NEC Xen Master System Hardware Manual

May 2001
System Hardware Manual 5 - 173
A6-324000-642-01 – Release 4.0 May 2001
5.7 ECR-U13 ETU
5.7.1 Description
The ECR-U13 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 RCA audio jacks. One provides the both-
way audio-for-paging system (CN3). The other provides a
tone output for External Tone Ringing and Night Chime
(CN4).
Figure 5-37 ECR-U13 Block Diagram - External Paging
External BGM
Source
External
Amplifier
CN 2 Connector
SPKR OUT
Pin 2
Pin 1
Pin 3
Pin 4
Jack
External
Amplifier
External
Paging
CN 2 Connector
SPKR OUT
Zone A
Zone B
Zone C
Zone Paging
Output from
MDF
RL306
RL407
RL408
CN 3
ECR-U13 ETU
RCA

NEC Xen Master Specifications

General

Brand	NEC
Model	Xen Master
Category	Telephone
Language	English