Furaxa SYNTH300D Manuale utente

SYNTH300D

Dual 300kHz - 300MHz Direct Digital Synthesizer

(Also covers SYNTH300S version)

PRELIMINARY Product Specification and Manual – v1.0

April 15, 2004

Covers Boards With Firmware rev 0.95 (12/1/03)

For Windows XP TM, Windows 2000 TM, Linux TM 7.2 and Solaris 8TM

Furaxa, Inc.

34 Canyon View, Orinda, CA 94563

(925) 253-2969

Fax (925) 253-4894

e-mail : [email protected]

URL : www.furaxa.com

TABLE OF CONTENTS

1. WARRANTY .........................................................................................................................................4

2. MODEL DESCRIPTIONS ...................................................................................................................5

2.1 MODEL SYNTH300D....................................................................................................................5

2.2 MODEL SYNTH300S ....................................................................................................................5

3. SPECIFICATIONS ...............................................................................................................................5

3.1 SYNTHESIZER OUTPUTS ....................................................................................................................5

3.2 FREQUENCY STABILITY ....................................................................................................................6

3.3 PHASE RESOLUTION .........................................................................................................................6

3.4 TTL TRIGGER/MODULATION INPUTS................................................................................................6

3.5 TTL OUTPUTS ..................................................................................................................................6

3.6 GENERAL..........................................................................................................................................6

3.7 PHYSICAL .........................................................................................................................................6

4. HARDWARE ARCHITECTURE .......................................................................................................7

4.1 SYNTHESIZER A&BOUTPUTS (DDS AOUT, DDS BOUT)..........................................................7

4.2 CONTROL TTL OUTPUT CONNECTOR ...............................................................................................7

4.2.1 AUX/MODA and TRIG/MODB Input Lines ............................................................................9

4.2.2 TTL_Out[7..0] .........................................................................................................................9

4.3 LED INDICATOR...............................................................................................................................9

5. HARDWARE INSTALLATION AND SETUP................................................................................10

6. SOFTWARE INSTALLATION AND SETUP .................................................................................11

6.1 SOFTWARE INSTALLATION FOR WINDOWS 2000 OR WINDOWS XP TM............................................11

6.1.1 Disabling the “Found New Hardware” prompt....................................................................11

6.1.2 Continuing with the software installation in 2000 and XP....................................................12

6.2 SOFTWARE INSTALLATION FOR SOLARIS 9, 8OR 7(SPARC PLATFORM EDITION ONLY)TM .............12

6.3 SOFTWARE INSTALLATION UNDER REDHATTM LINUX ....................................................................13

7. RUNNING SYNTH300 PROGRAMS ...............................................................................................15

7.1 USING THE SYNTH300 SERIES UNDER WINDOWS 2000/XP ............................................................15

7.2 USING THE SYNTH300 SERIES UNDER LINUX OR SOLARISTM..........................................................15

7.2.1 Example: Synthesizing two sinusoids with independent frequencies....................................15

7.2.2 Example: Sythesizing a 4-FSK signal...................................................................................16

7.2.3 Example: Synthesizing a QPSK signal .................................................................................16

7.2.4 Example: Frequency sweeping.............................................................................................16

7.2.5 Example: External modulation control ................................................................................16

8. USING THE SYNTH300 GUI UNDER WINDOWS XP.................................................................18

8.1 EXAMPLE #1 –TWO INDEPENDENT SINUSOIDS ...............................................................................19

8.2 EXAMPLE #2 –PHASE-LOCKED SINUSOIDS .....................................................................................20

8.3 EXAMPLE #3 –TWO FULLY INDEPENDENT SWEPT SINUSOIDS .........................................................21

8.4 EXAMPLE #4 –EXTERNAL MODULATION EXAMPLE .......................................................................22

9. LOW LEVEL SOFTWARE INTERFACE.......................................................................................23

9.1 PCI CONFIGURATION HEADER .......................................................................................................23

9.2 SYNTH300 CONTROL REGISTER ...................................................................................................23

9.2.1 Unreset (write only)...............................................................................................................24

9.2.2 Update Frequency/Phase (write only)...................................................................................24

9.2.3 Synthesizer A Profile Select (write only) ...............................................................................24

9.2.4 Synthesizer B Profile Select (write only) ...............................................................................24

9.2.5 External Modulation Mode (write only)................................................................................25

9.2.6 Enable External Modulation (write only)..............................................................................25

9.2.7 Write is to Synth B, Write is to Synth A (write only)..............................................................25

9.2.8 Synthesizer IC Register Address (write only) ........................................................................26

9.2.9 Sample IC Data Word (write only)........................................................................................26

9.3 AUXILIARY REGISTER.....................................................................................................................28

1. Warranty

Furaxa, Inc. hardware, software and firmware products are warranted against defects in materials

and workmanship for a period of two (2) years from the date of shipment of the product. During

the warranty period, Furaxa, Inc. shall, at its option, either repair or replace hardware, software or

firmware products which prove to be defective. This limited warranty does not cover damage

caused by misuse or abuse by customer, and specifically excludes damage caused by the

application of excessive voltages to the inputs and/or outputs of data acquisition boards. The

limited warranty additionally excludes damage caused by overheating due to installation of the

product in systems that do not have direct forced air flow over the PCI bus slots.

While Furaxa, Inc. hardware, software and firmware products are designed to function in a

reliable manner, Furaxa, Inc. does not warrant that the operation of the hardware, software or

firmware will be uninterrupted or error free. Furaxa products are not intended to be used as

critical components in life support systems, aircraft, military systems or other systems whose

failure to perform can reasonably be expected to cause significant injury to humans. Furaxa

expressly disclaims liability for loss of profits and other consequential damages caused by the

failure of any product, and recommends that customer purchase spare units for applications in

which the failure of any product would cause interruption of work or loss of profits, such as

industrial, shipboard or military equipment.

THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR

IMPLIED. THE WARRANTIES PROVIDED HEREIN ARE BUYER’S SOLE REMEDIES. IN NO

EVENT SHALL FURAXA, INC. BE LIABLE FOR DIRECT, SPECIAL, INDIRECT, INCIDENTAL

OR CONSEQUENTIAL DAMAGES SUFFERED OR INCURRED AS A RESULT OF THE USE

OF, OR INABILITY TO USE THESE PRODUCTS. THIS LIMITATION OF LIABILITY REMAINS

IN FORCE EVEN IF FURAXA, INC IS INFORMED OF THE POSSIBILITY OF SUCH DAMAGES.

Some states do not allow the exclusion or limitation of incidental or consequential damages, so

the above limitation and exclusion may not apply to you. This warranty gives you specific legal

rights, and you may also have other rights which vary from state to state.

2. Model Descriptions

The SYNTH300 series of Direct Digital Synthesizer (DDS) boards are complete low noise

precision synthesizers on a single PCI bus card. Designed for low jitter operation in

communications, industrial and scientific applications these boards function in PCI bus systems

using supplied drivers for Windows 2000TM or XPTM ,Solaris 8 (Sparc Platform EditionTM 10/00 or

later, Linux (Red HatTM 7.2, or Solaris 8TM or 9 (Sparc Platform Edition). In addition to their single

or dual synthesizers, all SYNTH300 boards have two TTL inputs which can be used to

dynamically switch between up to four frequency profiles, for generating modulated waveforms.

2.1 MODEL SYNTH300D

Model Synth300D is a Dual-channel DDS board having two independent Direct Digital

Synthesizers,each separately programmable for any frequency between 300kHz and 300MHz in

increments of approximately 0.223 Hz.

2.2 MODEL SYNTH300S

Model Synth300S is a Single-channel DDS board having a single Direct Digital

Synthesizers,each separately programmable for any frequency between 300kHz and 300MHz in

increments of approximately 0.223 Hz.

3. Specifications

3.1 Synthesizer outputs

Number of DDS Output Channels: 2, independently programmable, or single

channel ( Model SYNTH300S)

Analog output voltage (into 50 ohms): 250mV RMS +/-10% from 2-200MHz

250mV RMS +/-20% from 300kHz-300MHz

Output impedance: 50 ohms || 10pF

Output connectors: Two SMA connectors.

Wideband SFDR (DC to Nyquist):

40MHz Fout 60 dBc

100MHz Fout 54 dBc

180MHz Fout 53 dBc

Narrowband SFDR:

40MHz Fout (+- 1 MHz) 87 dBc

40MHz Fout (+- 50 kHz) 88 dBc

100MHz Fout (+- 1 MHz) 82 dBc

100MHz Fout (+- 50 kHz) 86 dBc

180MHz Fout (+- 1 MHz) 84 dBc

180MHz Fout (+- 50 kHz) 85 dBc

Output Phase Noise (103MHz Iout):

@ 1kHz Offset -147 dBc/Hz

@ 10kHz Offset -150 dBc/Hz

@ 100kHz Offset -152 dBc/Hz

3.2 Frequency stability

Initial frequency accuracy +/-0.01% of specified frequency +/-0.223Hz

3.3 Phase Resolution

The intra-synthesizer (Synth A to Synth A) phase relationship is limited only by the DDS phase

resolution (14 bits). The inter-synthesizer (Synth A to Synth B) phase relationship is not

guaranteed to this accuracy, and varies proportional to the frequency of synthesis.

3.4 TTL Trigger/Modulation inputs

Number of TTL Input lines: 2, Standard TTL (V0l < 0.8V, Vih > 2.4V)

3.5 TTL Outputs

Number of TTL Ouput lines: 8, software programmable

Standard TTL (V0l < 0.8V, Vih > 2.4V)

8mA max output drive

3.6 General

Operating Temperature Range: 0 to +55 Degrees Celsius

Storage Temperature Range: -25 to +85 Degrees Celsius

Power Requirements:

SYNTH300D: +5V +/-5% at 0.3A Maximum

+3.3V +/-5% at 1.5A Maximum

SYNTH300S: +5V +/-5% at 0.3A Maximum

+3.3V+/-5%at1AMaximum

3.7 Physical

SYNTH300 boards are half size 32-bit PCI bus boards, which will operate in either 64-bit or 32-bit

33MHz or 66MHz PCI slots with either 5V or 3.3V signalling environment. The figure below

shows the locations of the SMA signal output and digital I/O connectors, and LED indicator.

To avoid overheating, all SYNTH300 boards must be installed a in well-cooled workstation,

PC or server chassis.

Figure 3.1 SYNTH300D PCI Board (SYNTH 300S Similar)

4. Hardware Architecture

SYNTH300 series boards are comprised of a digital section and an analog section. The digital

section includes a high speed programmable logic devices which implement the bus interface

and the PCI interface.

The analog section contains a 1GHz low-jitter clock, and one or two single-chip Direct Digital

Synthesizer (DDS) ICs. The current outputs of each DDS are fed to a broadband RF

transformer and 300MHz low-pass filter.

4.1 Synthesizer A & B Outputs (DDS A OUT, DDS B OUT)

The two analog synthesizer outputs have SMA connectors and provide analog sine wave signals

with amplitude 0dBm 220mV RMS into 50 ohms). The frequency, frequency sweep (if any) rate,

and other parameters are software programmable. The output amplitude is fixed. If a lower

amplitude is desired, a wide range of 50 ohm coaxial attenuators, such as those from Mini-

Circuits (Brooklyn, NY) may be used.

4.2 Control TTL Output connector

Reserved for future use.

Note: EXTREME CARE MUST BE TAKEN TO ENSURE THAT NO VOLTAGES GREATER

THAN +/-3V ARE EVER CONNECTED TO ANY ANALOG OUTPUT, AND NO VOLTAGE

OUTSIDE THE 0 TO +5V RANGE IS EVER APPLIED TO ANY OTHER LINE.

Pin Signal Name Pin Signal Name

1 TTL OUT 0 2 Digital GND

3 TTL OUT 1 4 Digital GND

5 TTL OUT 2 6 Digital GND

7 TTL OUT 3 8 Digital GND

9 TTL OUT 4 10 Digital GND

11 TTL OUT 5 12 Digital GND

13 TTL OUT 6 14 Digital GND

15 TTL OUT 7 16 Digital GND

17 Not used 18 Digital GND

19 Not used 20 Digital GND

21 Not used 22 Digital GND

23 Not used 24 Digital GND

25 Not used 26 Digital GND

Figure 4.1. Pinout for I/O cable for SYNTH300 models. .

PIN 25 Not used

PIN 23 Not used

PIN 21 Not used

PIN 19 Not used

PIN 17 Not used

PIN 15 TTL OUT 7

PIN 13 TTL OUT 6

PIN 11 TTL OUT 5

PIN 9 TTL OUT 4

PIN 7 TTL OUT 3

PIN 5 TTL OUT 2

PIN 1 TTL OUT 0

PIN 3 TTL OUT 1

PIN 26 Digital Ground

PIN 24 Digital Ground

PIN 22 Digital Ground

PIN 20 Digital Ground

PIN 18 Digital Ground

PIN 16 Digital Ground

PIN 14 Digital Ground

PIN 12 Digital Ground

PIN 10 Digital Ground

PIN 8 Digital Ground

PIN 6 Digital Ground

PIN 4 Digital Ground

PIN 2 Digital Ground

Figure 4.2 Bottom view of mating I/O connector for 26-conductor I/O cable.

4.2.1 AUX/MODA and TRIG/MODB Input Lines

Two (2) TTL-compatible Trigger/Modulation signals permit low-latency switching between four

frequency/phase profiles for each synthesizer. This external modulation functionality enables

frequency/phase profile switching for applications in which the overhead or uncertainty of

software-controlled frequency/phase profile selection is not acceptable. The MOD_A and

MOD_B inputs are synchronized with the on-board 125MHz clock

The synthesizer profile selection is controlled by the 2 external TTL bits as described in section

9.2.5.

UNDER NO CIRCUMSTANCES MAY VOLTAGES BELOW 0V OR ABOVE +5V BE

CONNECTED TO THE TRIGGER/MODULATION INPUT JACKS.

4.2.2 TTL_Out[7..0]

Reserved for future use.

4.3 LED Indicator

The Red/Green LEDs on the top edge of the SYNTH300 board are useful during system

integration for monitoring the board status. The functions of the LEDs are outlined below.

CASE 1: NO EXTERNAL MODULATION: If the LED illuminates with a green color, and external

modulation has not been enabled, this means that the synthesizers have not yet been unreset

(via the software unreset command). If the LED illuminates with a red color, and external

modulation has not been enabled, this means that the synthesizers have been unreset and are

therefore running.

CASE 2: EXTERNAL MODULATION ENABLED: If the LED illuminates with a red color, this

means that the MOD A and MODB inputs are both 0, If the LED does not illuminate, and the

board has been told to run, this means that either the MOD A or MOD B input is 1.

5. Hardware Installation and Setup

Before you begin, be sure your system has at least 256MB installed RAM. To avoid

overheating, the SYNTH300 must be installed in a well-cooled workstation or server

chassis, or alternatively in an industrial chassis PC. Installation in a standard desktop PC

without fans at the front end of the card cage may cause the SYNTH300 to overheat, and

resulting damage is not covered by warranty.

1. Use the shutdown command on your system and then turn OFF the power to the system.

BEFORE REMOVING THE COMPUTER SYSTEM COVER OR REMOVING ANY BOARD, BE

SURE THAT THE POWER TO THE COMPUTER, AS WELL AS TO ALL PERIPHERAL

DEVICES IS OFF. WEAR A STATIC-DISSIPATING WRISTBAND WHICH IS GROUNDED TO

THE SYSTEM CHASSIS WHILE OPENING OR WORKING ON YOUR SYSTEM.

2. Remove any screws that attach the computer system cover and remove the cover.

3. Remove the filler bracket from the PCI bus slot into which you wish to install your

SYNTH300 board. If a mixture of 5V and 3.3V slots are available in the system, choose a 32-bit

5V slot as your first preference. If that is not available, install it in a 32 or 64-bit 3.3V slot. For

details, refer to the hardware manual for your computer system.

4. Hold the SYNTH300 board by the top of the metal PCI bracket. Then hook the tab on the

bottom edge of the SYNTH300's metal bracket into the corresponding slot in the computer's rear

panel. Carefully push the SYNTH300 down so its PCI bus connector mates with the PCI bus

connector on the motherboard. Be sure that the SYNTH300 is seated firmly into the motherboard

PCI bus connector. Check that no other PCI boards have become unseated when the

SYNTH300 was installed, as motherboards may flex slightly when installing PCI boards.

5. Plug coaxial I/O cables for the analog outputs into the appropriate SMA connectors on

the SYNTH300's rear bracket at the rear of the system. Please refer to the diagram on page 8 of

this manual.

6. We recommend that synthesizer output channels Aand B (the 1st and 2nd SMA

connectors from the bracket top) initially be connected to an oscilloscope set for 200mV/div., so

you can observe the two synthesized waveforms operation when running the example software.

7. Replace the computer system cover, installing all screws you had removed. Reconnect

the power cables to the system and peripherals.

8. Power up and reboot the system. The system will then be ready for software installation.

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