8
8-STATION SENDER
Figure 8-1
PROGRAMMING A DECODER
An Underhill Decoder p/n TW-TK-DEC-1 is connected to each valve solenoid to be
operated from the Novo and a host controller. Each decoder must be programmed
using the Underhill Portable Programmer p/n DEC-PROG-115 or DEC-PROG-230
with the corresponding valve station number. See Figure 8-2.
PORTABLE PROGRAMMER FOR DECODERS
Figure 8-2
To program a Decoder complete the following steps;
1. Plug the red and black wires of the Decoder into the Programmer’s red and
black push terminals.
2. Plug the two yellow wires of the Decoder into the Programmer’s yellow
terminals. These are non-polarized so it makes no difference which yellow
wire is connected to a yellow terminal.
3. Set the decoders station number by pressing one of the gray “Raise or
Lower” buttons.
4. Press the red “Program” button to enter the station number.
5. Press the Green “Test” button to confirm the entered value has been saved.
If saved the green “Pass” LED will illuminate and the Decoder’s programmed
number will display on the LED’s. If the red “Fail” LED illuminates re-try
programming the decoder with the same or a different station number. Be
sure to retest before disconnecting from the Programmer.
6. Write the programmed Decoder number with an indelible pen in the little
white box on its label.
