User Manual - ILPhotonics.com
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1. CUD RPF6 FILTER WHEEL User Manual April 2005 Copyright 2005 DTA s r l All rights reserved The reproduction of any part of this manual is allowed only with the written authorization by DTA s r l The contents of this manual may be subject to changes without any warning DTA are not responsible for errors that may occur in this manual Revision 1 0 dated 28 04 2005 CONTENTS INTRODUCTION INSTALLATION OF HARDWARE AND SOFTWARE SOFTWARE OPERATION DETAIL OF THE RPF6 CONNECTOR FILTER WHEEL S SOFTWARE MANAGEMENT CONTROL DESCRIPTION SPECIFICATIONS OPTIONS INDEX 10 13 13 14 INTRODUCTION RPF6 is a motorized filter wheel which has six different holders for filters of 114 diameter It has been designed to be driven directly from ViSTA the DTA software that manages the cameras but it is also supplied with a separated control program for all Windows systems There are two different connection systems by means of RS232 or by means of the parallel port It is possible to set the rotation speed and a different stop position for each filter The motor hold current is user adjustable This product can be customized specifying different size number of filters input or output adapters The typical applications are Photometry Microscopy and colour sequences THE STANDARD SYSTEM INCLUDES e assembled unit in light alloy with threaded 31 75 input e RS232 Parallel interface e 2 5 m PC paralle2. 4800 no parity bit 8 characters plot 1 5 bit stop The following controls are available 1 F lt filter number gt lt CR gt 2 N lt filter number gt lt steps gt lt CR gt 3 R lt CR gt 4 E lt CR gt 5 WV lt velocity gt lt CR gt 6 Z lt CR gt 7 D lt duty_cicle gt lt CR gt 8 D lt CR gt 9 O lt offset gt lt CR gt CONTROL DESCRIPTION 1 F lt filter number gt lt CR gt Let suppose we want to set filter number 2 it will be enough to send a character F b character 2 c carriage return lt CR gt indicates carriage return whose ascii code is 13 After sending the control in case of not transmission errors the filter wheel will set the specified filter in our example filter number 2 and once the operation is concluded it will transmit us ACK lt CR gt Otherwise if there have been transmission errors no one operation will be implemented and it will transmit NACK lt CR gt 2 N lt filter number gt lt steps gt lt CR gt Let suppose we want to vary the steps number between filter 2 and filter 3 and increase them to 50 it is sufficient to transmit a character N b character 2 c a character whose ascii code is equivalent to the steps number in this case a character whose ascii code is 50 d carriage return 10 Even in this case in case of not transmission errors the filter wheel wi
3. RGB 6 31 7 mm RGB interference filter kit NIK 6 Adapter for Nikon lens MIN 6 Adapter for 42x1 mm lens ARH 6 Adapter for HiRes ARI 6 Adapter for DISCOVERY iCAM PAR 6 Standard parallel port link cable 13 INDEX D DETAIL OF RPF6 CONNECTOR F FILTER WHEEL S SOFTWARE MANAGEMENT I INTRODUCTION INSTALLATION OF HARDWARE AND SOFTWARE 0 OPTIONS S SPECIFICATIONS 14 10 13 13 OUD S r l Viale Campania 23 56021 Cascina Pisa ITALX web site www dta it e mail sales Q dta it
4. e alignment if there have not been transmission errors it wiil set filter number 0 and will transmit ACK lt CR gt In case of transmission errors it will transmit NACK lt CR gt 11 12 7 O lt offset gt lt CR gt With this control we can choose the initial offset by which the RPF will set itself as soon as we give it the zero setting control The syntax is clear and the wheel answer will be ACK lt CR gt and NACK lt CR gt 8 D lt duty cicle gt lt CR gt To change the duty cycle it is sufficient to send a character D b a character included within 0 and 3 0 void torque I minimum torque 2 medium torque 3 maximum torque c lt CR gt This point the wheel will answer ACK lt CR gt or NACK lt CR gt as in the other cases 9 D lt CR gt This control enables us to know the present duty cycle of the microcontroller The answer will be lt duty cicle gt ACK lt CR gt oppure NACK lt CR gt NOTE Between a character and the other it would be better to insert a waiting cycle of about 10 ms to enable the RPF microcontroller to process correctly the input data SPECIFICATIONS POSITIONING SPEED 0 2 s NUMBER OF POSITIONS 6 STANDARD MOUNT 1147 SPEED CONTROL Yes SERIAL INTERFACE RS232 9600 Baud PARALLEL INTERFACE 4 bit input 1 bit output MAXIMUM FILTER THICKNESS 8 mm BACKFOCUS 30 mm POWER SUPPLY 12V 500mA DIMENSIONS 140 mm OPTIONS
5. l link cable e managing software for Windows 95 98 ME e 230V power supply e case manual with test report and 24 months of warranty INSTALLATION OF HARDWARE AND SOFTWARE Hardware and software installation of this instrument is particularly simple and intuitive You must conform to the following steps 1 Insert the SDK CD provided with the filter wheel Y Copy the files RPF6 EXE and RPF6 INI in a directory 3 Connect the feeder to the instrument and to the PC serial port this operation must be performed before turning on the computer 4 Turn on the computer and start up Windows 5 Feed the instrument 6 Now the instrument is working and it selects the first filter automatically 7 Start the RPF6 EXE program Thanks to simple graphic interface it makes possible to e Show the serial or parallel port by which the filter wheel has been connected to the computer e Choose the angular velocity of the filter wheel e Attribute a name and colour to each filter e Calibrate the wheel e Select each filter SOFTWARE OPERATION When you activate RPF6 EXE it will appear the following window EJAPF 6 C DTA 97 OT EZ giallo AE me f ai ea sica ee De fig 1 If you select Port Setup from the Control menu it is possible to specify the input output port which the filter wheel is connected on Communication Setup Sa fig 2 Using Start from the Control menu RPF6 program verifies if the filter wheel co
6. ll transmit ACK lt CR gt Otherwise no one operation will be implemented and it will transmit NACK lt CR gt R lt CR gt This control enables us to know the present position of the filter wheel Let suppose that presently it is selected filter number 3 then if we transmit a character R b carriage return the filter wheel will transmit 3ACK lt CR gt if there have been no transmission errors and NACK lt CR gt if there are errors E lt CR gt This control enables us to know the firmware version Transmitting a character E b carriage return the filter wheel will answer lt 2 byte gt ACK lt CR gt For example if the firmware version is 1 0 we will receive IOACK lt CR gt Even in this case if there have been transmission errors the filter wheel will transmit NACK lt CR gt V lt velocity gt lt CR gt It is possible to change the wheel angular velocity by transmitting a character V b a character whose ascii code indicates the velocity velocity range gets from 220 for high angular velocity to 180 for low ones c carriage return The filter wheel will transmit ACK lt CR gt if there have been no transmission errors NACK lt CR gt on the contrary Z lt CR gt If we want to have a perfect alignment between the telescope axis and each filter axis it will be enough to transmit a character Z b carriage return The filter wheel will implement th
7. lost Calibration from the Control menu enables to specify the steps number between one filter and the other to select the offset and the torque motor Each step is equivalent to a 1 25 degrees rotation and there are 48 steps between a filter and the other On the contrary the offset enables to calibrate the alignment between the filter wheel axis on the instrument axis Varying the torque it is possible to choose the torque motor while it is not running If the filter wheel is not subject to particular vibrations or shoves you can choose the Min Torque or Zero Torque function Otherwise if the filter wheel is subject to vibrations it would be better to select the value MidTorque or Max Torque function Finally in order to control the angular velocity of the filter wheel it is sufficient to choose Speed from the Control menu and to vary the velocity using the proper buttons Speed control EG fig 6 DETAIL OF THE RPF6 CONNECTOR The filter wheel can be connected to the PC either by means of the serial interface or the parallel one Nevertheless using the serial interface you will obtain the better connection because it enables to use very long connection cables CONNECTOR S NUMERATION SIGNALS ON THE CONNECTOR po Parallel ic FILTER WHEEL S SOFTWARE MANAGEMENT It is possible to check the RPF6 filter wheel by programming the serial interface These are the statements to be respected bit rate
8. nnection is correct If so it will appear the following window which differs from fig 1 because now buttons 1 to 6 are enabled EJRPF 6 C DTA 97 Eifel ES Control Help PJ gialle Ssl e 3 gt ME verde scuro a gt I verde pastello BP azzo s gt IH so fig 3 Now it is possible to choose each filter by clicking with the mouse one of the six buttons or by pressing the function keys FI FO to select filters 1 6 respectively On the contrary if there are connection problems after few seconds it will appear on the screen the error message RPF Don t Send ACK ERROR x RPF Don t Send ACK fig 4 In this case you must press OK and verify that 1 The instrument is properly fed 2 The serial or parallel cable has been correctly connected 3 The input output port specified by the Port Setup control is the right one By means of the Filter Name control from the Control menu it is possible to associate a name and a colour to each filter selecting them between the possible ones on the colour palette Filles Name EI Filtert Sie DD Fiter 3 n Finer a I X Cancel fig 5 Once you have made these changes let s press OK If necessary the Autozero control from the Control menu enables the instrument to autocalibrate itself for example if the perfect alignment of the filter on telescope axis has been
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