Whadda WSAH8098 User manual

ILLUSTRATED ASSEMBLY MANUAL
EN AUDIO ANALYZER
whadda.com
WSAH8098

2
Fig.1 Fig.2 Fig.3 Fig.4
Fig.5 Fig.6 reversed
Features
-measure:
»peak power (g.1)
»RMS power (g.2)
»mean dB (g.3)
»peak dB (g.4)
»linear audio spectrum (g.5)
»1/3 octave audio spectrum (g.6)
-auto or manual range selection
-peak-hold function
-speaker impedance selection
-language selection
-white backlit LCD
-easy panel mounting
Specications
-power measurement into 2, 4 or 8 ohms + bridged amp
option
-range: 300mW to 1200W @ 2 ohms
-sensitivity: -34dBu (15.5 mVrms)
-max. input level: 50Vrms @ 220k
-frequency range: 20Hz to 20kHz
-power supply: 12VDC / 75mA
-dimensions:
»display: 128 x 64pixels (46 x 23mm / 1.8 x 0.90”)
»front panel: 98 x 51mm / 3.8 x 2”
»mounting depth: 35mm / 1.37”

- 3 -
DO NOT BLINDLY FOLLOW THE ORDER OF THE
COMPONENTS ONTO THE TAPE. ALWAYS CHECK THEIR
VALUE ON THE PARTS LIST!

4
DIGITS Multiplier Tolerance
1st 2nd 3rd stripe 4th stripe
Black 0 0 0 x 1
Brown 1 1 1 x 10 1%
Red 2 2 2 x 100
Orange 3 3 3 x 1 000
Yellow 4 4 4 x 10 000
Green 5 5 5 x 100 000
Blue 6 6 6 x 1 000 000
Purple 7 7 7 -
Grey 8 8 8 -
White 9 9 9 -
Gold - - - x 0.1 5%
Silver - - - x 0.01 10%
RESISTOR COLOR CODE
10K OHM
+/- 1%
1st digit
2nd digit
3rd digit
multiplier
tolerance
100K OHM
+/- 5%
1st digit
2nd digit
multiplier
tolerance
0.6 W

5
Construction
R1 : 470 (4 - 7 - 1 - B)
R2 : 1K (1 - 0 - 2 - B)
R3 : 1K (1 - 0 - 2 - B)
R4 : 220K (2 - 2 - 4 - B)
R...
R...
R...
Basic module
D1 : 1N4007
Watch the
polarity!
The audio analyzer consist of three parts: the basic module, the display module and the front panel. If required you can mount this kit
into a housing, panel, ...
In this case use the display gap as a marker reference.
First we assemble the basic module.
1 Jumper wire
2 Resistors
J1
J2
J3
J4
J5
J6
R5 : 33K (3 - 3 - 3 - B)
R6 : 33K (3 - 3 - 3 - B)
R7 : 22K (2 - 2 - 3 - B)
R8 : 750 (7 - 5 - 1 - B)
R9 : 180K (1 - 8 - 4 - B)
R10 : 2K2 (2 - 2 - 2 - B)
R11 : 6K8 (6 - 8 - 2 - B)
R12 : 6K8 (6 - 8 - 2 - B)
R13 : 680 (6 - 8 - 1 - B)
R14 : 3K3 (3 - 3 - 2 - B)
R15 : 750 (7 - 5 - 1 - B)
R16 : 5K6 (5 - 6 - 2 - B)
R17 : 220 (2 - 2 - 1 - B)
R18 : 22K (2 - 2 - 3 - B)
3 Diode
4 IC-socket
Watch the position of the
notch!
IC1 : 8p
IC2 : 28p
5 Coil
L . . .
L1 : 4700µH (4 - 7 - 2 - B)
L . . .
L . . .
Construction

6
Construction
VR1 : LM317
6 Voltage regulator
7 Ceramic Capacitors
C1 : 100nF (104)
C2 : 100nF (104)
C3 : 100nF (104)
C...
C...
C12,C13 & X1 are not mounted !
8 Pin header
1
C9 : 4.7nF (472)
C10 : 470pF (471)
C11 : 47pF (47)
2
(a)
(b)
3
Solderside

7
Construction
Watch the position of the notch!
9 Electrolytic Capacitor
10 Board-to-wire connector
Watch the polarity!
C4 : 10µF
C5 : 10µF
C6 : 220µF
C7 : 220µF
C8 : 4,7µF
C14 : 4,7µF
SK1
11 Push button
SW1
Mount the button on the
solderside!
12 IC’s
IC1 : MCP6002-E/P
IC1 : VKVPA20
(programmed DSPIC33FJ32I/SP)

8
1 Capacitors
2 Male header
3 LCD
C1 : 1µF
C2 : 1µF
C3 : 1µF
C4 : 1µF
C5 : 1µF
C6 : 1µF
C7 : 1µF
C8 : 1µF
C9 : 1µF
C10 : 1µF
Be careful when solder-
ing the LCD connections.
Overheating will damage the
LCD screen.
!
Construction
Display module
Mount the female
connector on the
component side,
solder on the display
side !
Follow these steps for correct soldering
SMD components.

9
Assembly
1. Roughen the 4 bolts with a knife, a  le or some abrasive paper so it will be easier to solder them to the front panel.
2. Assemble the unit but do not yet tighten the bolts ( g.1).
3. Position the unit onto the rear of the front panel with the display is centred in the cut-away.
Temporarily  x the unit to the rear using non-permanent tape ( g. 2
Assembly

10
4. Solder 2 diagonal bolts to the front panel. Check if the display is still centred in the cut-away. Solder the remaining 2 bolts ( g. 3).
5. Now,  x the whole unit using the 4 nuts and remove the tape.

11
Connection
EX. “BRIDGED” AMPLIFIER OR HIGH POWER RADIO
Bridged Amplifi er
High-Power car radio
Activate BRIDGED function
in setup-menu
Do not connect !
+12V battery
GND
GND / chassis
+
battery
DO NOT CONNECT TO K8098
yellow
brown
red
orange
orange
Speaker OUT
Signal IN
Connection

12
Ex. Connected to speaker output Ex. Connected to speaker output
HINT FOR STEREO CONNECTION
12V battery
Amplifi er ex. K8081
Speaker OUT
Signal IN
12V battery
GND
From
ampli er or
LINE OUT
SIGNAL
TO K8098
10K
10K
L+
R+
yellow
brown
red
orange
yellow
brown
red
orange
Connection

13
Use
Set-up menu
Access to the Set-up menu by a “long” push
on the ‘mode’ button.
• Short press: changing settings
• long press: next function
• Keep pressed: save changes and exit
-Speed: refreshing the screen (Fast - Mid - Slow)
-Impedance: “2”, “4” or “8” ohms for speaker output power calculation, in case
the unit is connected to speaker output.
-Power: “AUTO” range or a maximum value that depends on the chosen imped-
ance.
-For impedance = 2: Possible choices are “1200 mW”, “12W”, “120W” or “1200W”
-For impedance = 4: Possible choices are “600 mW”, “6W”, “60W” or “600W”
-For impedance = 8: Possible choices are “300 mW”, “3W”, “30W” or “300W”
-Sticky Bar: “Yes” or “No”. When selected, small residual sticky bars appear
also on the third octave spectrum screen.
-Spectrum dB: “dBu” or “110 dB”. (110 dB stands for the “Power dB” display
which can range from 80dB to 110dB max, depending on the selected Power
range).
-Advanced settings: see pag. 16
Short press on the ‘mode’ button: selecting a meter-display.
Long press on the ‘mode’ button: opening the set-up menu.
Use

Advanced settings
First open the set-up menu with a long press
on the ‘mode’ button and choose the mode
“advanced settings”.
• Short press: changing settings
• long press: next function
• Keep pressed: save changes and exit
Language: UK / NL / FR / DE / ES
Contrast : choose a contrast between 1 - 20
Reverse video: normal or reverse display
True mean: Yes or no. If ‘no’ is selected then the display gives the integrated “peak
values”. If a pure sine wave is used both values will be the same.
Bridge amplifi er: Turn on in case of in car use with high power radio or ampli er.
Demo: showing the diff erent screen layouts, you can choose (slow - fast - off )
Use

15
PCB

Diagram
C7
220µF/25V
GND
C1
100n
GND
I O
ADJ
VR1 LM317
GND
C3
100n
GND
C4
10µF
GND
L1
47mH
C2
100n
GND
C5
10µF
GND GND
C6
220µF/25V
GND
R8
750
R1
470
R2
1K R3
1K
5
6
7
IC1B
TLV272
3
2
8
4
1
IC1A
TLV272
R9
180K
R7
22K
R6
33K
R5
33K
R4
220K
C8
4µ7
C11
47p
GND
GND
C10
470p
GND
R12
6K8
R16
5K6
C9
4n7
R17
220
VDD AVDD AVREF
AVDD
AVDD
GND
GND
R13 680
R10 2K2
R11 6K8
D1
1N4007
X1
7.37MHz
C13
27
C12
27
GNDGND
C14
4µ7 Tant.
VDD
GND
R15
150
AVREF
VDD
DB0
11
DB1
10
DB2
9
DB3
8
DB4
7
DB5
6
DB6
5
DB7
4
A0
14
RD
12 WR
13
CS1B
16
C86
3
VSS
1VDD 2
RES
15
A17
K18
LCD1
LCD DISPLAYTECH 64128N
AN0/VREF+/CN2/RA0
2
AN1/VREF-/CN3/RA1
3
PGED1/AN2/C2IN-/RP0/CN4/RB0
4
PGEC1/AN3/C2IN+/RP1/CN5/RB1
5
AN4/RP2/CN6/RB2
6
AN5/RP3/CN7/RB3
7
VSS
8
OSCI/CLKI/CN30/RA2
9
OSCO/CLKO/CN29/RA3
10
SOSCI/RP4/CN1/RB4
11
TDO/SDA1/RP9/CN21/RB9
18
AVDD 28
AVSS
27
AN9/RP15/CN11/RB15
26
AN10/RP14/CN12/RB14
25
AN11/RP13/CN13/RB13
24
AN12/RP12/CN14/RB12
23
SOSCO/T1CK/CN0/RA4
12
VDD 13
PGED3/ASDA1/RP5/CN27/RB5
14
PGEC3/ASCL1/RP6/CN24/RB6
15
INT0/RP7/CN23/RB7
16
TCK/SCL1/RP8/CN22/RB8
17
VSS
19
MCLR
1
VCAP/VDDCORE
20
PGED2/TDI/RP10/CN16/RB10
21
PGEC2/TMS/RP11/CN15/RB11
22
IC2
DSPIC33FJ32GP202-I/SP
GND
VDD
SW1
SW KRS0611
VDD
GND
R18
22K
R14
3K3
1
2
3
4
SK1
CON BTWM4
GND
+V
+V

Supply voltage (V) - led voltage (V)
required current (A) = series resistance (ohms)
required current (A) = series resistance (ohms)
Required resistor power handling=
voltage over resistor x current passed trough resistor
9V - 1.7V
0.005A = 1460 ohm
9V - (3 x1.7V)
0.005A = 780 ohm
(9V - 1.7V) x 0.005A = 0.036W
closest value :
use a 1k5 resistor
use an
820 ohm resistor
a standard 1/4W resistor
will do the job
Supply voltage (V) - (number of leds x led voltage (V))
How to Calculate the series resistor:
Example: operate a red led (1.7V) on a 9Vdc source.
Required led current for full brightness: 5mA (this can be found in the datasheet of the led)
LEDs in series:
Example: 3 x red led (1.7V) on 9V battery
Required led current for full brightness: 5mA
(this can be found in the datasheet of the led)
Leds feature a speci c voltage
drop, depending on type and
colour. Check the datasheet for
exact voltage drop and rated
current !
Never connect leds in parallel
Leds and how to use them
An open collector output can be compared to a switch which switches to
ground when operated
Example: How to switch an LED by means of an open collector output
open collector outputs

Modications and typographical errors reserved. © Velleman Group nv, Legen Heirweg 33 - 9890 Gavere (België)
WSAH8098 - 10082021
.
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