TMR-01B Manual - NPI Electronic Instruments
Contents
1. UP TIME All analog electronic systems are sensitive to temperature changes Therefore all electronic instruments containing analog circuits should be used only in a warmed up condition 1 e after internal temperature has reached steady state values In most cases a warm up period of 20 30 minutes is sufficient HANDLING Please protect the device from moisture heat radiation and corrosive chemicals version 1 1 page 3 TMR 0O1B User Manual 2 TMR 01 B 2 1 System Description The TMR OIB was designed as an easy to use device for generating rectangular pulses of fixed amplitude The timer creates a periodic TTL output signal pattern where the initial delay number of cycles duration of pulse burst burst frequency can be adjusted by the user The timer can be used to create single events by setting the CYCLES unit to 001 cycles In all other cases CYCLES unit set to a number gt l or to it will create repetitive cyclic events There are two ways such a repetitive cycle can be performed e FRAME OFF The sequence start is followed by a defined delay then by a pulse and a pause After this initial sequence pulse and pause are repeated for as long as selected with the CYCLES unit see Figure 1 Duration of delay pulse and pause are selected individually by the respective digital potentiometers and range switches on the front panel e FRAME ON The sequence start is followed by a defined delay then by a pulse and2. a pause After this initial sequence delay pulse and pause are repeated for as long as selected with the CYCLES unit see Figure 1 Duration of delay and pulse are selected individually by the respective digital potentiometers and range switches on the front panel The pause duration is internally calculated as the remaining time of the total frame time minus delay and pulse time Therefore the PAUSE unit is without function in the FRAME ON mode 7o 7T a FRAME OFF START DELAY PULSE PAUSE CYCLES FRAME ON START DELAY PULSE PAUSE CYCLES Figure 1 Different modes for repetitive cyclic events The pulse in all modes of operation can be either a single pulse or a burst with an adjustable frequency The timer is capable of creating a burst with a certain length BURST TIMED or with a certain number of single pulses BURST COUNTED version 1 1 page 4 TMR O1B User Manual FRAME ON FRAME OFF DeLay purse pause belay puise pause DELAY PULSE PAUSE PULSE PAUSE START TTL INPUT TTL OUTPUT in SINGLE mode TTL OUTPUT in BURST mode MONITOR DELAY TIME MONITOR PULSE TIME MONITOR PAUSE TIME MONITOR BURST FREQUENCY Figure 2 TTL pattern as generated by the TMR O1B and put out at the described outputs The TMR can be started or stopped with pushbuttons or TTL signals In repetitive mode with a certain number of cycles selected the output sequence can be paused by
3. ESS of npi electronic D 71732 Tamm Germany 1 2 3 4 5 GENERAL This system is designed for use in scientific laboratories and must be operated by trained staff only General safety regulations for operating electrical devices should be followed AC MAINS CONNECTION While working with the npi systems always adhere to the appropriate safety measures for handling electronic devices Before using any device please read manuals and instructions carefully The device is to be operated only at 115 230 Volt 60 50 Hz AC Please check for appropriate line voltage before connecting any system to mains Always use a three wire line cord and a mains power plug with a protection contact connected to ground protective earth Before opening the cabinet unplug the instrument Unplug the instrument when replacing the fuse or changing line voltage Replace fuse only with an appropriate specified type STATIC ELECTRICITY Electronic equipment is sensitive to static discharges Some devices such as sensor inputs are equipped with very sensitive FET amplifiers which can be damaged by electrostatic charge and must therefore be handled with care Electrostatic discharge can be avoided by touching a grounded metal surface when changing or adjusting sensors Always turn power off when adding or removing modules connecting or disconnecting sensors headstages or other components from the instrument or 19 cabinet TEMPERATURE DRIFT WARM
4. Electronic Instruments for the Life Sciences pease wade OPERATING INSTRUCTIONS AND SYSTEM DESCRIPTION FOR THE TMR O1B DIGITAL TIMING UNIT VERSION 1 1 npi 2014 npi electronic GmbH Bauhofring 16 D 71732 Tamm Germany Phone 49 0 7141 9730230 Fax 49 0 7141 9730240 support npielectronic com http www npielectronic com TMR 0O1B User Manual Table of Contents kesat Recul saicick in dute Selaeace ei boiasealed ntti ncahteae nie bsuansienatnduoaheteaseinieetovanseiesndes 3 iy PaO MDS 26 sire Sec ecrscact aeee S E E ba aois ease deat uns na cei east E cece nus saceb east adhonmenaee 4 2 SSE DOSC D Oea a iuie poi ionaastaete tanh nas eateetae 4 22 Descripuomor the Front Panel assssaieudi cassie iaio a tat 6 2 5 WESChipuon OF the Rear Panel dct ssceesssenasiccsvandeenailesuaiedei Sadvenauenastine iu sadeetallequae di indvendsazetigest 9 De Lec meak DAL ere A E eee noe ecs dante T ote eae 9 version 1 1 page 2 TMR 0O1B User Manual 1 Safety Regulations VERY IMPORTANT Instruments and components supplied by npi electronic are NOT intended for clinical use or medical purposes e g for diagnosis or treatment of humans or for any other life supporting system npi electronic disclaims any warranties for such purpose Equipment supplied by npi electronic must be operated only by selected trained and adequately instructed personnel For details please consult the GENERAL TERMS OF DELIVERY AND CONDITIONS OF BUSIN
5. OWER LED This LED indicates that the timer is connected to the power supply and the switch on the rear panel is in ON position version 1 1 page 8 TMR 0O1B User Manual 2 3 Description of the Rear Panel npi electronic GmbH DE 71732 Tamm www npielectronic WC ON POWER SUPPLY 9V 12V DC 1A OFF Figure 4 rear panel view of TMR O1 B ON OFF switch This switch is for powering the timer 9 12 V DC 1A connector Use this connector to connect the provided power supply 3 Technical Data Input TTL 0 5 V impedance 10 kQ Output TTL 0 5 V impedance 50 Q Burst Frequency 2 200 Hz Timing error max 1 digit Power requirements 9 12 V DC 1 A min power supply provided Dimensions 305 x 180 x 105 mm W x Dx H version 1 1 page 9
6. e burst frequency as TTL signal The signal will be present in both BURST modes In SINGLE mode this output will be disabled This output can be used to tweek the burst frequency to a desired value using an oscilloscope 17 MONITOR DELAY TIME this output will be TTL HIGH during the DELAY time see Figure 2 18 RESET push button TTL input This button input stops the timing cycle and sets the cycles counter to zero in repetitive mode see 11 Note It is recommended to push the reset button every time the settings have been changed Otherwise the TMR O1B electronics might get stuck in an undefined state 19 STOP push button TTL input This button input allows the user to interupt a timing cycle In repetitive mode see 11 the cycle counter will not be reset to zero If the STOP button is pushed during a pulse the timer will start with the remaining time of this pulse after re start During the stop time the TTL monitor outputs will remain in the state they were in directly before the stop Only the TIMER OUT TTL will be shut of and go to a LOW output state to prevent damage from tissue or cells 20 START push button TTL input A timing cycle is started by pushing the START button giving TTL HIGH to the START TTL INPUT In repetitive mode see 11 the PULSE PAUSE cycle will be repeated for the number of cycles selected with 9 This button is also used to restart a stimulation cycle after a STOP see 11 21 P
7. er might end up in an undefined state Note for single events cycle counter set to 1 Due to internal runtimes of signals in the logic circuitry any settings of times shorter than 100 us might lead to wrong countings in the cycle counter 10 TIMER OUT TTL the timing pattern will be put out as TTL at this output 12 MONITOR PAUSE TIME this output will be TTL HIGH during the PAUSE time see Figure 2 13 PULSE MODE rotary switch SINGLE only a single pulse will be given during the PULSE period length set by pulse unit 5 6 BURST COUNTED during the PULSE period see Figure 2 a burst will be given to the output The number or pulses during this burst will be selected by PULSE decade switch 6 I e the time burst time depends on burst frequency and number of single pulses see Figure 2 For setting the number of burst only the first three digits will be active BURST TIMED during the PULSE period see Figure 2 a burst will be given to the output The duration of this burst will be selected by PULSE unit 5 6 Le the number of single pulses during a burst depends on burst frequency and burst duration see Figure 2 14 MONITOR PULSE TIME this output will be TTL HIGH during the PULSE time see Figure 2 15 BURST FREQUENCY potentiometer this potentiometer selects the frequency for a burst see 13 version 1 1 page 7 TMR O1B User Manual 16 MONITOR BURST FREQUENCY this output will provide th
8. on with digital decade switches 2 Activate FRAME functionality with 1 Note When FRAME is set OFF minimum DELAY setting must be 3 ms 3 4 DELAY unit Set DELAY duration with range switch 3 and digital decade switches 4 In case 3 is set to us only the first 3 digits will be considered 5 6 PULSE unit Set PULSE duration with range switch 5 and digital decade switches 6 in BURST COUNTED mode this switch selects the number of single pulses within a burst only first 3 digits In case 5 is set to us in SINGLE or BURST TIMED mode only the first 3 digits will be considered 7 8 PAUSE unit Set PAUSE duration with range switch 7 and digital decade switches 8 In case 7 is set to us only the first 3 digits will be considered Note Due to internal runtimes of signals in the logic circuitry any settings of times shorter than 10 us will be inacurate version 1 1 page 6 TMR 0O1B User Manual 9 11 CYCLES unit Set number of CYCLES PULSE PAUSE in repetitive mode 11 upper position Cycle counter will be not active in continuous mode o lower position Note If the number of cycles is selected as O the timer will perform one cycle and then stop To further operate the timer the RESET button has to be pushed Important Always make sure that the timer settings have correct values e g with FRAME mode on the sum of DELAY and PULSE time must not exceed the FRAME time Otherwise the tim
9. pushing stop It will continue at the cycle where it stopped unless the RESET button or TTL input is activated While the timer is stopped the TIMER OUTPUT 10 is TTL low The TTL outputs of DELAY PULSE and PAUSE can also be used to trigger START STOP or RESET of a second TMR O1 B unit This way it is possible to create sophisticated timing patterns Note For both BURST modes the continuously running internal BURST FREQUENCY generator is the source for the single bursts As a result in BURST COUNTED mode the time between two bursts might differ slightly from the time selected with the PAUSE or DELAY unit A burst will then start with the next complete single burst pulse In BURST TIMED mode the time between two bursts will always be exact the time selected with the PAUSE or DELAY unit but the burst might start with an incomplete shorter single burst pulse version 1 1 page 5 TMR 0O1B User Manual 2 2 Description of the Front Panel DOE 0o E P TMR 01B DIGITAL TIMING UNIT npl I 5 O us FRAME sec FRAME OM PULSE J DELAY T BURST TIMED me 2 BURST COUNTED SINGLE 1 Hz 200 Hz FRANE OFF BURST FREQUENCY PULSE MODE DE a PULSE Je KO li p id 0 lu 1 RESET MONITOR MONITOR MONITOR MONITOR TTL DELAY TIME BURST FREQUENCY PULSE TIME PAUSE TIME J E5 OO O D CGO 0O Figure 3 front panel view of TMR 01B 1 2 FRAME unit Set FRAME durati
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