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May 2001
System Hardware Manual
5 - 175
A6-32
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5.7.3
LED Indications
Live LED indications are listed below.
✆
Blinking Red
Normal Operation
✆
Steady Red
Operation Stopped (power still on)
✆
Off
No Power
Busy LED indications are listed below.
✆
Steady Red
Some Relays Are Busy
✆
Off
All Relays Are Idle
5.7.4
Connectors
The following connectors are located on the ECR-U13
ETU. Refer to Table 5-19 Connector Descriptions (CN2)
and Figure 5-39 ECR-U13 ETU.
✆
CN1
Connects to the Backboard
✆
CN2
Relay Contacts for Relays 11 and 12
✆
CN3
Both-way Audio Connection for
External Paging
✆
CN4
Audio output for Tone Ringer and
Night Chime
Table 5-19 Connector Descriptions (CN2)
Pin Number
Description
13~16
Not Used
12
Relay #2
General Purpose
11
10
Relay #1
General Purpose
9
5~8
Not Used
4
Zone Paging Audio Input
3
2
External Paging BGM input
1