JYE Tech DSO 138 User Manual

Soldering Hints
1 Put leads through mounting holes from the side with
part outline. Ensue component evenly touch PCB.
2 Solder leads at the other side. Solder should fully
fill and cover soldering pads.
Avoid bridges between
neighbering pads.
3 Cut unused leads
flush with cutter.
1. Resistors
Note:
Always meter resistor
values before soldering
R7, R36 180
:
R8, R12, R13 120
:
R1, R14, R16 100K :
R9, R15, R26 1K :
R2 : 1.8M
R10 : 3K
R3 : 200K
R11 : 150
R4 : 2M
R38 :
1.5K
20K
R5 :
R28, R40 : 470
R6 : 300
R37, R39 : 10K
2. HF-Chokes
L1,L3,L4
: 100
3. Diodes
Cathode
D1
: 1N5819
D2
: 1N4004
(or 1N4007)
4. Crystal
Y1
: 8MHz
JYE Tech Ltd.
- www.jyetech.com -
DSO 138 Oscilloscope DIY Kit
User Manual
Tools you need
4
1 Iron (20W)
2 Solder wire 5
3 Multimeter 6
5. USB Socket *
J4
Note:
This connector is
optional.
6. Tact Switches
SW4, SW5,
SW6, SW7,
SW8
7. Ceramic Capacitors
C1, C9,
C10, C11,
H
C14, C15,
C16, C17,
C18, C20,
C23
C7, C8
C2 : 330pF
C3
: 3pF
C12, C13
C5
: 1pF
8. LED
Solder positive pole
(the longer lead) to
D3
the square pad
Before you start
Screw driver
1 Check part values & quantities against part list
Flush cutter
2 Always meter resistor values before soldering
Tweezers
3 Understand all part polarities and orientations
Install all SMD parts before proceeding
to Step1 if you purchased kit 13804K.
9. Pin header (for power)
USB mini -B
:
10. Transistors
: 6 X 6 X 5mm
11. Regulators
:
0.1 F
12 0p F
:
12. Capacitor trimmers
22pF
:
13. Power inductor
: 3mm, green
14. Electrolytic capacitors
Solder positive pole
(the longer lead) to
the square pad
15. Power connector
Face the opening
outward
2 Pin
J9 :
16. Pin-header (male) *
: 8550
Q1
:
Q2 9014
Packages are similar.
Do not mix up!
17. Pin-header (female)
: 79L05
U4
: 78L05
U5
Packages are similar.
Do not mix up!
18. Slide switches
C4, C6
: 5 - 30pF
19. BNC connector
L2 : 1mH/0.5A
/ 16 V
:
C19, C21, 100 F
C22, C24,
C25, C26
: DC005
J10
:
J5 1 X 3 pin
: 1 X 4 pin
J6
Note:
These pin-headers are
optional.
: 1 X 2 pin
J7, J8
:
2 X 20 pin
J3
2P3T
SW1, SW2, :
SW3
J1 : BNC
Note:
The thicker pins need
to heat up longer to get
good soldering result.
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