Common Tasks
37
DIP Switch Settings
The eight DIP switches relate to behavior, features, or the module size of the rack. In the descriptions
below, switches set in the up position are On and switches set in the down position are Off.
DIP 1 : DBM
This switch disables the backplane memory so that the configuration is not stored on the rack itself.
Default is Off.
DIP 2 : AF
This switch should be set to On if your rack has Advanced Features (see
DIP 3 : HSR 240V
This switch should be set to On if your rack is an HSR rack intended for use with 240 VAC power feeds.
DIP 4 : ESR 230V
This switch should be set to On if your rack is an ESR rack intended for use with 230 VAC power feeds.
DIP 5 : ND
This switch should be set to On if your rack includes a neutral disconnect.
DIPs 6–8
These DIP switches are used together to determine the number of module slots in your rack. Refer to
the table below to find the desired settings for your rack size.
DMX Termination Switches
DMX signal requires a a signal termination at the end of a data run. If your rack is the last device on the
data run for either DMX A or DMX B, set the termination switch for the appropriate run to ON. The
switches are labeled B or A on the backplane label.
If the rack is not the last device on either data run, leave these set to Off.
Note:
For JSR dimmer racks intended for use with 100 VAC power feeds, both DIP 3 and
DIP 4 should be set to On.
Rack size
DIP Number
6
7
8
6 module slots
Off
On
On
12 module slots
Off
On
Off
24 module slots
Off
Off
On
36 module slots
On
Off
Off
48 module slots
Off
Off
Off
