DSO 15001K Manuale d'uso - Pagina 4

Sfoglia online o scarica il pdf Manuale d'uso per Hardware del computer DSO 15001K. DSO 15001K 4.

Stampa la pagina
How to Use
Display and Controls
Couple
Switch
Test Signal
output
BNC
Connector
(Signal Input)
Connectors
for Power Supply
(5.5 x 2.1mm)
Power
Switch
Connections
Power Supply:
Connect 9V DC power supply to the 5.5x2.1mm
jack at bottom (center positive). Power supply
voltage must be in the range of 8 - 10V.
Probe:
Connect probe to the BNC connector at top.
Operations
Basic Button Functions
[V/DIV]:
Select sensitivity or vertical position. The selected parameter indicator will be highlighted.
[SEC/DIV]:
Select timebase or horizontal position. The selected parameter
[TRIGGER]:
Select trigger mode, trigger level, and trigger edge. The selected parameter
[OK]:
Enter HOLD state (freeze waveform). Press it again will de-freeze.
[ADJ]:
Adjust the parameter seleted (highlighted). Short press toggles
Couple 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).
Specifications
Max realtime sample rate
1MSa/s
Analog bandwidth
0 -- 200KHz
Sensitivity range
5mV/div - 20V/div
Max input voltage
50Vpk (1X probe)
Input impedance
1M ohm/20pF
Resolution
12 bits
Record length
1024 points
JYE Tech Ltd.
- www.jyetech.com -
Horizontal
Position
Oscilloscope
Indicator
State
Vertical
Position
Indicator
Timebase
(s/div)
Couple
Sensitivity
(V/div)
Sensitivity
Button
Timebase
Button
Adjustment
Dial
Atte ntion
1.
Power supply voltage must not exceed
10V. Otherwise it may damage the ICs
inside.
2.
Allowed maximum signal input voltage
is 50Vpk (100Vpp) with the clip probe.
indicator
will be highlighted.
indicator
will be highlighted.
Fast Adjustment
mode.
Timebase range
500s/Div -- 10us/Div
Trigger modes
Auto, Normal, and Single
Trigger position
Center of buffer
Power supply
9V DC (8 – 10V)
Current consumption
~120mA @ 9V
Dimension
105 x 75 x 22mm
Weight
100 gram (without probe and PS)
More Functions
Functions
VPos Alignment
Trigger Level
Measurements
Readout
(This becomes
ON/OFF
trigger state for
firmware version
Save Waveform
-055 or later)
Recall Waveform
Trigger
Level
Indicator
Default Restore
Trigger
Center HPos
Mode
Trigger
Center Trigger
Slope
Level
Fast Adjustment
HOLD RUN
/
Button
Trigger
Sen sitivity
Bu tton
About Trigger State
Button
The trigger can have three states including Holdoff, Waiting, and Trigged. They are explained below.
Holdoff:
Trigger is disabled until a portion of sample buffer prior to a trigger point is filled with raw data.
Waiting:
Trigger is waiting for a valid signal slope.
Trigged:
A valid signal slope has been detected and registered.
Rolling Mode
When timebase is set to 50ms or slower and trigger mode is set to AUTO the scope will automatically switch to
Rolling Mode
where waveform shifts from right to left constantly. The trigger is disabled under this mode.
Troubleshooting
Problems
Bad V+
Bad V-
Bad AV-
Bad AV+
V1 does not close
to 0V
V2 does not close
to 0V
V3 does not close
to 0V
Bad V4
No Trace
JYE Tech Ltd.
Tel. +86-0773-2113856
Operations
Set Couple Switch to GND position. Hold down [V/DIV] button for about 3 seconds.
Hold down [OK] button for about 3 seconds. This will turn ON or OFF on-screen display of
measurements including Vmax, Vmin, Vavr, Vpp, Vrms, Freq., Cycle, Pulse width, and Duty cycle.
Press [ADJ] & [
SEC/DIV
] buttons simultaneously. The currently displayed waveform
will be saved to EEPROM. The existing data in EEPROM will be over-written.
Press [
ADJ
] & [
Trigger
] buttons simultaneously.
in Hold state.
Hold down [SEC/DIV] and [TRIGGER] buttons simultaneously for about 3 seconds.
Hold down [SEC/DIV] button for about 3 seconds. This will make the data at the center
of capture buffer displayed.
Hold down [TRIGGER] button for about 3 seconds. This will set the trigger level t0 the
medium value of signal amplitude.
Short press of [ADJ] toggles
Fast Adjustment
mode on and off for VPos, HPos, and
Trigger Level. A ">>" sign appearing at top of screen indicates
Possible Causes
1
2
Connector J7 defective.
Diode D2 open or damaged.
1
2
Bad C12 and/or C13.
U5 (7660) bad soldering or defective.
Hint: Check with R27 disconnected would let you know the issue is caused by load or source.
1
2
R27 bad soldering or wrong value.
Shorts between AV- and ground.
1
2
R26 bad soldering or wrong value.
Shorts between AV+ and ground.
1
SW1 not set to GND position.
2
Bad soldering on R1 and/or R2.
3
Bad soldering on U1.
1
2
SW1 not set to GND position.
Bad soldering on R3 and/or R4.
3
Bad soldering on U1.
1
2
Bad soldering on U1 and/or U2.
Bad soldering on R5 and/or R6.
1
Bad soldering on R13, R14, and R15.
1
Incorrect V4. If V4 is correct perform factory default restore as described in
2
Make sure trigger mode is AUTO and timebase is 1ms. Hold down [SEC/DIV] and [TRIGGER]
buttons simultaneously for 3 seconds.
www.jyetech.com
Tech forum: www.jyetech.com/forum
Recalled waveform is always displayed
Fast Adjustment
is ON.
2
Page 4