FUNCTION GENERATOR 41-620 41-620 Function Generator ● DC to 10MHz ● Three Channels in One 3U Slot ● 48-bit Frequency Resolution ● Simple Generation of Repetitive Arbitrary Waveforms ● DC Offset Capability ● Flexible Sweep Capability ● Amplitude Modulation Capability ● Uses 10MHz PXI Clock or External Clock Reference ● Comprehensive Trigger Support ● VISA Driver Supplied The 41-620 is a compact 3 channel function generator provided in a PXI 3U single slot module. It is capable of generating sine waves to 10MHz with 48-bit frequency resolution referenced to the 10MHz PXI clock or to an external standard. The 41-620 can generate arbitrary waveforms loaded into the internal 256k memory, allowing The supplied soft front panel demonstrates the ability of the function generator to emulate many waveform types, the 41-620 to quickly generate common waveforms and the including the typical waveforms of automotive and aerospace ability to import external waveforms. The soft front panel also sensors. supports swept modes of operation. The function generator provides a very simple method of The 41-650 high voltage amplifier is perfect partner to providing variable output frequencies through the use of the 41-620, allowing the signal levels of the 41-620 to be Direct Digital Synthesis (DDS), making it far easier to use than boosted to 60Vpp. an ARB for repetitive waveform generation. The 41-620 is capable of generating fast swept frequency signals, permitting the output to emulate the operation of variable speed devices. Sweeps can be single shot events or continuous up and down ramps. The DDS technology ensures the 41-620 settling time is extremely fast, being limited only by the update time over the PXI bus. Each channel of the 41-620 can be amplitude modulated from a single AM input connector to allow independent time varying output levels to be reproduced. One channel of the module can be externally connected to provide the time varying level control independently of the waveform being generated. The waveforms of the function generators are each stored in independent 256k memory blocks, permitting each channel to provide a different waveform shape. Waveforms are easily created externally, using Excel or similar tools, and loaded to the module memory via the backplane. The 41-620 supports the PXI Trigger functions to allow triggered events from other instruments to initiate waveform generation or sweeps. Soft Front Panel for the 41-620 Function Generator PXI Switch & Instrumentation Pickering Interfaces www.pickeringtest.com ISSUE 9.3 AUG 2011 Typical Waveforms Generated by 41-620 With Output Attenuation Set to 10 dB and Loaded into 50Ω Triangular Waveform at Frequency of1MHz Triangular Waveform at Frequency of 3MHz Square Wave at Frequency of 3MHz Triangular Waveform at Frequency of 5MHz Square Wave at Frequency of 5MHz Swept Sine Wave from 1kHz to 10kHz in 10Hz Steps at 10µs Intervals PXI TRIGGERS TRIGGER EXTERNAL SELECT TRIG. I/P PXI CLOCK CLOCK EXTERNAL SELECT CLOCK I/P CLOCK ADDRESS TO OTHER 48-BIT DDS CLOCK TRIGGER CHANNELS GENERATOR DATA n DC AM I/P ÷2 OFFSET DAC 10-BIT WAVEFORM MEMORY OUTPUT DATA DRIVER DAC LPF 41-620 Function Generator Block Diagram Pickering Interfaces are sponsor members of the PXI Systems Alliance www.pxisa.org www.pickeringtest.com E-Mail sales@pickeringtest.com PXI BUS INTERFACE ADDR. Safety & CE Compliance Specification (each channel) All modules are fully CE compliant and meet applicable EU Frequency directives: Low-voltage safety EN61010-1:2001, Frequency range: DC to 10MHz (sine wave). EMC Immunity EN61000-6-1:2001, Emissions EN55011:1998. Frequency resolution: 48-bit Frequency accuracy: As PXI backplane 10MHz clock. Operating/Storage Conditions Frequency sweep: Frequency sweeps can be single Operating Conditions or continuous (ramp up and/or Operating Temperature: 0°C to +55°C down) phase continuous through use of DDS sweep facility. Humidity: Up to 90% non-condensing Altitude: 5000m Output Maximum Output: ±10V, open circuit load. Storage and Transport Conditions Waveform Signal: 10V pk to pk, open circuit load Storage Temperature: -20°C to +75°C Output Offset Voltage: Settable from -5V to +5V in Humidity: Up to 90% non-condensing 10mV steps. Altitude: 15000m Output DAC resolution: 10-bit Signal Level Control: 0 to -40dB, <0.1dB steps. Product Order Codes Output Impedance: 50Ω Three Channel Function Generator 41-620-003 Output Loading: Capable of driving 600Ω with 10V peak e.m.f. Typically capable of driving a 50Ω load with 6V peak Latest Details e.m.f. output (DC and signal). Please refer to our Web Site for Latest Product Details. AM Input www.pickeringtest.com Functionality: Single input connection can be used to amplitude one, two or Mating Connectors & Cabling three output channels. AC cou- pled, modulation frequency For connection accessories for the 41-620 module please refer range 10Hz to 20kHz. to the 90-011D RF Connector Accessories data sheet where a Waveforms complete list and documentation can be found for accessories. Waveform memory: 256k per channel of fixed length Alternatively, refer to the Permits any waveform to be Pickering Interfaces “Connection loaded and replayed, including Solutions” catalog for the full sine, square, ramp. list of connector/cabling options, Waveform fidelity limited by fixed including drawings, photos and 15MHz low pass filter. specifications. This is available in Parametric Performance either print or as a download. (AM and DC offset set to 0) Alternatively our web site has SFDR: >40dB (DC to 1MHz, 5Vpp) dynamically linked connector/cabling >35dB (1MHz to 10MHz, 5Vpp) options, including pricing, for all Amplitude accuracy: ±2% DC to 1MHz Pickering PXI modules. 0 to -15% (typically -8%) at 10MHz Trigger and clock Clock source: 10MHz PXI clock or external clock source. Trigger: Level or edge triggered operation. Initiates single shot or continuous operation PXI Trigger sources or external source. Level: Clock and trigger inputs require DC coupled signal derived from 5V CMOS logic drivers, nominal +2.5V input threshold voltage. Physical Parameters Connectors: SMB front panel connectors. Physical Characteristics: One slot, 3U PXI PCI Interface: 33MHz 32-bit address 16-bit data Three Channel Function Generator 41-620-003 Power Requirements +3.3V +5V +12V -12V 1.8A 110mA 75mA 150mA PXI Switch & Instrumentation Pickering Interfaces www.pickeringtest.com Pickering Interfaces are sponsor members of the PXI Systems Alliance www.pxisa.org www.pickeringtest.com E-Mail sales@pickeringtest.com © Copyright (2011) Pickering Interfaces. All Rights Reserved Pickering Interfaces maintains a commitment to continuous product development, consequently we reserve the right to vary from the description given in this data sheet.