Macsense Connectivity Digital Wattmeter DWM-4 - Manual (Page 5)

- 5 -
You are now ready to mount the DWM PC board in the chassis.
___ Install the DWM-4 PC board in the chassis using four screws, nylon spacers, washers and nuts.
Do not drill out the holes in the PC board
___ Install U1 (the 68HC11) by carefully pressing it into place in its socket. Note that U1 has a
flattened corner that should match the socket.
___ Install U3 (the LM339) by carefully pressing it into place in its socket. Note that U3 has a notch that
should match the socket.
___ Install the ribbon cable with the red stripe connecting pin 1 of J7 to pin 1 of J7 (2 x 7 header) on
the front panel.
___ Install the ribbon cable with the red stripe connecting pin 1 of J8 to pin 1 of the LCD Module on the
front panel.
VHF/UHF Remote Sensor Assembly Instructions
___ Install the resistors, R1 and 2.
___ Install the diodes, D1 and D2. Note the band polarity.