Installing the Equipment
Page 2-14
Reference Guide: Voyager E5784 and E5788 HD DSNG Encoder
ST.RE.E10137.3
Ethernet #1 and #2
An 8-way, RJ-45 connector provides a 10BaseT
Ethernet interface for communications with the MEM
for control and monitoring. The Encoder has a single
switched Ethernet channel. Ethernet#1 is selected as
default at power-up. If a carrier is not detected on
Ethernet#1 then the input switches to Ethernet#2.
This gives a redundant Ethernet control via two hubs.
Table 2.9: Ethernet Connector
Pin Signal
Pin
Signal
1
Tx Out (+)
4-5
Not connected
2
Tx Out (-)
6
Rx In (-)
3
Rx In (+)
7-8
Not connected
Alarm
If required, connect an external status monitoring
device to the ALARM connector.
A 9-way, D-type male connector provides an alarm
relay interface which can be used to send a signal to
remote equipment.
When there are no active alarms or fails, the relays are energised. They
are de-energised when there is an active alarm or active fail. Thus, a loss
of power will be signalled as an alarm and fail.
Table 2.10: Alarm Connector
Pin Signal
Pin
Signal
1 Ground
6
Fail
(NO)
2
Fail (common)
7
Fail (NC)
3
Alarm (NO)
8
Alarm (common)
4
Alarm (+) (NC)
9
Reset 2 (internally grounded)
5
Reset 1 (internally pulled
to 3.3 V via 10 k
Ω
)
NOTE…
NC = Normally Closed, NO = Normally Open, and refers to the relay contacts. Refer to Annex B for
details of the relay contact rating.
Alarm
Common
Fail (NC)
Fail (NO)
Alarm (NC)
Alarm (NO)
Fail
Common
Reset 1
Reset 2
3.3 V
10 k
Ω
