FEBC Operation
Page 4
DMX/CMX Channel Selector Switches
Select the starting channel (in decimal) on the rotary switches S1 through S3, Switch S3 is the most significant digit.
Refer to the chart below for exarmples:
S3 S2 S1
0 0 1 = Channel
1
0 2 1 = Channel
21
1 2 3 = Channel
123
5 0 9 = Channel
509
3.3 Option Dipswitch
At power-up, the dipswitch (S4) is checked. There are 4 configurable functions described by the dipswitch:
POS OFF ON
1
DIS
EN
Square Law Output Select
2
DIS
EN
NON-DIM Select (All 4 channels)
3
Not
Used
Leave these switches in the off
4
Not
Used
|
5
Not
Used
|
6
Not
Used
position.
7
DIS
EN
Calibration
Select
8
DIS
EN
Relay Driver Disable
Square Law Output (Dipswitch Position #1)
The square law output drives the analog voltage output differently than lineair output. When data is received by the
FEBC it is converted into the. Square law output. It is theorized that square law compensation matches more closely
to the sensitivity of the human eye with incandescent lamps. Figure 2 shows a graph of square law output vs linear
output.
NON-DIM Select
Since there are 4 relay drivers on this product, it is possible to use the FEBC relay drivers instead of the analog
outputs. By selecting the NON-DIM function (dipswitch position #2), the relay drivers will operate as NON-DIMS
providing a turn-on threshold which occurs at DMX512 50% output levels. This option does not affect the analog
outputs.
Calibration
When the power is turned on with dipswitch #7 on, all Outputs Wilt go to full. This will allow for calibration of the
Output levels Without the need for an input DMX or CMX source.
Summary of Contents for FEBC
Page 8: ...FEBC Operation Page 8...
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