1. Manuals
  2. Brands
  3. Aeroflex Manuals
  4. Measuring Instruments
  5. 3030 Series
  6. User manual

Aeroflex 3030 Series User Manual

Wideband rf digitizer pxi modules
Hide thumbs Also See for 3030 Series:
Table of Contents

Advertisement

Quick Links

See also: Operating Manual
3030A, 3030C, 3035, 3035C, 3036
(3030 Series)
Wideband RF Digitizer PXI Modules
User Manual
Document no. 46892/836
Issue 4
30 November 2010

Advertisement

Table of Contents
loading

Related Manuals for Aeroflex 3030 Series

Summary of Contents for Aeroflex 3030 Series

  • Page 1 3030A, 3030C, 3035, 3035C, 3036 (3030 Series) Wideband RF Digitizer PXI Modules User Manual Document no. 46892/836 Issue 4 30 November 2010...

  • Page 2: About This Manual

    PREFACE About this manual This manual explains how to set up and configure an Aeroflex 3030A, 3030C, 3035, 3035C or 3036 wideband RF digitizer PXI module. Where necessary, it refers you to the appropriate installation documents that are supplied with the module.

  • Page 3: Intended Audience

    Checking the software compatibility of a PXI module Use this table to check the compatibility of your 3030 Series PXI module with particular versions of software. Modules with a serial number label consisting of black lettering on a white background •...
  • Page 4 PREFACE Please ensure that you install the correct version of software for your module. Module type Serial number Minimum driver CD-ROM (46886/028) version issue 3030A Up to 303003/971 5.0.0 From 303003/972 6.2.0 3030C Up to 303006/055 6.1.0 From 303006/056 6.2.0 3035 Up to 303004/392 5.0.0...

  • Page 5: Associated Documentation

    Install modules into a rack, interconnect 3000 Series PXI Modules Common Installation Guide them, power up and install drivers. Part no. 46882/663 On the CD-ROM and at www.aeroflex.com Set up a populated chassis ready for 3000 Series PXI Modules Installation Guide for use.
  • Page 6 PREFACE Set up and use a digitizer application for Getting Started with afDigitizer 3010 Series and 3030 Series modules. Part no. 46892/676 On the CD-ROM and at www.aeroflex.com Download example source code You can download examples of source code (written for different application development environments) from the Aeroflex website.

  • Page 7: The Pxi Concept

    (see Fig. 1), which allows them to be inserted into both hybrid slots and standard PXI-1 slots. Because of the reduced connectivity of Aeroflex hybrid-compatible PXI modules, the PXI parallel local bus LBL[0]–[12] disappears, to be replaced by the serial connection LBL[6],...
  • Page 8 PREFACE Fig. 1 Standard PXI-1 connector (L) and hybrid-compatible PXI connector (R) This table shows which Aeroflex wideband RF digitizer PXI modules fit only in a standard slot, and which fit in both hybrid-compatible and standard slots: 3030A Standard 3030C...

  • Page 9: General Information

    IF or IQ data pairs at the rear-panel PCI and front-panel data interfaces. Software supplied with the module allows for spectrum analysis of the digitized signals. 3030 Series RF Digitizer modules can be used in RF test and measurement systems used in development or manufacturing. Applications span all areas of radio communications.
  • Page 10 3030 Series module. Software A 3030 Series module is supplied with a VXI PNP driver and soft front panel for use as a standalone module. It is also supplied with an instrument-level signal generator soft front panel, a dll, a COM object, and a .net assembly for use with a 3010 Series RF synthesizer.

  • Page 11: Deliverable Items

    RF Investigator, also supplied with the module, is an application that provides combined operation of all Aeroflex 3000 Series modules from a single user interface, especially useful for acceptance testing. Refer to Getting Started with afDigitizer (part no. 46892/676) supplied on the PXI Modules CD-ROM part no.

  • Page 12: Putting Into Storage

    For the latest specifications, see the data sheet included on the CD-ROM (part no. 46886/028) or go to the Aeroflex website. All 3030 Series specifications are defined when used in conjunction with the 3010/11 RF Synthesizer PXI module and driver software supplied with the module.

  • Page 13: Initial Visual Inspection

    INSTALLATION WARNING Initial visual inspection Refer to the 3000 Series Common Installation Guide part no. 46892/663 on the PXI Modules CD-ROM, part no. 46886/028. Handling precautions Refer to the 3000 Series Common Installation Guide part no. 46892/663 on the PXI Modules CD-ROM, part no.

  • Page 14: Connector Care And Maintenance

    INSTALLATION Installing the module into the PXI chassis Refer to the 3000 Series Common Installation Guide part no. 46892/663 and Installation Guide for Chassis part no. 46882/697 on the PXI Modules CD-ROM, part no. 46886/028. Connector care and maintenance How to connect and torque an SMA connector First, ensure that the mating halves of the connector are correctly aligned.

  • Page 15: Use A Connector Saver

    INSTALLATION Use a connector saver! Use a connector saver (part no. 46885/224, supplied): (a) on any connector where the cable is routinely connected and disconnected (b) when the connector on the cable, or the cable end of the connector saver, has not been gauged.

  • Page 16: Front Panel Connectors

    OPERATION Front-panel connectors 77.76 MHz. SMA socket, 50 Ω. IF OUT 10 MHz I/O Two SMA I/O sockets in parallel. 3030A Input Ext frequency standard input for sampling clock. 1.0 to 4 V pk-pk into 50 Ω. IF IN IF OUT Output Link-through from input.
  • Page 17 OPERATION RF IN SMA socket, 50 Ω. 10 MHz I/O Two SMA I/O sockets in parallel. 3030C Input Ext frequency standard input for sampling I/P PWR clock. 1.0 to 4 V pk-pk into 50 Ω. 30dBm MAX RF IN Output Link-through from input.
  • Page 18 OPERATION SMA socket, 50 Ω. RF IN 10 MHz I/O Two SMA I/O sockets in parallel. Input Ext frequency standard input for sampling I/P PWR clock. 1.0 to 4 V pk-pk into 50 Ω. 30dBm RF IN Output Link-through from input. TRIG LO IN 1.5 to 3 GHz, nominally 0 dBm.

  • Page 19: Soft Front Panel (Af3030_Sfp)

    CD-ROM). Access the soft front panel from the Windows Start menu under Programs\Aeroflex\PXI Module Front Panels\AF3030 Soft Front Panel. Or open the af3030_sfp.exe file, which if you did not change the default location, is located with the VISA software. The soft front panel, similar to that in Fig. 5, is displayed.
  • Page 20 OPERATION IF/IQ data format Menu bar Boot C6354 Acquisition & Input conditioning RF tuning triggering Fig. 5 3035 soft front panel (other 3030 Series are similar)
  • Page 21 Menu bar File Save Captured Data (as ASCII file)… captures the 16-bit sample data into the specified ASCII file. Save Captured Data (as Binary file)… captures the 16-bit sample data into the specified binary file. Click File\Exit on the menu bar to close the application.
  • Page 22 MENU BAR ON SOFT FRONT PANEL Settings\LVDS on the menu bar allows you to set: Clock Rate: the LVDS clock rate, choice of 180 MHz, 125 MHz (default), 62.5 MHz. • Each LVDS Data, Auxiliary and Marker mode for input, output or tri-state (default) •...
  • Page 23 PXI_STAR LA_SER PXI_TRIG[0]–[7] PXI LBL[6] (3030C/3035C/3036 only) PXI LBL[0] [12] (3030A/3035 only) – PXI BACKPLANE BUS ROUTING MATRIX TRIG 3030 SERIES PXI MODULE C6382 DATA LVDS_MARKER1–4 LVDS_AUX[0]–[4] LVDS_SPARE[0]–[2] Fig. 6 Routing matrix in 3030 Series...
  • Page 24 Aeroflex if you need assistance in defining particular routing requirements. 3030 Series are hybrid slot-compatible PXI-1 peripheral modules, and so all but one of the parallel LBL outputs are grayed out and unavailable. Instead, the drop-down menu associated...
  • Page 25 MENU BAR ON SOFT FRONT PANEL Output enable Input signal check boxes selection C6218 Output signals Input signals Fig. 7 Routing matrix inputs and outputs (other 3030 Series are similar)
  • Page 26 MENU BAR ON SOFT FRONT PANEL Routing matrix signals are shown in the following tables. All signals are active high. Note that some signals apply to 3030C/3035C/3036 or 3030A/3035 only. Note: the labels shown below are prefixed af3030_ROUTE_ when using af3030_32.dll (see af3030_lib_const.h).
  • Page 27 MENU BAR ON SOFT FRONT PANEL Routing matrix data destinations: internal signals Name in SFP Label Description LIST_ADDR[0]–[7] LA_IN_N Selects the list address (parallel mode – also requires LIST STB to be assigned). LIST_STB LSTB_IN List address strobe input (used for parallel mode only) LA_SER LA_SER Selects the list address (serial mode —...
  • Page 28 MENU BAR ON SOFT FRONT PANEL Routing matrix data sources: external signals Note that, in general, bidirectional external signals that have been enabled as outputs can still be used as a data source. Name Label Description PXI Trigger[0]–[7] PXI_TRIG_N Signals from the PXI Trigger bus. PXI Star Trigger PXI_STAR Dedicated trigger line from the module in slot 2.
  • Page 29 MENU BAR ON SOFT FRONT PANEL Routing matrix data sources: internal signals Name Label Description Internal Trigger INT_TRIG Internal level trigger selected by internal trigger mode (absolute or relative). See INT_TRIG Internal Timer TIMER INT_TIMER Internal timer output. See Capture Busy CAPT_BUSY Data capture active.
  • Page 30 MENU BAR ON SOFT FRONT PANEL Settings\Optimization on the menu bar allows you to choose how the module compensates for the effect of temperature changes and RF frequency response. Auto Temperature Optimization (default) monitors the temperature of the module at regular intervals and adjusts the correction figure for the current temperature.
  • Page 31 MENU BAR ON SOFT FRONT PANEL Options Allows you to enable or disable additional instrument options if you have the appropriate password (available from the Aeroflex sales desk). Click Options\Edit… on the menu bar display the options screen (Fig. 8).
  • Page 32 MENU BAR ON SOFT FRONT PANEL View Allows you to view results in different formats. View FFT (default) displays a single graph showing logarithmic power versus frequency. The default span is 66% of full span. You can modify the top of screen reference power (dBm) and the vertical scaling (dB/div).
  • Page 33 MENU BAR ON SOFT FRONT PANEL FFT Display This menu is enabled only when View\View FFT is selected. It allows you to hide/display the graticule and save the dB levels of the trace as a .txt or other file. Graticule Visible hides or displays the graticule. The Span menu selects either Full or Truncated (approx.
  • Page 34 MENU BAR ON SOFT FRONT PANEL Time Series Display When View Time Series is selected, the Time Series Display menu is enabled, allowing you view I and Q traces on two separate graphs or overlaid in different colors. Graticule Visible hides or displays the graticule. IQ Separate Graphs displays separate graphs of Time Series (I) and Time Series (Q).
  • Page 35 MENU BAR ON SOFT FRONT PANEL Capture By default, the module captures data to the screen (To Screen Only), but you can also capture results to ASCII or binary files whilst continuing to display on screen (To ASCII File and Screen; To Binary File and Screen). File Setup…...
  • Page 36 Click Boot (here) to initialize the module and view the Boot Resource window. Resources available for initializing are shown in blue. Select the 3030 Series module you want to boot. Boot default FPGA configuration box. Check this. Do not change the configuration unless you are advised otherwise.
  • Page 37 RF tuning RF Channel Sets the currently active channel in a range of 0 to 127. Chan List Click this to set up the channels for list mode operation. You can Load Save the settings file to make setup easier. RF Freq (Hz) This is the RF input frequency.
  • Page 38 Shows the frequency to which a 3010 Series RF synthesizer module or other source should be set in order to provide the correct LO frequency for the 3030 Series module. If you are using a 3010 Series module, simply double-click on the field, copy the value, and paste it into the RF Frequency (Hz) field on the 3010 Series module’s soft front panel.

  • Page 39: Input Conditioning

    Input conditioning RF Input Level (dBm) Set this to the peak level of the input RF signal to insure the best dynamic range and signal-to- noise ratio. Set the RF input level using the up/down arrows or by entering the level, in the range −99.00 to +30.00 dBm (+22 dBm, 3030A only) in Auto Atten Config mode.
  • Page 40 INPUT CONDITIONING ON SOFT FRONT PANEL IF Atten Sets the IF attenuator value, which changes the input level to the ADC. This value can only be adjusted manually if Atten Config is set to Manual. Set the IF attenuator level using the up/down arrows or by entering the level in 1 dB steps (you are unlikely to use more than +31 dB).
  • Page 41 INPUT CONDITIONING ON SOFT FRONT PANEL ADC Overload Level Indicates the RF input level that could cause ADC Overload error. The displayed overload level is clamped to the safe input level. Pre-Amp (3030C/3035C/3036 only) When Atten Config is set to Auto IF or Manual, ticking this box switches in the preamp. In Auto mode, the preamp is switched in automatically when signal levels require it.
  • Page 42 INPUT CONDITIONING ON SOFT FRONT PANEL DC Offset (3030A/3035 only) Click this button to control DC offset and dither: Fig. 9 DC offset and dither control Remove DC Offset Tick this box to remove the DC component from captured IF or IQ data. DC components at the edge of the span at full and/or ½...
  • Page 43 INPUT CONDITIONING ON SOFT FRONT PANEL This table shows how the DC offset removal and dither tick boxes interact: Remove DC Offset Enable Dither not ticked Enable Dither ticked Ticked DC offset tracked out Dither removal filter is enabled DC offset is removed Not ticked DC offset is not removed Dither removal filter is disabled...
  • Page 44 Acquisition & triggering Capture Trigger Allows you to select the trigger source from a drop-down list: Software trigger • SW_TRIG This is a non-triggered capture mode. Click on Start to capture samples (defined by Number of Samples) when in Single/Repeat mode, without waiting for any external event. Click Stop to end the capture.
  • Page 45 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL Most of the hardware triggers share a common triggering interface:...
  • Page 46 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL Internal Source Set IQ or IF triggering. IQ triggering allows IQ selective triggering (3030C/3035C/3036 only). Trigger Type Set to Edge or Gate Edge/Gate Polarity Set +ve or –ve Trigger Offset Delay Delays the trigger by a specified number of output sample periods.
  • Page 47 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL Trigger Hold-Off The trigger signal is valid only if the inactive period T before the active edge of the signal is greater than the specified trigger hold-off period. Trigger C6205 IQ Trig Decimation This function is enabled only when Internal Source is set to IQ.
  • Page 48 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL PXI_TRIG [0–7] • Takes its trigger input from any one of eight bits of the PXI trigger bus that is common to all modules in the chassis. • PXI_STAR Takes its trigger input from a module that has ST functionality and is fitted in PXI slot 2. PXI_LBL (Local Bus Left) [6] (3030C/3035C/3036 only) •...
  • Page 49 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL • INT_TIMER Takes its trigger from the internal timer. This timer trigger can also be routed to other modules using the routing matrix. Similarly, this timer can be synchronized with the external signal connected to the TIMER_SYNC signal in the routing matrix.
  • Page 50 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL Click Timer Settings… to display the Timer Settings screen. Use Channel When checked, lets you use a different timer period for each Timers channel. The timer period is determined by the active channel’s Period (see below), and applies while that channel is active.
  • Page 51 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL Period Sets the period of the active channel (in number of output samples) if Use Channel Timers is enabled. Otherwise, sets the common timer period in μs. Mark/space ratio in either mode is 50%.
  • Page 52 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL • INT_TRIG Takes its trigger from the internal level trigger.
  • Page 53 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL Int Trigger Mode Select the internal level trigger mode: Absolute/Relative Absolute: the digitized signal is filtered using an absolute time constant. An internal level trigger is generated when the level of this filtered signal exceeds the absolute level trigger threshold (specified in dBm).
  • Page 54 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL Relative Threshold The threshold value (dB) compared with the difference signal filtered using Relative Slow and Fast Time Constants. Signal envelope Envelope output, fast time constant filter Envelope output, slow time constant filter +ve trigger point Difference pulse...
  • Page 55 ACQUISITION AND TRIGGERING ON SOFT FRONT PANEL Trigger mode and control Mode: Selects Single-shot or Repeat data capture. Use with the Start and Stop buttons to initiate and stop data capture. The indicator shows the status of the trigger or capture: green when waiting for a trigger or capturing, gray when idle.
  • Page 56 IF/IQ data format Sample Data Type Select IQ or IF sample data type. IQ Sample Data: output sample rate is determined by the Modulation Mode and • Decimation Ratio IF Sample Data: output sample rate is fixed at 250 MHz (3030C/3035C/3036) or •...
  • Page 57 IQ/IF DATA FORMAT ON SOFT FRONT PANEL Alternatively, enter a different Generic Decimation Ratio and scale the Undecimated Sample Rate accordingly. The resultant sample rate is shown in the Decimated Sample Rate box. define a fractional rate by setting the numerator and denominator. Click on the button adjoining the Undecimated Sample Rate box to open the popup panel and enter a fractional sample rate:...
  • Page 58 IQ/IF DATA FORMAT ON SOFT FRONT PANEL Pre-defined rates: UMTS data mode: 61.44 MHz/2 (where N = 1 to 10) • (4-N) GSM resampled IQ data mode: 13 MHz/(3 * 2 ), where N = 0 to 4 (2 times symbol •...
  • Page 59 IQ/IF DATA FORMAT ON SOFT FRONT PANEL Undecimated Samp Rate (MHz) Displays the internal undecimated sampling rate before division by the decimation ratio. GENERIC 250 MHz 3030C/3035C/3036 only max. 85 MHz 3030A/3035 only UMTS 61.44 MHz = 3.84 MHz (3GPP chip rate) x 16 4.3333 (rec.) MHz = 270.8333 (rec.) kHz (GSM bit rate) x 16 CDMA2000 1X...
  • Page 60 IQ/IF DATA FORMAT ON SOFT FRONT PANEL IQ Data Output Format (3030C/3035C/3036 only) Select 16- or 32-bit, subject to the modulation mode and decimation ratio chosen. Sample rates Modulation Decimation ratio IQ sample rate IQ data format (Msymbol/s) GENERIC variable 6 (when Output Sample Rate >...
  • Page 61 IQ/IF DATA FORMAT ON SOFT FRONT PANEL IQ Data Output Format (3030A/3035 only) Select 16- or 32-bit, subject to the modulation mode and decimation ratio chosen. Sample rates Modulation Decimation ratio IQ sample rate IQ data format (Msymbol/s) GENERIC variable 16 (when Output Sample Rate >...
  • Page 62 IQ/IF DATA FORMAT ON SOFT FRONT PANEL Decimated Samp Rate (MHz) Displays the result of the undecimated sampling rate divided by the decimation ratio. Number of (IF/IQ) Samples The name of the field changes to reflect the sample type selected. Sets the sample size (number of samples to be captured): 3030C/3035C/3036: up to 64 x 10 IQ pairs with 32-bit storage, 128 x 10...

  • Page 63: List Mode Operation

    List mode operation Introduction List mode operation associates a list address with a particular RF setup (channels 0–127). When the module is set to list mode operation, a new address, when strobed in, causes the module to change to the RF setup (channel) associated with that address. List mode operation facilitates fast channel hopping during, for example, testing of transmitter/receiver modules where numerous different RF level and frequency settings are needed.
  • Page 64 Channel List Click Chan List on the soft front panel to display individual channel list settings (Fig. 11). This is where you define channel setup for list mode operation. Fig. 11 Edit channel list settings (other 3030 Series are similar)
  • Page 65 LIST MODE Edit individual channel parameters by selecting the specific channel. Channel parameters are: Freq (Hz) LO Position Atten Config RF Level (dBm) RF Atten (dB) IF Atten (dB) Period (μs/output samples) Select the channel to be edited either by changing the channel number on the panel or by clicking on the corresponding channel row in the channel list.
  • Page 66 Define start and finish values for address numbers in the Chan range, from: and to: fields. Insert values and click Set for each field. You are asked to confirm each action. When finished, click Close to return to the Channel List screen. Fig. 12 Edit all channel settings (other 3030 Series are similar)
  • Page 67 (internal or external) that actions a new list address is handled. You can also set up the internal sequential counter and the timer that drives it. Fig. 13 Edit list mode settings (other 3030 Series are similar)
  • Page 68 LIST MODE Address Source Defines the source from which the seven-bit-wide list address is obtained. Manual: RF list addresses are register-driven values, manually controlled by setting the RF Channel. External: RF list addresses are sourced from the signal routing matrix (Fig.
  • Page 69 LIST MODE Timer Dwell Defines the period of the list timer, in units of 0.1 μs. The range is 1 μs to 600 s. Timer… Click to display the Timer Settings screen.

  • Page 70: Program Files

    Program files are installed onto your computer from the CD-ROM. Find registered com DLLs and ocx components, .net assemblies, libraries, source and associated help files in the program installation folder on your computer. This is typically: C:\Program Files\Aeroflex\PXI All executable C DLLs are installed in: C:\WINDOWS\system32...

  • Page 71: Driver Export Functions

    Help files are provided in three formats: 3030 Series function documentation Text file af3030.doc 3030 Series Visual BASIC function reference af3030.hlp Windows Help file format 3030 Series C language function reference af3030_C.hlp...
  • Page 72 DRIVER EXPORT FUNCTIONS The file opens at the Contents page: Fig. 14 Online help contents — example Hyperlinks from here take you to Introduction Assumptions Error codes Functions listings...

  • Page 73: Functions Listings

    DRIVER EXPORT FUNCTIONS Functions listings Functions are grouped by type. Click on the hyperlink for details of the function. Each function has a description of its purpose, and may have a list of parameters and return values. Fig. 15 Function description — example...
  • Page 74 PXI Studio User Guide (part no. 46892/809), both supplied on the CD-ROM with the module, for detailed information on creating a fully functional RF digitizer, using a 3030 Series module and 3010 Series RF Synthesizer together. The afDigitizer dlls and PXI Studio application combine the functions of the individual modules to provide a single interface with the appearance and functionality of an integrated instrument.

  • Page 75: Data Connector And Timing

    DATA connector and timing The DATA connector is a 68-way female VHDCI-type LVDS (low-voltage differential signaling) interface. It can be used to output data and associated control and timing signals. The DATA connector is shown in Fig. 16. LVDS data conforms to ANSI/TIA/EIA-644. C5504 Fig.
  • Page 76 DATA CONNECTOR AND TIMING Table 1 DATA pin-out Contact Function Contact Function AUX0- AUX0+ AUX1+ AUX1− AUX2+ AUX2− SPARE1+ SPARE1− SPARE2+ SPARE2− CLK_IN+ CLK_IN− CLK_OUT+ CLK_OUT− D0− D1− D2− D3− D4− D5− D6− D7− D8− D9− D10+ D10− D11+ D11− D12+ D12−...

  • Page 77: Data Format

    DATA CONNECTOR AND TIMING Contact Function Contact Function MARKER1+ MARKER1− MARKER2+ MARKER2− MARKER3+ MARKER3− MARKER4+ MARKER4− AUX3+ AUX3− AUX4+ AUX4− Data format (3030C/3035C/3036 only) The data output to the DATA interface is real-time. In resample mode, data is output using a 180 MHz, 125 MHz or 62.5 MHz clock (depending on LVDS clock rate).
  • Page 78 DATA CONNECTOR AND TIMING Data format (3030A/3035 only) The data output to the DATA interface is real-time. In resample mode, data is output using a 103.68 MHz clock. The data is bursted to achieve the correct average sample rate. D0-D15 (Sample Sample Data Output Format: DATA) in Output Mode 16-bit IQ: 2 x D[15:0], I followed by Q, D[0]=LSB.

  • Page 79: Data Timing

    DATA CONNECTOR AND TIMING Data timing Data transmission for generic modulation mode 3030C/3035C/3036 only In this mode, IQ data is resampled to produce IQ data in the range 180 MHz/2 , 125 MHz/2 or 62.5 MHz/2 , where N = 1 to 14. The clock frequency depends on the LVDS Clock Rate setting.
  • Page 80 DATA CONNECTOR AND TIMING CLK_OUT IQSEL_OUT D[15:0] Fig. 18 DATA timing for generic modulation in 16-bit IQ mode, integer relationship, 125 MHz clock 3030A/3035 only In this mode, IQ data is resampled to produce IQ data in the range 51.84 MHz/2 where N = 0 to 13.
  • Page 81 DATA CONNECTOR AND TIMING CLK_OUT IQSEL_OUT D[15:0] Fig. 20 DATA timing for generic modulation in 16-bit IQ mode, non-integer relationship...
  • Page 82 DATA CONNECTOR AND TIMING Data timing for UMTS modulation mode and decimation ratio of 2 3030C/3035C/3036 only The LVDS clock rate is selectable between 180 MHz, 125 MHz or 62.5 MHz. The default is 125 MHz. The module’s soft front panel allows the clock rate, the modulation mode and the decimation ratio to be selected.
  • Page 83 DATA CONNECTOR AND TIMING 3030A/3035 only The ADC in the module is clocked at a rate of 103.68 Ms/s. The module’s soft front panel allows both the modulation mode and the decimation ratio to be selected. IQSELECT_OUT is toggled only when an IQ data pair is being transmitted. If UMTS is selected as the modulation mode and a decimation rate of two is selected, the IQ data rate is 30.72 Ms/s.
  • Page 84 DATA CONNECTOR AND TIMING Data timing for UMTS modulation mode and decimation ratio of 4 3030C/3035C/3036 only An example of timing relationships for the DATA interface is shown in Fig. 23. The CLK_OUT signal is continuous and remains fixed, irrespective of the modulation mode and the decimation rate.
  • Page 85 DATA CONNECTOR AND TIMING 3030A/3035 only The timing relationships for the DATA interface are as shown in Fig. 24. The CLK_OUT signal is continuous and remains fixed at 103.68 MHz, irrespective of the modulation mode and the decimation rate. The ratio of ADC clock rate to IQ sample rate is 103.68 = 6.75, a non-integer value that means that data is output sometimes on the 6 15.36...
  • Page 86 DATA CONNECTOR AND TIMING Data timing for UMTS modulation mode and decimation ratio of 8 3030C/3035C/3036 only An example of timing relationships for the DATA interface is shown in Fig. 25. The CLK_OUT signal is continuous and remains fixed at the selected LVDS clock rate, irrespective of the modulation mode and the decimation rate.
  • Page 87 DATA CONNECTOR AND TIMING In 32-bit mode, data is transmitted as two 16-bit words, MSW then LSW for I then Q, as shown in Fig. 26. CLK_OUT IQSEL_OUT D[15:0] Fig. 26 DATA timing for 32 bit IQ, UMTS mode and decimate by 8 3030A/3035 only The timing relationships for the DATA interface are as shown in Fig.
  • Page 88 DATA CONNECTOR AND TIMING In addition, for decimation ratios of 8 or greater, IQ data can be 32-bit. In this mode data is transmitted as two 16-bit words, MSW then LSW for I then Q, as shown in Fig. 28. CLK_OUT IQSEL_OUT D[15:0]...
  • Page 89 DATA CONNECTOR AND TIMING Data timing for CDMA2000 1X modulation mode If a modulation mode of CDMA2000 1X and a decimation value of 1 are both selected, IQ data is generated at eight times the CDMA2000 1X chip rate. As the chip rate is 1.2288 MHz, this gives an IQ sample rate of 9.8304 Ms/s.
  • Page 90 DATA CONNECTOR AND TIMING Data transmission for GSM modulation mode and a decimation ratio of 1 In this mode the IQ data is resampled to produce IQ data at 16 times the GSM symbol rate of 270.83 kHz, that is, 4.333 Ms/s. An example of timing relationships for the DATA interface is shown in Fig.
  • Page 91 DATA CONNECTOR AND TIMING Data transmission for 2319E emulation mode In this mode, the IQ data is resampled to produce IQ data at 4.08 MHz with a decimation ratio of 16. An example of timing relationships for the DATA interface is shown in Fig. 31. Note that the CLK_OUT signal is continuous and remains fixed at the selected LVDS clock rate.

  • Page 92: Brief Technical Description

    LVDS in the form of digital IQ samples. Flexible signal and trigger processing is available. A 3030 Series module can be operated as a spectrum analyzer, modulation analyzer, demodulator or part of a radio test set, by selecting the appropriate application software.
  • Page 93 BRIEF TECHNICAL DESCRIPTION 0 dB to –28 dB DIPLEXING FILTER LP IF GAIN 4 dB STEPS RF INPUT IF OUTPUT 330 MHz to 3 GHz 77.76 MHz FREQUENCY ENABLE SWITCH DIVIDER ¸ FREQUENCY ENABLE DIVIDER ¸ LO INPUT RF BOARD 1500 MHz to 3 GHz 10 MHz INPUT...
  • Page 94 BRIEF TECHNICAL DESCRIPTION DIPLEXING FILTER 6 GHz MIXER FREQUENCY DOUBLER DIPLEXING FILTER 0 dB to –31 dB IF GAIN 3 GHz MIXER 6 dB 1 dB STEPS RF INPUT IF OUTPUT 330 MHz to 6 GHz 77.76 MHz FREQUENCY ENABLE SWITCH DIVIDER ¸...
  • Page 95 BRIEF TECHNICAL DESCRIPTION PREAMP UP-CONVERTER 0 dB to –31 dB Fc = 900 MHz MIXER 1 dB STEPS 250 kHz to 500 MHz Up-converter LO 800 MHz to 1300 MHz Fc = 500 MHz LEVELLING LOOP PREAMP IF GAIN Fc = 3 GHz 0 dB to –31 dB Fc = 250 MHz 3 GHz MIXER...
  • Page 96 BRIEF TECHNICAL DESCRIPTION PREAMP UP-CONVERTER 0 dB to –31 dB Fc = 900 MHz MIXER 1 dB STEPS 250 kHz to 500 MHz Up-converter LO 800 MHz to 1300 MHz Fc = 500 MHz LEVELLING LOOP PREAMP IF GAIN 0 dB to –31 dB Fc = 250 MHz Fc = 3 GHz 3 GHz MIXER...
  • Page 97 BRIEF TECHNICAL DESCRIPTION 1 GHz ¸ VCO & PLL 250 MHz CLOCK 0 dB to –31 dB 0 dB to –31 dB 1 dB STEPS 62.5 MHz IF 1 dB STEPS IF INPUT DIGITIZED RF from 3 GHz RF BOARD 187.5 MHz IF DIGITIZER BOARD TRIG...
  • Page 98 GLOSSARY Adjacent Channel Leakage Ratio: a measurement of transmitter performance for W-CDMA. ACLR It is the ratio of transmitted power to the power received (after filtering) in the adjacent RF channel. It describes the amount of distortion generated due to nonlinearities in RF components, and is a critical measurement for CDMA transmitters.
  • Page 99 GLOSSARY dynamic link library: an executable file that allows programs to share code and other resources necessary to perform particular tasks. Error Vector Magnitude is used to quantify the performance of a digital radio transmitter or receiver by measuring the deviation of received constellation points from their ideal positions. Frequency Modulation: modulation of the frequency of a carrier wave.
  • Page 100 GLOSSARY Plug-‘N’-Play PCI eXtensions for Instrumentation Backwards compatible with PXI, but providing faster timing and signal lines. PXI Express Quadrature Amplitude Modulation: two amplitude-modulated carriers at the same frequency but at a relative phase angle of 90 degrees are combined in a single channel. This doubles the effective bandwidth of the transmission.
  • Page 101 GLOSSARY Unit Under Test Voltage-Controlled Oscillator: a frequency generator whose output frequency is a function of an applied voltage. If the applied voltage varies, the output is modulated. Very High Density Cable Interconnect VHDCI Very High Frequency: radio signals in the range 30 MHz to 300 MHz. Voltage Standing-Wave Ratio: the voltage ratio of the amplitude of a partial standing wave at VSWR an antinode (maximum) to the amplitude at an adjacent node (minimum), in a transmission...

This manual is also suitable for:

3030a30353035c30363030c

Table of Contents