tempest enclosure.
The second test point is the monitoring facility. To
access this it will be necessary to open the tempest
enclosure. Testing communication at this point relates
an error to either the line termination unit or the
distribution equipment.
More specific test methods and strategies are described
in the CAMPS MAINTENANCE PLAN CPS/PLN/006, section
2.4.4.3.
5.3.5 A̲P̲P̲E̲N̲D̲I̲X̲ ̲A̲
Definition of applied V24 circuits, and connection
layout.
(Ref. table 5.3.2-4)
5.3.5.1 V̲2̲4̲ ̲C̲i̲r̲c̲u̲i̲t̲ ̲D̲e̲f̲i̲n̲i̲t̲i̲o̲n̲s̲
C̲i̲r̲c̲u̲i̲t̲ ̲1̲0̲1̲ ̲-̲ ̲P̲r̲o̲t̲e̲c̲t̲i̲v̲e̲ ̲G̲r̲o̲u̲n̲d̲ ̲o̲r̲ ̲E̲a̲r̲t̲h̲
This conductor shall be electrically bonded to the
machine or equipment frame. It may be further connected
to external grounds as required by applicable regulations.
C̲i̲r̲c̲u̲i̲t̲ ̲1̲0̲2̲ ̲-̲ ̲S̲i̲g̲n̲a̲l̲ ̲G̲r̲o̲u̲n̲d̲ ̲o̲r̲ ̲C̲o̲m̲m̲o̲n̲ ̲R̲e̲t̲u̲r̲n̲
This conductor establishes the signal common reference
potential for unbalanced interchange circuits in the
100-series between data circuit-terminating equipment
and data terminal equipment.
C̲i̲r̲c̲u̲i̲t̲ ̲1̲0̲3̲ ̲-̲ ̲T̲r̲a̲n̲s̲m̲i̲t̲t̲e̲d̲ ̲D̲a̲t̲a̲
Direction: TO data circuit-terminating equipment.
The data signals originated by the data terminal equipment,
to be transmitted via the data channel to one or more
remote data stations, are transferred on this circuit
to the data circuit-terminating equipment.
Figure 5.3.2.5-1…01…Data Exchange Channel - Category 5
C̲i̲r̲c̲u̲i̲t̲ ̲1̲0̲4̲ ̲-̲ ̲R̲e̲c̲e̲i̲v̲e̲d̲ ̲D̲a̲t̲a̲
Direction: FROM data circuit-terminating equipment
The data signals generated by the data circuit-terminating
equipment, in response to data channel line signals
received from a remote data station, are transferred
on this circuit to the data terminal equipment.
C̲i̲r̲c̲u̲i̲t̲ ̲1̲0̲5̲ ̲-̲ ̲R̲e̲q̲u̲e̲s̲t̲ ̲t̲o̲ ̲S̲e̲n̲d̲
Direction: TO data circuit-terminating equipment
Signals on this circuit control the data channel transmit
function of the data circuitterminating equipment
The ON condition causes the data circuit-terminating
equipment to assume the data channel transmit mode.
The OFF condition causes the data circuit-terminating
equipment to assume the data channel non-transmit mode,
when all data transferred on Circuit 103 (Transmitted
data) have been transmitted.
C̲i̲r̲c̲u̲i̲t̲ ̲1̲0̲6̲ ̲-̲ ̲R̲e̲a̲d̲y̲ ̲f̲o̲r̲ ̲S̲e̲n̲d̲i̲n̲g̲
Direction: FROM data circuit-terminating equipment
Signals on this circuit indicate whether the data circuit-terminating
equipment is conditioned to transmit data on the data
channel.
The ON condition indicates that the data circuit-terminating
equipment is conditioned to transmit data on the data
channel.
The OFF condition indicates that the data circuit-terminating
equipment is not prepared to transmit data on the data
channel.
C̲i̲r̲c̲u̲i̲t̲ ̲1̲0̲7̲ ̲-̲ ̲D̲a̲t̲a̲ ̲S̲e̲t̲ ̲R̲e̲a̲d̲y̲
Direction: FROM data circuit-terminating equipment
Signals on this circuit indicate whether the data circuit-terminating
equipment is ready to operate.
The ON condition indicates that the signal-conversion
or similar equipment is connected to the line and that
data circuit-terminating equipment is ready to exchange
further control signals with the data terminal equipment
to initiate the exchange of data.
The OFF condition indicates that the data circuit-terminating
equipment is not ready to operate.
C̲i̲r̲c̲u̲i̲t̲ ̲1̲0̲8̲/̲2̲ ̲-̲ ̲D̲a̲t̲a̲ ̲T̲e̲r̲m̲i̲n̲a̲l̲ ̲R̲e̲a̲d̲y̲
Direction: TO data circuit-terminating equipment
Signals on this circuit control switching of the signal-conversion
or similar equipment to or from the line.
The ON condition, indicating that the data terminal
equipment is ready to operate, prepares the data circuit-terminating
equipment to connect the signal conversion or similar
equipment to the line and maintains this connection
after it has been established by supplementary means.
The data terminal equipment is permitted to present
the ON condition on Circuit 108/2 whenever it is ready
to transmit or receive data.
The OFF condition causes the data circuit-terminating
equipment to remove the signal-conversion or similar
equipment from the line, when the transmission to line
of all data previously transferred on Circuit 103 has
been completed.
C̲i̲r̲c̲u̲i̲t̲ ̲1̲0̲9̲ ̲-̲ ̲D̲a̲t̲a̲ ̲C̲h̲a̲n̲n̲e̲l̲ ̲R̲e̲c̲e̲i̲v̲e̲d̲ ̲L̲i̲n̲e̲ ̲S̲i̲g̲n̲a̲l̲ ̲D̲e̲t̲e̲c̲t̲o̲r̲
Direction: FROM data circuit-terminating equipment.
Signals on this circuit indicate whether the received
data channel line signal is within appropriate limits,
as specified in the relevant recommendation for data
circuit-terminating equipment.
The ON condition indicates that the received signal
is within appropriate limits.
The OFF condition indicates that the received signal
is not within appropriate limits.
C̲i̲r̲c̲u̲i̲t̲ ̲1̲1̲3̲ ̲-̲ ̲T̲r̲a̲n̲s̲m̲i̲t̲t̲e̲r̲ ̲S̲i̲g̲n̲a̲l̲ ̲E̲l̲e̲m̲e̲n̲t̲ ̲T̲i̲m̲i̲n̲g̲ ̲(̲D̲a̲t̲a̲
̲T̲e̲r̲m̲i̲n̲a̲l̲ ̲E̲q̲u̲i̲p̲m̲e̲n̲t̲ ̲S̲o̲u̲r̲c̲e̲)̲
Direction: TO data circuit-terminating equipment.
Signals on this circuit provide the data circuit-terminating
equipment with signal element timing information.
The condition on this circuit shall be ON and OFF for
nominally equal periods of time, and the transition
from ON to OFF condition shall nominally indicate the
centre of each signal element on Circuit 103 (Transmitted
data).
C̲i̲r̲c̲u̲i̲t̲ ̲1̲1̲4̲ ̲-̲ ̲T̲r̲a̲n̲s̲m̲i̲t̲t̲e̲r̲ ̲S̲i̲g̲n̲a̲l̲ ̲E̲l̲e̲m̲e̲n̲t̲ ̲T̲i̲m̲i̲n̲g̲ ̲(̲D̲a̲t̲a̲
̲C̲i̲r̲c̲u̲i̲t̲-̲T̲e̲r̲m̲i̲n̲a̲t̲i̲n̲g̲ ̲E̲q̲u̲i̲p̲m̲e̲n̲t̲ ̲S̲o̲u̲r̲c̲e̲)̲
Direction: FROM data circuit-terminating Equipment
Signals on this circuit provide the data terminal equipment
with signal element timing information.
The condition on this circuit shall be ON and OFF for
nominally equal periods of time. The data terminal
equipment shall present a data signal on Circuit 103
(Transmitted data) in which the transitions between
signal elements nominally occur at the time of the
transitions from OFF to ON condition of Circuit 114.
C̲i̲r̲c̲u̲i̲t̲ ̲1̲1̲5̲ ̲-̲ ̲R̲e̲c̲e̲i̲v̲e̲r̲ ̲S̲i̲g̲n̲a̲l̲ ̲E̲l̲e̲m̲e̲n̲t̲ ̲T̲i̲m̲i̲n̲g̲ ̲(̲D̲a̲t̲a̲
̲C̲i̲r̲c̲u̲i̲t̲-̲T̲e̲r̲m̲i̲n̲a̲t̲i̲n̲g̲ ̲E̲q̲u̲i̲p̲m̲e̲n̲t̲ ̲S̲o̲u̲r̲c̲e̲
Direction: FROM data circuit-terminating equipment.
Signals on this circuit provide the data terminal equipment
with signal element timing information.
The condition of this circuit shall be ON and OFF for
nominally equal periods of time, and a transition from
ON to OFF condition shall nominally indicate the centre
of each signal element on Circuit 104 (Received data).
5.3.5.2 C̲o̲n̲n̲e̲c̲t̲i̲o̲n̲ ̲L̲a̲y̲o̲u̲t̲ ̲(̲C̲A̲N̲N̲O̲N̲ ̲C̲C̲I̲T̲T̲ ̲V̲2̲4̲)̲
Fig. 5.3.5.2-1 shows correspondence between applicable
V24 circuits and pin numbers in the 25 poled CANNON
D-connectors used
V24 CIRCUIT PIN NO. (MALE AND FEMALE)
̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲ ̲
102 7
103 2
104 3
105 4
106 5
107 6
108.2 20
109 8
113 24
114 15
115 17
FIGURE 5.3.5.2-1…01…V̲2̲4̲ ̲C̲I̲R̲C̲U̲I̲T̲ ̲T̲O̲ ̲C̲A̲N̲N̲O̲N̲ ̲P̲I̲N̲ ̲N̲U̲M̲B̲E̲R̲ ̲C̲O̲N̲V̲E̲R̲S̲I̲O̲N̲ ̲T̲A̲B̲L̲E̲
