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OM20 Universal Outdoor Modem
23
Send Timing B (+)
24
No Connect
25
Clear To Send B (+)
Table 5.4.cont. EIA-530 Synchronous Data I/O; ES-ES Async Data Connector (J3)
J3
Pin No.
26
Transmit Data B (ES-ES)
27
Transmit Data A (ES-ES)
30
Receive Data A (ES-ES)
31
Receive Data B (ES-ES)
J3
Pin No.
32
Send Data (-)
35
Receive Data A (-)
34
Ground
33
Send Data (+)
36
Receive Data B (+)
37
Mod Fault
29
Demod Fault
5.1.4 ETHERNET DATA/M&C (J4)
The Ethernet Data/M&C Port (J4) is dedicated for Ethernet communications. This port is
configured for 10/100 Base-T communication protocols, and can be used to Monitor & Control
the unit with the GUI interface functions of the unit and/or send and receive baseband data (if
equipped with the optional Ethernet data interface) The interface Complies with IEEE 802.3 and
IEEE802.3u. The physical interface (J4) is a standard male RJ45 Connector. A mating RJ45
weatherproof shroud is included with the standard unit. The terminating connector number is a
standard female RJ45. Ethernet cabling and connector is no included unless specified as an
option at the time of order.
MN-OM20– Revision 5
Signal Name
Table 5.4a. G.703 Balanced (J3)
Signal Name
ST-B
Output
---
---
CS-B
Output
Signal
Direction
TXD_B
Input
TXD_A
Input
RXD_A
Output
RXB_B
Output
Signal
Direction
SD-A
Input
RD-A
Output
GND
---
SD-B
Input
RD-B
Output
MOD-
Open
FLT
Collector
Output
Open
DMD-
Collector
FLT
Output
Rear Panel Interfaces
12
25
13
EIA-530 Std.
25 Pin
Connector
Reference
N/C
N/C
N/C
N/C
G.703
Balanced
15 Pin
Connector
Reference
1
3
4
9
11
14
15
5–6
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