![background image](http://html1.mh-extra.com/html/advantech/amt-70/amt-70_installation-and-operation-manual_2857565127.webp)
AMT-70/AMT-73/AMT-75 Installation and Operation
11.1.2.1 Front panel push buttons
The two buttons ‘Switch to A’ and ‘Switch to B’ are used to ‘force’ the redundancy shelf to switch to
either Modem ‘A’ or Modem ‘B’ respectively.
Figure 64: 1-1 Redundancy Controller (R5-530/HSSI only) front panel
11.1.2.2 LED indicators
As illustrated in
Designation
Description
PS 1
Internal Power Supply #1 is ON
PS 2
Internal Power Supply #2 is ON
Unit A Alarm
Modem ‘A’ has asserted ‘Summary Fault’ condition
Note - summary fault conditions can be changed. This is described in
Chapter 3.
Unit B Alarm
Modem ‘B’ has asserted ‘Summary Fault’ condition
Unit A On Line
Modem ‘A’ is active
When illuminated, transmit and receive pass through Modem ‘A’
Unit B On Line
Modem ‘B’ is active
Power On
+12V sense for Modems and/or Redundancy unit
127
LED indicators
Push buttons
Summary of Contents for AMT-70
Page 34: ...AMT 70 AMT 73 AMT 75 Installation and Operation 34 This page has been left intentionally blank...
Page 35: ...AMT 70 AMT 73 AMT 75 Installation and Operation 35 This page has been left intentionally blank...
Page 36: ...AMT 70 AMT 73 AMT 75 Installation and Operation 36 This page has been left intentionally blank...