PCB & Photodiode Assembly Guide

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PCB AND
PHOTODIODE
ASSEMBLY
GUIDE

Main Power Board
Numbers refer to Parts List numbering
1. Solder all resistors to their respective places (red
dashed circles). Resistor values are printed on the
boards. There are 11 resistors total.

2. Flip the board over. Solder all standard male headers
(#E21) into their positions (red dashed circles). Solder all
standard female headers (#E22) into their positions
(black dashed circles). There are two headers each.

Female Headers (#E22)

3. Flip the board right-side. Solder the 2x3 IDC headers
(#E17) to their positions (red dashed circles), with the
orientation of the tab on the header matching the PCB
silkscreen. There are two headers.
4. Solder the 2x5 IDX header (#E18) to its position (black
dashed cirlce), with the orientation of the tab on the
header matching the PCB silkscreen. There is one
header.

S1

5. Solder the 4-pin JST-headers from the JST
connector kit (#E12) to its positions (red dashed
circles). There is one header.
6. Solder the 2-pin screw-terminal header
(#E23) to its position (black dashed circle).
There is one header.

7. Solder the 0.1uF capacitor (#E25) to its
position (red dashed circle). There is one
capacitor.
8. Solder two 4-pin female headers (#E22)
to their positions (both within the black
dashed line). Insert 100Mohm resistors into
each of these headers. These serve as load
resistors for the photodiode.

9. Solder all the MOSFETs (#E15) to the
positions (red dashed circles) with orientation
matching the silkscreen labels. There are five
MOSFETs.
10. Solder the 5V regulator (#E16) to its
position (black dashed circle) with orientation
matching the silkscreen labels. There is one 5V
regulator.

S2

LED Connection Board
Numbers refer to Parts List numbering.
This board decouples the excitation source connections from the main board.

1. Solder the 2x3 IDC header (#E17) (red dashed
circle).

2. Solder the 4-pin female headers (#E22) (red
dashed circles). Place a resistor into each of the
headers based on specific amperage needs for
the LEDs to be used, given a 12V supply. Recommended values are:
LED 1-3 (built-in excitation sources) - 330 ohm
LED 4 (auxiliary source) - 330 ohm
LED 5 (TOP White Light) - 330 ohm
LED 6 (TOP Violet Light) - 470 ohm

3. Solder the 2-pin JST headers from the JST
connector set (#E12) (red dashed circles).

S3

Power Switch Board
Numbers refer to Parts List numbering

1. Solder the 2-pin screw terminal block (#E23)
to its position (red dashed circle), with its orientation matching the silk screen.

2. Flip the board over. Solder the rocker switch
(#E19) to the back of the PCB in its position (red
dashed circle), with its pins matching the corresponding silk screen on the front side.

S4

Photodiode Board
Numbers refer to Parts List numbering

1. Solder the 2x3 IDC connector (#E13) to the
front of the PCB in its position (red dashed circle).
with orientation matching the silk screen. Numbers on the silkscreen correspond to the pin
numbers of the photodiode specification sheet.
2. Place the photodiode (#O19) into the Thorlabs photodiode mount (#O13)

3. Flip the PCB over. Solder the photodiode to
its position (black dashed circle).

S5

Photodiode Mount Assembly
Numbers refer to Parts List numbering

Flange adapter
PCB

Screws

Bolts

SMA adapter
Pin header
CCD Detector
Photodiode Diode adapter

Plate

[Skip to Step 4 if you have constructed the Photodiode board already]
1. Solder the 2x3 pin header (#E13) onto the photodiode PCB (#E29).
2. Place the photodiode (#O19) through the photodiode adapter (#O13).
3. Solder the photodiode to the PCB (#E29) such that the photodiode adapter is flush with the PCB.
4. Place the photodiode adapter and PCB assembly into the SM1-to-Flange adapter (#O21). The diode
adapter should be inserted into the back end of the flange adapter. (side without the flange).
5. Place the SM1-to-SMA adapter (#O12) into the flange of the SM1-to-Flange adapter.
6. Place the entire SM1-to-Flange adapter into the acrylic wall mount (#L12) as shown above, and fix it into
place with screws and hex nuts (#F29, F28).

S6
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