Ecr-U( ) Etu; Description; Figure 5-60 Ecr-U( ) Block Diagram; Figure 5-61 Ecr-U( ) Etu - NEC ElectraElite 48 System Hardware Manual

Electra Elite
System Hardware Manual
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.
Maximum power capacity
for RLYs 1~3 is 10 W.
External
Paging

Figure 5-60 ECR-U( ) Block Diagram

Pin 2
Pin 1
CN 2 Connector
SPKR OUT
RLY 1
Zone A
RLY 2
RLY 3
Pin 3 CN 2 Connector
Pin 4
CN 3
External
Amplifier
RCA
Jack
Issue 6
External BGM
Source
External
Amplifier
Zone Paging
Zone B
Output from
MDF
Zone C
SPKR OUT
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