SpectraDynamics HROG-5 Operating Manual

High resolution offset generator

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SDI

PECTRA

YNAMICS,

NC.

IGH

ESOLUTION

FFSET

ENERATOR

HROG-5

PERATING

ANUAL

PECTRA

YNAMICS,

NC • 1849 Cherry St. Unit 2 • Louisville, CO 80027

Phone: (303) 665-1852 • Fax: (303) 604-6088

www.spectradynamics.com

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Page 1 PECTRA YNAMICS, ESOLUTION FFSET ENERATOR HROG-5 PERATING ANUAL PECTRA YNAMICS, NC • 1849 Cherry St. Unit 2 • Louisville, CO 80027 Phone: (303) 665-1852 • Fax: (303) 604-6088 www.spectradynamics.com...
Page 2: Table Of Contents
Number Screen………………………………………………………………..…. 11 Frequency Screen…………………………………………………………..…… 12 Phase Screen…………………………………………………………………..13 Settings Screen………………………………………………………………….. 14 Communications Screen……………………………………………………..…. 15 1 PPS Screen…………………………………………………………………….. 16 Instrument Screen……………………………………………………………….. 17 PLL Screen……………………………………………………………………….. 18 ASCII Command Set…………………………………………………………….. 19 Troubleshooting………………………………………………………………….. 39 Warranty………………………………………….……………………………….. 41 US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 4: Description
Description The HROG-5 is a high-resolution phase and frequency offset generator. The phase and frequency of the output signals are adjustable with respect to a 5 MHz user supplied reference. The output phase resolution of the generator is 2* /2 radians or an output time step resolution of 0.3 fs.
Page 5: Safety And Preparation For Use
This instrument can be setup to operate on 110-120 or 220-240 VAC and a line frequency of 50 to 60 Hz. The setup voltage for this HROG-5 is specified on page 6. For conversion to a different line voltage please contact SDI.
Page 6: The Front Panel
5 MHz +/- 0.1 Hz with a level of +10 to +15 dBm. Signal LED The 5 MHz signal LED will turn on when a 5 MHz reference is present. PLL LED The PLL lock LED will turn on when the HROG-5 is phase locked to an external reference. 1 PPS In SMA input for an external one pulse per second signal (1 PPS) for synchronization.
Page 7 1 PPS Out 2 SMA output number two providing the frequency and phase offset 1 PPS signal. This output signal has a level greater than 2.2 V into a 50 ohm load. US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 9: Rs-232 Port
A standard serial cable with a DB-9 connector can be used to interface to the HROG-5. The user can input commands using a simple dumb terminal program on a remote computer or more sophisticated control can be used with software such as Labview.
Page 10: Mechanical Tuning
12 1 dBm. The reference signal power level should be between 10 dBm and 15 dBm. If the HROG-5 is phase locked to the external reference the LOCK voltage will be greater than 0.2 V. Adjust the mechanical tuning screw to achieve a lock condition.
Page 11: Specifications
+10 dBm to +15 dBm External 1 PPS 800 ns min. pulse width TTL Compatible Levels AC Power 100–120 / 220–240 VAC see page 6. Rack-mount Enclosure Size: 3.5” X 19” X 17” Weight: 28 lbs US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 12: Main Screen
Main Screen Main Screen The main screen displays the current frequency and phase offset of the HROG-5. The soft keys at the bottom of the screen display the five main functions that are available. DISPLAYS Frequency Offset The frequency offset may be displayed in units of Hertz (Hz) or as a fractional number that is normalized to the reference frequency of 5.0 MHz.
Page 13: Number Screen
Enter number in nanoseconds. Enter number in picoseconds. Backspace. ENTER Enter new number and exit number menu. Exit number menu discarding changes. Numbers zero through nine. Decimal point. Negative sign Positive sign. Exponential US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 14: Frequency Screen
Frequency Screen Frequency Screen The frequency screen displays the current frequency offset of the HROG-5. The soft keys at the bottom of the screen are used to set a new frequency offset. DISPLAYS Frequency Offset The frequency offset may be displayed in units of Hertz (Hz) or as a fractional number that is normalized to the reference frequency of 5.0 MHz.
Page 15: Phase Screen
Phase Screen Phase Screen The phase screen displays the current phase offset of the HROG-5. The softkeys at the bottom of the screen are used to set a new phase offset. DISPLAYS Phase Offset The phase offset may be displayed in units of degrees (deg) or as a time offset in units of nanoseconds (ns).
Page 16: Settings Screen
1 Pulse per second output options and control. The PPS key will bring up the 1 PPS Screen. INST Instrument setup and information. The INST key will bring up the Instrument Screen. EXIT Exit to previous menu. US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 17: Communications Screen
“Testing Serial Port” “Hit Enter to Continue” LOCAL Return to local control and terminate remote RS-232 control session. (This button appears only in remote RS-232 control mode). EXIT Exit to previous menu. US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 18: Pps Screen
Toggle through the available pulse width settings of the 1 PPS signal. Pulse width options: 0.8 us, 3.2 us, 12.8 us, 51.2 us, 102.4 us, 204.8 us, 409.6 us, 819 EXIT Exit to previous menu. US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 19: Instrument Screen
Change the contrast of the LCD display. Increase the value. DOWN Decrease the value. EXIT Exit to previous menu. View phase-lock-loop control voltages and levels. The PLL key brings up the PLL window. EXIT Exit to previous menu. US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 20: Pll Screen
+10 dBm and +15 dBm for proper operation. LOCK The lock indicator voltage. A voltage greater than or equal to 0.2 V indicates that the HROG-5 is phase locked to the external reference. The tuning port voltage on the HROG-5 internal oscillator. For proper operation the tuning port voltage is 5.0 V.
Page 21: Ascii Command Set
ASCII Command Set The HROG-5 command set is used to control all synthesizer functions. The characters sent to the HROG-5 must be upper case ASCII characters. Command Summary Description Page BAUD [baud] Change baudrate BAUD? Query baud setting DATE [mo/day/yr]...
Page 22 The results of the query are in the following format. BAUD? [baud]<cr> Example: BAUD?<cr> Queries the baudrate setting of the synthesizer. <cr> is a carriage return. The function will return: BAUD? 9600<cr> US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 23 The results of the query are in the following format. DATE? [mo/day/year]<cr> Example: DATE?<cr> Queries the date setting of the instrument. <cr> is a carriage return. The function will return: DATE? 02/02/2001<cr> US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 24 (0 to 2.0E-7) resolution is 1.0E-18. Example: FFOF 2.0E-10<cr> The output of the HROG-5 will be offset from the reference by 2.0 E-10 or 1 MHz for a 5 MHz reference. <cr> is a carriage return. FFOF? queries the instrument fractional frequency offset.
Page 25 (0 to 1.0 Hz) resolution is 5.0E-12 Hz. Example: FREQ 0.001<cr> The output of the HROG-5 will be offset from the reference by 1 MHz. <cr> is a carriage return. FREQ? queries the instrument frequency offset. FREQ?<cr> FREQ? is executed following a carriage return.
Page 26 HELP HELP is used to display basic help on the ASCII command set. HELP<cr> HELP is executed following the carriage return <cr> Example: HELP<cr> US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 27 LOCL LOCL turns off the RS-232 communications and returns control to the LCD touch screen. LOCL<cr> LOCL is executed following the carriage return <cr> US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 28 Example: PHAS 360<cr> Sets the output phase of the HROG-5 to +360 degrees from the phase = 0 condition. Note that if phase = 360 deg and we issue a PHAS 360<cr> command the output phase will not change because the synthesizer output is already at 360 deg.
Page 29 The results of the query are in the following format. PPSW? [pwidth] [width in uS]<cr> Example: PPSW?<cr> Queries the 1 PPS pulse width value. <cr> is a carriage return. The function will return: PPSW? 4 102.4 uS<cr> US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 30 Example: PLL?<cr> Queries the critical levels and voltages in the HROG-5 control loop. <cr> is a carriage return. The function returns: PLL? Osc: 12.0dBm Ref: 15.0dBm Lock: 0.3V PLL: -0.2V...
Page 31 SFFOF has one parameter and is executed following the carriage return <cr> ffstep range (0 to 2.0E-7) resolution is 1.0E-18. Example: SFFOF 1.0E-14<cr> The output of the HROG-5 will change in frequency by 1.0E-14. <cr> is a carriage return. SFFOF? queries the last fractional frequency step. SFFOF? <cr>...
Page 32 (0 Hz to 1.0 Hz) resolution is 5.0E-12 Hz. Example: SFREQ 0.001<cr> The output of the HROG-5 will change in frequency by 0.001 Hz. <cr> is a carriage return. SFREQ? queries the last frequency step. SFREQ? <cr> SFREQ? executed following a carriage return.
Page 33 SPHAS, SPHAS? SPHAS changes the phase of the HROG-5 output by the amount specified by pstep. SPHAS [pstep]<cr> SPHAS has one parameter and is executed following the carriage return <cr> pstep valid range is (0 to 3600 deg) resolution is 8.4E-8 deg.
Page 34 STOFFS, STOFFS? STOFFS changes the time offset of the HROG-5 output by the amount specified by tstep. STOFFS [tstep]<cr> STOFFS has one parameter and is executed following the carriage return <cr> tstep valid range is (0 to 2000ns) resolution is 4.7E-5 ns.
Page 35 SYNC? queries the synchronization result. Function will return: SYNC? 0 TIMEOUT<cr> Synchronization did not occur. Check external 1 PPS. SYNC? 1 OK<cr> Synchronization successful. Example: SYNC?<cr> SYNC? 1 OK<cr> Synchronization was successful. US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 36 TEMP? TEMP? Queries the system temperature. TEMP?<cr> TEMP? is executed following a carriage return, Example: TEMP?<cr> Returns TEMP? 40.1C<cr> US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 37 Sets the time of day to 12 hours, 1 minute and 0 seconds. <cr> is a carriage return. TIME? Queries the system time of day. TIME?<cr> TIME? is executed following a carriage return, Example: TIME?<cr> Returns TIME? 12:01:31<cr> US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 38 Example: TOFFS 100.0<cr> Sets the output time offset of the HROG-5 to +100 ns from the time offset = 0 condition. Note that if toffset = 100 ns and we issue a TOFFS 100.0<cr> command the output time offset will not change because the synthesizer output is already at 100ns offset.
Page 39 *RPHS sets the phase counter and time offset counter to zero. This function does not change the HROG-5 output signal. *RPHS<cr> *RPHS is executed following the carriage return <cr> Example: *RPHS<cr> Sets the phase and time offset counters = 0. <cr> is a carriage return. US Patent 6,278,330 Copyright © SpectraDynamics, Inc. 2010...
Page 41: Troubleshooting
Troubleshooting The HROG-5 needs up to 30 minutes to warmup after power is applied to the unit. After this warmup period, the power on LED and the 5 MHz output signal LED should be on. The 1 PPS LED should be blinking at a 1 Hz rate. The external 5 MHz reference with a level of +10 dBm to +15 dBm should be connected to the instruments 5 MHz In SMA input.
Page 42 Use the TEST function to test the serial connection. The DATA LED should flash when data is being received by the HROG-5. Make sure that the HROG-5 is in remote control mode and not in local control mode. If any error condition persists please contact technical support.
Page 43: Warranty
SDI’s option, any product not meeting the said specifications. This warranty shall be in effect for one (1) year from the date an HROG-5 is sold by SDI. SDI makes no other warranty, express or implied, and makes no warranty of the fitness for any particular purpose.
Page 44 HROG-5/R02...