Mode 7: Chase
Each contact closure will be triggered in turn. This mode is intended as a test feature. Use the DMX channel controlling contact closure #1 to set the group of relays involved: 0% = no contact closures; 100% = all twelve contact closures. Use the DMX channel controlling contact closure #2 to set how long the relays are to remain closed: 0% = <10ms; 100% = 2 seconds.
Mode 8: Single Channel Select
In this mode, one DMX slot controls all 12 relays. Raising the DMX level of the start channel will trigger each contact closure in turn, from none up to the twelfth.
Trigger values are shown in the chart below. These values are also used by Mode 9.
| Relay # | Decimal | Percentage |
| 0 | 0 | 0 |
| 1 | 20 | 8 |
| 2 | 40 | 16 |
| 3 | 60 | 24 |
| Relay # | Decimal | Percentage |
| 0 | 0 | 0 |
| 1 | 20 | 8 |
| 2 | 40 | 16 |
| 3 | 60 | 24 |
| Relay # | Decimal | Percentage |
| 0 | 0 | 0 |
| 1 | 20 | 8 |
| 2 | 40 | 16 |
Mode 9: Single Channel Build
This mode can be handy in displays where you’re adding lights as the DMX level raises. Think a segmented audio VU meter or perhaps an LED lamp where more DMX means more LEDs, hence brighter. Raising the DMX level of the start channel will trigger each contact closure additionally. At zero percent, no contact closures are trigger, while at full all twelve contact closures are triggered.
The 1003 also has a DMX Present relay to indicate when DMX is active (Normally Open contact) or absent (Normally Closed contact). You might tie all your commons through this relay if you don’t want any activity when the console is not present. (Do not exceed the 3A working rating of the relay!) We’ll discuss how to use DMX Present relays in detail in Tip #8.