Appendix B - Functional Operation; H2Tu-C-319 List 4E Block Diagram - ADC HiGain H2TU-C-319 List 4E User Manual

Appendix B - Functional Operation

A
PPENDIX
ADC HDSL2 technology provides full-duplex services at standard DS1 rates over copper wires between an
H2TU-C and an H2TU-R, which comprise one HiGain HDSL2 system. HiGain HDSL2 systems use ADC
Overlapped Pulse Amplitude Modulation (PAM) Transmission with Interlocking Spectra (OPTIS) transceiver
systems to establish full-duplex, 1.552 kbps data channels between the H2TU-C and a remotely located H2TU-R.
Figure 36 shows a block diagram of the H2TU-C. The H2TU-C receives a 1.544 Mbps DSX-1 data stream from
the DSX-1 digital cross connect interface. The H2TU-C contains a DS1 frame synchronizer controlled by an 8-bit
microprocessor that determines the type of framing on the DS1 stream and synchronizes to it. The H2TU-C
recognizes Superframe (SF), including D4, or Extended Superframe (ESF) framing.
IN
D
A
S
U
X
X
-
1
OUT
HMU control
D
M S
U X
X -
1
Frame GND J
LOS Alarm Bus H
-48 V BATT. 8
GND 5
Fuse Alarm 10
72
B - F
UNCTIONAL
S1
M
R
1
E
q
A
A
s
T
u
u
19
e
C
a
x
l
l
R1
e
M
2
i
L
c
z
I
t
T1
e A
U
20
C
(a)
r
User option
Mode SEL
(ACO)
S3
ADS1
Micro Option
7
control
Status RS-232
M
T
R
E
1
e
q M
A
s
IN
s
u U
T
e
C
t
A
a X
l
(MUX)
l
M
e
J
R1
L
2 i
c
a
z I
t
OUT
c
e U
T1
k C
B
(a)
r
s
S3
(a) Depends on setting of the ADS1 option
M = MUX or SPTF
A = Auxiliary
C = CTHR (Cut-through) or SPTE
Figure 36. H2TU-C-319 List 4E Block Diagram
January 9, 2002
O
PERATION
H2TU-C-319, L4E
LOS
AIS
F
r
a
I/O
m
T1
e
Payload
r
MONF
A
MONE
MONF = Monitor Facilities
MONE = Monitor Equipment
SPTF = Split Facilities
SPTE = Split Equipment
LTPH-UM-1049-02, Issue 2
H
D
S
L
S3
2
R
T
r
9
a
T HDSL2 SPAN
n
K
s
c
e
i
v
e
r
H2TU-C-319 List 4E