DSO 15001K Manuale d'uso - Pagina 3

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

Stampa la pagina
Step 3
Assembly Front Module
1. Solder Rotary Encoder
Mount to the small PCB
(PN: 109-15002-00A)
Note:
Please pay attention to the
orientation of PCB. Use the
side with outline marking.
2. Assemble Front Module
1
Fit LCD to front panel as shown below.
2 Fold the main board over while keeping
LCD in place.
3 Mount rotary encoder board to the
front plate with screws and solder the
board to J2 of the main board.
A.
Mount with
C.
Solder here
screws
(KA2x4)
Important !
B.
Make sure PCB evenly
touch the front plate
while doing C.
JYE Tech Ltd.
- www.jyetech.com -
Step 4
Check Voltages
Verify voltages on the analog board
1
Attach the analog board to the main board
by mating J2 on the analog board to J4 on
the main board (see photo).
2 Apply 9V DC power supply to J7 (or J6) on
the main board.
3 Set couple switch to GND position.
4
Check voltages at the points
as shown in the photo.
References
(*) Input dependent
Place negative
Input
+9.30V
pen at DGND
V+
(*)
+8.35V
AV+
5.0V+/-2%
V-
(*)
-7.86V
AV-
-5.0V+/-2%
V1
0V
V2
0V
V3
0V
V4
~1.65V
Apply power
here
Step 6
Put all parts together
Final assembly
1
Screw the analog board to
back cover with the top
bracket attached
Screws
Top bracket
KA2x4
(4 positions)
Put test signal
terminal through
the small slot
5
Attach the front frame
Front frame
Important !
Alw ays remove power before
connecting or disconnecting
the analog board.
1
Mea surem ents applicable
for "E" version PCB
(PN:109-15001-00E)
2
3
V2
Couple
V1
switch
V3
4
AV-
AV+
5
V+
V4
V-
Analog board
part number
(DC jack is 5.5mm dia.
with 2.1mm core)
It is strongly recommended to read the article "FAQ, Tips, and Troubleshooting"
at
www.jyetech.com/forum
2
Combine the front module and
the back cover
6
Firmly press the frame in
Screws
(4 positions)
Step 5
Calibration
Adjust trimmers C3 and C5
Connect the red clip to the test signal terminal and leave the
black clip un-connected (see photo at bottom).
Apply power and boot. Hold down ADJ dial for 3 seconds to
bring up Test Signal amplitude display at lower-left corner.
Push ADJ to set the amplitude to 0.1V.
Set sensitivity to 50mV and adjust trigger level so that
waveform stable (see "How to Use" at page 4).
Tuning C3 so that sharp rectangle (photo B at left) is obtained.
The adjustment for C3 is done.
Similarly, for C5 calibration push ADJ to set test signal to
3.3V. Change sensitivity to 1V. Tuning C5 so that sharp
rectangle waveform is obtained. The adjustment is done.
C3
C5
under the sub-forum "DSO Shell".
3
Make sure receptacle (J4)
4
mate with pin-header (J2)
7
Screw up at the back
PA2.3x8
Tips:
Pe rform VPos alignment
before calibrating C3 and C5.
A.
Not enough
B.
Good
C.
Too much
Attach bottom bracket before
holding the two modules
together
Bottom bracket
8
Attach knob cap and done!
Knob cap
Page 3