Backplane settings – ETC Sensor+ Rack (SR+ HSR+) CEM+ to CEM3 Retrofit User Manual
Page 11
2
The Retrofit
9
Backplane Settings
Upgrade kit backplanes ship from the factory with all DIP switches in the off (down) position.
You will have to set the DIP switches on the new backplane to match your rack. You will
also have to verify the termination switch settings.
a: Set both termination switches to “Off” (middle position) for all racks except the
last rack in your system.
b: Set the termination switches for the last rack in the system to “ON” (top
position).
c: Using a precision screwdriver, set the DIP switches to match your rack type
according to:
• number of modules (6, 12, 24, or 48)
• whether the rack has Advanced Features (AF)
Use the following chart to determine your required DIP switch settings:
“On” position = switch pushed to the top
DIP switch Number
Rack Model
1
2
3
4
5
6
7
8
SR3-6
On On
SR3-6AF
On
On On
SR3-12
On
SR3-12 AF
On
On
SR3-24
On
SR3-24 AF
On
On
SR3-48
SR3-48 AF
On
Set termination to “Off”
(middle position)
Set DIP switches