INTERNAL JUMPER / DIPSWITCH SELECTIONS
Caution: The follow procedures should be performed by qualified personnel only.
Remove all power and remove the cover of the dimmer pack. Locate and change jumper or dipswitch settings on the firing card as
indicated in the following section.
Softstart
The Softstart mode of operation forces at least a 1/10th second delay between the output being full off to the output being full on
to allow a more gradual warming of the lamp filaments. Thermal shock and inrush currents are reduced thereby increasing lamp
life. Softstart should not be used when quick dimmer response is desired such as chasing.
To activate Softstart; remove the jumper block from the pin marked J1 on the firing card or move internal dipswitch S10 to the off
position. Replacing the jumper block or turning the switch on will deactivate Softstart.
NOTE: The channels of the DDS rack dimmer pack configured for NON DIM operation will not be affected by softstart.
Non Dim Channels (Relay Mode)
Any of the channels of the DDS rack dimmer pack may be configured as NON DIM channels. This will cause the output of the
channel to go to full on whenever the input signal is over 15%. When the input signal drops to less than 10%, the channel output
goes to full off. This is the equivalent of a zero-crossing solid state relay.
To configure a channel for NON DIM operation simply remove the jumper block from the pins on the firing card as indicated or
turn the switch indicated OFF. Replacing the jumper block or turning the switch ON will restore dimming operation.
SWITCH OR JUMPER OFF = NON DIM
SWITCH OR JUMPER ON = DIMMER
DIPSWITCH VERSION
JUMPER VERSION
S1 S10
CHANNEL SWITCH JUMPER CHANNEL SWITCH JUMPER
1 S1 J10 2 S2 J9
3 S3 J8 4 S4 J7
5 S5 J6 6 S6 J5
7 S7 J4 8 S8 J3
DDS 86/88/96/9800 DIMMER PACKS INSTALLATION AND OPERATION GUIDE
Software Revision 1.41, Version C UL, Mfg Q3/96, and above INTERNAL JUMPER / DIPSWITCH SELECTIONS
NSI CORPORATION 9
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