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ISG1200 12MHz DDS PROGRAMMABLE* FUNCTION GENERATOR (Direct Digital Synthesis) USER MANUAL * RS232 or USB standard Interface Ethernet option INSTRUMENTS ET SYSTEMES ZI des Radars, 12 rue Diderot F-91350 GRIGNY Tel. : 33 (1) 69 02 31 56 Fax. : 33 (1) 69 02 08 93 www.instruments-systemes.fr ISG1200 07/06 2 ISG1200 Technical specifications.......................................... Safety...................................................................... Warranty................................................................ Maintenance........................................................... Operation.................................................................. Using........................................................................ Front panel design........................................ Rear panel design........................................ Symbols used.............................................. Changing a fuse........................................... Front panel Description……....................... Rear panel Description............................... Selecting signal function …......................... Frequency adjustment................................... Modulation adjustment................................. Pulse width adjustment................................. Amplitude adjustment................................... Offset voltage adjustment.............................. Output signal Activation............................... Save and recall setup.................................... Main menu ....................................................….. Menu Contrast………..…............................ Menu Output Limit........................................ Menu setup………………........................... Menu Calibration.....................................…. Menu Interface............................................. RS232 Interface.......................................... USB Interface………................................... Ethernet Interface………............................. Menu About................................................. Remote control..........................................… RS232 connection......................................... USB connection…........................................ Ethernet connection...................................... Table of commands .................................…. 4 6 6 6 7 7 7 8 9 9 9 10 10 11 11 13 13 14 14 15 16 16 16 17 17 17 17 18 18 18 19 19 19 19 20 3 ISG1200 Specifications (18°C - 28°C) Frequency /Period : Range : 2mHz to 12MHz / 500s to 83ns Accuracy : 2mHz min. / 500s max. Display : 5 digits Precision : 50ppm typ. Function : Sinus : 2mHz to 12MHz Distorsion <0.1% (10mHz to 20kHz) <1% (20kHz to 12MHz) Square : 2mHz to 12MHz Rise/Fall time < 15ns Pulse : Variable pulse width from 100ns to 9s Independently of the frequency Triangle : 2mHz to 100kHz Linearity <1% (2mHz to 100kHz) Ramp : 200mHz to 100kHz Linearity <1% (2mHz to 100kHz) Sweep : Internal : Linear or Logarithmic Speed : 20ms to 20s Frequency range : 200mHz to 12MHz Trigger output : on BNC External : BNC Input. 10kΩ typ. Modulation (interne or externe): AM : 0 to 100% (BP : DC to 20kHz) Internal : 500Hz sinus External : 1Veff to 100% FM : 100Hz to 5MHz (BP : DC to 5kHz) FSK : 100Hz to 5MHz (BP : DC to 100 kHz) PSK : 0 to 360° (BP : DC to 100 kHz) 4 ISG1200 Output : Impedance : 50Ω Output Level : 10V max. crest to crest into 50Ω. 20V max. crest to crest (open circuit load) Attenuation : Variable from 0 to -60dB, Offset : ±10V open circuit load, ± 5V into 50Ω Offset level independent of the output level. Limit (by menu) for output level : signal + offset TTL output: 0-5V Rise /fall time <10ns Counter : 100mHz to 100MHz ±1digit 5 digits display, BNC Input (1MΩ/22pF) Protections : overload ±60V and short-circuits for all Input/Output. Display : LCD White-Blue 2x 16 characters with Backlight Interfaces : RS232 (3 wires). Xon-Xoff Protocol Transmission rate from 1200 to 19200 Baud USB Interface B type All functions and ranges programmable Security : CEI 1010-1 Class 1 Cat II 600V, Pollution Degree 2. Power supply : 230 V ± 10 % 50-60Hz, max. 40VA max. Fuse : Incorporated in main plug 5x 20 mm T315mA/250V Using Temperature : 10-40 °C humidity < 80 % Dimensions : 240 x240 x 88 mm (L x l x P) Weight : about 2,5kg AC04Option : Ethernet Interface (manufacturer assembly) Misc.: All functions and parameters adjust by keys and encoder via the menu. Rugged PVC Case with Handle Supply with power cord, RS232 and USB cable 5 ISG1200 Safety INSTRUMENTS et SYSTEMES certifies that this instrument has left the factory in perfect working order, both in operation and safety. This instrument has been designed and manufactured with great care to bring the best possible safety to the user. If the instrument no longer functions properly or is damaged, it must be immediately disconnected from the ac supply voltage, from the measured circuit voltages and returned for repair. Opening, maintenance, repair and calibration must be carried out by qualified and approved personnel. Warranty Provided it is used under the recommended conditions, this instrument is guaranteed for a two year period against manufacturing defects and component failure. This warranty applies to material and workmanship. The instrument must be shipped back to an agreed repair center. It will be repaired or replaced without charge. Warranty repairs are made at the discretion of IES. Maintenance Your function generator does not need any specific maintenance. Whenever cleaning is necessary, use a soft material. Avoid water or liquids that may penetrate inside. Operation Carefully unpack the instrument and make sure that it was not damaged during transportation. Insert the power cord on the rear of the instrument and connect to the ac supply. Switch power on by means of the power switch located on the rear panel. 6 ISG1200 7 ISG1200 8 ISG1200 Symbols used Indicates the possibility of a dangerous voltage Refer to the user manual Changing a fuse Before you change a fuse, disconnect the instrument from all possible dangerous voltage! The defective fuse must be replaced using a fuse of the same type and value : 100 mA time delay fuse on the ac power mains input (T 100 mA) Front Panel Description The ISG1200 Function generator had 4inputs /outputs BNC: one BNC for Main Output (50impedance). one BNC for Trigger output TTL level. one BNC for Trigger/Modulation input. one BNC for Counter Input. Function keys permits to select output signal parameters (Frequency, signal type, modulation, level, offset) and to activate output ON/OFF. The x10, 10 keys and the rotating encoder modify directly the display value (ex : frequency, level etc.) The 6 keys under the LDC display had the following functions: The 3 keys directly under the display select the corresponding parameter on the display. MENU keys display main menu. STORE/RECALL keys display setup menu. COUNTER key switches the instrument to counter mode. MENU, STORE/RECALL, COUNTER and OUTPUT keys are always active whatever is the function selected. 9 ISG1200 Rear panel Description The rear panel of the ISG1200 includes: Plug with incorporated fuse for Main supply Main Switch ON/OFF USB connector type B RS232 connector (3wires) Ethernet connector (option) 10Mbps Select the signal main function Select the signal function by press the FUNCT key. The following menu appears : SINUS OK Use the keys under the symbols and to choose the function. When the desired function is displayed, press « OK » key to validate, the menu is automatically display off. To quit the menu without select a choice, you must press another time the FUNCT key or another function key. The available signals are: SINE, TRIANGLE, SQUARE, RAMP + (positive), RAMP – (negative), PULSE, DC, LOGIQUE LEVEL. In SINE, TRIANGLE, SQUARE, RAMP + or RAMP – function, it’s possible to adjust frequency, level output and offset. In IMPULSION function, it’s possible to adjust the pulse width independently of the frequency with the DUTY key (see below). In DC function, to change the level press OFFSET key and turn the rotating encoder. In LOGIC LEVEL, the output signal is square and always refers to 0 volt. It’s possible to change the level from -10V to 10V. 10 ISG1200 Frequency adjustment To adjust the output frequency, press FREQ key. The menu below is displayed: Freq : 1000.0Hz OK The cursor indicates the active number which can change value with the rotating encoder. To change active number, it is necessary to move the cursor under the number with the keys under the symbols and . To modify the frequency quickly, it is also possible to use the keys x10, 10 to directly multiply or divide it by 10. When the desired frequency is displayed, it is necessary to press on the OK key to validate, the menu is automatically display off. To quit the menu without select a choice, you must press another time the FREQ key or another function key. Pressing on FREQ key again, the display will switch in displayed mode of the period. To come back in frequency displayed mode, press FREQ key once again. Modulation adjustment To select the modulation mode, press MOD key. The menu below is displayed: Modulation : AM ON CHOICE The available modulations are AM, FM, FSK, PSK, SWEEP et TTL. To scroll the modulations, press , adjustment of the specific parameters to each modulation is done by pressing CHOICE key and key then press OK to validate. To activate the modulation, press ON key, the menu below is displayed : Modulation : AM OFF 11 ISG1200 When the menu is displayed, all functions are disabled, it is only possible to disable the modulation by pressing OFF key, come back on the base screen pressing MOD. To quit the menu without select a choice, you must press another time the MOD key or another function key. Modulation parameters AM Modulation : Modulation depth from 0% to 100% Source : Internal : 500Hz sine External : the modulation depth is given by the amplitude of the modulation signal from 0 to 1Veff corresponding to 0 to 100%. FM Modulation: Excursion : 100HZ, 300Hz, 1kHz, 3kHz, 10kHz, 30kHz, 100kHz, 300kHz et 1MHz. Source : Internal or External FSK Modulation: Frequency : Choice of the modulated frequency (Frequency2). Source : Internal or External PSK Modulation: Phase : Choice of the Phase angle from 0 to 360° (resolution 0,1°). Source : Internal or External Sweep : Start Frequency End Frequency Duration Sweep LIN or LOG Source : Internal or External (trigger) TTL Modulation: Only active in SINUS, TRIANGLE, SQUARE and LOGICAL LEVEL Source : External only 12 ISG1200 Pulse Width Adjustment The pulse width adjustment is done by pressing DUTY key. The menu below is displayed: Width : 0,1µs Choice The cursor indicates the active number which can change value with the rotating encoder. To change active number, it is necessary to move the cursor under the number with the keys under the symbols and . To modify the pulse width quickly, it is also possible to use the keys x10, 10 to directly multiply or divide it by 10. When the desired pulse width is displayed, it is necessary to press on the OK key to validate, the menu is automatically display off. To quit the menu without select a choice, you must press another time the DUTY key or another function key. The pulse width can change from 100ns to 9,99s, but is always limited to a maximum of 90% of the signal period. Example, for a signal of 1kHz (period=1ms), the pulse width can change from 100ns to 900µs. Amplitude adjustment To adjust the amplitude, press LEVEL key. The menu below is displayed: Ampl : 10,0V OK The cursor indicates the active number which can change value with the rotating encoder. To change active number, it is necessary to move the cursor under the number with the keys under the symbols and . To modify the amplitude quickly, it is also possible to use the keys x10, 10 to directly multiply it or divide it by 10. When the desired width of impulse is displayed, it is necessary to press on the OK key to validate, the menu is automatically display off. To quit the menu without select a choice, you must press another time the LEVEL key or another function key. 13 ISG1200 Offset voltage (DC) adjustment To adjust the offset voltage, press the OFFSET key. The menu below is displayed: Offset : +0,0V OK The cursor indicates the active number which can change value with the rotating encoder. To change active number, it is necessary to move the cursor under the number with the keys under the symbols and . To modify the amplitude quickly, it is also possible to use the keys x10, 10 to directly multiply or divide it by 10. When the desired width of impulse is displayed, it is necessary to press on the OK key to validate, the menu is automatically display off. To quit the menu without select a choice, you must press another time the LEVEL key or another function key. If the offset voltage isn’t NUL, the Offset LED is lighted. The Offset LED indicates the presence of a DC component on the output signal. Important : The offset voltage is completely independent of the output signal. Output signal Activation The output signal is commutated by a relay which is activated while pressing OUTPUT key. If the red LED is lighted, the output signal is present on the BNC 50 Ω output. If the red LED is not lit, the signal isn’t present on the BNC. Important : All inputs and outputs are protected from overload and short circuit until ±60V. 14 ISG1200 Save and recall Setup This function permits to save and recall 10 setup of the front panel of the instrument. The STORE/RECALL key displayed the setup menu of the instrument : Setup : save OK To scroll the choice press , the display commutates between save and recall. The saved is done pressing OK key to validate, the menu below is displayed: Rappel : 0 OK + The recall number is incremented or decremented with « - » key and « + » key, then press on OK to validate. In saved mode, it is the active setup which is saved. In Recall mode, the instrument sets up with the parameters of the selected setup. The setup saved « 0 » is the start setup of the instrument. It is also possible to come back in factory mode, see paragraph on the main MENU. 15 ISG1200 MAIN MENU The MAIN menu is accessible pressing MENU key, the menu below is displayed : Esc Contrast OK To select a menu : Contrast, Limit output, setup, calibrate, Interface and About » press key until you reach the desired menu then press OK. menu Contrast The menu below is displayed : - Adjust OK + The contrast is done pressing « - » and « + » keys, then press OK key to validate. menu Output Limit This function permits to limit the output signal level, in order to protect the external circuit. The menu below is displayed : ON Limit OFF Adjust Pressing Adjust key, the menu below is displayed : Limit : 6.6V OK The tension limit is adjusted with the rotating encoder, then press OK key to validate. Important : The output limit (one adjustment) is the same value for the amplitude of output signal and for the offset voltage. When the limitation is active, the symbol "lim" is lit when you want to adjust the amplitude of the output signal or the offset voltage. 16 ISG1200 Menu SETUP The menu below is displayed : Manufacturer Setup? YES NO Pressing YES, the instrument comes back to the initial setup : 1000.0Hz 10.0V SINE +0.0V Sub Menu Calibration This menu is only accessible by one approved technician and within the framework of a calibration machines. Menu Interface The menu below is displayed : Esc RS232 OK To scroll the interface (RS232, USB, Ethernet), press key, then OK to validate. Menu RS232 Interface Baud rate Selection : to select the baud rate, press the key choice. The following menu is displayed : Baud rate: 1200 Esc OK The Baud Rate available are 1200, 2400, 4800, 9600, 19200 bauds. To scroll the speed, press , key, then OK to validate. 17 ISG1200 The menu below is displayed : Esc RS232 choice ON The interface activation is done by pressing ON key. Pressing Esc key, you come back on the previous menu without any changes. Menu USB Interface The menu below is displayed : USB Esc ON The interface activation is done by pressing ON key. Pressing Esc key, you come back on the previous menu without any changes. The baud rate is 19200 Bauds. Menu Ethernet Interface The menu below is displayed : Ethernet Esc ON The interface activation is done by pressing ON key. Pressing Esc key, you come back on the previous menu without any changes. If the interface isn’t on the instrument (OPTION), the display is : NO Interface OK Menu About Indicates the type of the instrument, the version, the software and the interface used and the Baud Rate. You quit the menu by pressing OK key. ISG1200 1.02 RS232 9600 OK 18 ISG1200 Remote control RS232 Connection: When it is connected to a computer, your generator ISG1200 uses a protocol of software dialogue rather (Xon - Xoff) than a control of material flow. Connection can thus be carried out with simplest by a cord with three wire (Rxd, Txd and mass signal). The connecting cable can be terminated at one end with a 9 pin connector and at the other end with a 9 pin or 25 pins connector, this depends on the PC serial port connector. The following connections should be followed: It is better to use the cord provided with the instrument. 25 pin female connector (PC) 9 pin female connector (PC) 9 pin male connector (instrument) 2 3 7 3 2 5 3 2 5 USB Connection: To connect your generator ISG1200 to a computer, use the cord provided with the instrument (type A-type B), there is 2 possibilities. When the instrument is connected Windows ask for the drivers installation. -To install the USB drivers : , insert the CD provided in the CDROM ( ex : D :/ ). Follow the instructions of windows and indicates the following repertory : D:\Driver USB\ D10620 \ -To install a Virtual Com Port (VCP) to use the instrument with different software as the hyperterminal of Windows. For this, follow the instructions of Windows’s installation. Insert the CD provided in the CDROM ( ex : D :/ ). Follow the windows instructions and indicates the following repertory: D:\Driver USB\R9052154\ Once, the isntallation is complete, the instrument is ready to be control from the computer. Ethernet Connection: (OPTION) Use a RJ45 cord to connect the instrument to the network. Install the provided driver with the interface to set up the address of the ISG1200 19 ISG1200 ISG1200 Command List Function Signal Parameters Modulations Modulations Parameters 20 SIG :SIN SIG :TRI SIG :SQR SIG :RMP SIG :RMN SIG :IMP SIG :DC SIG :LOG CNT :ON CNT:OFF AMP :1.3 OFF :-2,5 FRQ :123E3 WDT :50E-3 MOD :OFF MOD :AMI MOD :AMX MOD :FMI MOD :FMX MOD :FSKI MOD :FSKX MOD :PSKI MOD :PSKO MOD :SWPI MOD :SWPX MOD : GATE AM:75 FM:100 FM:300 FM:1K FM:3K FM:10K FM:30K FM:100K FM:300K FM:1M STT:xxx STP:xxx TIM:100e-3 SWP :LIN SWP:LOG FSK:xxx PSK:125.3 Sine Triangle Square Positive Ramp Negative Ramp Impulsion Continue voltage Logical level Counter in use Counter off use Output Amplitude in Volt : 1,3V Offset voltage in volts (-2,5V) Frequency in Hz (123kHz) ISG1200 : impulsion width in s (50ms) Modulation unused (all modulations) internal AM Modulation external AM Modulation internal FM Modulation external FM Modulation internal FSK Modulation external FSK Modulation internal PSK Modulation external PSK Modulation internal Sweep external Sweep gate Modulation Modulation depth in % (75%) FM Excursion 100Hz FM Excursion 300Hz FM Excursion 1kHz FM Excursion 3kHz FM Excursion 10kHz FM Excursion 30kHz FM Excursion 100kHz FM Excursion 300kHz FM Excursion 1MHz Start Frequency End Frequency Sweep time in second (100ms) Linear Sweep Logarithmic sweep Secondary frequency in modulation FSK Phase angle in degres for modulation PSK (125,3°) ISG1200 Output Limit Memory LIM:3.6 LIM:ON LIM:OFF STO:X RCL:X Output Limit 3.6 V Limit in use Limit off use Memory setup N°X (0 à 9) Recall setup N°X 21