| Digital
Multiplexer Model MK-5
 |
It
is intended for “distribution” of E1/T1 on 5 directions at 6
channels E&M with 1 CAS “rural” with HDSL-line code signal (or
TC-PAM16). It is used for networking of ISC digital station
(DS) ( (Si 2000 and others) and analog digital intermediate
and remote stations (analog ATE), and also it can be used for
connection of several automatic telephone exchanges (ATE) one
unit of a network it is direct to multiplexers of fibre-optical
networks (PDH or SDH).
MK-5 can be
rigged up as at the most central office (CO), and taken out
on intermediate stations with the help of transmission systems
or it is rigged up as a regenerator.
On the remote
stations in quality of remote half kit of multiplexer, remote
half kit of 6 channels E&M IKM-6SL(PCM) are applied. The
length of regeneration section (one pair of cable with S=1,2
mm2) no less than 20 km. There are only four regenerators and
no more which are provided with energy from ATE side (two from
each side).
Cost of MK-5: 3 415 $ USD |
Technical characteristics of
MK-5
Characteristics
of interface 2048 kbps |
Recommendation
ITU-I |
G.703, G.736 |
| Rate of transmission |
2048 kbps |
| Line code |
HDB3 or AMI |
| Entrance resistance |
120 Om (symmetrical), 75 Om (asymmetrical) |
Number of
channels |
5 to 384 kbps |
Type of
remote kits |
|
Subscriber’s
loop (TC-PAM16) |
IKM-6A (6 channels at 64 kbps) |
Connecting
loop (TC PAM16) |
IKM-6SL (6 channels at 64 kbps) |
Attenuation
of a signal between remote half kit IKM–6SL (A) and port of
MK-5 taking place in CO in a code |
HDB3 |
no more 43 dB at frequency 1024 kHz |
| TC-PAM16 |
no more 43 dB at frequency 70 kHz |
Quantity
of copper twisted pairs of cable, necessary for realization
of connection between remote IKM-6SL (A) and port of MK-5 |
HDB3 |
2 |
| TC-PAM16 |
1 |
Power
supply |
Input voltage |
-36...-72 V |
| Power consumption |
no more 10 W |
Dimensions
(W x D x H) |
19" x 230 mm x 65 mm |
Example
of application
| Dividing E1(T1)
and transmission to 5 directions at 6 channels (512 kbp) at
distance up to 80 km (at use up to 4 NRP1-512/Repeater) at one
pair of cable with S = 1,2 mm2. |
Normative Documentation
|
