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3570-mdc.ib.rev2.doc Page 1 of 13 17/10/2007
IRT Eurocard
Type MDC-3570
ASI/G.703 to G.703/ASI
Network Interface Adapter
Designed and manufactured in Australia
IRT can be found on the Internet at:
http://www.irtelectronics.com
I R T Electronics Pty Ltd A.B.N. 35 000 832 575
26 Hotham Parade, ARTARMON N.S.W. 2064 AUSTRALIA
National: Phone: (02) 9439 3744 Fax: (02) 9439 7439
International: +61 2 9439 3744 +61 2 9439 7439
Email: sales@irtelectronics.com
Web: www.irtelectronics.com
IRT Communications
www.irtcommunications.com
3570-mdc.ib.rev2.doc Page 2 of 13 17/10/2007
IRT Eurocard
Type MDC-3570
ASI/G.703 to G.703/ASI
Network Interface Adapter
Instruction Book
Table of Contents
Section Page
Operational Safety 2
General Description 3
Technical Specifications 4
Technical Description 5
Table 1.1: Input Rate for Valid G.703 Output 5
Configuration 6
Installation 7
Front and rear layouts 8
Operation 9
Front Panel Indicators 9
Processing controls 10
Maintenance & Storage 11
Warranty & Service 11
Equipment return 11
Characteristics of signal types 12
Coding characteristics 12
G.703 12
Drawing List Index 13
This instruction book applies to units later than S/N 0303001.
Operational Safety:
WARNING
Operation of electronic equipment involves the use of voltages and currents that
may be dangerous to human life. Note that under certain conditions dangerous
potentials may exist in some circuits when power controls are in the OFF position.
Maintenance personnel should observe all safety regulations.
Do not make any adjustments inside equipment with power ON unless proper
precautions are observed. All internal adjustments should only be made by suitably
qualified personnel. All operational adjustments are available externally without the
need for removing covers or use of extender cards.
IRT Communications
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3570-mdc.ib.rev2.doc Page 3 of 13 17/10/2007
IRT Eurocard
Type MDC-3570
ASI/G.703 to G.703/ASI
Network Interface Adapter
General Description
The MDC-3570 is part of a family of data transcoders for converting between the commonly used MPEG2
Transport Stream formats in the broadcast industry for video distribution.
The MDC-3570 can operate at ASI rates from2 Mb/s to 50 Mb/s. When set up for encoding, it can perform 188 to
204 byte conversion, scrambling, RS encoding and interleaving. When set up for decoding, it can perform
de-interleaving, RS correction, descrambling and 204 to 188 byte conversion. All functionality is switch or link
selectable.
The adapters find particular application interfacing for DVB-S applications such as in CATV/SMATV Headends
where equipment from different manufacturers uses different interfaces or where connection to test equipment is
required from various sources.
The MDC-3570 accepts ASI or G.703 input formats, and always provides an ASI output. G.703 input and output is
selectable between DS3 (44.736 Mb/s) and E3 (34.368 Mb/s). G.703 output is provided if the input ASI or G.703
stream is at the correct DS3 or E3 rate (accounting also for rate conversion).
The MDC-3570 is fabricated in IRT’s standard Eurocard format and may be housed in a variety of IRT’s frames.
Standard features:
• ASI to ASI/G.703 or G.703 to ASI/G.703 conversion.
• Reed Solomon insertion & correction.
• Interleaving or de-interleaving.
• Scrambling or de-scrambling.
• Packet length indication.
• Supplement to test equipment.
• 188 to 204 & 204 to 188 byte conversion, where appropriate.
MDC-3570
Scramblin
g
Reed-Solomon
Insert
Convolutional
Interleaver
Alarms & Indications
RS ERROR
Convolutional
De-Interleaver Reed-Solomon
Correction De-Scrambling
10B
8B
Line
Interface
8B
10B
Inputs
(270 Mb/s) coax
ASI-C
Outputs
G.703
(270 Mb/s) coax
ASI-C
G.703 E3 (34Mb/s)
DS3 (45Mb/s) Selectable
SCRAMBLED
RS PRESENT
G.703 OUTPUT
188 BYTE BLOCK
204 BYTE BLOC
K
SYNC ERROR
RS ERRORS
INPUT LOSS
Line
Interface
IRT Communications
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3570-mdc.ib.rev2.doc Page 4 of 13 17/10/2007
Technical Specifications
IRT Eurocard module
Type/s MDC-3570
Input :
Type 1 x ASI, 75Ω BNC connector, or
1 x G.703, 75Ω BNC connector, link selectable.
ASI Rate 2 Mb/s to 50 Mb/s
G.703 Rate E3 (34.368 Mb/s) or DS3 (44.736 Mb/s), selectable.
Outputs :
Type 1 x ASI-C 75Ω, 800 mVp-p, BNC connector.
(Burst or distributed (continuous) – link selectable)
1 x G.703, 75Ω BNC connector.
HDB3 at 34 Mb/s or B3ZS at 45 Mb/s, selectable
dependent on output rate equalling desired G.703 rate.
(Output rate also dependent on input rate and if 188 to 204
or 204 to 188 processing enabled)
Alarms:
Major Relay NO/NC link selectable,
(Relay energised when Input Sync is obtained).
Minor Relay NO/NC link selectable,
(Relay energised when Input Sync is obtained and when there
is a valid G.703 output rate).
Power Requirements: 28 Vac CT (14-0-14) or ± 16 Vdc.
Power consumption <5.5 VA.
Connectors:
Other:
Temperature range 0 - 50° C ambient
Mechanical
Finish: Front escutcheon Grey background, black lettering & red IRT logo
Rear assembly Detachable silk-screened PCB with direct mount connectors to
Eurocard and external signals
Dimensions 6 HP x 3 U x 220 mm IRT Eurocard
Standard accessories Rear connector assembly including matching connector for
alarm output.
Optional accessories TME-6 module extender card
Instruction manual.
IRT Communications
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3570-mdc.ib.rev2.doc Page 5 of 13 17/10/2007
Technical Description
The MDC-3570 processes either an ASI or G.703 input (link selectable) and outputs processed ASI-C at the input
data rate. The G.703 output is valid if the output rate corresponds to the selected E3 or DS3 rate.
This module is capable of performing scrambling, de-scrambling, RS encoding, RS decoding, interleaving and de-
interleaving. It can encode as well as decode different MPEG TS formats. The module is normally set up as either a
decoder or an encoder. Certain combinations of functions are inhibited (e.g. de-interleaving of a 188 byte transport
stream with or without 188/204 conversion enabled).
The processing functions are selected using three switches (interleaving, RS coding and scrambling) on the front
panel. Each switch has three positions (up, centre or down).
A switch set to the UP position applies processing to the decoding section.
A switch set to the DOWN position applies processing to the encoding section.
A switch set to the CENTRE position bypasses the decoding and encoding sections.
Applying a function to both the decoder and encoder section simultaneously is prevented mechanically by the
switch.
ASI Output
ASI operates at 270 Mbit/s and uses 8B/10B coding with K28.5 stuffing bytes. The ASI cable output uses a 75 Ohm
BNC connector. An ASI optical link can be used to transport the ASI-C signal via fibre optic cable. See IRT Fibre
link brochures or manuals for further information.
G.703 Output
If the ASI rate at the input and the board links are as defined in Table 1.1 then the G703 output will be enabled. If
the input data rate is outside the specified range then the G703 output will be muted.
Input Rate for valid G.703 Output (kb/s ± 20ppm)
OPERATION E3 (LK1 IN) DS3 (LK1 OUT)
No Rate Adaption (SW4A Off, SW4B
OFF) 34,368 44,736
188 to 204 (SW4A ON, SW4B OFF) 31,672 41,227
204 to 188 (SW4A OFF, SW4B ON) 37,292 48,543
Table 1.1: Input Rate for Valid G.703 Output
Alarm relays
Major Alarm (“Loss of ASI sync”) and Minor Alarm (“Loss of ASI sync” and “No Valid G703 Output”) relay
contacts are available on PL4 of the rear assembly. N/O or N/C contacts to ground are selected by link settings LK5
and LK6.
LED indicators
LED indicators 188 TS Byte length, 204 TS Byte length, RS error, Scram present, RS present are blanked during
Input loss or sync loss.
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3570-mdc.ib.rev2.doc Page 6 of 13 17/10/2007
Configuration
Link settings:
Warning:
Links may be changed without disconnecting power. However, when any link is changed, normal decoding of the
MPEG TS will be disturbed. The time taken before normal decoding resumes is dependent on the decoder in use
and may be up to five seconds.
LK1 - IN: selects E3 operation (34.368 Mb/s) for both input and output.
OUT: selects DS3 operation (44.736 Mb/s) for both input and output.
LK2 - IN: selects G.703 input
OUT: selects ASI input
LK3 - not used
LK4 - not installed
LK5 and LK6 - with link in position A then relay output is configured to be “normally closed”,
with link in position B then relay output is configured to be “normally open”.
LK7 - not installed
Note: “normally open” indicates with the relay energised, the output looks like an open circuit to ground.
With no power to the board, or with relay non-energized, the relay output is short circuit to ground.
Major Alarm - relay energised when Input Sync obtained.
Minor Alarm - relay energised when Input Sync obtained and valid G.703 alarm.
Switch settings:
SW4A ON - 188 to 204 byte conversion enabled
SW4A OFF - 188 to 204 byte conversion disabled
SW4B ON - 204 to 188 byte conversion enabled
SW4B OFF - 204 to 188 byte conversion disabled
SW4C ON - Payload data is evenly distributed in ASI output
SW4C OFF - Payload data in each packet is contiguous in ASI output
SW4D ON - TEI* bit (Transport Error Indicator) set in outgoing stream if an uncorrectible error is
detected.
SW4D OFF - TEI* bit (Transport Error Indicator) in outgoing stream is unchanged.
SW4E ON - R-S led shows both correctible and uncorrectible errors
SW4E OFF - R-S led shows uncorrectible errors only.
SW4F ON - not used
SW4F OFF - not used
SW4G ON - TXLEV for G.703 DS3 is set for distances > 225ft
SW4G OFF - TXLEV for G.703 DS3 is set for distances < 225ft.
SW4H ON - Receiver equaliser (G.703) disabled
SW4H OFF - Receiver equaliser (G.703) enabled
Note that for a 188 byte input signal, SW4A must be ON for full encoding functionality (Reed Solomon,
Interleaving).
CAUTION: Do not have both switches SW4A and SW4B ON at the same time.
* TEI – b7 of byte after sync byte.
If set, indicates current packet contains uncorrectable RS errors.
This bit is set by the MDC-3570 if SW4D is ON, the RS decoder is operating, the current packet has
uncorrectible RS errors, and the output is not scrambled.
IRT Communications
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3570-mdc.ib.rev2.doc Page 7 of 13 17/10/2007
Installation
Pre-installation:
Handling:
This equipment may contain or be connected to static sensitive devices and proper static free handling precautions
should be observed.
Where individual circuit cards are stored, they should be placed in antistatic bags. Proper antistatic procedures
should be followed when inserting or removing cards from these bags.
Power:
AC mains supply: Ensure that operating voltage of unit and local supply voltage match and that correct rating
fuse is installed for local supply.
DC supply: Ensure that the correct polarity is observed and that DC supply voltage is maintained within
the operating range specified.
Earthing:
The earth path is dependent on the type of frame selected. In every case particular care should be taken to ensure
that the frame is connected to earth for safety reasons. See frame manual for details.
Signal earth: For safety reasons a connection is made between signal earth and chassis earth. No attempt should be
made to break this connection.
Installation in frame or chassis:
See details in separate manual for selected frame type.
Input/Output & alarm connections:
ASI & G.703 inputs and ASI & G.703 outputs are by 75Ω BNC connectors on the rear assembly.
Alarm outputs are by a 5-pin Phoenix style screw connector on the rear assembly. Alarms are by relay contacts.
Links LK5 and LK6 set the Major Alarm (Relay 1) and the Minor Alarm (Relay 2) to be N/O or N/C to ground.
The Major Alarm condition is “Loss of ASI sync”.
The Minor Alarm condition is “Loss of ASI sync” and “No Valid G703 Output”.
N1 – not connected.
N2 – not connected.
GND (1)
MAJOR (2)
MINOR (3)
N
2 (5)
N
1 (4)
LK5
B (N/O)
A (N/C)
LK6
B (N/O)
A (N/C)
Relay 1
(energised)
Relay 2
(energised)
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3570-mdc.ib.rev2.doc Page 8 of 13 17/10/2007
Front & rear panel connector diagrams
The following front panel and rear assembly drawings are not to scale and are intended to show connection order
and approximate layout only.
INPUT
ALARM INPUT
SCRAM
SCRAM
REED
SOLOMON
INTER-
LEAVE
UP - DECODE
CENTRE - OFF
DOWN - ENCODE
SYNC 204
R - S
R - S
188
DC
MDC-3570
N140
G.703
ASI
INPUT
G.703
INPUT
G.703
OUTPUT
ASI
OUTPUT
1–GND
2–MAJOR
3–MINOR
4–N1
5–N2
1
2
3
4
5
PL4
SK1
SK2
SK5
SK4
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3570-mdc.ib.rev2.doc Page 9 of 13 17/10/2007
Operation
The MDC-3570 primarily operates in either encode or decode mode. The three front panel switches determine the
coding or decoding operations performed. All outputs contain the same coded information. Not all combinations of
encoding and decoding are valid or optimal for use with MPEG2 transport streams. The user must be aware of the
intended application and the Transport Stream format used.
Switches in the CENTER position do not affect encoding or decoding, switches in the UP position apply to
decoding and switches in the DOWN position apply to encoding.
The application of certain processing functions is automatically blocked if the incoming stream is not in a suitable
format, e.g. if the incoming Transport Stream contains 188 Byte packets then neither Interleaving, De-Interleaving,
Reed Solomon encoding or Reed Solomon Decoding can be applied. The MDC-3570 provides a visual indication of
the incoming Transport Stream format, e.g. Packet size 188/204, Scrambling or RS coding. These indicators help
the user decide which processing functions are required.
In most encoding applications the switches would typically be in the center or down position. Whilst in most
decoding applications the switches would typically be in the center or up position. It would be unusual to use switch
combinations where one or more switches are in the up position whilst one or more switches are in the down
position.
TS Transmission Formats
The application of scrambling, interleaving and RS encoding is required prior to satellite or terrestrial modulators
(e.g. QPSK modulation for satellite). Interleaving and RS coding are almost always used together. Interleaving
reduces the impact of burst errors by redistributing the error burst over multiple packets. Since the RS decoder can
only correct up to 8 bytes per packet, this increases the likelihood of all the errors being corrected. If a packet has
more than 8 errored bytes, an RS decoder will be unable to correct that packet. Scrambling or energy dispersal on
the other hand helps maintain DC balance on the transmission line and allows equiprobable detection threshold to
be used.
Front Panel Indicators:
Input loss alarm:
This LED lights when no ASI input is detected.
Sync loss alarm:
This LED lights when a valid MPEG-2 TS is absent and an ASI input is detected.
188 byte indicator:
This LED lights when a valid MPEG-2 TS with 188 byte packet length is input.
204 byte indicator:
This LED lights when a valid MPEG-2 TS with 204 byte packet length is input.
Scrambling presence indicator:
This LED lights when a valid MPEG-2 TS stream containing a byte sequence that corresponds to scrambling. A
scrambling byte sequence uses an inverted 47H sync byte (B8H) every eighth sync to signify the start of the
scrambling sequence.
R-S (Reed Solomon) presence indicator (Green):
This LED lights when Reed Solomon error correction bytes are present in place of the 16 dummy bytes of a 204
Byte MPEG-2 TS. The MDC-3470 considers any data content other than all 0’s during the 16 dummy bytes to be
RS correction bytes.
R-S (Reed Solomon) Error indicator (Red):
This LED lights for at least 300 ms when un-correctable R-S packets are detected. These correspond to packets with
more than 8 bytes in error.
G.703 indicator (Yellow):
This LED lights when the output rate does not match the selected E3 or DS3 G.703 output rate.
INPUT
SYNC
188
204
R-S SCRAM
R-S
G.703
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3570-mdc.ib.rev2.doc Page 10 of 13 17/10/2007
Processing controls:
This module is capable of performing scrambling, de-scrambling, RS encoding, RS decoding, interleaving and de-
interleaving.
In this context, the word scrambling refers to the process of randomisation for the purpose of energy dispersal of the
signal. It does not refer to the encryption applied to Pay TV signals to control access to particular channels or
programs.
For a description of the processes involved see Application examples - Cable Systems and Technical specifications -
Characteristics of signal types - MPEG-2 transport layer coding.
The module is normally set up as either a decoder or an encoder. Combinations of both functions simultaneously
should be avoided.
The processing functions are selected using three switches (interleaving, RS coding
and scrambling) on the front panel. Each switch has three positions (up, centre or
down).
A switch set to the UP position applies processing to the decoding section;
a switch set to the DOWN position applies processing to the encoding section; and
a switch set to the CENTRE position does not perform that function to either the
decoding or encoding section.
In most instances, the MDC-3570 would be set to all encode or all decode.
UP - DECODE
CENTRE - OFF
DOWN - ENCODE
SCRAM
REED
SOLOMON
INTER
LEAVE
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3570-mdc.ib.rev2.doc Page 11 of 13 17/10/2007
Maintenance & storage
Maintenance:
No regular maintenance is required.
Care however should be taken to ensure that all connectors are kept clean and free from contamination of any kind.
This is especially important in fibre optic equipment where cleanliness of optical connections is critical to
performance.
Storage:
If the equipment is not to be used for an extended period, it is recommended the whole unit be placed in a sealed
plastic bag to prevent dust contamination. In areas of high humidity a suitably sized bag of silica gel should be
included to deter corrosion.
Where individual circuit cards are stored, they should be placed in antistatic bags. Proper antistatic procedures
should be followed when inserting or removing cards from these bags.
Warranty & Service
Equipment is covered by a limited warranty period of three years from date of first delivery unless contrary
conditions apply under a particular contract of supply. For situations when “No Fault Found” for repairs, a
minimum charge of 1 hour’s labour, at IRT’s current labour charge rate, will apply, whether the equipment is within
the warranty period or not.
Equipment warranty is limited to faults attributable to defects in original design or manufacture. Warranty on
components shall be extended by IRT only to the extent obtainable from the component supplier.
Equipment return:
Before arranging service, ensure that the fault is in the unit to be serviced and not in associated equipment. If
possible, confirm this by substitution.
Before returning equipment contact should be made with IRT or your local agent to determine whether the
equipment can be serviced in the field or should be returned for repair.
The equipment should be properly packed for return observing antistatic procedures.
The following information should accompany the unit to be returned:
1. A fault report should be included indicating the nature of the fault
2. The operating conditions under which the fault initially occurred.
3. Any additional information, which may be of assistance in fault location and remedy.
4. A contact name and telephone and fax numbers.
5. Details of payment method for items not covered by warranty.
6. Full return address.
7. For situations when “No Fault Found” for repairs, a minimum charge of 1 hour’s labour will apply,
whether the equipment is within the warranty period or not. Contact IRT for current hourly rate.
Please note that all freight charges are the responsibility of the customer.
The equipment should be returned to the agent who originally supplied the equipment or, where this is not
possible, to IRT direct as follows.
Equipment Service
IRT Electronics Pty Ltd
26 Hotham Parade
ARTARMON
N.S.W. 2064
AUSTRALIA
Phone: 61 2 9439 3744 Fax: 61 2 9439 7439
Email: [email protected]
IRT Communications
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3570-mdc.ib.rev2.doc Page 12 of 13 17/10/2007
Characteristics of signal types
Coding characteristics
G.703:
The HDB3 (High Density Bi-polar of order 3) code as defined in G.703 for 34,368 kbits/s is as follows:
Binary 1 bits are represented by alternate positive and negative pulses and binary 0 bits by spaces.
Exceptions are made when strings of successive 0 bits occur in the binary signal.
Each block of 4 successive zeros is replaced by 000V or B00V where B is an inserted pulse of the correct
polarity and V is an inserted pulse violating the polarity rule. The choice of 000V or B00V is made so that
the number of B pulses between consecutive V pulses is odd so that successive V pulses are of alternate
polarity and so no DC component is introduced.
The B3ZS (Bipolar with Three Zero Substitution) (Also designated HDB2 - High Density Bi-polar of order 2) code
as defined in G.703 for 44,736 kbits/s is as follows:
Binary 1 bits are represented by alternate positive and negative pulses and binary 0 bits by spaces.
Exceptions are made when strings of successive 0 bits occur in the binary signal.
Each block of 3 successive zeros is replaced by 00V or B0V. The choice of 00V or B0V is made so that the
number of B pulses between consecutive V pulses is odd, so that successive V pulses are of alternate polarity
and so no DC component is introduced.
IRT Communications
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3570-mdc.ib.rev2.doc Page 13 of 13 17/10/2007
Drawing List Index
Drawing # Sheet # Description
804689 1 MDC-3570 circuit diagram – sheet 1
804689 2 MDC-3570 circuit diagram – sheet 2
804689 3 MDC-3570 circuit diagram – sheet 3
804689 4 MDC-3570 circuit diagram – sheet 4
IRT Communications
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Title
SCALE
SIZE
Sheet
DRAWN
CHECKED
ENG. APP.
Revision:
DO NOT COPY NOR
DISCLOSE TO ANY
THIRD PARTY
WITHOUT WRITTEN
CONSENT
of1
IRT Electronics Pty. Ltd.
Drawing No.
COPYRIGHT
ARTARMON NSW AUSTRALIA 2064
A3
N.T.S. 4
MDC-3570
804689
Date: 3
20-Aug-2003
12 34 56 78 910
PL1
CON5X2
C12
100n
GND
VCC
C3
100n
GND
VCC
VCC
nCONFIG
D0
DCLK
nSTATUS
CONF_DONE
DATA 1
DCLK 2
OE 3
nCS 4
GND
5nCASC 6
VCC
7VCC
8IC4
EPC1
RN2
5x1k
3V3
GND
GCLK1 79
DI1 78
GCLK2 183
DI3 182
DI2 80
DI4 184
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
36
36
37
37
38
38
39
39
40
40
41
41
44
44
45
45
46
46
47
47
53
53
54
54
55
55
56
56
57
57
58
58
60
60
61
61
63
63
64
64
65
65
67
67
68
68
69
69
70
70
71
71
73
73
74
74
75
75
83
83
85
85
86
86
87
87
88
88
89
89
90
90
92
92
93
93
94
94
95
95
96
96
97
97
99
99
100
100
101
101
102
102
103
103
104
104
111
111
112
112
113
113
114
114
115 115
116 116
119 119
120 120
121 121
122 122
125 125
126 126
127 127
128 128
131 131
132 132
133 133
134 134
135 135
136 136
139 139
140 140
141 141
142 142
143 143
144 144
147 147
148 148
149 149
150 150
157 157
158 158
159 159
160 160
161 161
162 162
163 163
164 164
166 166
167 167
168 168
169 169
170 170
172 172
173 173
174 174
175 175
176 176
177 177
179 179
180 180
186 186
187 187
189 189
190 190
191 191
192 192
193 193
195 195
196 196
197 197
198 198
199 199
200 200
202 202
203 203
204 204
205 205
206 206
207 207
208 208
LOCK
62
IC13A
EP1K50RC-208
DATA0
156
DCLK
155
nCE
154
TDI
153
MSEL0
108 MSEL1
107
nCONFIG
105
nSTATUS
52
TMS
50
TDO
4
nCEO
3
CONF_DONE
2
TCK
1
VCCIO
5VCCIO
22
VCCIO
42
VCCIO
34
VCCIO
66 VCCIO
84 VCCIO
98 VCCIO
110 VCCIO
118 VCCIO
138 VCCIO
146 VCCIO
165 VCCIO
178 VCCIO
194
TRST
51
GND 6
GND 23
VCCINT 72
GND 35
VCCINT 48
GND 117
VCCCKLK 77
GND 82
GND 76
GND 123
GND 109
VCCINT 106
GND 32
GND 20
VCCINT 33
GND 49
VCCINT 21
GND 43
GNDCKLK 81
GND 59
VCCINT 91
GND 129
GND 137
GND 145
GND 151
GND 171
GND 181
GND 188
VCCINT 124
VCCINT 130
VCCINT 152
VCCINT 185
VCCINT 201
IC13B
EP1K50RC-208
GND
C13
100n
GND
VCC
DATA 1
DCLK 2
OE 3
nCS 4
GND
5nCASC 6
VCC
7VCC
8IC5
EPC1
C47
100n C43
100n
C46
100n
C56
100n
C63
100n
C68
100n
C82
100n
C83
100n
C80
100n
C85
100n
C55
100n
2V5
GND
2V5
GND
C48
100n
C45
100n
C44
100n
C42
100n
C54
100n
C65
100n
C71
100n
C78
100n
C79
100n
C81
100n
C84
100n
C72
100n
GND
GND
C66
100n
C57
100n
3V3
3V3
TXENA
TXCLK
TXD7
TXD6
TXD5
TXD4
TXD3
TXD2
TXD1
TXD0
RXCLK
RXD0
RXD1
RXD2
RXD3
RXD4
RXD5
RXD6
RXD7
CARRIER
RXDA
RXDJ
RELAY1
RXREF
DEN
DIN
DOUT
nSTATUS
P00
P04
P02
P06
SERCLK
SERLAT
SERDAT
REN
P05
P03
P01
P07
P20
P12
G703OUT
G703IN
SDA
SCL
CONF_DONE
D0
DCLK
RELAY2
P22
nCE
nCONFIG
ASI IN/OUT
804689i3s2.SCH
CON1
PRES
SYNC
RSERR
TS188
TS204
SCRAM
RS
INTER
RELAY1
REAR ASSEMBLY
804689i3s3.SCH
32
4
GND
1GND
5
SW3
32
4
GND
1GND
5
SW2
32
4
GND
1GND
5
SW1
GND
VCC
SW1A
SW1B
SW2A
SW2B
SW3A
SW3B
SERDAT
SERLAT
SERCLK
N/C 1
FOUT 8
VCC
14
GND
7
XO1
XO
ASICLK
RXD0
RXD1
RXD2
RXD3
RXD4
RXD5
RXD6
RXD7
VCC
C33
100n
GND
R18
820R
C37
100n
C38
100n
C40
10u
R17
820R
VIN
1
GND
2
VOUT 3
CASE
IC6
LM3940
C35
100n
C31
100n
C36
47u
3V3
GND
GND
2V5
GND
C34
10n
VIN
3VOUT 2
ADJ 1
CASE 0
IC7
LM317TO
LD6
LD2
TR2
BSS123
TR1
BSS123
R5
820R
R4
820R
VCC
GND
LD8
LD7
TR4
BSS123
TR3
BSS123
R7
820R
R6
820R
LD3
LD9
TR6
BSS123
TR5
BSS123
R9
820R
R8
820R
LD5
LD4
TR8
BSS123
TR7
BSS123
R3
820R
R2
820R
PRES
SYNC
RSERR
TS188
TS204
SCRAM
RS
INTER
PRES
SYNC
RSERR
188
204
SCRAM
RS
(INTERLEAVING)
G703
CARRIER
RN1
9x10k
DEN
DIN
RXDA
LK1LK3 LK2
GND
R21
22R C41
47p
GND
TXD0
TXD1
TXD2
TXD3
TXD4
TXD5
TXD6
TXD7
TXENA
TXCLK
RXD0
RXD1
RXD2
RXD3
RXD4
RXD5
RXD6
RXD7
RXCLK
RXDA
RXDJ
CARRIER
P04
P02
P00
P06
P20
P05
P03
P07
P01
TXD0
TXD1
TXD2
TXD3
TXD4
TXD5
TXD6
TXD7
TXCLK
RELAY1
RXREF
RXREF
VCO1
GCON1
CON2
VCO2
DMK
5VREG1
GND
CONTROL
1
FOUT 8
VCC
14
GND
7
XO2
VCXO
C25
100nF
C21
100n C23
10n
VCC
GND
C15
10u
L4
470nH
R15
220k
GND
C26
100nF
C28
100n
GND
5VREG1
NC
1
IN
2
GND 3
OUT 4
VCC 5
IC9
74HCT1G04
C53
22p
R22
22R
GND
VCO1
VCONT1
TPDATA
TNDATA
TCLK
E3
DS3
TXLEV
VCONT1
VCC
C14
100n
C24
10n
C16
10u
VCC
GND
C22
100n
L3
470nH C19
10u
GND
CONTROL
1
FOUT 8
VCC
14
GND
7
XO3
VCXO
C74
100nF
R31
470k
GND
C75
100nF
C77
100n
GND
5VREG2
NC
1
IN
2
GND 3
OUT 4
VCC 5
IC16
74HCT1G04
C49
22p
R23
22R
GND
VCO2
VCONT2
5VREG2
C30
100p
C73
100p
5VREG
VCONT2
REG2
C18
100n
C64
100n
34.368MHz
CON3
CON3
5VREG2
TR9
NDS336P
5VREG1
TR10
NDS336P
R10
10k
R11
10k
VCC
R26
10k
REG1
REG2
REG1
ASICLK
CON4
GCON2
CON4
GCON2
R19
820R
R30
10k
R12
10k R16
10M
R28
10M
DEN
DIN
R14
10k
GND 8
G
5
nQ 7
H
6
F
4E
3
CLOCK
2
nLOAD 1
Q9
SA
10
A
11
B
12
C
13
D
14
CLKINH 15
VCC 16
IC2
74HC165
C1
10n C2
100n
VCC
GND
SERCLK
SW1A
SW1B
SW2A
SW2B
SW3A
SW3B
LK1
LK2
LK3
SDATA
SERLAT
LK1
SW1A
SW1B
SW2A
LK2
LK3
SW2B
SW3A
SW3B
DOUT
DOUT
nSTATUS
P07
P06
P03
P05
SERCLK
SERLAT
SERDAT
CON1
CON2
GCON1
RXCLK
REN P02
P01
P00
P20
P04
RN3
9x10k
VCC
LKA
LKD
LKC
LKB
P12
REQDIS
LOSTHR
DS3
E3
TCLK
TPDATA
TNDATA
EXCLK
TXLEV
G703OUT
G703IN
RLOS
RLOL
TAOS
TXOFF
RCLK
RPOS
RNEG
G703 INTERFACE
804689i3s4.SCH
G703IN
G703OUT
LOSTHR
REQDIS
TAOS
TXOFF
EXCLK
G703IN G703OUT
RNEG
RPOS
RCLK
RLOL
RLOS
RNEG
RPOS
RCLK
RLOL
RLOS
TPDATA
TNDATA
TCLK
E3
DS3
TXLEV
LOSTHR
REQDIS
TAOS
TXOFF
EXCLK
TXENA
SCL
SDA
SDA
SCL
CONF_DONE
D0
DCLK
RELAY2
RELAY2
1
2
3
4
5
6
7
8 9
10
11
12
13
14
15
16
SW4
8SPST
GND 8
G
5
nQ 7
H
6
F
4E
3
CLOCK
2
nLOAD 1
Q9
SA
10
A
11
B
12
C
13
D
14
CLKINH 15
VCC 16
IC3
74HC165
C5
10n C6
100n
VCC
GND
SERDAT
SERLAT
GND
SDATA
SERCLK
LKE
LKF
LKG
LKH
LKA
LKD
LKC
LKB
LKE
LKF
LKG
LKH
P22
P22
nCE
nCONFIG
nCE
P12
GND 3
RSTn
1VCC 2
IC15
DS1811
VCC
GND
RXDJ
44.736MHz
IRT Communications
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Title
SCALE
SIZE
Sheet
DRAWN
CHECKED
ENG. APP.
Revision:
DO NOT COPY NOR
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THIRD PARTY
WITHOUT WRITTEN
CONSENT
of2
IRT Electronics Pty. Ltd.
Drawing No.
COPYRIGHT
ARTARMON NSW AUSTRALIA 2064
A3
N.T.S. 4
MDC-3570
804689
Date: 3
20-Aug-2003
TXD6
TXENA
TXCLK
TXD0
TXD1
TXD2
TXD3
TXD4
TXD5
TXD7
1A
1B
2A
2B
3A
3B
4A
4B
5A
5B
6A
6B
7A
7B
8A
8B
9A
9B
10A
10B
11A
11B
12A
12B
13A
13B
14A
14B
15A
15B
16A
16B
17A
17B
18A
18B
19A
19B
20A
20B
21A
21B
22A
22B
23A
23B
24A
24B
25A
25B
26A
26B
27A
27B
28A
28B
29A
29B
30A
30B
31A
31B
32A
32B
M1
M2
PL3
DIN64M
RXD0
RXD1
RXD2
RXD3
RXD4
RXD5
RXD6
RXD7
GND
RELAY1
MINOR
ASIIN
RXCLK
RXDA
TXD0
TXD1
TXD2
TXD3
TXD4
TXD5
TXD6
TXD7
TXENA
TXCLK
C94
10n
C101
10n
C98
10n
C109
100n
C112
10u
L8
470nH
VCC
GND
VCC
R42
120R R43
120R
C111
100n
VCC
8
VEE
5
IN+
7IN-
6Q1n 4
Q1 3
Q0n 2
Q0 1
IC22
CLC007
C121
100p
C117
10n
R44
180R R41
180R
GND
GND
C125
4u7
R55
75R
SVS
10
BISTENn
5
MODE
7
GND 6
VCCN 4
OUTC+ 3
OUTC- 2
OUTB- 1
VCCQ 9
RP 8
D7
11
D6
12
D5
13
D4
14
SC
19
GND 20
D3
15
D2
16
D1
17
D0
18
CKW
21
VCCQ 22
ENA
23 ENN
24
FOTO
25
OUTA- 26
OUTA+ 27
OUTB+ 28
IC19
CY7B923
VTX
VTX
GND
ASIOUT
C87
47p
R29
22R
R53
150R
GND
C124
10n
VCC
1
VCC
2
VEE
11
VEE
10 OEM 3
VCC
4CD 5
AEC+ 6
AEC- 7
DI
8
DIn
9
MUTEn 12
D0 13
DOn 14
IC21
CLC014AJE
GND
C107
100n
C114
100p
R46
120R
R50
100R
R54
75R C115
10n
C122
10n
C110
10n
C106
10n
C103
10n
C102
100n
C99
10u
C95
10u
L7
470nH
C88
100n
L10
15nH
GND
GND
D3
BAS32
VCC
C96
10n
CARRIER
GND
R39
75R R38
75R
VCC
CARRIER
RVS/Qj 10
RF
5
RDYn 7
GND
6
BISTENn
4
A/Bn
3
INA+
2
INA-
1
VCCN
9
GND
8
Q7 11
Q6 12
Q5 13
Q4 14
SC/Qa 19
GND
20
Q3 15
Q2 16
Q1 17
Q0 18
VCCQ
21
CKR 22
SO
23
VCCQ
24
REFCLK
25 MODE
26
INB-
27 INB+
28
IC14
CY7B933
RXD0
RXD1
RXD2
RXD3
RXD4
RXD5
RXD6
RXD7
RXREF
RXCLK
RXDA
C60
10n
C61
10n
C76
10n
C70
100n
C59
100n
DOUT
DOUTn
C69
10u
C67
10u
L6
470nH
VCC
GND
VREC
VREC
DOUT
DOUTn
FL1
FL2
FL3
FL4
~
~
DB2
DB106
~
~DB1
DB106
F1
4R7
F2
4R7
F3
4R7
F4
4R7
PS2
PS1
PS4
PS3
C20
100n
C17
100n
C7
100n
C8
100n
C4
330u C11
330u
VCC
L1
22u LD1
R1
820R
GND
C29
100n
C27
100n
GND
L2
22u
L5
22u
PS4
PS3
PS2
PS1
RELAY CONTACTS SHOWN IN
"NOT-ENERGISED" POSITION
5
1
10
3
8
RELAY2
RELAY-SPCO
VCC
TR14
BSS123
GND
RELAY1
RELNC1
RELNO1
MAJOR
ASIIN
ASIOUT
GND
RXREF
D2
BAS32
C113
10u
R25
22R
C58
47p
GND
R24
22R C62
47p
GND
DMK
G703OUT
RO
1
RE
2
DE
3
DI
4GND 5
A6
B7
VCC 8
IC18
N/C
C97
N/C
C100
N/C
GND
VCC
DIN
DEN
DOUT
LK7
N/CR40
N/C
P17 10
P27
5
P23(AI)
7
P25
6
P01(AI)
4
P03(AI/O)
3
P05(AI/O)
2
P07(AI)
1
SMP 9
P21(AI)
8
P15 11
P13 12
P11(SCLK) 13
VSS 14
XRES 19
P20(AI)
20 P10(SDATA) 15
P12 16
P14 17
P16 18
P22(AI)
21
P24
22
P26
23
P00(AI)
24
P02(AI/O)
25
P04(AI/O)
26
P06(AI)
27 VCC 28
IC12
N/C
C52
N/C C50
N/C
GND
GND
1
2
3
4
5
PL2
N/C
P03
P01
P05
P06
P07
P04
P20
CSn 1
DOUT
2
WENn 3
DIN 5
GND
4
SCLK 6
HOLDn 7
VCC
8
IC10
N/C
C39
100n
GND
VIN+
1
VIN-
2
VOUT+ 5
VOUT- 3
CASE G1
CASE G2
IC1
PBBA-2405C
VIN+
1VOUT+ 5
VOUT- 3
CASE G2
GND 1
C1-
2
V- 3
TIN
4
ROUT
5RIN 6
TOUT 7
SD
8
C1+
9
VCC 10
IC17
N/C
C90
N/C
C89
N/C
C93
N/C
VCC
GND
DEN
DIN
DIN
TXD
RXD
TXD
RXD
GND
nCE
P02
P00
nSTATUS
3V3
TR12
N/C
R20
N/C
TR11
N/C
3V3
3V3
G703OUT
G703IN G703IN
CSn 1
DOUT
2
WENn 3
DIN 5
GND
4
SCLK 6
HOLDn 7
VCC
8
IC8
N/C
C32
100n
GND
3V3
SDIN
SCLK
SDOUT
nCE
SDIN
SCLK
CS2 CS1
CS2
nCONFIG SDOUTSCLK
SDIN
D5
N/C
SDA
GND
VCC
R51
N/C
nSTATUS
DCLK
CONF_DONE
D0
nSTATUS
CONF
D0
DCLK
CONF
D0
DCLK
RELAY2
RELAY CONTACTS SHOWN IN
"NOT-ENERGISED" POSITION
5
1
10
3
8
RELAY1
RELAY-SPCO
VCC
TR13
BSS123
GND
RELAY2
RELNC2
RELNO2
D1
BAS32
GND
GND
A
B
LK6
A
B
LK5 MAJOR
MINOR
SCL
VCC
NC 1
IN 2
GND
3
OUT
4
VCC
5IC23
N/C
GND
C51
N/C
3V33V3
CS1
P22
I2CLK
I2DATA
I2CLK
I2DATA
nCONFIG
nCE
nCONFIG
nCE
nCE
A
BLK4
N/C
MVCC
R13
0R
GND
3V3
P12
C10
1000u C9
1000u
RXDJ
RXDJ
GND
3
RSTn 1
VCC
2IC11
N/C
GND
3V3
R52
N/C
R56
N/C
VCC
IRT Communications
www.irtcommunications.com
Title
SCALE
SIZE
Sheet
DRAWN
CHECKED
ENG. APP.
Revision:
DO NOT COPY NOR
DISCLOSE TO ANY
THIRD PARTY
WITHOUT WRITTEN
CONSENT
of3
IRT Electronics Pty. Ltd.
Drawing No.
COPYRIGHT
ARTARMON NSW AUSTRALIA 2064
A3
N.T.S. 4
MDC-3570
804689
Date: 3
20-Aug-2003
DMK
FGND
MNT2
MNT1
MINB
MINA
P1
P2
P3
P4
LEDA
LEDB
LEDC
LEDD
LEDE
LEDF
LEDG
LEDH
DC
SW1
SW2
SW3
FP1
FPANELB
1A
1B
2A
2B
3A
3B
4A
4B
5A
5B
6A
6B
7A
7B
8A
8B
9A
9B
10A
10B
11A
11B
12A
12B
13A
13B
14A
14B
15A
15B
16A
16B
17A
17B
18A
18B
19A
19B
20A
20B
21A
21B
22A
22B
23A
23B
24A
24B
25A
25B
26A
26B
27A
27B
28A
28B
29A
29B
30A
30B
31A
31B
32A
32B
M2
M1
SK3
DIN64F
I2DAT
I2CLK
MAJOR
MINOR
GNDR
1
2
3
4
5
PL4
CON5X1
RAL4
22nH
GNDR
SK5
GNDR
1
2
3
J1
CON3X1
SK4
GNDR
GNDR
RAL3
15nH
SK2
GNDR
RAL2
15nH
1
2
3
4
5
6
7
8
PL5
N/C
RAL1
15nH
GNDR
SK1
1
2
3
4
5
6
7
8
10
9
PL6
N/C GNDR
RXD
TXD
RXD
TXD
1
6
2
7
3
8
4
9
5
RIBBON CABLE
CD
RXD
TXD
DTR
DSR
CTS
RTS
RI
GND
IRT Communications
www.irtcommunications.com
Title
SCALE
SIZE
Sheet
DRAWN
CHECKED
ENG. APP.
Revision:
DO NOT COPY NOR
DISCLOSE TO ANY
THIRD PARTY
WITHOUT WRITTEN
CONSENT
of4
IRT Electronics Pty. Ltd.
Drawing No.
COPYRIGHT
ARTARMON NSW AUSTRALIA 2064
A3
N.T.S. 4
MDC-3570
804689
Date: 3
20-Aug-2003
DMK
TXLEV
1
TAOS
2TAVDD 3
DMO 4
TAGND 5
AGND 6
RAGND 7
RTIP
8
RRING
9
RAVDD 10
RCLK2INV
11
REQDIS
12
LOSTHR
13
LLB
14
RLB
15
STS1/nDS3
16
E3
17
HOST
18
LOSMUTEN
19
LCV 20
ENCODIS
21
DECODIS
22
RLOL 23
RLOS 24
DGND 25
DVDD 26
EXCLK
27
RDGND 28
RDVDD 29
RCLK2 30
RCLK1 31
RNEG 32
RPOS 33
nICT
34
TXOFF
35
TCLK
36 TPDATA
37 TNDATA
38
TAGND 39
TRING 40
TTIP 41
TAVDD 42
MRING 43
MTIP 44
IC20
XRT7300
R47
33R
R45
33R 6
1
34
2
5
T1
113B7
GND
D4
BAV99
D6
BAV99 GND
VCC
GND
VCC
TXLEV
TXOFF
TAOS
TNDATA
TPDATA
TCLK
EXCLK
DS3
E3
REQDIS
LOSTHR
RLOS
R49
39R R48
39R
6
1
3 4
2
5
T2
113B7
GND
D7
BAV99
D8
BAV99
VCC
GND
VCC C118
10n
GND
C86
22p
R37
22R
R32
22R R33
22R R27
22R
GND
VCC
G703IN
G703OUT
RLOL
RPOS
RNEG
RCLK
C116
100n
C120
100n
C119
100n
C104
100n
C105
100n
C91
100n
C92
100n C108
10u
L9
470nH
VCC
GND
R36
22R
R35
22R
R34
22R
REQDIS
LOSTHR
DS3
E3
TNDATA
TPDATA
TCLK
EXCLK
TXLEV
TAOS
TXOFF
RLOS
RLOL
RCLK
RPOS
RNEG
GND
TAVCC
RTIP
RRING
TTIP
TRING
GND
IRT Communications
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