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23

Communication Protocol

Communication parameters are set at 9600 baud, 8 bits, parity = none, and 1 stop bit. To help
establish RS232 communications, the pulse generator emits the characters

QC

approximately

every 200 ms after power up and until the 9412/9412A receives a

$

.

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Summary of Contents for 9412

Page 1: ...12A can be custom ized to fit your exact requirements contact Quantum Composers for details Technical Support For questions or comments about operating the 9412 9412A contact Quantum Composers via one...

Page 2: ...ent away from your heart in case of accidental contact with a high voltage You will significantly reduce the risk factor if you know and observe the follow ing safety precautions 1 Do not expose high...

Page 3: ...3 6 Never work alone Someone should always be nearby to render aid if necessary Training in CPR first aid is highly recommended...

Page 4: ...4...

Page 5: ...5 1 Item Button...

Page 6: ...hich displays menu selections and settings The left half of the display shows the current menu selection while the right half shows the current setting of the item associated with that menu Control Bu...

Page 7: ...ost digit is already selected for numeric items pressing and holding this button down displays the range and units for the current item Stop Button Disables output of pulses on all channels Run Button...

Page 8: ...The maximum voltage possible is 20 Volts into a high impedance load or 10 Volts into a 50 Ohm load Serial Port This is a 9 pin D sub connector for the RS232 interface that comes standard with the 9412...

Page 9: ...9...

Page 10: ...10 1...

Page 11: ...11 1...

Page 12: ...ey will toggle between menu items within the current set Hold down the Left arrow key to receive a short description of the current menu item Press ing and holding the Right arrow key will display the...

Page 13: ...en pressed External Trigger Mode In the External Trigger mode one pulse is output each time an active edge occurs on the Ext Gate input The external trigger polarity menu TRIG is used to determine whe...

Page 14: ...etting the GATE menu to Low or High Pulses will then only be generated while the external trigger input is active Selecting Low will make the gate active low while selecting High will make the gate ac...

Page 15: ...ch is set from the Tn Dly where n 1 or 2 When in any mode but External Trigger the Delay setting sets the delay from the time the in ternal timer To goes high until a pulse is output on a particular c...

Page 16: ...disable the output of Channel 2 independent of the other channels If set to On Channel 2 s output will be active under the same conditions as the other channels When set to Off Channel 2 s output will...

Page 17: ...s used to select the multiplier For example if the To period ToPer is set to 100 sec 10Hz setting T2 n to 2 will cause the channel 2 period to be 200 sec 5Hz Store Recall Misc Menus The 9412 9412A con...

Page 18: ...e instrument to the factory default settings Shot Counter The 9412 9412A includes a nine 9 digit shot counter The maximum count displayed is 4 294 967 295 after which the count rolls over to zero To m...

Page 19: ...19...

Page 20: ...20 1 5 4 3 2 1 9 8 7 6...

Page 21: ...4 DTR connected to pin 6 5 Ground 6 DSR connected to pin 4 7 RTS connected to pin 8 8 CTS connected to pin 7 9 No connection The voltage level of the Transmit signal is 10V the Receive signal should b...

Page 22: ...et the number of cycles CYCLES 100 The pulse generator will return the following Echo Enabled CYCLES 100 cr lf ok cr lf Echo Disabled ok cr lf Only one command will be processed per message Commands a...

Page 23: ...cation parameters are set at 9600 baud 8 bits parity none and 1 stop bit To help establish RS232 communications the pulse generator emits the characters QC approximately every 200 ms after power up an...

Page 24: ...24 Command List The following table summarizes all the commands Note The name of each command is identical to how it appears on the display of the 9412 9412A...

Page 25: ...th in microseconds for Channel 1 T1 Dly 0 99999999 s Sets the delay in microseconds for Channel 1 T1 Pol 0 Negative active low 1 Positive active high Sets the polarity of the output for Channel 1 T2 W...

Page 26: ...a configuration SHOTS 9412A Only 0 Reset to zero Resets shot counter SHOT will return the number of shots ECHO 0 Disable 1 Enable Enables Disables the RS232 echo The result string is always sent back...

Page 27: ...AY Ext Trig to To 100 ms EXTERNAL TRIG GATE P RATE Dc to 1 100 s largest delay period P THRESHOLD 3 VDc 3 mA into optoisolator P TRIGGER SLOPE Rising or falling edge P GATE Active low or active high P...

Page 28: ...e level P PEAK CURRENT 400 mA per channel P AVERAGE CURRENT 200 mA average total for all channels COMPUTER INTERFACE P RS232 9600 Baud All instrument functions and settings may be con trolled over the...

Page 29: ...move the two screws located on the sides of the 9412 9412A they hold the front plastic bezel in place and remove bezel 3 Remove the two screws located on the sides of the 9412 9412A they hold the back...

Page 30: ...30...

Page 31: ...31 1 CUSTOM FEATURES None...

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