Installation and Setup
Installing the Unit in the Shelf
076R160-000
SpectraComm 800 T3 Data Service Unit
2-9
Issue 4
Installation and Operation Manual
Note
All other pins at this interface are for future use.
Table 2-5
Front Panel DTE HSSI Interface Connector Pinouts
Pin No.
Circuit
No.
Circuit Name
Direction
Description
1, 7,13, 19,
25, 26, 32,
38, 44, 50
102
Signal Ground
Connects the DTE circuit ground to DCE circuit ground
providing a path between the DTE and DCE signal
commons.
11, 36
103
Transmitted Data
To DCE
Signals on this circuit are generated by the DTE and are
transferred to the local DCE for transmission of data to
remote DCE or for maintenance or control of the local DCE.
4, 29
104
Received Data
From DCE
Signals on this circuit are generated by the DCE in
response to data signals received from the remote DCE, or
for maintenance or control purposes. In all systems, the
DCE does not transfer data to the DTE on this circuit unless
an ON condition is present on 107 (DCE Ready) and 108/2
(DTE Ready).
3, 28
107
DCE Ready
From DCE
Signals on this circuit are used to indicate whether the DCE
is ready to operate. The ON condition indicates that the
DCE is ready to exchange data with the DTE.
8, 33
108/2
DTE Ready
To DCE
Signals on this circuit are used to indicate whether the DTE
is ready to operate. The ON condition indicates that the
DTE is ready to exchange data with the DCE.
10, 35 (A)
12, 37 (B)
143
144
Loopback A
Loopback B
To DCE
To DCE
Signals on these circuits are used to request the loopback
test conditions as described below:
Interchange Circuits Requested Loopback
143 144
OFF OFF None
ON OFF Local line
OFF ON Remote line
ON ON Local Digital
24,49
142
Test Mode
From DCE
Signals on this circuit indicate whether the local DCE is in a
test condition.
6, 31
114
Transmitter Timing
(DCE)
From DCE
Signals on this circuit are used to provide the DTE with
signal element timing information.
9, 34
113
Transmitter Timing
(DTE)
To DCE
2, 27
115
Receive Timing
(DCE)
From DCE
Signals on this circuit are used to provide the DTE with
received signal element timing information.
Содержание SpectraComm 800 T3
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Страница 62: ...The Best Connections in the Business...
