TCONI magazine
------------------------------------------------------------------------
The TCONI magazine contains Cable Connect Boards (CCB) and
is used for connection to PCD, ACCS, SULT and external
instruments.
+---+
| |
| | Analogue GSD
| | equipment +------+
| |____ | |
| |____| | |
| | | ___________| PCD |
| | | | | |
+---+ | | +------+
+------------+ +-------------+
| ACCS | | TCON |
+------------+ +-------------+
| | |_________________| | | | |
| |_____________________| | | |
|_________________________| | |________ Instrument
| input
+--------+
| SULT |
+--------+
------------------------------------------------------------------------
The following flow chart is a summary of the rest of this instruction, the
numbers in the chart give the section number in this document which should
be referred to for more details.
+-----+
|START|
+-----+
|
+---+
|5.1| Connection of TCONI
+---+
|
+---+
|5.2| Strapping
+---+
|
+---+
|5.3| Check of data
+---+
|
+---+
|6.1| Test of TCONI
+---+
|
+----+
|STOP|
+----+
------------------------------------------------------------------------
CONNECTION
LAYOUT OF TCONI-MAGAZINE (BFD 114 010/2-3)
_____________________ ______________________
| 01 |____|____|_|____|____| HC (ROF 137 1159/1)
| |_____________________|
| 03 |____|____|_|____|____| HC (ROF 137 1159/1)
BFD 114 010/3 |_____________________|
| 05 |____|____|_|____|____| LOAJ (ROF 131 672/1)
|
| ____________ |_____________________|
| | 13 |____|____|_|____|____| CCB (ROF 131 038/1)
| | 14 |____|____|_|____|____| CCB (ROF 131 038/1)
| BFD 114 010/2 15 |____|____|_|____|____| CCB (ROF 131 038/1)
| | 16 |____|____|_|____|____| CCB (ROF 131 038/1)
| | 17 |____|____|_|____|____| CCB (ROF 131 038/1)
| | 18 |____|____|_|____|____| CCB (ROF 131 038/1)
| | 19 |____|____|_|____|____| CCB (ROF 131 038/1)
| | 20 |____|____|_|____|____| CCB (ROF 131 038/1)
| | 21 |____|____|_|____|____| CCB (ROF 131 038/1)
| | 22 |____|____|_|____|____| CCB (ROF 131 038/1)
| | 23 |____|____|_|____|____| CCB (ROF 131 038/1)
| | |_____________________|
|_________|____________ |_____________________|
------------------------------------------------------------------------
TCON MAGAZINE Connections
TCON MAGAZINE
RRRR 0 TO TEST BOX 28
(Receive pair)
* 1 29
TO PCD
(CHURs) RRRR 2
3
IB9
Cables
TTTT 0 TO TEST BOX 28
(Transmit pair)
* 1 29
FROM PCD
(CHUTs) TTTT 2
3
13 14 15 16 17 23 <BOARD POSITION
There are 30 available positions for Test Boxes.
The MUP position is usually SNTPCD32-X-0, but it depends
on whether the TCON takes up a full PCD by itself or is
connected over 2 different PCDs. The RR/TT cables marked *
are the ones which connect postions 0-7 to the PCD and these
are the most commonly used.
Note : The TCON magazine is just a connection field, and has
no software associated with it. The TCON devices referred to
in the section on TCON route data are purely software, and
do not correspond to the physical TCON magazine. The purpose
of this magazine is essentially similar to that of an ALRANG,
in that it spreads all the pairs in a cable (TT/RR) over a
backplane so that each pair has its own 1/4 plug position in
that backplane. In this way each KEP test box can be given
its own unique cable which starts as a Cannon connector and
splits into a transmit and receive 1/4 plug.
Note : The cable to the KEP box is wired as follows :
1/4 plug A positions A02,A04 to Tag 1 and 14 in the Cannon.
1/4 plug B positions A02,A04 to Tag 4 and 17 in the Cannon.
------------------------------------------------------------------------
KEP BOX Connections
FRONT VIEW OF KEP 802 101
TE TE 1
tip () tip () ()
() () ()
COAX INF COAX INF
ring ring 2
RECEIVE GS TRANSMIT SS DDF
ANALOG
Connect the Connect the DIGITAL
Receive Leads Transmit Leads (via PCDD)
of the meter. of the meter.
There are both COAX and Tip/RING
sockets for receive and transmit.
Use whichever is convenient.
The switches have the following meaning.
TE ==> 600 Ohms termination.
INF ==> Infinite termination i.e. not terminated.
There are two ways to terminate the KEP and meter. The idea is
is to avoid double termination, or to bridge the meter to
compensate for double termination. Bridging adds 6dB to the
signal level reading, double termination causes a 6 dB loss.
EITHER :
A) The switch on the KEP should be set to infinity (down), and the
meter should be set to 600 Ohms unbridged termination.
or
B) The switch on the KEP should be set to terminated (up), and the
meter should be set to 600 Ohms bridged termination.
------------------------------------------------------------------------
REAR VIEW OF KEP 802 101
FINE DIGITAL
CALIBRATION INSTRUMENT
1 T () R() ___________
DDF /___________)
_____________ ___________
/_____________) /___________)
2 TCON PCDD
^ ^
Cable to TCON Cable to PCDD
(CANNON CONNECTOR) (CANNON CONNECTOR)
The fine calibation screws are used to calibrate the transmit (T) and
receive (R) directions for analog test measurments. They have the
following characteristics.
Fully Counter Clockwise ==> > 7dB attenuation.
Centre position ==> ~ 4dB attenuation.
Fully Clockwise ==> < 1dB attenuation.
1st pair 2nd pair 3rd pair 4th pair
CHUT CHUR CHUT CHUR CHUT CHUR CHUT CHUR
01*A S
02*A N
03*A TT TT TT TT T
04*A TT TT TT TT P
C
01*B RR RR RR RR D
02*B RR RR RR RR 3
03*B 2
04*B
Channels Channels Channels Channels Other cards
07 815 1623 2431 like TPLU to GS.
<><><><>
SNTPCD32 X0 X8 X16 X24
The devices are address in the format SNTPCD32-X-Y where
X is the PCD pointer and Y is the channel pointer within
the PCD, e.g. the first channel on PCD 0 would be SNTPCD32-0-0.
The half plug connectors TT and RR in the above diagram have
the transmit and receive connections for 8 devices in the
other magazine to which they are connected. When defining
the test position, check which PCD the TCON is connected
to and also check which chut/chur cards it goes to. e.g.
say it is connected to the 3rd & 4th channel card pairs in
SNTPCD32-1, then the test position would be at SNTPCD32-1-16.
------------------------------------------------------------------------
A position consists of a terminal, a phone known as the operator
phone (the BNB in command EXTPI), and a KEP 802 001 test box, which
allows Analog frequency and level meters to be connected to the switch.
The KEP is connected to a TCON magazine, which can have up to 30 KEPs
connected to it. The TCON connects to a PCD, which does the D/A, A/D
and PCM conversions of signals from and to the group switch. The purpose
of the test position is to enable measurements of frequencies and
levels of tones from testlines in other offices, and hence determine
the quality of the transmission on the trunks to the other switch.
TEST BOX TCON PCD GS
Analog Rx Rx Rx
meter========== c ========1/4 ======= (COI) Test
a ========plugs IB9s ... Line
Tone Tx n Tx ======= >
Generator====== o Tx :
n :(CON)
:
KEP 802 001 OPERATOR
PHONE
<ANALOGUE><DIGITAL>
Where Tx = 2 wire transmit
Rx = 2 wire receive
The cables from the TCON (split 1/4 plugs) join into a single
canon connector at the KEP BOX, and plug in the slot marked TCON.
Cables from a PCD-D (position 5 and 6) join into a single canon
connector at the KEP and plug into the slot marked PCDD. This is
used to enable connection of digital testing instruments.
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