Elecraft KDSP2 Manual - Manual (Page 5)

5
Integrated Circuits
OK Qty Reference Value
Marking Part Number
1 U1 ATmega8L ATMEGA8L E610015
1 U2 LM340T-5.0 LM340, 7805 E600024
1 U3 NJU6355ED NJU6355 E600038
Note that U3 is pre-programmed with the KDSP2 application code.
Hardware
OK Qty Description
Part Number
1 4-40x1/4” Philips pan head screw E700005
1 4-40x0.5” Aluminum hex male-female threaded spacer E700057
Miscellaneous
OK Qty Reference Value
Description Part Number
1 Y1 32.768 kHz Crystal, Cylindrical E660015
1 Z1 4 MHz Ceramic Resonator, 3-pin E660001
1 BT1 3V CR-2032 Lithium Cell E980039
1 DSPx Assembled DSP Module DSPX
1 DSP2 Printed Circuit Board E100179
1 KDSP2 Instruction Manual E740050
1 1/2 x 3/8 x 2 Gray Foam E980070
1 3/8 x3/16 x 2 Black Foam E980069
Installing Components
Please install the parts in the order shown. After you mount a part, you may solder it in place. Double
check to be sure the part is snug against the printed circuit board (PCB). After soldering, clip the leads
close to the PCB surface.
Use a temperature-controlled soldering iron, set between 700 and 735 degrees F (370 to 390 C). Keep the
tip clean. Use rosin-core solder. Use of improper flux, or improper cleaning procedures may result in
corrosion of the soldered joint. Sometimes this takes days or weeks to appear.
i
It is important that leads be clipped close to the bottom of the PCB. Use a pair of flush-
cutting pliers, or pre-trim the leads before soldering.
As you install the following parts, check the box only after you have inspected the solder connection and
clipped the leads (unless directed to not clip the leads).