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Ramsey Electronics SG560, User Manual

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Ramsey Electronics SG560 User Manual Download Page 1

1 

 

USER GUIDE 
JANUARY, 2005 

Rev. 1.3

 

SG560 SIGNAL GENERATOR 

 

Copyright Ramsey Electronics, Inc. 2005, All rights reserved 

 

 
 
 
 
 

 
 
 
 

Property of Ramsey Electronics, Inc. 

 

Do not reproduce or distribute. 

Summary of Contents for SG560

Page 1: ...1 USER GUIDE JANUARY 2005 Rev 1 3 SG560 SIGNAL GENERATOR Copyright Ramsey Electronics Inc 2005 All rights reserved Property of Ramsey Electronics Inc Do not reproduce or distribute ...

Page 2: ...ing and Recalling Memories 10 Adjusting Display Contrast 10 Detailed information Examples of Waveforms and Offsets 12 Using the SG560 Differential Outputs 13 Performing Manual Frequency Sweeps 13 Setting Meter Output Impedance 14 Filter Testing 14 Signal Descriptions 15 Dealing with Small Signal Levels and Noise 0 Appendix CTS Tone Frequency List 20 Specifications 22 Warranty 23 Property of Ramsey...

Page 3: ...3 INTRODUCTION Property of Ramsey Electronics Inc Do not reproduce or distribute ...

Page 4: ...your AC outlet 2 Plug the power supply into the rear of the SG560 3 Turn on the SG560 The display will show the default Frequency Level and Offset 4 Use the buttons to check their function Press the FREQ button then press 100kHz 5 Use the jog dial to adjust the frequency in increments SG560 AUDIO GENERATOR DATA FREQ LEVEL OFFSET SHAPE 1 2 3 4 SHIFT MHz V kHz mV Hz RCL STO 0 5MHZ TRUE DC a 5 8 0 b ...

Page 5: ...im pedance a 50 ohm load will drop the output signal level by of the value entered With 0 ohms a 50 ohm load will not drop the level at all The 25 ohm output setting can help when driving a capacitive load the 0 ohm setting should never be used with this type of load A DC offset may be entered this is added or subtracted if the jack connections are reversed to the AC signal Rather than the output ...

Page 6: ...and SHAPE to select shape and return to the last field selected D Jog dial Turning this will increment or decrement the currently selected field by the preset step size Set the step size before turning E Outputs These are standard spaced banana jack outputs for test cables or probes banana to BNC adapters or jumper wire sets DATA This is the data entry keypad The red portions of the buttons indica...

Page 7: ...7 BASIC USE Property of Ramsey Electronics Inc Do not reproduce or distribute ...

Page 8: ...step size of 345 2Hz Once entered the dial will step the current selected field by this amount If settings are saved to memory the step sizes are also saved To abort an entry press FREQ LEVEL or OFFSET Setting Generator Level To enter level press the LEVEL key to go to the Level field Any voltage in the range of 0 10V with 10mV of resolution can be entered This is the peak to peak voltage not to b...

Page 9: ...e square wave to 0 to 5V we must add 2 5V to the AC waveform In this case enter an off set of 2 5V To enter this value press OFFSET 2 5 V To further illustrate the uses of DC offset look at the waveforms above Fig A shows a 2V peak to peak sinewave with 0V of offset Fig B shows the same sinewave with 0 3V of offset applied 0 3VDC is added to all portions of the wave both the peaks and the average ...

Page 10: ... location from a f and all characteristics of the saved waveform will be loaded and activated The current selected memory location is shown as a character in the upper right of the display As a special feature memory location a is automatically recalled upon startup of the SG560 This can be set to whatever state is preferred for power up Setting memory location a to 0Hz 0 level and 0 offset simula...

Page 11: ...11 DETAILED INFORMATION Property of Ramsey Electronics Inc Do not reproduce or distribute ...

Page 12: ...ffset and 0 3V offset 5V 5 2V 0 2V 0 2V 0 0V Example of noise test with 0 4V peak to peak and 5V of offset to power a circuit Example of square wave with 5V peak to peak and 2 5V of offset to recreate a TTL level wave form Examples of Waveforms and Offsets Property of Ramsey Electronics Inc Do not reproduce or distribute ...

Page 13: ...and compare the input voltage to output voltage of the circuit under test to check its frequency response The SG560 is capable of sweeping in linear steps using the keypad or dial Typically the circuit setup would be as follows DMM IN OUT SG560 TEST CIRCUIT Determine the frequency range to be tested For example for testing a 20kHz low pass filter 1kHz through 100kHz would be adequate Set the signa...

Page 14: ...istors One jumper will give you an out put impedance of 25 ohms and two will be 0 ohms The default is to have no jumpers and a 50 ohm output impedance By running in 0 ohm configuration you are able to have confidence in that the front panel setting of the SG560 is the same right at the jacks no matter what the load is Normally with a known output impedance from a signal generator that impedance mu...

Page 15: ...Note the difference between TP2 and TP3 Not only is the level 6 dB higher here in the pass band since there is no voltage divider it also has an additional bump that is unexpected from the filter design This is due to the complex im pedance of the filter reacting with the ideal source of the SG560 This is not a desirable re sponse TP4 is what would be seen at the output jacks of a generator with a...

Page 16: ...d nega tive outputs equally to keep noise to a minimum Use the following circuit for a divide by ten attenuator When using this circuit all of you volt age and offset settings will be divided by 10 using an even number makes it easy to adjust and read values This will supply an output range of 0 0V to 1 0V with a max offset of 0 5V and a 10 ohm output impedance For a factor of 100 a larger divider...

Page 17: ...17 DETAILED INFORMATION Your Notes Property of Ramsey Electronics Inc Do not reproduce or distribute ...

Page 18: ...18 DETAILED INFORMATION Your Notes Property of Ramsey Electronics Inc Do not reproduce or distribute ...

Page 19: ...19 APPENDIX Property of Ramsey Electronics Inc Do not reproduce or distribute ...

Page 20: ... 2 186 2 218 1 250 3 74 4 85 4 167 9 192 8 225 7 77 0 88 5 173 8 203 5 233 6 Standard EIA CTS Tones Hz 91 5 94 8 97 4 100 0 136 5 141 3 146 2 151 4 118 8 123 0 127 3 131 8 103 5 107 2 110 9 114 8 Property of Ramsey Electronics Inc Do not reproduce or distribute ...

Page 21: ...21 APPENDIX Property of Ramsey Electronics Inc Do not reproduce or distribute ...

Page 22: ...utput Level 0V 10V peak to peak 0 1V steps Offset Level 0V 5V DC offset 0 1V steps Level Accuracy 0 5dB 0Hz 1MHz 0 5dB 3dB 0Hz 5MHz Offset Accuracy 1 of display setting Spurious SINAD Sine wave 59dB minimum Signal to Noise Distortion Distortion 66dBc below 1 MHz 56dBc above1 MHz sine wave Spurious Free Dynamic Range Wideband 60dBc Narrowband 78dBc General Supplied Accessories 120V to 240V in 12VDC...

Page 23: ...ronics Inc Technical Support RAMSEY ELECTRONICS INC Technical Support 590 Fishers Station Drive Fishers NY 14564 585 924 4560 techsupport ramseymail com When returning a unit for repair please include a specific description of the problem as well as detailed contact information including daytime telephone number E Mail address and complete return shipping address information Limitations This warra...

Page 24: ...C 590 Fishers Station Drive Victor NY 14564 585 924 4560 www ramseytest com Copyright Ramsey Electronics Inc 2005 All rights reserved SG560 January 2005 Rev 1 3 Property of Ramsey Electronics Inc Do not reproduce or distribute ...

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