Hi,
First, when you set your input mask, use [90][00][01][F0][01][01] (Set ANT Channel 0 Input Mask to Digital Using Input Mask 0F with Crossover Mode Enabled). Make sure that the ANT module configured in ANTware has identical parameters to your AT3 slave, i.e. Channel ID 49, 1, 5, Period 4Hz, RF frequency 66, etc.
After Loading the SensRcore script onto the AT3 device, connect it to the battery board and I/O board stack. Make sure that the battery board dip switches are as follows:
--Vcc--Gnd
1-------X-
2-X-------
3-------X-
4-------X-
5-------X-
Upon connecting the AT3 module to the battery board, all 4 LED's on the I/O board should light up, as this is the default setting. You will have about 30 seconds for the device to find the ANTware master before the device times out. If the device times out before it finds the master, simply toggle the reset button on the battery board above the dip switches.
At the bottom right hand corner of ANTware on the master device, you should see a 'Messaging' section. Under 'General', unclick 'Increment last byte every message'. In the 'Broadcast' message section Type this message in:
40-00-00-00-00-00-0F-0F
and click 'Set Broadcast'. This will turn off all 4 LED's. You can change the state of the LED's by changing the value of the last nibble of the message. Note that an LED on is a logic 0 and an LED off is a logic 1 in this case.
Let me know if that works,
Kassandra