Electra Elite
Issue 6
System Hardware Manual
5 - 111
6.4
ECR-U( ) ETU
6.4.1 Description
The ECR-U( ) ETU provides external relay control for Zone
Paging systems (3 relays), External Ringing control relays
(4 relays), Night Chime ringing control (1 relay), and two
general purpose relays.
There are two audio jacks. One provides the both-way
audio-for-paging system. The other provides a tone output
for External Tone Ringing and Night Chime.
Figure 5-60 ECR-U( ) Block Diagram
External BGM
Source
External
Amplifier
CN 2 Connector
SPKR OUT
Pin 2
Pin 1
Pin 3
Pin 4
RCA
Jack
External
Amplifier
External
Paging
CN 2 Connector
SPKR OUT
Zone A
Zone B
Zone C
Zone Paging
Output from
MDF
RLY 1
RLY 2
RLY 3
CN 3
Maximum power capacity
for RLYs 1~3 is 10 W.
Содержание ElectraElite 48
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