Zephyr UDPSDR-HF2 User manual

UDPSDR-HF2 Receiver Front-end
User’s Manual
Version 3.5 –3 October 2013
© Copyright 2013 Zephyr Engineering, Inc

© Copyright 2013 Zephyr Engineering, Inc
UDPSDR-HF2 User’s Manual i Version 3.5 –3 October 2013
1HARDWARE DESCRIPTION 1
1.1 UDPSDR-HF2 CONNECTORS,HEADERS AND JUMPERS 1
1.1.1 UDPSDR-HF2 CONNECTORS 1
1.1.2 UDPSDR-HF2 HEADERS AND JUMPERS 3
1.2 BEMICROSDK CONNECTORS,SWITCHES AND LEDS4
1.2.1 BEMICROSDK CONNECTORS 4
1.2.2 BEMICROSDK LEDS5
1.2.3 BEMICROSDK SWITCHES 7
2QUICK START GUIDE 9
3DETAILED OPERATION 9
3.1 STEP QS1 –DOWNLOAD AND INSTALL PROGRAMMING SOFTWARE 10
3.1.1 HOW TO DETERMINE WHAT PROGRAMMING SOFTWARE YOU NEED 10
3.1.2 DOWNLOAD AND INSTALL SOFTWARE 11
3.2 STEP QS2 –INSTALL USB BLASTER DRIVER 12
3.3 STEP QS3 –PROGRAM BEMICROSDK 13
3.3.1 SIDEBAR:BEMICROSDK CONFIGURATION FLASH ROM AND THE UFB 13
3.3.2 QS3A –CREATING A USER FLASH BLOCK FILE 14
3.3.3 QS3B –PROGRAMMING THE BEMICROSDK CONFIGURATION FLASH ROM 14
3.3.4 SIDEBAR:HOW THE BEMICROSDK GETS ITS MAC AND IP ADDRESSES 14
3.4 STEP QS4 –MAKE EXTERNAL CONNECTIONS 15
3.4.1 QS4B –ANTENNA 15
3.4.2 QS4C –ETHERNET DATA CONNECTION 15
3.4.3 QS4D –POWER 15
3.5 STEP QS5 –INSTALL AND RUN GUI SOFTWARE 16
3.5.1 HDSDR 16
3.5.2 SDR# 17
3.5.3 POWERSDR 18
3.5.4 GNURADIO 18
4TROUBLESHOOTING 19
4.1 PATH VARIABLE INCORRECTLY SET 19
4.2 JAVA NOT INSTALLED 19
4.3 NETWORK CABLE NOT PLUGGED IN 20
4.4 INCORRECT NETWORK ADDRESS ASSIGNMENTS 20
4.5 EXTIO.DLL NOT IN CORRECT DIRECTORY 20
5THEORY OF OPERATION 20
5.1 UDPSDR-HF2 FRONT-END HARDWARE 20
5.2 UPDSDR-HF2 FPGA CODE 21
6SPECIFICATIONS 22
7APPENDIX A –UDPSDR-HF2 J1/J2 PIN DEFINITIONS 23

© Copyright 2013 Zephyr Engineering, Inc
UDPSDR-HF2 User’s Manual 1 Version 3.5 –3 October 2013
1 Hardware Description
The following sections will help familiarize you with the setup and connections to your
SDRstickTM HF2 SDR receiver.
1.1 UDPSDR-HF2 Connectors, Headers and Jumpers
See Figure 1 for UDPSDR-HF2 connector and jumper locations.
Figure 1 UDPSDR-HF2 Topside Connectors and Jumpers
1.1.1 UDPSDR-HF2 Connectors
1.1.1.1 J1 and J2 –BeMicroSDK connector
The J1 and J2 80-pin dual-sided MEC-style edge connectors plug onto the gold-finger
edge connector on the end of the BeMicroSDK. Either J1 or J2 connect digital data and
power between the HF2 and the BeMicroSDK. Either connector may be used; all J1 and
J2 pins are connected in parallel.
J3- Power In
J1 –(top)
J2 –(bottom)
BeMicro SDK
P1- OPT Power In
J6- Phones Out
J5- RF Input
JP1- TERM Header
J4- Ref Clk Input
Input
P3- OPT Filter
P4- OPT Filter

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UDPSDR-HF2 User’s Manual 2 Version 3.5 –3 October 2013
Note that the HF2 uses the BeMicroSDK pin assignments, not the MEC connector pin
assignments from the Samtec data sheet. Pin 1 is marked on HF2 by a white dot. The
pin 1 ends of J1 and J2 are closest to the JP1 header. The BeMicroSDK pin 1 is clearly
marked with a “1”. The two correct HF2-to-BeMicroSDK pairings are shown in Figure 2.
Keep in mind that the configuration on the right may introduce some digital noise into
the HF2 front end due to the proximity of the BeMicroSDK digital circuits positioned
directly above the sensitive HF2 front-end circuitry.
Figure 2 - The two correct HF2-BeMicroSDK pairings
1.1.1.2 J3 and P1 - Power In
Power is supplied to the receiver in one of three ways (listed in most-to-least desirable
order): J3, P1 or USB. The combination SDRstickTM HF2 requires 5VDC at about
950mA.
J3 and P1 are equivalent, since they are in parallel. J3 mates with a 2.35mm x .0.7mm
barrel plug (CUI part #PP-012, Digi-Key part#CP-012-ND). P1 is provided for either a
two-pin SMT header (TE part #3-647166-2, Digi-Key part #A113590-ND) or just pads
for soldering wire leads. The center pin of J3 is positive. P1 pin 1 is positive and is
marked with a white dot adjacent to the pad. See Figure 3 for details.
USB 1.1 and most USB 2.0 ports cannot power the SDRstickTM HF2. Some USB 2.0
ports have been observed to work, even though the 950mA supply current greatly
exceeds the USB 2.0 maximum. USB 3.0 can supply enough current, and may work.
NOTE:In order to use the USB port for power, the Altera USB Blaster driver must be
loaded onto the PC. The BeMicroSDK will not even turn on until this driver is properly
installed. No driver is required to power the receiver from J3 or P1. See the Quick Start
Guide.
WARNING: NEVER APPLY EXTERNAL POWER TO J3/P1 WHILE PLUGGED INTO
ANY USB PORT! THIS CAN DAMAGE YOUR USB PORT!
J1 Pin 1
J2 Pin 1

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UDPSDR-HF2 User’s Manual 3 Version 3.5 –3 October 2013
Figure 3 - Power Connector Detail
1.1.1.3 J4 –Reference Clock Input (optional)
J4 can be used as an optional reference clock input. You may apply a 2V peak-to-peak
10MHz sine-wave input from a GPS-disciplined oscillator to this standard SMA jack.
This signal is squared and applied to an FPGA input. FPGA code can phase-lock the
on-board 122.88MHz VCXO sampling clock to this signal for precise frequency control
of the ADC sampling clock.
Note: The current FPGA code implementations do not use the J4 input. It is available as
an option for the user.
1.1.1.4 J5 –RF Input
The receiver RF input is connected to J5, a standard SMA jack. J5 may be connected
directly to a 50-ohm antenna or to the receive port of the UDPSDR-TX2 transmitter.
1.1.1.5 J6 –Phones Out (optional)
Plug headphones into J6, a 3.5mm stereo jack, which connects to the on-board
CODEC/headphone amplifier.
Note: The current FPGA code implementations send receive audio to the PC sound
system rather than to J6. It is available as an option for the user.
1.1.2 UDPSDR-HF2 Headers and Jumpers
1.1.2.1 JP1 –TERM Header
Placing a 2mm jumper on JP1 pins 2-3 adds a 50-ohm termination to the Reference
Clock Input from J4. JP1 pin 1 is connected to system ground for use while probing the
J4 input signal on pin 2. Placing a jumper on JP1 pins 1-2 will place an AC ground
across the J4 input, and is not recommended while driving a signal into J4. (Factory
default is no jumper installed.)
+5VDC - Pin 1
GND - Pin 2
Center Pin +5VDC@950mA
2.35mm x 0.70mm

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UDPSDR-HF2 User’s Manual 4 Version 3.5 –3 October 2013
1.1.2.2 P3 and P4 –Optional Filter Headers
Optional headers P3 and P4 can be used to replace FL1 with a daughter card
containing user-defined mixing, filtering and/or amplification. The user must remove R21
and R22 and install headers at P3 and P4 (Molex part #87759-0664, Digi-Key part
#0877590674-ND). The anti-aliasing filter between the LNA and the ADC will also have
to be modified in order to pass higher frequencies, if this is required. Please consult the
factory for customization options.
Headers P3 and P4 are available as a user option. See Table 1 for P3 and P4 pin
connections.
P3/P4 pin number
P3 function
P4 function
1
+3.3V
+3.3V
2
+3.3V
+3.3V
3
on-board FL1 LPF input
RF to LNA input
4
RF from attenuator output
on-board FL1 LPF output
5
GND
GND
6
GND
GND
Table 1 - P3 and P4 Header Pin Connections
1.2 BeMicroSDK Connectors, Switches and LEDs
See Figure 4 for BeMicroSDK connector, switch and LED locations.
Figure 4 - BeMicroSDK Connectors, Switches and LEDs
1.2.1 BeMicroSDK Connectors
There are three connectors on the BeMicroSDK: one USB type A, one Ethernet RJ-45
and one 80-contact MEC edge connector.
X602 - Ethernet
X201 - USB
S502-S504 –User Buttons
SW1 –User Switches
V701, V703, V704 –Status LEDs
X701 –MEC Connector
LED1-8 –User LEDs
Pin 1

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UDPSDR-HF2 User’s Manual 5 Version 3.5 –3 October 2013
1.2.1.1 USB Connector (X201)
The USB connector is used to program both the FPGA configuration RAM and the
BeMicroSDK configuration flash memory. The BeMicroSDK appears to the host PC as
an Altera Byte Blaster.
The USB connector can also be used to power the SDRstickTM HF2 when it is
connected to a port that can supply sufficient power. USB 3.0 ports and some USB 2.0
powered hubs can power this 950mA load, however it is highly recommended to use a
5V well regulated power supply on J3 (or P1) rather than the SDRstickTM USB
connector.
WARNING: NEVER APPLY EXTERNAL POWER TO J3/P1 WHILE PLUGGED INTO
ANY USB PORT! THIS CAN DAMAGE YOUR USB PORT!
Note: In order to get the SDRstickTM HF2 to power up from a Windows PC USB port, the
Altera Byte Blaster driver must be installed. A Byte Blaster driver is not needed for PCs
running Linux in order to power up the SDRstickTM HF2.
1.2.1.2 Ethernet Connector (X602)
The Ethernet connector (X602) is a standard RJ-45 connector. The BeMicroSDK
supports 10/100Mbps Ethernet, but 100Mbps is required for SDRstickTM HF2. This
connection is used for the receive data stream to a host PC or network switch.
1.2.1.3 MEC Edge connector (X701)
The 80-contact MEC-style edge connector plugs into the UDPSDR-HF2 front-end
board. All of the digital signals between the HF2 and the BeMicroSDK use this
connector. Pin 1 is clearly marked on both the BeMicroSDK and the HF2 board.
Note: The pin numbering is different than that shown on the Samtec connector data
sheet. Be sure to only plug the boards together in one of the two configurations shown
in Figure 2.
1.2.2 BeMicroSDK LEDs
There are two groups of LEDs on the BeMicroSDK: a group of 3 status LEDs below the
RJ-45 connector and a group of 8 user LEDs alongside the MEC connector.
1.2.2.1 Status LEDs (V701, V703, V704)
The leftmost status LED (V701) is the green power indicator LED. The middle status
LED (V703) is yellow, and is lit when the FPGA CONF_DONE pin goes high. The
rightmost status LED (V704) is red and lights when pin 4 of the MEC connector is pulled
low (PWREN2# asserted). Since HF2 never drives this pin low, this LED should never
be lit. See Figure 5 for the status LED locations.

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UDPSDR-HF2 User’s Manual 6 Version 3.5 –3 October 2013
Figure 5 - BeMicroSDK Status LEDs
1.2.2.2 User LEDs (LED1 –LED8)
The eight user LEDs (LED1 –LED8) are under FPGA firmware control. Since the
function of these LEDs is defined by the FPGA firmware, they can have any desired
meaning. Some of the user LEDs are used to indicate some common conditions by the
SDRstickTM firmware, shown in Table 2. See Figure 6 for user LED locations.
LED
Function
LED8 (top)
lit on A/D converter overload condition
LED7
lit on FIFO overflow (internal error condition)
LED6
off
LED5
off
LED4
off
LED3
off
LED2
Heartbeat: flashes ~ 1Hz from HF2 122.88MHz clock
LED1 (bottom)
Heartbeat: flashes ~ 1Hz from BeMicroSDK 50MHz clock
Table 2- UDPSDR-HF2 Firmware User LED Indicators
V701 –Power
V703 –CONF_DONE
V704 –PWREN2#

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UDPSDR-HF2 User’s Manual 7 Version 3.5 –3 October 2013
Figure 6- BeMicroSDK User LEDs
1.2.3 BeMicroSDK Switches
There are five switches on the BeMicroSDK: three push-button switches and two slide
switches. See Figure 7 for switch locations.
1.2.3.1 Push-button Switches (S502 –S504)
The bottom push-button switch (S502), labeled “RECFG”, is used to force an FPGA
reconfiguration. When this switch is pressed, the FPGA is reloaded from the on-board
flash memory and restarts in the same manner as a power-on reset.
The middle push-button switch (S503), labeled “Reset”, is used to reset the FPGA logic
and internal soft-core CPU. Note that this does not cause a reconfiguration; it merely
restarts the FPGA logic from a known reset state.
The top push-button switch (S504), labeled “User”, can be read by the FPGA firmware.
This switch is not currently used.
LED1 –BeMicroSDK Clock Heartbeat
LED3 –not used
LED4 –not used
LED5 –not used
LED6 –not used
LED7 –Internal FIFO Overflow
LED8 –ADC Overload
LED2 –UDPSDR-HF2 Clock Heartbeat

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UDPSDR-HF2 User’s Manual 8 Version 3.5 –3 October 2013
Figure 7 - BeMicroSDK Switches
1.2.3.2 Slide Switches (SW1-1, SW1-2)
The two slide switches, SW1-1 (bottom) and SW1-2 (top), can be read under FPGA
firmware control. SW1-1 and SW1-2 are not currently used by the FPGA firmware.
SW1-1 not used
SW1-2 not used
S502 - Reconfiguration
S503 –FPGA Reset
S504 –not used

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UDPSDR-HF2 User’s Manual 9 Version 3.5 –3 October 2013
2 Quick Start Guide
This quick start guide will lead you through the steps to get your SDRstickTM HF2
receiver operating. Please refer to Section 3 for in-depth information on each of these
steps. If your BeMicroSDK came pre-programmed from the factory, you can skip steps
QS1 and QS3.
QS1. Download and install programming software
a. Download and install Altera Quartus II Web Edition
b. Download and install SDRstickTM Programmer
QS2. Install Altera USB Blaster hardware driver (only needed for Windows)
a. Plug in BeMicroSDK and point to driver
b. Verify that power LED V701 lights on BeMicroSDK
QS3. Program BeMicroSDK
a. Use SDRstickTM Programmer to create User Flash Block FLASH file (make
sure to choose an IP address on the same subnet as the PC, or use
DHCP with a server that issues IP addresses on the same subnet)
b. Use SDRstickTM Programmer to program three FLASH files (two firmware
and one user block) into BeMicroSDK flash memory
QS4. Make external connections
a. Remove BeMicroSDK from computer
b. Install HF2 onto BeMicroSDK and connect antenna to J5
c. Connect Ethernet cable to host PC or network
d. Connect power and observe two flashing heartbeat LEDs on BeMicroSDK
QS5. Install and Run GUI software on computer
a. One or more of GNURadio, HDSDR, SDR#, PowerSDRTM are options
b. ExtIO_SDRSTICK.dll must be placed into the same directory as the
executable files –a separate copy is required for each GUI
c. For HDSDR and SDR#, observe that SDRstick discovery was successful
d. For PowerSDRTM, configure for Hermes, 1 RX and 384K data rate
e. Receive audio is delivered via the PCs sound system
3 Detailed Operation
The sections of this chapter contain (or provide links to) detailed information on each
step necessary to successfully set up the SDRstickTM HF2 Software Defined Receiver. It
is beyond the scope of this document to cover operating-system specific procedures
that are necessary to set up the receiver. It is assumed that the user is capable of
performing the tasks in the following list. Please consult your PC and/or operating
system documentation or use on-line searches to become comfortable with these
procedures.

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UDPSDR-HF2 User’s Manual 10 Version 3.5 –3 October 2013
Install applications
Check system information and update hardware drivers
Enable/disable both wired and wireless network ports
Change PC IP address and network mask
Enable and disable PC DHCP client
Use console to check IP address and ping network devices
Check/set environment variables using the system properties dialog box
Navigate PC file system to copy and move files
3.1 Step QS1 –Download and Install Programming Software
The design and programming software for the BeMicroSDK is available for free
download from the Internet. (Note that this software is different from the SDR GUI
software that is used to operate the radio. We will cover that in section 3.5) There are
four components to this support software. Which of the four components you need are
determined by how you are going to use your HF2 receiver. See Table 3 for a quick
summary of the support software components.
Support Software
Size
Source
Used To
Quartus II Web Edition
Design Software
4.4GB
Altera.com
Write, modify, compile and program
FPGA firmware into FPGA configuration
SRAM
Quartus II
Programmer
140MB
Altera.com
Program FPGA firmware into FPGA
configuration SRAM
USB Blaster Driver
-
Included in Quartus II
Web Edition and Quartus
II Programmer
Enable BeMicroSDK USB power
(Windows); required to program FPGA
configuration SRAM or BeMicroSDK
configuration flash memory
SDRstickTM
Programmer
750KB
svn.SDRstick.com
Program BeMicroSDK configuration
flash memory; create SDRstickTM User
Block FLASH files
Table 3- Support Software Components
3.1.1 How to Determine What Programming Software You Need
To help you to determine what software to load, first we will explain a bit about how the
FPGA works and then show you what each software program does.
3.1.1.1 SideBar: FPGA Configuration Technical Details
The FPGA stores its configuration (firmware) in internal static memory cells (SRAM).
This internal FPGA memory is aptly called configuration SRAM. Since configuration
SRAM is volatile, it must be initialized every time the FPGA is powered on. This can be
done in two ways: from the USB port or from the BeMicroSDK on-board flash-
programmable ROM. When power is first applied, dedicated circuitry inside the FPGA
automatically loads the configuration SRAM from this configuration flash ROM, if it
contains FPGA firmware. (Note that even if the ROM does contain a valid firmware load,

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UDPSDR-HF2 User’s Manual 11 Version 3.5 –3 October 2013
the FPGA configuration SRAM can be overwritten with a new firmware load from the
USB port at any time.)
For the SDRstickTM HF2 receiver to work immediately on power-up, the BeMicroSDK
configuration flash ROM must be programmed with the FPGA firmware load.
The Quartus II Web Edition software and the Quartus II Programmer software are both
capable of writing directly to the FPGA configuration SRAM, but not to the BeMicroSDK
configuration flash ROM. The SDRstickTM Programmer software was developed to write
FPGA firmware loads to the BeMicroSDK configuration flash ROM, allowing the receiver
to run immediately after power is applied.
The SDRstickTM Programmer uses components from the Quartus II Web Edition, as well
as the USB Blaster Driver. Therefore, the USB Blaster Driver and the Quartus II Web
Edition software must be installed in order to use SDRstickTM Programmer.
3.1.1.2 Determine Software Components
See table Table 4 to determine what software you will need to install, depending on how
you want to configure your SDRstickTM HF2 receiver.
If your BeMicroSDK came pre-loaded from the factory and you are powering it from
external power, you do not need to install any support software. If, at some point, you
want to upgrade the firmware, you will need to install the necessary components from
Table 4. You can do this at any time, as you need them.
To Do This
You Need This Support Software
Power HF2 from external power
none
Power HF2 from USB power (Linux)
none
Power HF2 from USB power (Windows)
USB Blaster Driver
Program or update FPGA firmware into BeMicroSDK
configuration flash memory
Quartus II Web Edition, USB Blaster
Driver, SDRstickTM Programmer
Program FPGA firmware into FPGA configuration SRAM for
debugging (this is not common)
Quartus II Web Edition or Quartus II
Programmer, USB Blaster Driver
Write custom FPGA firmware and program into FPGA
configuration SRAM
Quartus II Web Edition, USB Blaster
Driver
Write custom FPGA firmware and program into BeMicroSDK
configuration flash memory
Quartus II Web Edition, USB Blaster
Driver, SDRstickTM Programmer
Table 4 - Support Software Requirements
3.1.2 Download and Install Software
After you have determined what support software you need, go to <altera.com> and/or
<svn.sdrstick.com> and download the installation files. If you need more detailed
installation information, please download the beradio lab from the <beradio> section of

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<svn.sdrstick.com>. Sections 2.4 and 2.5 of the lab walk you through the Quartus II
Web Edition and USB Blaster driver installation.
3.1.2.1 Quartus II Web Edition
This is an extremely large download (about 4.4GB). Unless you have a fast connection
to the Internet, it will take a long time to download. You may be able to save some
download time by downloading individual files rather that the entire Quartus II Web
Edition package. Click on the “Individual Files” tab to select individual components. You
will need two components: Quartus II Software (includes Nios II EDS and Cyclone II,
Cyclone III, Cyclone IV device support). The combined size of these two components
is only a bit over 2GB. After the download finishes, click on the file to install the
software.
3.1.2.2 Quartus II Programmer
To load the Quartus II Programmer, you must go to the “Individual Files” tab and select
Quartus II Programmer and SignalTap II. The size is about 140MB. After the
download finishes, click on the file to install the software.
3.1.2.3 USB Blaster Driver
No download of the USB Blaster driver is required, as it is included with both the
Quartus II Web Edition and Quartus II Programmer.
3.1.2.4 SDRstickTM Programmer
SDRstickTM Programmer is a Windows application that you can download from
<svn.sdrstick.com>. Look in the <sdrstick-release> directory under <sdrstick-
programmer>.
The SDRstickTM Programmer from <svn.sdrstick.com> is an executable windows
installer file. Run the installer and follow the instructions. To un-install, run the installer
again and select the uninstall option.
3.2 Step QS2 –Install USB Blaster Driver
The USB Blaster driver is included in the Quartus II Web Edition and Quartus II
Programmer software. Once you have installed one of those two applications, plug the
BeMicroSDK (without the HF2 attached) into a USB port. Cancel the windows
installation of the driver, and go to the device manager. Find the “USB Blaster” entry in
the table (it will have a yellow “!” next to it) and update the driver for it. Point the updater
to the drivers, typically in the <C:\altera\13.0\quartus\drivers> for version 13.0. The
system variable QUARTUS_ROOTDIR should contain the path to the directory
containing the <drivers> directory.
Once the USB Blaster driver is properly installed, the power LED should light on the
BeMicroSDK.

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NOTE: The USB Blaster driver is not available as a separate download. If you intend to
power your SDRstickTM from the USB port, you must download and install either the
Quartus II Web Edition or the Quartus II Programmer software.
3.3 Step QS3 –Program BeMicroSDK
SDRstickTM Programmer is used for two functions. The first function is to create a User
Flash Block file. The second function is to program FLASH format files into the
BeMicroSDK configuration flash ROM. The SDRstickTM Programmer GUI is shown in
Figure 8. The left pane is used to create a User Flash Block, and the right pane is used
to program FLASH format files into the configuration flash ROM on the BeMicroSDK.
3.3.1 SideBar: BeMicroSDK Configuration flash ROM and the UFB
The BeMicroSDK flash ROM is divided up into three sections: FPGA fabric, NIOS soft-
core CPU program code and the User Flash Block (UFB). Each of these sections is
programmed from a FLASH format file. Two of these files provide the functionality of the
FPGA and are supplied by the factory. The third file defines the contents of the UFB.
Each FLASH file contains a starting address and a length, and corresponds to one of
the three sections of the ROM. Thus, the FLASH files may be specified in any order,
and one, two or three at a time.
The UFB contains the user-defined MAC and IP addresses, and a flag bit that, when
set, causes the BeMicroSDK to request an IP address from a DHCP server. The UFB
can be expanded to include other user-defined parameters in the future.
Figure 8- SDRstickTM Programmer Window
Program Flash Pane
Create UFB Pane
Software Revision

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3.3.2 QS3a –Creating a User Flash Block File
When SDRstickTM Programmer is opened, the Create UFB pane contains a default
MAC address of 00:07:ed:fc:fd:fe, a default IP address of 192.168.1.26 and the DHCP
client turned off. Note that these are only the defaults that may be used to create a UFB
FLASH file, and do not reflect the current BeMicroSDK network settings.
Enter the desired MAC address and either enter an IP address or check the Use DHCP
box to enable the SDRstickTM DHCP client to request an IP address from a DHCP
server.
Note: You must specify a unique MAC address on your network for each device
(including SDRstickTM radios) even if you use DHCP to obtain an IP address.
Once you have set the network parameters, click Generate. You will be prompted for a
path and a file name for the UFB FLASH file. For the network parameters to take effect,
you must program this file into the BeMicroSDK configuration flash ROM using the
Program Flash pane.
Note: A Java script generates the FLASH file. If file generation appears to complete
normally but no FLASH file is created, check to make sure an up to date version of Java
is installed on the PC.
3.3.3 QS3b –Programming the BeMicroSDK Configuration Flash ROM
Use the Program Flash pane to program FPGA firmware FLASH files and UFB FLASH
file into the BeMicroSDK configuration flash ROM.
Click the Add… button to add files to the Files to Program window. Files can be added
in any order. A section of the ROM will only be programmed if the corresponding
FLASH file appears in this window, otherwise that section will be unaffected. You can
update the UFB without updating the firmware, and vice-versa. Click the Program
button to program the files into the configuration flash on the BeMicroSDK.
Note: Components of Quartus II Web Edition are used by SDRstickTM Programmer to
program the BeMicroSDK configuration flash ROM. You should see several command
windows containing scrolling text “pop up” and then close. The windows should appear
long enough for you to read a few lines on each one. If nothing appears to happen, it is
likely that your PATH variable is incorrectly set. Refer to PATH variable incorrectly set in
section 4.1 for a solution.
3.3.4 SideBar: How the BeMicroSDK Gets Its MAC and IP Addresses
When the SDRstickTM is first powered on, it goes through a multi-step process to
determine what MAC and IP address to use on the network.
To determine its MAC address, the SDRstickTM first looks to see if there is a valid UFB.
If a valid UFB exists, the MAC address is obtained from the UFB. If no valid UFB exists

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(I.e., it was not programmed into the configuration flash ROM), then the MAC address is
set to 00:07:ed:01:23:45. This is in the Altera block of IP addresses with the last three
octets set to 0x012345.
Note: In order to use multiple SDRstickTM radios on the same network, you MUST set
unique MAC addresses for each radio that are different from any other MAC address on
the same network.
To determine its IP address, the SDRstickTM first looks to see if there is a valid UFB.
If there is a valid UFB, the SDRstickTM then looks to see if the DHCP client is enabled. If
it is, then a DHCP request is broadcast. If an IP address is received from the DHCP
server, that IP address is used. If the DHCP request is unsuccessful (for example, a
timeout occurs) or the DHCP client is not enabled, the SDRstickTM uses the IP address
from the UFB instead.
If there is no valid UFB, the SDRstickTM broadcasts a DHCP request. If an IP address is
received from the DHCP server, that IP address is used. If the DHCP request is
unsuccessful (for example, a timeout occurs), the SDRstickTM uses the default IP
address of 192.168.1.25.
3.4 Step QS4 –Make External Connections
The SDRstickTM requires three external connections to function: antenna, Ethernet data
connection and power input.
3.4.1 QS4b –Antenna
Connect an antenna to the J5 SMA connector. Note that there is no bandpass filtering
at the receiver front-end. Excessive voltage at the antenna jack can damage the
receiver. The input attenuator can mitigate some input overload conditions, but any
voltage above about 3.5V p-p may damage the input circuitry.
3.4.2 QS4c –Ethernet Data Connection
Connect the BeMicroSDK Ethernet port either directly to a PC network port or to a LAN
through a 100Mbps switch. Even though the port hardware supports 10Mbps and
100Mbps, a 100Mbps connection is required for proper operation. (Even at the lowest
sample rate, 10Mbps Ethernet has insufficient bandwidth to support this receiver.)
3.4.3 QS4d –Power
Connect the power supply to J3. The BeMicroSDK and UDPSDR-HF2 combination
requires about 950mA at 5VDC to operate properly. While the recommended way to
supply power is through connector J3, you may also supply power through the USB
connector if the USB port will supply enough power.

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UDPSDR-HF2 User’s Manual 16 Version 3.5 –3 October 2013
USB 3.0 ports should be able to supply enough current, and some USB 2.0 ports
(especially on powered hubs) have been known to work, even though the required
current is above the maximum USB 2.0 limit.
Since the BeMicroSDK negotiates for power over the USB port before it turns on, you
cannot use a USB charger to power SDRstickTM HF2 regardless of its current capacity.
Note: Clean power is especially important given the high sensitivity of this receiver.
USB power is not noted for its purity. If you experience excessive receiver noise while
on USB power, especially at lower frequencies, consider using a well-filtered external
power supply instead.
WARNING: NEVER APPLY EXTERNAL POWER TO J3/P1 WHILE PLUGGED INTO
ANY USB PORT! THIS CAN DAMAGE YOUR USB PORT!
3.5 Step QS5 –Install and Run GUI Software
Tutorials on SDR GUI software are beyond the scope of this manual, but here are some
quick links and tips for setting up four common but powerful programs that will work with
your SDRstickTM HF2 receiver.
3.5.1 HDSDR
High Definition Software Defined Radio, or HDSDR, is a freeware SDR program for
Windows 2000 through Windows 8. HDSDR is written by Mario Taeubel, DG0JBJ, and
is an advanced version of Winrad. This is an excellent SDR GUI, and may be
downloaded from the HDSDR web site < http://www.hdsdr.de/>
The HDSDR download is an executable installer for Windows. Simply download it to a
directory on your local drive and run it to install the software.
After you have installed HDSDR, you must place a copy of ExtIO_SDRSTICK.dll in the
directory that HDSDR runs. The latest version of this file can be found on the web at
<svn.sdrstick.com> in the <sdrstick-release/software> directory.
If you have followed all of the above steps, when you run HDSDR, an SDRstickTM
network discovery dialog box will pop up showing the IP address of the SDRstickTM
receiver that HDSDR found on the network. Click OK, and the HDSDR main screen
appears. Simply click the Start button and you are on the air!
3.5.1.1 HDSDR Tips
Here are a few tips for using HDSDR with SDRstickTM HF2.
3.5.1.1.1 Soundcard Selection
If you are having receiver audio issues, click on the Soundcard [F5] button. You can
then select one of several options, in case your PC has more than one audio output
device. Also note that there is a Mute button in the left center of the cluster of blue

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buttons above the date display. HDSDR saves the setting of Mute from run to run, so if
you had the receiver muted when you shut HDSDR down, it will still be muted when you
launch HDSDR again.
3.5.1.1.2 Bandwidth Selection
The SDRstickTM firmware gives you two options for input sampling rate: 1.92Msps and
384Ksps. To change the input sampling rate, click the Bandwidth [F6] button. At the
bottom of the left column, you will see a dialog box. Click on the small down-arrow and
you will be presented with two selections, “384000” (384Ksps) and “1920000”
(1.92Msps).
There are two reasons that you might want to select the lower sampling rate. The lower
sampling rate requires less CPU resources, so you might want to choose a lower rate if
you PC is slower or older. Another reason to choose a lower sampling rate is to reduce
the network load. The 1.92Msps sample rate will consume almost 80% of the entire
100Mbps network bandwidth, or about 77Mbps. This will not work over a WiFi
connection unless you reduce the sample rate. At 384Ksps, the data rate is about
15Mbps, which may be transportable over most 802.11g or 802.11n WiFi networks, but
not over 802.11b networks.
3.5.1.1.3 Front End Attenuator
The 31-dB front-end step attenuator is controlled by the RF+0 button in the upper right
of the cluster of blue button located above the date display. Click on this button and a
slider will pop up next to the RF+0 button. As you move the slider down, notice that the
number changes to RF-1, RF-2, etc. The number displayed within the button is the
attenuation selected.
3.5.2 SDR#
SDR# (read SDR Sharp) is a high performance SDR application for Windows written in
C#. It is a fully featured SDR, and is available for download here:
<http://sdrsharp.com/>
The SDR# download is a zip archive, rather than an executable installer for Windows.
Simply download it to a directory on your local drive and unzip the files.
After you have unzipped the files, you must place a copy of ExtIO_SDRSTICK.dll in the
same directory. The latest version of this file can be found on the web at
<svn.sdrstick.com> in the <sdrstick-release/software> directory.
If you have followed the above steps, when you run SDR#, an SDRstickTM network
discovery dialog box will pop up showing the IP address of the SDRstickTM receiver that
SDR# found on the network. Click OK, and the SDR# main screen appears. Simply
click the Play button and you are on the air!

© Copyright 2013 Zephyr Engineering, Inc
UDPSDR-HF2 User’s Manual 18 Version 3.5 –3 October 2013
There is currently no way to control the 31-dB front-end step attenuator from SDR#.
Eventually it will be supported through the SDRSTICK GUI, invoked by clicking the
Configure button in the SDR# top menu bar.
3.5.3 PowerSDR
PowerSDR is fully featured SDR software for Windows, and is available for download
from the openHPSDR downloads page here: <http://openhpsdr.org/download.php>.
Scroll down to near the bottom, under the Windows section, and look for
PowerSDR_mRX_v3.1.5.0_Setup or a similar revision.
The PowerSDR download is an executable installer for Windows. Simply download it to
a directory on your local drive and run it to install the software.
PowerSDR does not require ExtIO_SDRSTICK.dll.
After you launch PowerSDR and before you click the Power button for the first time, you
must click on the Setup tab and configure your hardware. Under the
<General><Hardware Config> tab, select HERMES as your Radio Model, and click the
1-receiver check box. Under the <General><Options> tab, select HIGH as the
Process Priority. Under the <Audio><Primary> tab, select 384000 in the Sample Rate
box. Under the <Audio><VAC1> tab, click the Enable VAC 1 check box.
Close the Setup window and click the Power button and you are on the air! If you go
back to the Setup window now, under the <General><Hardware Config> tab, you will
see your SDRstickTM IP and MAC addresses displayed in the lower right corner of the
window, under Hermes Address.
3.5.4 GNURadio
GNURadio is an open-source software development toolkit for Linux and Windows used
to implement software-defined radios.
These instructions are for GNURadio version 3.6.5.1 under Ubuntu Linux 12.04LTS.
Other versions are available; the installation procedure may be different.
3.5.4.1 GNURadio Installation
Point your browser to the GNURadio web page below and follow the instructions in the
section Using the build-gnuradio script.
http://gnuradio.org/redmine/projects/gnuradio/wiki/InstallingGR#Using-the-build-gnuradio-script
3.5.4.2 SDRstickTM Source Block Installation
Point your browser to the SDRstickTM web SVN server here: <http://svn.sdrstick.com>
and download the file gr-sdrstick-sourceblock.tar.gz from the
<sdrstick-release/gnuradio/sourceblock> directory. Extract the files form this gzip
archive into a directory of your choice. Follow the directions in the extracted