Having completed the receiver board assembly, as described last month, it can be housed in a UB3-size utility box. As shown in the photo last month, it simply clips into place but first you will need to drill a hole in one end for IRD1, plus a hole in the other end for the external wiring.

Fig.6: the test LEDs are connected to the receiver as shown here. Follow the procedure in the text to synchronise the transmitters and test the receiver.

You will also have to drill matching holes in the lid for the Ack/Power and Arm LEDs (LEDs1 & 2).

Now for the initial set-up. First, install a jumper link in the minus (-) position for LK2. This will set the Strike2 output to toggle mode (note: LK2 must always have a jumper connection, either to the "+" or "-" position). Leave jumpers LK1, LK3 & LK4 out for now.

Next, set trimpots VR1 & VR2 to mid-range. These trimpots are later used to set the various time periods.