DN138 01v04_AssemblyGuide User Manual 138 New S

User Manual:

Open the PDF directly: View PDF .
Page Count: 4

Iron (20W)

1

Solder wire

Multimeter

Screw driver

User Manual

Rev. 04

DSO 138 Oscilloscope DIY Kit

2

3

4

Flush cutter

5

Tools you need

Tweezers

6

Assembly Main Board and LCD board (follow the order as numbered)

Step 1

-www.jyetech.com -

JYE Tech Ltd.

1. Resistors

Always meter resistor

values before soldering

Note:

R1,R14,R16 100K

R2 1.8M

:

:

R3 200K:

R4 2M:

R5 20K:

R6 300:

R7, R36 180

R8,R12,R13 120

:

:

R9,R15,R26 1K

:

R10 3K

:

R38 1.5K

:

R28, R40 470

:

R37, R39 10K

:

L1,L3,L4 100 H

2. HF-Chokes

:

D1 1N5819

3. Diodes

:

D2 1N4004

:

(or 1N4007)

Y1 8MHz

4. Crystal

:

J4 USB mini -B

5. USB Socket *

:

6 X 6 X 5mm

6. Tact Switches

:

SW4, SW5,

SW6, SW7,

SW8

7. Ceramic Capacitors

0.1 F



:

330pF:

3pF:

C1, C9,

C10, C11,

C14, C15,

C16, C17,

C18, C20,

C23

1pF:

C7, C8 120pF

:

C12, C13 22pF

:

C2

C3

C5

D3

8. LED

:3mm, green

Solder positive pole

(the longer lead) to

the square pad

J9 2Pin

9. Pin header (for power)

:

Face the opening

outward

8550

10. Transistors

:

Q1

9014

:

Q2

Cathode

79L05

11. Regulators

:

U4

78L05

:

U5

C4, C6 5-30pF

12. Capacitor trimmers

:

L2 1mH/0.5A

13. Power inductor

:

14. Electrolytic capacitors

:100/16VF

Solder positive pole

(the longer lead) to

the square pad

C19, C21,

C22, C24,

C25, C26

DC005

15. Power connector

:

J10

16. Pin-header (male) *

1 X 3 pin

:

J5

1 X 4 pin

:

J6

17. Pin-header (female)

:1X2pin

J7, J8

:2X20pin

J3

SW1, SW2,

SW3

2P3T

18. Slide switches

:

J1 BNC

19. BNC connector

:

Put leads through mounting holes from the side with

part outline. Ensue component evenly touch PCB.

1

Solder leads at the other side. Solder should fully

fill and cover soldering pads.

Avoid bridges between

neighbering pads.

Cut unused leads

flush with cutter.

2

3

Soldering Hints

Check part values & quantities against part list

1

Always meter resistor values before soldering

Understand all part polarities and orientations

2

3

Before you start

Page 1

Packages are similar.

Do not mix up!

Attention!

Packages are similar.

Do not mix up!

Attention!

The thicker pins need

to heat up longer to get

good soldering result.

Note:

R11 150

:

These pin-headers are

optional.

Note:

Applicable models: 13803K, 13804K

Install all SMD parts before proceeding

to Step1 if you purchased kit 13804K.

Important !!!

This connector is

optional.

Note:

1

C. Verify

Connect power supply again. You should see LCD

lights up and oscilloscope panel displayed.

2Press various buttons and move switches to verify

their functions.

1)Makeasmallringwitha

lead cut-off.

20. Test signal ring

2 X 20 pin

22. LCD Board

:

J1

1 X 2 pin

:

J2, J3

2 ) Solder the ring to the two

holes of J2 (as shown in

the photo).

21. JP3

Short JP3 with solder Note: Install to the side

opposite to LCD panel.

Test and Use

Step 2

NOTE: You need a 9V DC power supply (at least 200mA capacity)

to run the scope. This power supply is not included in the kit.

1

A. Check voltages

2

3

Apply 9V power to J10 (or J9).

2Check voltage at TP22. It should be around +3.3V.

3If voltage at TP22 is good disconnect power. Short JP4

with solder .permanently 1

B. Attach LCD board

Plug LCD board into the female headers J3, J7, and J8

on the main board.

1

A. Use

Attach probe clips to J1.

2Touch the red clip with your finger. Do you see signal

from your finger?

1

-www.jyetech.com -JYE Tech Ltd.

Troubleshooting

Is voltage at V+

good? Check power

supply

Is R36 value correct

and soldered good?

Do you get about 3V

between J1 pin 16 &

18 on LCD board?

Fix R36

LCD Dark

No

No

Yes

Yes

(No backlight)

No

Yes

Check R36 and

power again

Check LCD

board

Press SW8. Does LED blink? Check Y1, C12, C13

Check LED installation

Check +3.3V voltage

CheckJ3solderingfor

possible opens or shorts

No Display

Yes

No

Check J1 soldering on LCD

board for possible opens

or shorts (use Test Mode)

2

8.60V

9.39V

8.34V

3.3V

-1.39V

2.16V

0.81V

6.43V

0.19V

5.02V

3.3V

4.99V

-5.0V

-8.08V

-8.11V

1.66V0V

*

*

**

*

*

*

**

**

Vol tag e

References

(Input Voltage)

*: These voltages are input voltage dependent. The values

shown were measured when input voltage was 9.39V.

**: These voltages are measured when CPL switch (SW1)

is set to GND position.

NOTES:

Place the negative pen of volt-meter

here to do voltage measurements.

The assembly should look like this

after you have finished all parts

Short JP4 if it has not been

done. See Step 2 above.

Check U2B, U2C and

related parts around

these two amplifiers

No

Set CPL switch to GND

and measure V1 and V2.

Are they correct?

Check R12 and C8

Visit forum for detailed

troubleshooting guide

Are the values of AV+ and

AV- c o r r e c t ?

No Trace

Ye s

No

Ye s

The voltages in the photo are for reference only.

The voltages on your board could be different.

Buttheyshouldbeclosetothevaluesshown.

NOTE 1:

www.jyetech.com/forum

Tech Support:

TriggerLED blinking twice

indicates booting-up is good.

Page 2

Test M ode

What it is and how it works

Test Mode is used to find out possible opens (for all port pins) and shorts

(for pins PB0 - 15 and PC13-15). When entered it first checks PB and PC

pins with special patterns to find out possible shorts. If found LED will be

fast blinking. Otherwise, it generate 3.3V and 0V alternatively at each port

pins (PA, PB, PC and PD) in cycle of about 4 seconds. These signals can be

used to check for opens.

How to use

HolddownSW4andpressRESETtoenterTestMode.

If you see LED fast blinking that means there are shorts on PB or PC pins.

You need to find out the shorts first.

If you see LED slowly blinking use a volt-meter to check each pin related

connections that are suspected open. When you dont see voltage change

at a spot which is supposed being connected to a port pin there may be

open between the spot and the port pin.

1.

2.

3.

PIN 1

Make sure U1 and LED working

(you see LED blinks twice at pressing

RESET) before using Test Mode.

NOTE 3:

LED will be blinking constantly if MCU

(U1) can not detect valid LCD controller.

Check LCD pin-header soldering.

NOTE 2:

HOLD RUN/

Connectors

for Power Supply

Trigger Level

Readout

Horizontal

Position

Oscilloscope

Mode

Connector

for Probe

Couple

Selection

Sensitivity

Selection 1

Sensitivity

Selection 2

Vert i cal

Position

Indicator

Sensitivity

Couple

Timebase

Trigger

Mode

Trigger

Slope

Trigged

Indicator

Trigger

Level

Indicator

Parameter

Selection

Parameter

Adjustment

Reset

Button

[+] or [-]:

[SEL]:

[OK]:

[CPL]:

[SEN1]:

[SEN2]:

How to Use

Display and Controls

Connections

Power Supply: Connect DC power supply to J9 or J10. The power

supply voltage must be in the range of 8 - 12V.

Probe: Connect probe to J1.

Power supply voltage must not exceed

12V. Otherwise U5 will get hot.

Attention

1.

Allowed maximum signal input voltage

is 50Vpk (100Vpp) with the clip probe.

2.

Operations

Press on [SEL] button: Select parameter to be adjusted. The selected parameter will be highlighted.

Press on [+] or [-] button: Adjust the parameter selected by [SEL] button.

Press on [OK] button: Freeze waveform refresh (entering HOLD state). Press on it again will de-freeze.

Change [CPL] switch: Set couple to DC, AC, or GND. When GND is selected the scope input is isolated from input

signal and connected to ground (0V input).

Change [SEN1] or [SEN2] switch: Adjust sensitivity. The product of [SEN1] and [SEN2] settings makes the

actual sensitivity which is displayed at the lower-left corner of the panel.

Press on [Reset] button: Perform a system reset and re-boots the oscillscope.

0V Line Alignment

Sometimes you may find the 0V line (the trace corresponding to 0V input voltage) does not match with the VPOS

indicator at the screen left border. This can easily be fixed by performing the 0V line alignmentfunction. First,

set the couple switch [CPL] to GND position. Then press on [SEL] button to make VPOS indicator highlighed and

hold down [OK] button for about 2 seconds. You will set the trace aligned toVPOSindicatorwhenyourelease

[OK] button. You may see some residue mismatch remains at the highest sensitivity settings. This is normal.

Probe Calibration

Because there is always some capacitance between scope input and

ground probe needs to be calibrated to achieve better measurement

results for high frequency signals. This can be done with the help of

the built-in test signal. To do this please follow the steps below.

Connect red clip to

test signal output

Leave black clip

un-connected

Connect the red clip to the test signal terminal and leave the

black clip un-connected (see photo at right).

1.

Set [SEN1] switch to 0.1V and [SEN2] switch to X5.

Set [CPL] switch to AC or DC.

2.

Adjust timebase to 0.2ms. You should see waveform similar

to that shown in photos below. If traces are not stable adjust

trigger level (the pink triangle on right screen border) so as

you get a stable display.

3.

Turn C4 (capacitor trimmer) with a small screw driver so that

the waveform displays sharp rightangle (photo C).

4.

C4

C6

Set [SEN1] switch to 1V and [SEN2] switch to X1while keep all other

settings unchanged. Adjust C6 so that sharp rightangle waveform is

displayed.

5.

ANot enough B Too much CGood

Analog bandwidth

Sensitivity range

Resolution

Record length

Max realtime sample rate

Timebase range

Max input voltage

Input impedance

Power supply

Current consumption

Dimension

Weight

1MSa/s

0 -- 200KHz

10mV/div - 5V/div

50Vpk (1X probe)

1M ohm/20pF

12 bits

1024 points

500s/Div -- 10us/Div

9V DC (8 12V)

~120mA

117x76x15mm

70 gram (without probe)

Trigger modes

Trigger position range

Auto, Normal, and Single

50%

Specifications

Waveform Save/Recall

Press [SEL] & [+] simultaneously: Save currently displayed waveform to non-volatile memory.

www.jyetech.com

JYT Tech Ltd.

Tel. +86-0773-2113856

Triggers and Their Modes

Triggers are events that indicate signal voltage acrossing

a set level (i.e. trigger level) along a specified direction

(i.e. trigger slope, rising or falling). Oscilloscope uses

triggers as reference points in time for stable waveform

display and measurements.

In auto mode oscilloscope will perform display refresh no

matter triggers happen or not. When triggers are detected

waveform display will be displayed with reference to

trigger points. Otherwise, display waveform at ramdom

reference points.

Auto Mode

In normal mode oscilloscope will only perform display

refresh when there are triggers. If no triggers happen

waveform display will stay unchanged.

NormalMode

Single mode is the same as normal mode except that

oscilloscope will enter HOLD state after a trigger has been

detected and waveform display has been updated.

Single Mode

Normal and single modes are useful for capturing sparse

or single waveform.

Selection

(s/div)

(V/div)

Tech Support: www.jyetech.com/forum

Page 3

-www.jyetech.com -

JYE Tech Ltd.

Turn On/Off Readouts

Press [SEL] so that timebase is highlighted. Hold down [OK] button for about 2 seconds. This will turn

on/off measurement readouts.

Press [SEL] & [-] simultaneously: Recall saved waveform

Page 4

-www.jyetech.com -JYE Tech Ltd.

5

5

4

4

3

3

2

2

1

1

D D

C C

B B

A A

83V

.

*

AC

01V

.

1V

GND

X1

X2

X5

10mV

DC

USE SWD DEBUG

MODE ONLY

V1

V2

V3

AIN

V-

TLVL

DC 9V

-

+

Analog Channel

USB

Uart

Power Supply

-

+

Buttons SWD Port LCD Module Connector

MCU

JYE Tech Ltd

.

WWW J.YETECH.COM

jyetek

@

gmail.com

Notes

:

Part values used could be different to

the values shown Plea

.

se refer to part

list

.

1

.

2

.

Parts in dash line boxes

-

are SMD devices.

Test Signal Terminal

33V

.

5V

86V

.

08V

.

-.

14V

64V

.

86V

.

*

*

*

02V

.

*

-.

81V

*

-

5V

*

93V

.

*

These voltages are power voltage dependent The

.

values shown were measured at 9 3V power voltage

. .

*

Caution

:

Power supply voltage can

not be higher than 12V

.

0V

16V

.

**

**

**

These voltages were measured

when SW1 is at GND position.

CPL

SEN1

SEN2

Trigger

Level

OK

+

-

SEL

VGEN

IM0

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

ADCIN

VSENSEL2

VSENSEL1

CPLSEL

LCD_nRD

LCD_nRESET

LCD_nCS

LCD_RS

LCD_nWR

BTN2

BTN1

BTN3

BTN4

TRIG

RX1

TX1

TX1

RX1

USBDM

USBDP

USBDM

USBDP

SWCLK

SWDIO

SWDIO

SWCLK

LCD_nWR

DB1

LCD_RS

DB7

LED K4-

LCD_nRD

DB3

DB5

DB0

IM3

LED A-

DB6

DB2

LCD_nRESET

DB4

LCD_nCS

LED K2-

LED K3-

LED K1-

TESTSIG

VGEN

BTN4

V-MON

TESTSIG

VSENSEL1

VSENSEL2

CPLSEL

LED

BTN3

BTN2

BTN1

LED

TL_PWM

V-MON

AV-

AV+

AV+

AV+

+3.3V

+.33V

V+

AV-

V+

+3.3V

+5V

+.33V

AV+

+3.3V

+.33V

+.33V

AV-

AV-

AV-

AV-

AV-

V+

+3.3V

+.33V

+.33V

AV+

AV+

AV+

AV+

AV+

+3.3V

+.33V

SW8

R1 100K

TP2

TP24

C14

0.1u

C12

22pF

TP6

C7

120pF

TP12

C8

120pF

+

C21

100uF

J6

1

2

3

4

C10

0.1u

JP2

TP13

R16

100K

J5

1

2

3

R9 1K

U1

STM32F103Cx

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

VBAT

PC13/TEMPER R/TC

PC14/OSC32_IN

PC15/OSC32_OUT

PD0/OSC_IN

PD1/OSC_OUT

nRST

VSSA

VDDA

PA0

PA1

PA2

PA3

PA4

PA5

PA6

PA7

PB0

PB1

PB2

PB10

PB11

VSS_1

VDD_1

PB12

PB13

PB14

PB15

PA8

PA9

PA 10

PA 11

PA 12

PA 13

VSS_2

VDD_2

PA 14

PA 15

PB3

PB4

PB5

PB6

PB7

BOOT0

PB8

PB9

VSS_3

VDD_3

R41 10K

J10

2

3

1

TP31

J7

1

2

L2

1mH/1A

C9

0.1u

R42 1K

J8

1

2

R11

TP28

D1

1N5819

12

R23 10K

TP29

Q2

9014

2

SW4

+

C19

100uF

R18 3.3K

TP30

U4

79L05/TO92

2 3

IN OUT

C11

0.1u

TP21

JP5

SW3A

2

1

3

4

R21 3.3K

SW1A

2

1

3

4

C23

0.1u

U5

LM78L05/T92

3

2

1

VIN

GND

VOUT

J9

1

2

Q1

8550

1 3

TP20

J1

BNC

J2

1

2

+

-

U2B

TL084/SO

5

6

7

+

-

U2C

TL084/SO

10

9

8

SW2A

2

1

3

4R7

180

R31 1.5K

+

C25

100uF

TP3

SW6

TP5

R4 2M 1%

R38

1.5K

+

C24

100uF

R35 10K

JP6

D2

1N4004

R26 1K

R32 1K

TP1

D3

TP4

TP33

C3 3pF

+

-

U2D

TL084/SO

12

13

14

R33 1K

TP26

R8

120

C18

0.1u

C2 220pF

JP3

R24 3.3K

C6

30pF

R34

10K

TP23

R28 470

R30 22

TP10

U3

LM1117 -3.3/TO263

1

3 2

4

GND

VIN VOUT

VOUT

R40 470

JP4

C20

0.1u

L3

100uH

R2 1.8M 1%

SW1B

6

5

7

8

C5 1pF

R37

10K

R14 100K

R17 10K

TP16

J4 USB_mini B_

1

2

3

4

5

VBUS

D-

D+

ID

GND

R36

180

R13

120

R19

1.5K

TP22

R3

200K 1%

TP9

R39

10K

R29 22

R6

300

Y1

8MHZ

+

C26

100uF

TP25

TP17

+

C22

100uF

SW3B

6

5

7

8

L4 100uH

C4

30pF

JP1

TP7

TP14

R25

1.5K

R5

20K 1%

SW2B

6

5

7

8

TP27

R12

120

R20 10K

+

-

U2A

TL084/SO

3

2

1

C16

0.1u

TP15

R10 3K

C1

0.1u

L1

100uH

R15

1K

SW5

TP8

R22

1.5K

C17

0.1u

J3

LCD HEADER

12

34

56

78

910

11 12

13 14

15 16

17 18

19 20

21 22

23 24

25 26

27 28

29 30

31 32

33 34

35 36

37 38

39 40

R27 1K

C15

0.1u

TP11

TP32

SW7

C13

22pF