USB and DC control;
S_II
For technicians and partly for sales managers!
The following description handles the electronics and electrical
components and cabling, used in Pannoramic SCAN_II.
The description is derived from the chapter "USB and DC control"
of SMD_type scanners.
Detailed
differences and improvements regarding the scanner SCAN_II can be found in: Enhancements_2016
Contents
Construction of the
stepper motor
Important
remark
·
After maintenance or
services and performed tests of the scanner are 100% finished, protective
ground connections and other safety regulations related to hazardous voltages,
accessible conductive parts and dangerous to life parts have to be checked
(again).
·
For safety regulations regarding
human health and scanner functionality please refer to: Precautions
The connected power supply MPU 100-108 with an input
voltage range of 100V~ to 240V~ AC and an output voltage of 24V- DC supplies the
motors and other internal units with power. Inside the USB-controller, the
DC-controller as well as in the stepper motor electronics a local power supply
is located and these create further, required voltages.
·
The power switch can also be used to switch off the
entire scanner if mechanical jamming or any other emergency situation occurs!
Important
Please see: Task Manager
230V~
or 100V~
The alteration of the mains power input in the range from 100V~ to 240V~
is reduced to the use of the appropriate mains power cable!
If the mains power is changed from 230V~ to 100V~ or vice versa, no
alterations are required inside the scanner; the change of the mains power is
fully handled by the input voltage range of the power supply.
Modifications since
summer 20116
The
BNC connector is left out and the trigger cable connector works for the scan
camera, especially for the
“Grasshopper3”.
The connector for the preview camera is always an USB
2.0 B-Type Receptacle.
|
USB controller labels;
summer 2016 |
|||
|
Unit |
SCAN |
|
DESK |
|
RGB BF illumination |
LBF-1 |
LBG-1 |
LBO-1 |
|
X-Motor |
STF-1 |
STG-1 |
STO-1 |
|
Y-Motor |
STF-2 |
STG-2 |
STO-2 |
|
Z-Motor |
STF-3 |
STG-3 |
STO-3 |
|
DC control |
DCF-1 |
DCG-1 |
DCL-1 |
|
Objective changer |
DOF-1 |
DOG-1 |
---- |
|
Preview illumination |
BGF-1 |
BGG-1 |
BGO-1 |
|
Barcode illumination |
|
|
BGL-O |
|
RGB BF trigger |
LTF-1 |
LTG-1 |
LTO-1 |
|
Tray Loader motor |
---- |
STG-5 |
---- |
|
Slide loader motor |
---- |
STG-6 |
---- |
The trigger cable LTO-2 is used during only BF scan
procedures (DESK; MIDI_BF, SCAN_BF) with the camera “Grasshopper3”.
The trigger cable LTO-3 is used during BF and FL scan
procedures with the camera “Grasshopper3” (SCAN,
The trigger cable LTO-4 is used during BF and FL scan
procedures with the camera “PCO.edge” (SCAN,
The USB controller receives the command for the units from the program
SlideScanner.exe (the scan program) or the SlideScannerService.exe (the service program) via the USB
control port of the PC and the USB cable.
All units that contain separate
electronics (stepper motors and DC-controller) are connected via a bus system.
To differentiate the units, connected to the USB controller, each stepper motor
electronics and the DC-controller as well has an address. Each data transfer
starts with the specified address for the unit and is listen by all units at
the same time, but only this unit receives the message, which internal address
and the message address is identical. The stepper electronics can receive
commands (number of steps to go and direction) and can send status information
(desired position reached and the status of the sensors Home1 and Home2). The status information will be send via the
USB cable to the software, hereby the address of the unit is used also.
With this solution it is
possible to change the stepper motor cable with another stepper motor cable
(e.g. for fault detection) without any risk or functional restrictions. The
label of the cable for digital electronics has no reason in functionality; it
differentiates the cables from each other instead, because some cables are
shorter than others.
Important
The
construction of the controller powering on the board and the power supply does
allow the drive of maximal 2 stepper motors at the same time!
· Please
take this into account, if you are working with the service program and the
batch test program module!
Scanner cabling
and power supply
USB- and DC-electronics box mounting
To allow an easy exchange of the USB controller box, the inner (not
reachable) standoffs have a slot, in which the unit is shifted in; during the
rear (reachable with the
screw driver) standoffs are fixing the USB- or DC-controller box by using a
bolt.
The trigger connector is used to allow hardware
triggering of the scan camera and the FL illumination unit. Momentarily the
camera Grasshopper 3, PCO.edge and the Lumencor SPECTRA light engine is
controlled via this output.
·
If the camera is not recognized
after changing the USB controller unit, please check the correct cabling and
the connections as shown on the right.
USB B-type to
A-type receptacle
The adapter realizes the
connection of the internal A-type plug of the preview camera cable to the USB
B-type plug of the USB cable from the computer.
· “How
to check the preview camera”
|
Address of scanner unit |
||
|
Unit |
Address |
Type |
|
X-Y-Z
control |
00 |
C_P |
|
USB-controller |
01 |
All |
|
DC-controller |
02 |
P_S_M_D |
|
X-motor |
03 |
S_M_D |
|
Y-motor |
04 |
S_M_D |
|
Z-motor |
05 |
S_M_D |
|
Turret
unit |
06 |
S_M_P |
|
Tray
loader motor |
07 |
M_C |
|
Slide
loader motor |
08 |
M_C |
|
Objective
changer |
09 |
C_P_S_M |
|
Camera
changer |
10 |
P |
|
RGB
illumination |
11 |
C_SMD_II |
|
Reserve |
12 |
--- |
|
Immersion
liquid unit |
13 |
C |
|
Mechanical
shutter |
14 |
C |
|
Switch
board |
15 |
C_P |
|
Legend:
C=Confocal; P=P250; S=SCAN; M= |
||
The addresses are used by the scan program and the service program to
select the unit; these addresses are programmed into the specified unit and can
be changed via special software only. It is important, that none of these
addresses should exist twice inside of one Pannoramic scanner, otherwise
command or status mismatch occurs.
If data transfer is in progress, all addressable units listen to the
address of the data stream. if the address of the unit is identical with the
address of the data stream, the addressed unit is found and this receives the
information.
“Cabling of addressable
units”
Address assigning tool Serial.exe and start “Serial.exe”
The EEPROM stores
the scanner specific parameters and these are collected in the files
MicroscopeConfiguration.ini and MicroscopeSettings.ini. To ensure an always
proper functioning of the scanner, the content of the EEPROM should be updated
after adjustments are done or units are exchanged and parameter values are
modified. The EEPROM is a part of the USB controllers PCB.
·
To update the content, the EEPROM should be cleared
with the service program.
·
If the scan software is started and the EEPROM is
empty, the content of the appropriate *.ini files will be written automatically
from the HDD into the EEPROM.
1. Start the program
“SlideScannerService.exe”, option “EEPROM clear”.
2. Answer the
dialogue with “Yes”; then the EEPROM is cleared.
3. Exit the service
program with “Exit”
4. Start the program
“SlideScanner.exe”; the *.ini-files will be automatically saved from the
appropriate HDD folder into the EEPROM during startup of the scan program, if
the EEPROM is empty.
“Service program”; clear
EEPROM
Compressed content of the EEPROM (P250, SCAN,
The compression of the EEPROM content is required since the software
version 1.16, because there are newly implemented parameters and the capacity
of the EEPROM is limited to be 2kB.
· By compressing the
content, memory space is freed up.
In systems, delivered with the version 1.16 the modified handling of the
EEPROM content will not be noticed by the user; the files
“MicroscopeConfiguration.ini” and “MicroscopeSettings.ini” staying on the HDD
in uncompressed form.
· If the EEPROM
content is written, the files “MicroscopeConfiguration.ini” and
“MicroscopeSettings.ini” will be compressed before these are stored in the
EEPROM.
· If the EEPROM is
read, the content will be uncompressed before it is stored as file
“MicroscopeConfiguration.ini” and “MicroscopeSettings.ini” on the HDD.
If an upgrade is made (from the version 1.15 or lower to the version
1.16) the content in the EEPROM is uncompressed but the version 1.16 expects a
compressed content; therefore:
Before you are installing the software version 1.16
· Make sure; the
content of the files “MicroscopeConfiguration.ini” and “MicroscopeSettings.ini”
is the most recent content on the HDD.
· Save these files
to a save place
Install the software version 1.16
· Start the program
“SlideScanner.exe” first time.
· The compression of
the EEPROM content will be done automatically.
All the addressable units are connected with the “Hirschmann” connector;
the connection is secured with a knurled nut. On the other end of the cable a
“wire to board” connector is used.
Attention
Please switch off the power supply before cable connecting or
disconnecting.
The internal construction of the DC-controllers is different to each
other; the number of the connected cables is limited or extended in according
to the requirements.
The DC-controller switches the DC-motors and the preview illumination on
or off; collects the status information of the connected sensors and transmits
this to the USB-controller.
DC-motor implementation
The DC electronics box is
mounted onto the magazine unit from beneath. To prevent the DC-motors from
overload if hardware jamming occurs, all commands, starting the DC motors have
a time out (started by the scan software). Normally, the motor is stopped with
the sensor action before the time is run out. If the sensor action is missed
(jamming occurred) the time out event will switch off the motor.
Detailed
information about stepper motors:
About
basics, theory and principles please refer to:
http://www.solarbotics.net/library/pdflib/pdf/motorbas.pdf
Stepper
motor basics (stored)
Drive
circuit basics (stored)
Stepper
motor and driver (stored)
External recirculation diodes (stored)
Stepper motor driving (stored)
Stepper
motors 2011 (stored)
RGB
BF illumination unit
Modifications since summer 2016
By using a monochrome scan camera for brightfield scan sessions also,
the FL scan camera as well as the camera changer unit can be left out of the
equipment, because the same camera can be used for BF and FL scan sessions.
On the other side, to create color information for the BF scanned
tissue, the tissue needs to be captured 3 times; each image is illuminated with
another color.
To do this, an RGB illumination unit is required.
By triggering the illumination unit with the shutter of the camera, a
Red, a Green and a Blue illuminated image of the Field of View will be created.
Each image contains the grey scale of the used wavelength (range); so the
partial intensity of the appropriate color is known. By assembling the three images to a Field of
View and using the software coloring method (combining the intensity of gray
from each taken image for each pixel), the true color information of each pixel
is found.
By using cameras with a large image sensor, low shutter time and high
pixel resolution, the scan time of the tissue can be held in acceptable
boundaries and the result is an image with high resolution and high color
fidelity.
|
Connections
of RGB BF illumination |
||
|
Number |
Name |
Label |
|
1 |
LED for
Blue light |
|
|
2 |
LED for
Green light |
|
|
3 |
LED for
Red light |
|
|
4 |
Camera
trigger |
LTF-1 |
|
5 |
Reserve |
|
|
6 |
Reserve |
|
|
7 |
Bus
connector |
LBF-1 |
|
8 |
Reserve |
|
|
|
||
· Please
connect the appropriate cable to the corresponding connector!
5W
HI-POWER LED White Data Sheet
Power: 5W
Forward Voltage: 3.8V (4.3V max peak)
Current: 1400mA (1500mA max peak)
·
Driving LED without heat sinking device is forbidden.
· It is strongly recommended
that the temperature of lead be not higher than 55ºC.
“Power LED module”
and “Brightfield
RGB illumination unit”
Background (preview) illumination
The preview
illumination consists of 6 LEDs and is used to illuminate the scan area part of
the slide and makes so the sample visible for the preview camera.
The preview illumination exists in two versions, a 0R and a 300R
version.
Because the output of the preview illumination for the SCAN is driven by
a voltage generator, the 300R version is used in the SCAN.
The version of the preview illumination is shown with 0R or 300R, near
to the connector.
Important
If the 0R version is connected to the SCAN, the output BGF-1 may be
destroyed and the DC-controller needs to be replaced.
LED Wikipedia
The barcode illumination consists of four LEDs and is used to illuminate
the barcode area of the slide and makes so the barcode visible for the preview
camera.
The barcode illumination exists in two versions, a 0R and a 510R
version. Because the output for the barcode illumination for the SCAN is driven
by a voltage generator, the 510R version is used in the SCAN. The version of
the barcode illumination is shown with 0R or 510R, near to the connector.
Important
If the 0R version is connected to the SCAN, the output BGF-1 may be
destroyed and the USB-controller needs to be replaced.
To adjust the barcode illumination, please refer to “Preview_S_M_D” and
“Adjust the barcode
illumination”.
LED Wikipedia
If
the optical sensor OPF-1 and 2 (left and right magazine sensor) is pushed by
the magazine, the light path between LED and photo transistor will be
interrupted by a pin. This action is recognized by the software.
The sensors are situated on the magazine feeder channel bottom plate and
their positions are fixed.
· The sensors do not
need adjustment.
· The sensors should
be kept clean. Because the action path is very short, even small glass shards
or dust is able to prevent the sensor from correct switching.
LED and photo
transistor Wikipedia
Optical
interrupter H22LOI Data sheet; stored
“Magazine Input Sensor” and “Magazine Output Sensor”
“How to exchange sensors
OPX_1_2”
The “Magazine Loader
Sensor”, the “Magazine
feeder sensor”, the “Tray loader
sensor”, the “Slide
sensor” and the “Door sensor”
are realized with Hall elements.
- If the south pole of a magnet is over the Hall element or the north
pole on the opposite side, the switch is closed and this state is
recognized by the software.
- If the polarity of the permanent magnet is inverted or a magnetic
field is not present, no action occurs.
- The sensors are so implemented, that the south pole of the
permanent magnet stays over the sensor surface if the action position is
reached.
· The sensor
position is adjustable.
· For adjustment procedures see
the appropriate chapters.
· The sensor does
not need maintenance.
“Hall effect” Wikipedia
TLE4905L Data sheet; stored
USB- and DC-controller
cabling; summary
Cable labels
The first 2
letters of the cable label shows the dedicated unit, the 3rd character
defines the electronics version and the scanner type.
Unit
The first 2 letters are defining the unit to be connected.
Type
The type defines mainly the scanner and the electronics version while
delivering the scanner (since 2010). Previously delivered scanners (S_M_D) had
always the letter “C”
Serial
The number “Serial” defines the dedicated unit of the scanner. Often the
unit exists more times (like stepper motors) so the units from the same type
are distinguished. The serial number of stepper motor labels defines mainly
different cable lengths instead of different signals!
Example
The label “STF-
“Cabling of addressable
units” and “Addresses”
|
USB-controller
cabling; summary |
Cable
label |
|||
|
Unit |
Address |
DESK_II |
MIDI_II |
SCAN_II |
|
Reserve |
00 |
|
|
|
|
USB-controller |
01 |
USB
control cable from PC |
||
|
DC-controller |
02 |
DCI-1 |
DCG-1 |
DCF-1 |
|
X-motor |
03 |
STI-1 |
STG-1 |
STF-1 |
|
Y-motor |
04 |
STI-2 |
STG-2 |
STF-2 |
|
Z-motor; focus |
05 |
STI-3 |
STG-3 |
STF-3 |
|
Turret unit |
06 |
- |
STG-4 |
STF-4 |
|
Tray loader motor |
07 |
- |
STG-5 |
- |
|
Slide loader motor |
08 |
- |
STG-6 |
- |
|
Objective changer |
09 |
- |
STG-3 |
|
|
Brightfield illumination |
11 |
LBI-1 |
LBG-1 |
LBF-1 |
|
Barcode illumination |
02x |
|
|
|
|
USB connector; external |
- |
Preview
camera cable to PC |
||
|
USB connector; internal |
- |
FWI-1 |
FWG-1 |
FWF-1 |
|
DC-controller
cabling; summary |
Cable
label |
||
|
DESK_II |
MIDI_II |
SCAN_II |
|
|
USB-controller |
DCI-1 |
DCG-1 |
DCF-1 |
|
Door
switch (Sensor) |
HAI-1 |
- |
- |
|
Preview (background)
illumination |
BGI-2 |
BGG-2 |
BGF-1 |
|
Barcode
illumination |
BGI-1 |
BGG-1 |
- |
|
Slide
sensor |
- |
HAG-1 |
- |
|
Tray
sensor |
- |
HAG-2 |
- |
|
Left (input)
magazine sensor |
- |
- |
OPF-1 |
|
Right (input)
magazine sensor |
- |
- |
OPF-2 |
|
Magazine
loader sensor |
- |
- |
HAF-1 |
|
Magazine
feeder sensor |
- |
- |
HAF-2 |
|
Slide
loader cable |
- |
- |
HMF-1 |
|
Magazine
loader motor |
- |
- |
DMF-1 |
|
Magazine
feeder motor |
- |
- |
DMF-2 |
|
Slide
loader DC motor |
- |
- |
DMF-3 |