SIGNALCORE NanoSynth SC801A Manuale utente

nanoSynth

Evaluation Development Kit

SC801A/SC802A/SC803A

Rev 1.0

Rev 1.0 | nanoSynth-HB EDK Guide SignalCore, Inc.

Table of Contents

1Verifying the Contents of Your Shipment..............................................................................................3

2nanoSynth-HB Evaluation Board Description ........................................................................................4

3Control Software and Device Driver ......................................................................................................5

4Using the SC801A/SC802A Soft Front Panel..........................................................................................7

4.1 The Control Tab...........................................................................................................................10

4.2 The Configuration Sweep/List Tab...............................................................................................12

4.2.1 List Mode Configuration Sub-Window ................................................................................12

4.3 List Entry Tab...............................................................................................................................13

4.4 The Device Information Tab ........................................................................................................14

5Using the SC803A Soft Front Panel......................................................................................................14

5.1 The Control Window ...................................................................................................................14

5.2 The Information Window ............................................................................................................15

6Revision Table......................................................................................................................................16

Verifying the Contents of Your Shipment

1Verifying the Contents of Your Shipment

The contents of the product package should include the following items:

•One nanoSYnth-HB EDK board kit

•One 12V power supply wall adapter

•Two USB cables

•One USB flash drive contains software, board design files, and product documents

Inspect the shipping carton for visible damage. If carton is damaged, please notify both the

carrier and SignalCore immediately.

The SC801A EDK ships in antistatic packaging to prevent damage from electrostatic discharge

(ESD). The device should always be stored inside an antistatic bag when it is not in use, as ESD can

cause damage to the electronic components on the board. Properly ground yourself and use ESD

good practices when handling the product.

Open the shipping carton and remove all contents. If the contents show visible damage and/or

are missing, please contact SignalCore immediately.

ESD CAUTION

Rev 1.0 | nanoSynth-HB EDK Guide SignalCore, Inc.

2nanoSynth-HB Evaluation Board Description

Figure 1 below shows the evaluation board with arrows pointing to its various functions, which are

described in Table 1.

Figure 1 EDK board

Control Software and Device Driver

3Control Software and Device Driver

The nanoSynth-HB EDK comes with a USB flash drive that contains all software needed to control

and program the onboard nanoSynth devices, namely the SC801A or SC802A as well as the SC803A

reference source. Insert the USB drive into the host computer and navigate to the device_name\win

directory that contains the setup files for the devices. If the host operating system is 64 bits, run the

*Setup64*.exe executable, else run the *Setup32*.exe excutable for 32 bits OS. These setup files for

the device will install a software front panel (SFP) to quickly control the device, programming API for

software development, and the necessary drivers. Follow the instructions to finish the installation.

Note that the LabVIEW 2010 Runtime has to be installed into the system to enable the SFP to work,

and there are a couple of ways to do that. You may choose to install it during the software

installation process, where a Dependencies window (Figure 2) would prompt to select the

installation of the LabVIEW runtime (LVRT). If you did not remember to install the LVRT during

software installation, you may navigate the USB drive to the \LabVIEW Run-Time

Engine\LVRTE2010_f2Patch-64 and run the setup.exe excutable for 64 bits OS.

Item

Description

SC803A reference source module

Reference input SMA connector. When J11, the REF_CLK_SELECT, pins are

jumped this reference is passed to the SC803A reference source module,

otherwise this signal is passed directly to the SC801A/SC802A. The reference

frequency must be 200 MHz if clocking the SC801A/SC802A directly. See the

SC803A for allowable frequencies and recommended input power.

Digital I/O pins for serial communication for the respective device. See

schematics at the end of this document.

12V power jack, 2.5x5.5mm

Mini-B type USB connector for USB communication to the devices

Reference flash erase. Do not jump/short pin together. Doing so and depressing

reset will erase the device flash memory.

Synthesizer flash erase. Do not jump/short pin together. Doing so and

depressing reset will erase the device flash memory.

SC801A/SC802A synthesizer module with attached heatsink

Reference Clock Select. Selects to use the onboard SC803A (pins jumped) or an

external 200 MHz source (pins open) for the SC801A/SC802A. If external clock

source is used, the recommended power is 7-10 dBm.

RF Out

10 MHz Reference out from the SC803A.

Reference out (100/200 MHz) from the SC803A.

SC801A/802A reset button.

SC803A reset button

Configuration switches for the SC801A/SC802A. Configuration switches for the

SC803A. For more information see product datasheet.

Configuration switches for the SC803A. For more information see product

datasheet.

Table 1

Rev 1.0 | nanoSynth-HB EDK Guide SignalCore, Inc.

Once software installation is completed and the device is powered up and connected to the host via

USB, it will show up in the Windows Device Manager as a SignalCore USB Device and the SFP will

appear in the [Start] menu. See Figure 3.

Figure 2 Prompt to install LabVIEW runtime

Using the SC801A/SC802A Soft Front Panel

4Using the SC801A/SC802A Soft Front Panel

The SFP can be launched by clicking the START->Programs->SignalCore->nanoSynth-HB SFP once the

control software and device driver are installed. This executable is written in LabVIEW and its source

code is available in the installation directory. The LabVIEW function library used to develop this

application is also available in the installation directory, and its functions are simply wrappers of the

API (nanohb.dll). The startup screen of the SFP is shown in Figure 4, which show the devices

Figure 3Device Manager Screen and [Start]

Rev 1.0 | nanoSynth-HB EDK Guide SignalCore, Inc.

detected in the host computer in a popup window. Pull down on the menu to select the device

corresponding serial number and interface.

Figure 4. SFP launch

The very first tab in the SFP window is the [Control] tab. You may select other tabs by clicking the

upper left box as shown in Figure 5 below.

Figure 5 Tab listing various windows to view

4.1 The Control Tab

This tab has most of the control function for the device you may change the frequency, adjust the

signal phase, configure the synthesizer modes, and apply the software trigger to start, stop, or step

the list or sweep frequencies. The behavior of the trigger is set up by the list mode configuration

function and is discussed in section 4.2. These controls are on the left side of the tab window as

seen in Figure 6. Details on the synthesizer mode setting are as follows:

Using the SC801A/SC802A Soft Front Panel

•RF Mode –This toggles the device to generate a fix frequency or set it up ready for

sweep/list mode triggering.

•Loop Gain –This toggles the synthesizer phase lock-loop gain between normal and

narrow. Narrow loop gain helps to suppress farther out spurious signals, spurs greater

than 1 MHz away from carrier center. However, this could increase noise in the spectral

region close the carrier.

•Lock Mode –The synthesizer uses 2 phase lock modes for synthesis, Harmonic and

Integer-N. Harmonic mode provides the best phase noise however spurs signals may occur

more frequent. Integer-N mode has less spur occurrences, but the close-in phase noise is

higher. The user may choose between the modes and weigh the benefits of that choice for

a particular application.

•Resolution –This selects the frequency resolution between 1 Hz or 1 mHz, the default is 1

Hz. Choosing 1 mHz places more computational accuracy on the device’s 32 bit

microcontroller and the resulting frequency is more likely to have rounding off errors to

the order of 10e-5 Hz. This rounding off error is less likely for 1 Hz resolution

computations.

•SpurSupp –This enables and disables spur suppression. When it is enabled, the device

tries to bounce between the 2 lock modes, as mentioned above, to avoid noticeable spurs

using a lookup table.

On the right side of the tab window are the current device operating status indicators, as well as

the current temperature of the device. To update the device, select [Fetch Status] and set the time

interval between each status update from the device. The [Fetch Status] turns bright green if it is

active.

Figure 6 The control window

Rev 1.0 | nanoSynth-HB EDK Guide SignalCore, Inc.

4.2 The Configuration Sweep/List Tab

Figure 7 The Sweep configuration window

This tab window is used to configure the device to automatically change the frequencies based on

a list or “sweep frequency parameters”. In this window we configure the sweep list of frequencies

using 3 parameters: the start and stop frequencies, and the step frequency size. These parameters

are inside the “Sweep Freq Parameter” sub-window, see Figure 7. The dwell period sets the time

that the signal spends at a frequency before changing to the next. The sweep/list cycles value sets

the number of cycles the sweep goes through from beginning to end before stopping. If its value is

set to zero, the sweep will cycle indefinitely. The number of sweep points is calculated from the 3

sweep frequency parameters.

4.2.1 List Mode Configuration Sub-Window

This sub-window sets the behavior of the sweep, and its parameters are discussed below.

4.2.1.1 Sweep/List

The parameter instructs the device to either use the frequency points calculated by the 3 sweep

parameters mentioned above, namely the start, stop, and step frequencies, or from a user input

list of frequencies. User input list will be discussed in the next tab section.

4.2.1.2 Sweep Direction

The sweep can be chosen to start at the beginning of a list and incrementally step to the end or

vice versa.

4.2.1.3 Sweep Waveform

The list of frequency points may be swept in a saw-tooth or triangular manner. If sawtooth is

selected, the device will return to the starting point upon reaching the last frequency point.

Plotting frequency versus time reveals a sawtooth pattern. If triangular is selected, the device will

sweep linearly from the starting point, then reverse its direction after the last (highest or lowest)

frequency and sweeps backward toward the start point, mapping out a triangular waveform on a

frequency versus time graph.

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